Malware Analysis Report

2025-04-13 21:01

Sample ID 250310-ns1rvatsfy
Target a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe
SHA256 a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25
Tags
discovery darkcloud 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

a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25

Threat Level: Known bad

The file a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe was found to be: Known bad.

Malicious Activity Summary

discovery darkcloud stealer

Darkcloud family

Suspicious use of NtCreateUserProcessOtherParentProcess

DarkCloud

Drops startup file

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-10 11:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-10 11:40

Reported

2025-03-10 11:42

Platform

win7-20240903-en

Max time kernel

145s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe"

Signatures

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\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe

"C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 arandelasespeciales.com udp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp
CA 15.235.119.29:443 arandelasespeciales.com tcp

Files

memory/3012-0-0x000000007415E000-0x000000007415F000-memory.dmp

memory/3012-1-0x0000000000A70000-0x0000000000A7A000-memory.dmp

memory/3012-2-0x0000000074150000-0x000000007483E000-memory.dmp

memory/3012-3-0x000000007415E000-0x000000007415F000-memory.dmp

memory/3012-4-0x0000000074150000-0x000000007483E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-03-10 11:40

Reported

2025-03-10 11:42

Platform

win10v2004-20250217-en

Max time kernel

79s

Max time network

139s

Command Line

C:\Windows\Explorer.EXE

Signatures

DarkCloud

stealer darkcloud

Darkcloud family

darkcloud

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 1284 created 3584 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Explorer.EXE

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RegisteredHandlers.vbs C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A

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\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 1284 wrote to memory of 3188 N/A C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe

"C:\Users\Admin\AppData\Local\Temp\a2b63cfc83341df550a845c72da06bd762c4ddd556c4d5d65da204025decbc25.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 arandelasespeciales.com udp
CA 15.235.119.29:443 arandelasespeciales.com 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/1284-0-0x000000007454E000-0x000000007454F000-memory.dmp

memory/1284-1-0x0000000000440000-0x000000000044A000-memory.dmp

memory/1284-2-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-3-0x00000000060B0000-0x00000000061E8000-memory.dmp

memory/1284-4-0x00000000067C0000-0x0000000006D64000-memory.dmp

memory/1284-5-0x0000000006310000-0x00000000063A2000-memory.dmp

memory/1284-9-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-19-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-17-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-51-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-70-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-63-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-61-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-59-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-57-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-55-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-53-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-67-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-65-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-49-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-45-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-43-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-41-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-37-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-35-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-33-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-31-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-29-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-28-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-25-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-23-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-21-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-15-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-13-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-11-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-47-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-39-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-7-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-6-0x00000000060B0000-0x00000000061E2000-memory.dmp

memory/1284-1328-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-1329-0x00000000064B0000-0x0000000006542000-memory.dmp

memory/1284-1330-0x00000000065B0000-0x0000000006640000-memory.dmp

memory/1284-1331-0x0000000006550000-0x000000000659C000-memory.dmp

memory/1284-1332-0x00000000066C0000-0x0000000006714000-memory.dmp

memory/1284-1339-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-1336-0x000000007454E000-0x000000007454F000-memory.dmp

memory/1284-1340-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-1342-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/3188-1348-0x0000000000400000-0x0000000000470000-memory.dmp

memory/1284-1347-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-1343-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1284-1350-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/3188-1360-0x0000000000400000-0x0000000000470000-memory.dmp