SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sakula_rat (Back to overview)

Sakula RAT

aka: Sakurel

Actor(s): APT 26, Hurricane Panda


Sakula / Sakurel is a trojan horse that opens a back door and downloads potentially malicious files onto the compromised computer.

References
2018-11-16CyberThreatIntelligence BlogAction09
@online{action09:20181116:c0ld:89e6c06, author = {Action09}, title = {{(C)0ld Case : From Aerospace to China’s interests.}}, date = {2018-11-16}, organization = {CyberThreatIntelligence Blog}, url = {https://cyberthreatintelligenceblog.wordpress.com/2018/11/16/c0ld-case-from-aerospace-to-chinas-interests/}, language = {English}, urldate = {2020-01-07} } (C)0ld Case : From Aerospace to China’s interests.
Sakula RAT
2016-07-14Github (nccgroup)NCC Group PLC
@online{plc:20160714:technical:a0afcbd, author = {NCC Group PLC}, title = {{Technical Notes on Sakula}}, date = {2016-07-14}, organization = {Github (nccgroup)}, url = {https://github.com/nccgroup/Cyber-Defence/tree/master/Technical%20Notes/Sakula}, language = {English}, urldate = {2020-01-08} } Technical Notes on Sakula
Sakula RAT
2015-08-06SymantecJon DiMaggio
@techreport{dimaggio:20150806:black:b0fbb35, author = {Jon DiMaggio}, title = {{The Black Vine cyberespionage group}}, date = {2015-08-06}, institution = {Symantec}, url = {https://www-west.symantec.com/content/dam/symantec/docs/security-center/white-papers/black-vine-cyberespionage-group-15-en.pdf}, language = {English}, urldate = {2020-04-21} } The Black Vine cyberespionage group
Sakula RAT Shell Crew
2015-07-30SecureworksDell Secureworks CTU
@online{ctu:20150730:sakula:8025917, author = {Dell Secureworks CTU}, title = {{Sakula Malware Family}}, date = {2015-07-30}, organization = {Secureworks}, url = {https://www.secureworks.com/research/sakula-malware-family}, language = {English}, urldate = {2020-01-06} } Sakula Malware Family
Sakula RAT
2015-02-06CrowdStrikeCrowdStrike
@techreport{crowdstrike:20150206:crowdstrike:fbcc37f, author = {CrowdStrike}, title = {{CrowdStrike Global Threat Intel Report 2014}}, date = {2015-02-06}, institution = {CrowdStrike}, url = {https://web.archive.org/web/20200509171721/https://raw.githubusercontent.com/fdiskyou/threat-INTel/master/2015/GlobalThreatIntelReport.pdf}, language = {English}, urldate = {2020-05-11} } CrowdStrike Global Threat Intel Report 2014
BlackPOS CryptoLocker Derusbi Elise Enfal EvilGrab Gameover P2P HttpBrowser Medusa Mirage Naikon NetTraveler pirpi PlugX Poison Ivy Sakula RAT Sinowal sykipot taidoor
2014-02-23SymantecSymantec
@online{symantec:20140223:trojansakurel:9674bd4, author = {Symantec}, title = {{Trojan.Sakurel}}, date = {2014-02-23}, organization = {Symantec}, url = {https://www.symantec.com/security_response/writeup.jsp?docid=2014-022401-3212-99}, language = {English}, urldate = {2020-01-06} } Trojan.Sakurel
Sakula RAT
Yara Rules
[TLP:WHITE] win_sakula_rat_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_sakula_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 6a00 6800010000 6a00 6a00 68???????? }
            // n = 5, score = 300
            //   6a00                 | dec                 eax
            //   6800010000           | lea                 ebx, [0x2308]
            //   6a00                 | dec                 eax
            //   6a00                 | lea                 edx, [0x20f1]
            //   68????????           |                     

        $sequence_1 = { 2bc2 8bc8 85c9 7e0b }
            // n = 4, score = 200
            //   2bc2                 | mov                 dword ptr [ebp - 0x10], eax
            //   8bc8                 | xor                 eax, eax
            //   85c9                 | inc                 eax
            //   7e0b                 | push                eax

        $sequence_2 = { 7405 48 85c0 7ff5 }
            // n = 4, score = 200
            //   7405                 | jmp                 6
            //   48                   | xor                 eax, eax
            //   85c0                 | leave               
            //   7ff5                 | ret                 0xc

        $sequence_3 = { 3c56 7405 3456 880411 }
            // n = 4, score = 200
            //   3c56                 | mov                 dword ptr [ebp - 8], eax
            //   7405                 | cmp                 eax, 0
            //   3456                 | push                dword ptr [ebp - 8]
            //   880411               | mov                 dword ptr [ebp - 0xc], eax

