darkcloud | 96cf4b957b38b279cd6d860b2baf6675f8a8c404759ca852ebdfcd3d6dd96037

Analysis

max time kernel
143s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
12/12/2022, 17:42

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General

Target
PI No.7861622.exe
Size 184KB
Sample221212-v91azacb33
SHA256 96cf4b957b38b279cd6d860b2baf6675f8a8c404759ca852ebdfcd3d6dd96037
MD5 2be15deca568f9e4740ef4c8f621e589
SHA1 3a474c3cb387d3c763c8f4849d7e831e0de5e77a
SHA512 dc744faa2f1f538608e28eb946ad23100d637a86b738e7b6d8c13832059e107afa3e1fb446d145ca44d55aa3ca11cbd30a1d4d573bf23fda37bce59d4848f926
SSDEEP 3072:JNL/FDRKnw84HvCmJGGj+EJYOwSBauBuRbviiprHXOx5qcYy:/enyHTYaNBdsp7XOxccYy
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcloud persistence stealer

Malware Config

Extracted

Family

darkcloud

https://api.telegram.org/bot5445263893:AAHw8n9x-VpC0HqQCOat1hBNnwAoP3CDP8U/sendMessage?chat_id=5825602774

Signatures

DarkCloud
An information stealer written in Visual Basic.
stealer darkcloud

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	PI No.7861622.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Yloweu = "\"C:\\Users\\Admin\\AppData\\Roaming\\Yttmy\\Yloweu.exe\""	PI No.7861622.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 3664	1976	PI No.7861622.exe	100

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2264	powershell.exe
2264	powershell.exe
1976	PI No.7861622.exe
1976	PI No.7861622.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	PI No.7861622.exe
Token: SeDebugPrivilege	2264	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3664	PI No.7861622.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2264	1976	PI No.7861622.exe	92
PID 1976 wrote to memory of 2264	1976	PI No.7861622.exe	92
PID 1976 wrote to memory of 2264	1976	PI No.7861622.exe	92
PID 1976 wrote to memory of 704	1976	PI No.7861622.exe	99
PID 1976 wrote to memory of 704	1976	PI No.7861622.exe	99
PID 1976 wrote to memory of 704	1976	PI No.7861622.exe	99
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100
PID 1976 wrote to memory of 3664	1976	PI No.7861622.exe	100

C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe
"C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2264
- C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe
  "C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe"
  2⤵
  PID:704
- C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe
  "C:\Users\Admin\AppData\Local\Temp\PI No.7861622.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:3664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1976-132-0x00000000005F0000-0x0000000000624000-memory.dmp

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memory/1976-133-0x0000000005560000-0x0000000005B04000-memory.dmp

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memory/1976-134-0x0000000005050000-0x00000000050E2000-memory.dmp

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memory/1976-135-0x0000000004FC0000-0x0000000004FCA000-memory.dmp

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memory/1976-136-0x0000000007FF0000-0x0000000008012000-memory.dmp

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memory/2264-140-0x00000000056F0000-0x0000000005756000-memory.dmp

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memory/2264-139-0x0000000005850000-0x0000000005E78000-memory.dmp

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memory/2264-138-0x0000000002CC0000-0x0000000002CF6000-memory.dmp

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memory/2264-141-0x0000000005EC0000-0x0000000005F26000-memory.dmp

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memory/2264-142-0x00000000065F0000-0x000000000660E000-memory.dmp

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memory/2264-143-0x0000000007E40000-0x00000000084BA000-memory.dmp

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memory/2264-144-0x0000000006B00000-0x0000000006B1A000-memory.dmp

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memory/3664-147-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/3664-149-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/3664-152-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/3664-153-0x0000000000400000-0x0000000000472000-memory.dmp

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