Malware Analysis Report

2025-01-18 18:22

Sample ID 241221-vaaw2atkb1
Target c5fe12bdf192101aa298a324a7fed6410aaac997ccdc4f97bd2a7fa66faa547e
SHA256 c5fe12bdf192101aa298a324a7fed6410aaac997ccdc4f97bd2a7fa66faa547e
Tags
39 1332 sodinokibi discovery ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c5fe12bdf192101aa298a324a7fed6410aaac997ccdc4f97bd2a7fa66faa547e

Threat Level: Known bad

The file c5fe12bdf192101aa298a324a7fed6410aaac997ccdc4f97bd2a7fa66faa547e was found to be: Known bad.

Malicious Activity Summary

39 1332 sodinokibi discovery ransomware

Sodinokibi/Revil sample

Sodin,Sodinokibi,REvil

Sodinokibi family

Enumerates connected drives

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Uses Volume Shadow Copy service COM API

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-21 16:46

Signatures

Sodinokibi family

sodinokibi

Sodinokibi/Revil sample

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-21 16:46

Reported

2024-12-21 16:49

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2896 wrote to memory of 2908 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

Network

N/A

Files

memory/2908-0-0x0000000000180000-0x000000000018A000-memory.dmp

memory/2908-1-0x0000000000180000-0x000000000018A000-memory.dmp

memory/2908-3-0x00000000033B0000-0x000000000344F000-memory.dmp

memory/2908-7-0x0000000000200000-0x0000000000201000-memory.dmp

memory/2908-11-0x0000000000210000-0x0000000000216000-memory.dmp

memory/2908-13-0x0000000000210000-0x0000000000216000-memory.dmp

memory/2908-10-0x0000000003970000-0x0000000003A79000-memory.dmp

memory/2908-6-0x00000000001F0000-0x00000000001F1000-memory.dmp

memory/2908-5-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2908-9-0x0000000000210000-0x0000000000216000-memory.dmp

memory/2908-8-0x0000000000980000-0x000000000099F000-memory.dmp

memory/2908-2-0x0000000003180000-0x0000000003249000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-21 16:46

Reported

2024-12-21 16:49

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

Signatures

Sodin,Sodinokibi,REvil

ransomware sodinokibi

Sodinokibi family

sodinokibi

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\I: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\O: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\R: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\T: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\U: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\V: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\W: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Z: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\G: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\H: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\N: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\P: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\S: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\X: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Y: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\J: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\M: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Q: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\F: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\A: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\B: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\E: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\K: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\L: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\D: C:\Windows\SysWOW64\rundll32.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification \??\c:\program files\TraceEdit.emf C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\UnblockPush.mp3 C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\UnblockRename.dot C:\Windows\SysWOW64\rundll32.exe N/A
File created \??\c:\program files\o72b6-readme.txt C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\RestoreCompress.mht C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ConnectUse.mp2v C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ExpandDeny.jpg C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ImportPublish.asp C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\UnpublishOut.jfif C:\Windows\SysWOW64\rundll32.exe N/A
File created \??\c:\program files (x86)\o72b6-readme.txt C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\CompressUndo.mp2 C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\LimitRestore.3gp2 C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\PopRemove.ogg C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\UpdatePing.midi C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ExportSet.xltm C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ImportWrite.mpeg2 C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\ConvertToSuspend.pptm C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\MeasureDisconnect.M2TS C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\MergeImport.mht C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\OpenProtect.mid C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\RegisterDeny.ps1xml C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\SplitRename.vstm C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\CompleteRedo.reg C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification \??\c:\program files\CompressNew.mpeg3 C:\Windows\SysWOW64\rundll32.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2ca64feaaf5ab6cf96677fbc2bc0e1995b3bc93472d7af884139aa757240e3f6.dll,#1

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==

C:\Windows\system32\wbem\unsecapp.exe

C:\Windows\system32\wbem\unsecapp.exe -Embedding

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 180.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/436-0-0x00007FFAAB723000-0x00007FFAAB725000-memory.dmp

memory/436-1-0x0000024274100000-0x0000024274122000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_30ioffgx.ohi.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/436-11-0x00007FFAAB720000-0x00007FFAAC1E1000-memory.dmp

memory/436-12-0x00007FFAAB720000-0x00007FFAAC1E1000-memory.dmp

memory/436-15-0x00007FFAAB720000-0x00007FFAAC1E1000-memory.dmp

C:\Users\o72b6-readme.txt

MD5 18f69f968e94076d97c02ede8c43f888
SHA1 1ad0644f4f882fe2ab6184a8e6d1aca4ff9a0aa7
SHA256 af68efc3487a82c30e5c0b646232ca4c5c20951bd2fc33bcd64077bf16cf8593
SHA512 5dba2bf63e15d3c435e87411fb8cfc6bf559a67be230332dc933da49e24b6f82e6c451315a3cdbb683a6eb55f16e88760900a74af0a0113013d2c86222a6c57b