        $sequence_4 = { 83f8ff 7409 f644240810 7402 }
            // n = 4, score = 200
            //   83f8ff               | push                ebp
            //   7409                 | mov                 ebp, esp
            //   f644240810           | sub                 esp, 0x10
            //   7402                 | push                ebx

        $sequence_5 = { c3 680000b000 e8???????? 83c404 5b 85c0 5f }
            // n = 7, score = 200
            //   c3                   | cmp                 eax, 0
            //   680000b000           | je                  0x48
            //   e8????????           |                     
            //   83c404               | push                dword ptr [ebp - 4]
            //   5b                   | push                dword ptr [ebp - 8]
            //   85c0                 | add                 esp, 8
            //   5f                   | push                0x104

        $sequence_6 = { 83c410 6a00 56 6aff 53 6a00 }
            // n = 6, score = 200
            //   83c410               | cmp                 ebx, 5
            //   6a00                 | jne                 0xc
            //   56                   | cmp                 ecx, 0
            //   6aff                 | jne                 0xc
            //   53                   | xor                 eax, eax
            //   6a00                 | push                eax

        $sequence_7 = { 895010 8d442408 50 8d8c244c010000 }
            // n = 4, score = 200
            //   895010               | push                ecx
            //   8d442408             | push                0
            //   50                   | push                0x100
            //   8d8c244c010000       | push                0

        $sequence_8 = { 488bcb ff15???????? 488d1591100000 488bcb ff15???????? 488d15890f0000 }
            // n = 6, score = 100
            //   488bcb               | dec                 eax
            //   ff15????????         |                     
            //   488d1591100000       | add                 esp, 0x8b0
            //   488bcb               | pop                 ebp
            //   ff15????????         |                     
            //   488d15890f0000       | dec                 eax

        $sequence_9 = { 8945f4 8945f0 ff7508 e8???????? 83c404 }
            // n = 5, score = 100
            //   8945f4               | dec                 eax
            //   8945f0               | mov                 ecx, ebx
            //   ff7508               | dec                 eax
            //   e8????????           |                     
            //   83c404               | lea                 edx, [0x1091]

        $sequence_10 = { eb18 83fb05 750a 83f900 7505 31c0 }
            // n = 6, score = 100
            //   eb18                 | je                  0x14
            //   83fb05               | dec                 eax
            //   750a                 | lea                 ecx, [ebp - 0x19]
            //   83f900               | dec                 eax
            //   7505                 | mov                 dword ptr [esp + 0x60], eax
            //   31c0                 | mov                 word ptr [ebp - 0x20], bx

        $sequence_11 = { 33d2 448bc8 33c9 897c2428 }
            // n = 4, score = 100
            //   33d2                 | mov                 dword ptr [esp + 0x58], eax
            //   448bc8               | dec                 eax
            //   33c9                 | mov                 dword ptr [esp + 0x60], eax
            //   897c2428             | test                eax, eax

        $sequence_12 = { e8???????? ff75f8 e8???????? 8945f4 83f800 7443 ff75fc }
            // n = 7, score = 100
            //   e8????????           |                     
            //   ff75f8               | lea                 edx, [0x1152]
            //   e8????????           |                     
            //   8945f4               | dec                 eax
            //   83f800               | lea                 ecx, [ebp - 0x20]
            //   7443                 | and                 dword ptr [esp + 0x58], 0
            //   ff75fc               | dec                 eax

        $sequence_13 = { 4889442460 66895de0 e8???????? 4c8d05e91f0000 488d1552110000 488d4de0 }
            // n = 6, score = 100
            //   4889442460           | pop                 ebp
            //   66895de0             | ret                 
            //   e8????????           |                     
            //   4c8d05e91f0000       | dec                 eax
            //   488d1552110000       | mov                 eax, esp
            //   488d4de0             | xor                 edx, edx

        $sequence_14 = { ff75f8 e8???????? 83c408 6804010000 e8???????? 8945f0 }
            // n = 6, score = 100
            //   ff75f8               | lea                 edx, [esp + 0x58]
            //   e8????????           |                     
            //   83c408               | dec                 eax
            //   6804010000           | mov                 ecx, eax
            //   e8????????           |                     
            //   8945f0               | dec                 eax

        $sequence_15 = { 488b4dc7 488b01 ff90a8000000 3bc6 740a 488d4de7 }
            // n = 6, score = 100
            //   488b4dc7             | dec                 eax
            //   488b01               | mov                 ecx, dword ptr [esp + 0x58]
            //   ff90a8000000         | dec                 eax
            //   3bc6                 | mov                 ebx, dword ptr [esp + 0x8c0]
            //   740a                 | dec                 eax
            //   488d4de7             | add                 esp, 0x8b0

