SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sierras (Back to overview)

Sierra(Alfa,Bravo, ...)

aka: Destover

Actor(s): Lazarus Group


There is no description at this point.

References
2020-02-19LexfoLexfo
@techreport{lexfo:20200219:lazarus:f293c37, author = {Lexfo}, title = {{The Lazarus Constellation A study on North Korean malware}}, date = {2020-02-19}, institution = {Lexfo}, url = {https://blog.lexfo.fr/ressources/Lexfo-WhitePaper-The_Lazarus_Constellation.pdf}, language = {English}, urldate = {2020-03-11} } The Lazarus Constellation A study on North Korean malware
FastCash AppleJeus BADCALL Bankshot Brambul Dtrack Duuzer DYEPACK ELECTRICFISH HARDRAIN Hermes HOPLIGHT Joanap KEYMARBLE Kimsuky MimiKatz MyDoom NACHOCHEESE NavRAT PowerRatankba RokRAT Sierra(Alfa,Bravo, ...) Volgmer WannaCryptor
2020SecureworksSecureWorks
@online{secureworks:2020:nickel:b8eb4a4, author = {SecureWorks}, title = {{NICKEL ACADEMY}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/nickel-academy}, language = {English}, urldate = {2020-05-23} } NICKEL ACADEMY
Brambul Duuzer HOPLIGHT Joanap Sierra(Alfa,Bravo, ...) Volgmer
2017-05-22SymantecSymantec Security Response
@online{response:20170522:wannacry:f66a95e, author = {Symantec Security Response}, title = {{WannaCry: Ransomware attacks show strong links to Lazarus group}}, date = {2017-05-22}, organization = {Symantec}, url = {https://www.symantec.com/connect/blogs/wannacry-ransomware-attacks-show-strong-links-lazarus-group}, language = {English}, urldate = {2020-01-06} } WannaCry: Ransomware attacks show strong links to Lazarus group
AlphaNC BravoNC Duuzer Sierra(Alfa,Bravo, ...) WannaCryptor
2017-02-12SymantecA L Johnson
@online{johnson:20170212:attackers:c338fa3, author = {A L Johnson}, title = {{Attackers target dozens of global banks with new malware}}, date = {2017-02-12}, organization = {Symantec}, url = {https://www.symantec.com/connect/blogs/attackers-target-dozens-global-banks-new-malware}, language = {English}, urldate = {2020-04-21} } Attackers target dozens of global banks with new malware
Joanap Ratankba Sierra(Alfa,Bravo, ...) Lazarus Group
2016-05-26SymantecSecurity Response
@online{response:20160526:swift:fe259bf, author = {Security Response}, title = {{SWIFT attackers’ malware linked to more financial attacks}}, date = {2016-05-26}, organization = {Symantec}, url = {https://web.archive.org/web/20160527050022/https://www.symantec.com/connect/blogs/swift-attackers-malware-linked-more-financial-attacks}, language = {English}, urldate = {2020-04-21} } SWIFT attackers’ malware linked to more financial attacks
Contopee Sierra(Alfa,Bravo, ...) Lazarus Group
2016-02Blue Coat Systems IncSnorre Fagerland
@online{fagerland:201602:from:78bc745, author = {Snorre Fagerland}, title = {{From Seoul to Sony The History of the Darkseoul Group and the Sony Intrusion Malware Destover}}, date = {2016-02}, organization = {Blue Coat Systems Inc}, url = {https://app.box.com/s/xyyord0b806e6or2nh92coxw2areyyx4}, language = {English}, urldate = {2020-08-18} } From Seoul to Sony The History of the Darkseoul Group and the Sony Intrusion Malware Destover
Joanap Sierra(Alfa,Bravo, ...)
2014-12-19US-CERTUS-CERT
@online{uscert:20141219:alert:b74115d, author = {US-CERT}, title = {{Alert (TA14-353A): Targeted Destructive Malware}}, date = {2014-12-19}, organization = {US-CERT}, url = {https://www.us-cert.gov/ncas/alerts/TA14-353A}, language = {English}, urldate = {2020-03-19} } Alert (TA14-353A): Targeted Destructive Malware
Sierra(Alfa,Bravo, ...)
Yara Rules
[TLP:WHITE] win_sierras_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_sierras_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.sierras"
        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 = { c705????????07000000 8935???????? 8935???????? 8935???????? 8935???????? ff15???????? 3bc6 }
            // n = 7, score = 400
            //   c705????????07000000     |     
            //   8935????????         |                     
            //   8935????????         |                     
            //   8935????????         |                     
            //   8935????????         |                     
            //   ff15????????         |                     
            //   3bc6                 | cmp                 eax, esi

        $sequence_1 = { c7060e000000 8b4640 85c0 8945f4 0f844ffeffff }
            // n = 5, score = 200
            //   c7060e000000         | mov                 dword ptr [esi], 0xe
            //   8b4640               | mov                 eax, dword ptr [esi + 0x40]
            //   85c0                 | test                eax, eax
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   0f844ffeffff         | je                  0xfffffe55

        $sequence_2 = { 8bcd 8d442414 83e103 50 f3a4 8d4c241c 51 }
            // n = 7, score = 200
            //   8bcd                 | mov                 ecx, ebp
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   83e103               | and                 ecx, 3
            //   50                   | push                eax
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8d4c241c             | lea                 ecx, [esp + 0x1c]
            //   51                   | push                ecx

