Malware Analysis Report

2025-01-18 19:55

Sample ID 220124-bgen1shbhk
Target c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02
SHA256 c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02
Tags
$2a$10$fabgdwo4m29p.oqd0s3.r.8ghp3ah8klhiss8m1cfqdi6yior4nwm 3628 sodinokibi
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02

Threat Level: Known bad

The file c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02 was found to be: Known bad.

Malicious Activity Summary

$2a$10$fabgdwo4m29p.oqd0s3.r.8ghp3ah8klhiss8m1cfqdi6yior4nwm 3628 sodinokibi

Suspicious use of NtCreateProcessExOtherParentProcess

Sodinokibi family

Enumerates connected drives

Program crash

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-24 01:06

Signatures

Sodinokibi family

sodinokibi

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-24 01:06

Reported

2022-01-24 01:22

Platform

win7-en-20211208

Max time kernel

122s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

Signatures

Enumerates connected drives

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

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\StartPage C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\StartPage\StartMenu_Start_Time = f0aceb8fc010d801 C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

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

powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 104.18.11.39:80 tcp

Files

memory/2036-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

memory/2036-57-0x00000000030F0000-0x000000000321D000-memory.dmp

memory/2036-58-0x00000000002B0000-0x00000000002CF000-memory.dmp

memory/2036-59-0x00000000034B0000-0x00000000035B9000-memory.dmp

memory/2036-63-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2036-62-0x0000000000180000-0x0000000000181000-memory.dmp

memory/2036-61-0x0000000000170000-0x0000000000171000-memory.dmp

memory/2036-60-0x0000000000160000-0x000000000016A000-memory.dmp

memory/2036-64-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1748-65-0x000007FEFC261000-0x000007FEFC263000-memory.dmp

memory/1748-66-0x00000000024B0000-0x00000000024B2000-memory.dmp

memory/1748-68-0x00000000024B2000-0x00000000024B4000-memory.dmp

memory/1748-69-0x00000000024B4000-0x00000000024B7000-memory.dmp

memory/1748-67-0x000007FEF34E0000-0x000007FEF403D000-memory.dmp

memory/1748-70-0x00000000024BB000-0x00000000024DA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-01-24 01:06

Reported

2022-01-24 01:22

Platform

win10-en-20211208

Max time kernel

119s

Max time network

159s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess

Description Indicator Process Target
PID 1264 created 3220 N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2416 wrote to memory of 3220 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2416 wrote to memory of 3220 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2416 wrote to memory of 3220 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\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 804

Network

Country Destination Domain Proto
US 52.109.8.21:443 tcp

Files

memory/3220-119-0x0000000006060000-0x0000000006061000-memory.dmp

memory/3220-118-0x0000000006050000-0x000000000605A000-memory.dmp

memory/3220-121-0x0000000006220000-0x0000000006221000-memory.dmp

memory/3220-120-0x0000000006080000-0x00000000060A3000-memory.dmp

memory/3220-122-0x0000000006230000-0x0000000006236000-memory.dmp