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 (20211008 | Detects win.sakula_rat.)
rule win_sakula_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-10-07"
        version = "1"
        description = "Detects win.sakula_rat."
        info = "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 = "20211007"
        malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535"
        malpedia_version = "20211008"
        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                 | push                0
            //   6800010000           | push                0x100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   68????????           |                     

        $sequence_1 = { e8???????? 83c404 5b 85c0 5f a3???????? }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   5b                   | pop                 ebx
            //   85c0                 | test                eax, eax
            //   5f                   | pop                 edi
            //   a3????????           |                     

        $sequence_2 = { ffd3 33d2 b91a000000 f7f1 }
            // n = 4, score = 200
            //   ffd3                 | call                ebx
            //   33d2                 | xor                 edx, edx
            //   b91a000000           | mov                 ecx, 0x1a
            //   f7f1                 | div                 ecx

        $sequence_3 = { 83c40c 6a00 6a00 57 53 6aff 56 }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   57                   | push                edi
            //   53                   | push                ebx
            //   6aff                 | push                -1
            //   56                   | push                esi

        $sequence_4 = { 6a00 6a00 6a00 53 6aff 56 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   53                   | push                ebx
            //   6aff                 | push                -1
            //   56                   | push                esi

        $sequence_5 = { 8b8c2454020000 8ac3 5b 33cc e8???????? 8be5 }
            // n = 6, score = 200
            //   8b8c2454020000       | mov                 ecx, dword ptr [esp + 0x254]
            //   8ac3                 | mov                 al, bl
            //   5b                   | pop                 ebx
            //   33cc                 | xor                 ecx, esp
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp

        $sequence_6 = { 8d842448010000 889c244b010000 48 8d642400 8a4801 40 3acb }
            // n = 7, score = 200
            //   8d842448010000       | lea                 eax, dword ptr [esp + 0x148]
            //   889c244b010000       | mov                 byte ptr [esp + 0x14b], bl
            //   48                   | dec                 eax
            //   8d642400             | lea                 esp, dword ptr [esp]
            //   8a4801               | mov                 cl, byte ptr [eax + 1]
            //   40                   | inc                 eax
            //   3acb                 | cmp                 cl, bl

        $sequence_7 = { 6a00 6800000040 57 ff15???????? a3???????? 83f8ff }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   6800000040           | push                0x40000000
            //   57                   | push                edi
            //   ff15????????         |                     
            //   a3????????           |                     
            //   83f8ff               | cmp                 eax, -1

        $sequence_8 = { 8b4508 83c010 50 50 e8???????? }
            // n = 5, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83c010               | add                 eax, 0x10
            //   50                   | push                eax
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_9 = { c7000c000000 c7400801000000 6a00 ff75fc 8d45f8 50 }
            // n = 6, score = 100
            //   c7000c000000         | mov                 dword ptr [eax], 0xc
            //   c7400801000000       | mov                 dword ptr [eax + 8], 1
            //   6a00                 | push                0
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   8d45f8               | lea                 eax, dword ptr [ebp - 8]
            //   50                   | push                eax

        $sequence_10 = { ff75fc 6a00 e8???????? ff75fc e8???????? 8945f4 ff75f4 }
            // n = 7, score = 100
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6a00                 | push                0
            //   e8????????           |                     
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   ff75f4               | push                dword ptr [ebp - 0xc]

        $sequence_11 = { 83f800 743c 68???????? 68???????? e8???????? 83c408 8945fc }
            // n = 7, score = 100
            //   83f800               | cmp                 eax, 0
            //   743c                 | je                  0x3e
            //   68????????           |                     
            //   68????????           |                     
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8945fc               | mov                 dword ptr [ebp - 4], eax

        $sequence_12 = { e8???????? 83c408 ff750c e8???????? }
            // n = 4, score = 100
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   e8????????           |                     

        $sequence_13 = { 83f800 0f849a000000 ff75fc ff75f8 e8???????? }
            // n = 5, score = 100
            //   83f800               | cmp                 eax, 0
            //   0f849a000000         | je                  0xa0
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     

        $sequence_14 = { 8945f4 8945f0 6804010000 e8???????? 8945fc 83f800 746b }
            // n = 7, score = 100
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   6804010000           | push                0x104
            //   e8????????           |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   83f800               | cmp                 eax, 0
            //   746b                 | je                  0x6d

    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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