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
2022-09-26CrowdStrikeIoan Iacob, Iulian Madalin Ionita
@online{iacob:20220926:anatomy:248e6ff, author = {Ioan Iacob and Iulian Madalin Ionita}, title = {{The Anatomy of Wiper Malware, Part 3: Input/Output Controls}}, date = {2022-09-26}, organization = {CrowdStrike}, url = {https://www.crowdstrike.com/blog/the-anatomy-of-wiper-malware-part-3/}, language = {English}, urldate = {2022-09-29} } The Anatomy of Wiper Malware, Part 3: Input/Output Controls
CaddyWiper DEADWOOD DistTrack DoubleZero DUSTMAN HermeticWiper IsaacWiper Meteor Petya Sierra(Alfa,Bravo, ...) StoneDrill WhisperGate ZeroCleare
2022-08-12CrowdStrikeIoan Iacob, Iulian Madalin Ionita
@online{iacob:20220812:anatomy:b13ce32, author = {Ioan Iacob and Iulian Madalin Ionita}, title = {{The Anatomy of Wiper Malware, Part 1: Common Techniques}}, date = {2022-08-12}, organization = {CrowdStrike}, url = {https://www.crowdstrike.com/blog/the-anatomy-of-wiper-malware-part-1/}, language = {English}, urldate = {2023-01-19} } The Anatomy of Wiper Malware, Part 1: Common Techniques
Apostle CaddyWiper DEADWOOD DistTrack DoubleZero DUSTMAN HermeticWiper IsaacWiper IsraBye KillDisk Meteor Olympic Destroyer Ordinypt Petya Sierra(Alfa,Bravo, ...) StoneDrill WhisperGate ZeroCleare
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 (20230125 | Detects win.sierras.)
rule win_sierras_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.sierras."
        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.sierras"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 837df800 0f84bd0d0000 8b45fc ff4df8 8bcf 0fb600 }
            // n = 6, score = 200
            //   837df800             | cmp                 dword ptr [ebp - 8], 0
            //   0f84bd0d0000         | je                  0xdc3
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   ff4df8               | dec                 dword ptr [ebp - 8]
            //   8bcf                 | mov                 ecx, edi
            //   0fb600               | movzx               eax, byte ptr [eax]

        $sequence_2 = { 0f8479010000 81fe00200000 732f e9???????? 8d8c2418010000 68???????? 51 }
            // n = 7, score = 200
            //   0f8479010000         | je                  0x17f
            //   81fe00200000         | cmp                 esi, 0x2000
            //   732f                 | jae                 0x31
            //   e9????????           |                     
            //   8d8c2418010000       | lea                 ecx, [esp + 0x118]
            //   68????????           |                     
            //   51                   | push                ecx

        $sequence_3 = { 6a40 ffd5 8b4c2414 8be8 8b442424 }
            // n = 5, score = 200
            //   6a40                 | push                0x40
            //   ffd5                 | call                ebp
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   8be8                 | mov                 ebp, eax
            //   8b442424             | mov                 eax, dword ptr [esp + 0x24]

        $sequence_4 = { 03d8 8b45f0 3b4510 72c3 }
            // n = 4, score = 200
            //   03d8                 | add                 ebx, eax
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   3b4510               | cmp                 eax, dword ptr [ebp + 0x10]
            //   72c3                 | jb                  0xffffffc5

        $sequence_5 = { 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_6 = { 81c428050000 c3 8d542410 81c1401f0000 52 51 }
            // n = 6, score = 200
            //   81c428050000         | add                 esp, 0x528
            //   c3                   | ret                 
            //   8d542410             | lea                 edx, [esp + 0x10]
            //   81c1401f0000         | add                 ecx, 0x1f40
            //   52                   | push                edx
            //   51                   | push                ecx

        $sequence_7 = { 0f86a4000000 8b7d14 8b450c 8b4df0 }
            // n = 4, score = 200
            //   0f86a4000000         | jbe                 0xaa
            //   8b7d14               | mov                 edi, dword ptr [ebp + 0x14]
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]

        $sequence_8 = { 397c2444 750d 5f 5e }
            // n = 4, score = 200
            //   397c2444             | cmp                 dword ptr [esp + 0x44], edi
            //   750d                 | jne                 0xf
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_9 = { c3 56 8bf1 e8???????? 8d8614010000 5e }
            // n = 6, score = 200
            //   c3                   | ret                 
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   e8????????           |                     
            //   8d8614010000         | lea                 eax, [esi + 0x114]
            //   5e                   | pop                 esi

        $sequence_10 = { 8bf0 8bcf e8???????? 8b4f04 }
            // n = 4, score = 200
            //   8bf0                 | mov                 esi, eax
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   8b4f04               | mov                 ecx, dword ptr [edi + 4]

        $sequence_11 = { eb05 e8???????? 0175f0 03d8 }
            // n = 4, score = 200
            //   eb05                 | jmp                 7
            //   e8????????           |                     
            //   0175f0               | add                 dword ptr [ebp - 0x10], esi
            //   03d8                 | add                 ebx, eax

        $sequence_12 = { eb0f 8b4dec 03c7 50 }
            // n = 4, score = 200
            //   eb0f                 | jmp                 0x11
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   03c7                 | add                 eax, edi
            //   50                   | push                eax

        $sequence_13 = { a1???????? 50 89442440 e8???????? 8b44242c }
            // n = 5, score = 200
            //   a1????????           |                     
            //   50                   | push                eax
            //   89442440             | mov                 dword ptr [esp + 0x40], eax
            //   e8????????           |                     
            //   8b44242c             | mov                 eax, dword ptr [esp + 0x2c]

        $sequence_14 = { ff15???????? 53 8d842430070000 68???????? }
            // n = 4, score = 200
            //   ff15????????         |                     
            //   53                   | push                ebx
            //   8d842430070000       | lea                 eax, [esp + 0x730]
            //   68????????           |                     

    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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