        $sequence_3 = { 56 ff7514 8d4de0 e8???????? 0175f0 017514 03fb }
            // n = 7, score = 200
            //   56                   | push                esi
            //   ff7514               | push                dword ptr [ebp + 0x14]
            //   8d4de0               | lea                 ecx, [ebp - 0x20]
            //   e8????????           |                     
            //   0175f0               | add                 dword ptr [ebp - 0x10], esi
            //   017514               | add                 dword ptr [ebp + 0x14], esi
            //   03fb                 | add                 edi, ebx

        $sequence_4 = { 8d45e0 50 e8???????? 6a00 56 ff7514 }
            // n = 6, score = 200
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a00                 | push                0
            //   56                   | push                esi
            //   ff7514               | push                dword ptr [ebp + 0x14]

        $sequence_5 = { 8bfa f3a5 8b0d???????? 83c260 48 }
            // n = 5, score = 200
            //   8bfa                 | mov                 edi, edx
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8b0d????????         |                     
            //   83c260               | add                 edx, 0x60
            //   48                   | dec                 eax

        $sequence_6 = { 8b8698010000 5e c3 56 8bf1 }
            // n = 5, score = 200
            //   8b8698010000         | mov                 eax, dword ptr [esi + 0x198]
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx

        $sequence_7 = { 8b450c 7511 8b4dec 03c7 }
            // n = 4, score = 200
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   7511                 | jne                 0x13
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   03c7                 | add                 eax, edi

        $sequence_8 = { 6a78 56 8bcb e8???????? 85c0 }
            // n = 5, score = 200
            //   6a78                 | push                0x78
            //   56                   | push                esi
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_9 = { 0175f0 017514 03fb 3b7d10 72b0 8b5df0 834dfcff }
            // n = 7, score = 200
            //   0175f0               | add                 dword ptr [ebp - 0x10], esi
            //   017514               | add                 dword ptr [ebp + 0x14], esi
            //   03fb                 | add                 edi, ebx
            //   3b7d10               | cmp                 edi, dword ptr [ebp + 0x10]
            //   72b0                 | jb                  0xffffffb2
            //   8b5df0               | mov                 ebx, dword ptr [ebp - 0x10]
            //   834dfcff             | or                  dword ptr [ebp - 4], 0xffffffff

        $sequence_10 = { 33db 895df0 e9???????? 8b4508 c74018acde4000 e9???????? 83ff10 }
            // n = 7, score = 200
            //   33db                 | xor                 ebx, ebx
            //   895df0               | mov                 dword ptr [ebp - 0x10], ebx
            //   e9????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   c74018acde4000       | mov                 dword ptr [eax + 0x18], 0x40deac
            //   e9????????           |                     
            //   83ff10               | cmp                 edi, 0x10

        $sequence_11 = { e8???????? 8bc6 5e 81c410010000 }
            // n = 4, score = 200
            //   e8????????           |                     
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   81c410010000         | add                 esp, 0x110

        $sequence_12 = { 8d542410 6a00 52 8d44242c 6a04 50 }
            // n = 6, score = 200
            //   8d542410             | lea                 edx, [esp + 0x10]
            //   6a00                 | push                0
            //   52                   | push                edx
            //   8d44242c             | lea                 eax, [esp + 0x2c]
            //   6a04                 | push                4
            //   50                   | push                eax

        $sequence_13 = { 0f8cc0000000 837d0801 7e58 837d0803 0f8fb0000000 397d10 }
            // n = 6, score = 200
            //   0f8cc0000000         | jl                  0xc6
            //   837d0801             | cmp                 dword ptr [ebp + 8], 1
            //   7e58                 | jle                 0x5a
            //   837d0803             | cmp                 dword ptr [ebp + 8], 3
            //   0f8fb0000000         | jg                  0xb6
            //   397d10               | cmp                 dword ptr [ebp + 0x10], edi

        $sequence_14 = { f3a4 8d8c2424050000 8d942430080000 51 52 53 e8???????? }
            // n = 7, score = 200
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8d8c2424050000       | lea                 ecx, [esp + 0x524]
            //   8d942430080000       | lea                 edx, [esp + 0x830]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   53                   | push                ebx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 131072
}
[TLP:WHITE] win_sierras_w0   (20170517 | No description)
import "pe"

rule win_sierras_w0 {
	meta:
		copyright = "2015 Novetta Solutions"
		author = "Novetta Threat Research & Interdiction Group - trig@novetta.com"
		info = "charlie component"
        hash = "f4750e1d82b08318bdc1eb6d3399dee52750250f7959a5e4f83245449f399698"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/SierraCharlie.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sierras"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
	strings:
	/*
		8B 0D 50 A7 56 00  mov     ecx, DnsFree
		81 F6 8C 3F 7C 5E  xor     esi, 5E7C3F8Ch
		6A 01              push    1               ; _DWORD
		50                 push    eax             ; _DWORD
		85 C9              test    ecx, ecx
		74 3A              jz      short loc_40580B
		FF D1              call    ecx ; DnsFree
	*/

	$dnsResolve = {
			8B 0D 50 A7 56 00 
			81 F6 8C 3F 7C 5E 
			6A 01 
			50 
			85 C9 
			74 3A 
			FF D1 
		}
		
	$file1 = "wmplog21t.sqm"
	$file2 = "wmplog15r.sqm"
	$file3 = "wmplog09c.sqm"
		

	condition:
		$dnsResolve in ((pe.sections[pe.section_index(".text")].raw_data_offset)..(pe.sections[pe.section_index(".text")].raw_data_offset + pe.sections[pe.section_index(".text")].raw_data_size))
		or 2 of ($file*)
}
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