        $sequence_16 = { ff15???????? 85c0 7427 488b4c2450 8d5340 ff15???????? 488b4c2458 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   85c0                 | mov                 ecx, eax
            //   7427                 | mov                 edx, 8
            //   488b4c2450           | dec                 eax
            //   8d5340               | mov                 ecx, esi
            //   ff15????????         |                     
            //   488b4c2458           | mov                 dword ptr [esp + 0x70], 0x68

        $sequence_17 = { c744247068000000 c745ac01000000 66895db0 48895c2450 4889442458 4889442460 }
            // n = 6, score = 100
            //   c744247068000000     | dec                 eax
            //   c745ac01000000       | lea                 edx, [0xf89]
            //   66895db0             | lea                 ebx, [eax + 4]
            //   48895c2450           | inc                 esp
            //   4889442458           | mov                 eax, ebx
            //   4889442460           | dec                 eax

        $sequence_18 = { 50 e8???????? 8945f8 83f800 }
            // n = 4, score = 100
            //   50                   | dec                 esp
            //   e8????????           |                     
            //   8945f8               | lea                 eax, [0x1fe9]
            //   83f800               | dec                 eax

        $sequence_19 = { 8d53f1 ff15???????? 488b4c2458 ff15???????? 488b9c24c0080000 4881c4b0080000 5d }
            // n = 7, score = 100
            //   8d53f1               | lea                 edx, [ebx - 0xf]
            //   ff15????????         |                     
            //   488b4c2458           | dec                 eax
            //   ff15????????         |                     
            //   488b9c24c0080000     | mov                 ecx, dword ptr [esp + 0x58]
            //   4881c4b0080000       | dec                 eax
            //   5d                   | mov                 ebx, dword ptr [esp + 0x8c0]

        $sequence_20 = { 8d5804 ff15???????? 448bc3 488bc8 ba08000000 ff15???????? 488bce }
            // n = 7, score = 100
            //   8d5804               | mov                 ecx, ebx
            //   ff15????????         |                     
            //   448bc3               | dec                 eax
            //   488bc8               | lea                 edx, [0x1091]
            //   ba08000000           | dec                 eax
            //   ff15????????         |                     
            //   488bce               | mov                 ecx, ebx

        $sequence_21 = { 31c0 40 50 eb03 31c0 }
            // n = 5, score = 100
            //   31c0                 | mov                 esi, dword ptr [eax + 8]
            //   40                   | push                0
            //   50                   | push                0x100
            //   eb03                 | push                0
            //   31c0                 | push                0

        $sequence_22 = { 8a03 3c00 7414 b21a f6f2 2500ff0000 }
            // n = 6, score = 100
            //   8a03                 | dec                 eax
            //   3c00                 | mov                 ecx, dword ptr [ebp - 0x39]
            //   7414                 | dec                 eax
            //   b21a                 | mov                 eax, dword ptr [ecx]
            //   f6f2                 | call                dword ptr [eax + 0xa8]
            //   2500ff0000           | cmp                 eax, esi

    condition:
        7 of them and filesize < 229376
}
[TLP:WHITE] win_sakula_rat_w0   (20170517 | Sakula v1.0)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/
rule win_sakula_rat_w0 {
    meta:
        description = "Sakula v1.0"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of ($m*) and not $v1_1
}
[TLP:WHITE] win_sakula_rat_w1   (20170517 | Sakula v1.1)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_sakula_rat_w1 {
    meta:
        description = "Sakula v1.1"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of them
}
[TLP:WHITE] win_sakula_rat_w2   (20170517 | Sakula v1.2)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/


rule win_sakula_rat_w2 {
    meta:
        description = "Sakula v1.2"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"
        $v1_2 = "CCPUpdate"

    condition:
        $m1 and $m2 and $m3 and $v1_2 and not $v1_1
}
[TLP:WHITE] win_sakula_rat_w3   (20170517 | Sakula v1.3)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/


rule win_sakula_rat_w3 {
    meta:
        description = "Sakula v1.3"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_3 = { 81 3E 78 03 00 00 75 57  8D 54 24 14 52 68 0C 05 41 00 68 01 00 00 80 FF  15 00 F0 40 00 85 C0 74 10 8B 44 24 14 68 2C 31  41 00 50 FF 15 10 F0 40 00 8B 4C 24 14 51 FF 15  24 F0 40 00 E8 0F 09 00 }

    condition:
        all of them
}
[TLP:WHITE] win_sakula_rat_w4   (20170517 | Sakula v1.4)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_sakula_rat_w4 {
    meta:
        description = "Sakula v1.4"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_4 = { 50 E8 CD FC FF FF 83 C4  04 68 E8 03 00 00 FF D7 56 E8 54 12 00 00 E9 AE  FE FF FF E8 13 F5 FF FF }

    condition:
        all of them
}
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