Malware Analysis Report

2025-04-13 21:01

Sample ID 250310-nv8v8stks9
Target c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe
SHA256 c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d
Tags
darkcloud discovery stealer
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

c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d

Threat Level: Known bad

The file c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe was found to be: Known bad.

Malicious Activity Summary

darkcloud discovery stealer

DarkCloud

Darkcloud family

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-10 11:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-10 11:44

Reported

2025-03-10 11:46

Platform

win7-20240729-en

Max time kernel

141s

Max time network

21s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe"

Signatures

DarkCloud

stealer darkcloud

Darkcloud family

darkcloud

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2328 set thread context of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2328 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 2328 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe

"C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"

Network

N/A

Files

memory/2328-0-0x000000007416E000-0x000000007416F000-memory.dmp

memory/2328-1-0x0000000000CD0000-0x0000000000D28000-memory.dmp

memory/2328-2-0x00000000002C0000-0x00000000002D0000-memory.dmp

memory/2328-3-0x0000000074160000-0x000000007484E000-memory.dmp

memory/2392-4-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2392-10-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2392-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2392-12-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2392-5-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2392-6-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2328-15-0x0000000074160000-0x000000007484E000-memory.dmp

memory/2392-16-0x0000000000400000-0x0000000000460000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-03-10 11:44

Reported

2025-03-10 11:46

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe"

Signatures

DarkCloud

stealer darkcloud

Darkcloud family

darkcloud

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1244 set thread context of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
PID 1244 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe

"C:\Users\Admin\AppData\Local\Temp\c979cdb1c5a3987d61e1e90e14e969a3d9dad1aa554c5e2d66b3ac36b2e0953d.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/1244-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

memory/1244-1-0x0000000000540000-0x0000000000598000-memory.dmp

memory/1244-2-0x0000000000F80000-0x0000000000F90000-memory.dmp

memory/1244-3-0x0000000074A40000-0x00000000751F0000-memory.dmp

memory/2820-4-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2820-7-0x0000000000400000-0x0000000000460000-memory.dmp

memory/1244-8-0x0000000074A40000-0x00000000751F0000-memory.dmp

memory/2820-11-0x0000000000400000-0x0000000000460000-memory.dmp