Malware Analysis Report

2025-06-16 06:44

Sample ID 240120-zvl71sgehp
Target 6b78492169ace001ed943e1c098dbc78
SHA256 88695f106560d1c1848111fdcef15e2983f0f0f2c5a8f8957df0cc530783f896
Tags
darkcomet guest16 evasion persistence rat trojan upx
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

88695f106560d1c1848111fdcef15e2983f0f0f2c5a8f8957df0cc530783f896

Threat Level: Known bad

The file 6b78492169ace001ed943e1c098dbc78 was found to be: Known bad.

Malicious Activity Summary

darkcomet guest16 evasion persistence rat trojan upx

Darkcomet

Modifies WinLogon for persistence

Modifies security service

Windows security bypass

Modifies firewall policy service

Darkcomet family

Sets file to hidden

Disables RegEdit via registry modification

Disables Task Manager via registry modification

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Windows security modification

UPX packed file

Adds Run key to start application

Suspicious use of SetThreadContext

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Views/modifies file attributes

Suspicious use of WriteProcessMemory

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-20 21:02

Signatures

Darkcomet family

darkcomet

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-20 21:02

Reported

2024-01-20 21:05

Platform

win7-20231215-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Modifies firewall policy service

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" C:\Windows\MSDCSC\msdcsc.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Modifies security service

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Disables RegEdit via registry modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Disables Task Manager via registry modification

evasion

Sets file to hidden

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\MSDCSC\msdcsc.exe N/A

UPX packed file

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

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2844 set thread context of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
File opened for modification C:\Windows\MSDCSC\ C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
File created C:\Windows\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSecurityPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemtimePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeBackupPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeRestorePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeUndockPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeManageVolumePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2672 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2164 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2672 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2164 wrote to memory of 2832 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2164 wrote to memory of 2832 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2164 wrote to memory of 2832 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2164 wrote to memory of 2832 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2672 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2672 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2672 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2672 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2844 wrote to memory of 2628 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion C:\Windows\MSDCSC\msdcsc.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe

"C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe" +s +h

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe" +s +h

C:\Windows\MSDCSC\msdcsc.exe

"C:\Windows\MSDCSC\msdcsc.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

Network

N/A

Files

memory/2672-0-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2672-1-0x00000000003D0000-0x00000000003D1000-memory.dmp

C:\Windows\MSDCSC\msdcsc.exe

MD5 6b78492169ace001ed943e1c098dbc78
SHA1 c81c521e28d81be3dd1ea6d9980af29ef79e944c
SHA256 88695f106560d1c1848111fdcef15e2983f0f0f2c5a8f8957df0cc530783f896
SHA512 2fcc6591dd012a1d8a6a7d4b145c51ac07e00ffcb7906c9bc42804a19cf287dfa917e166f1b423c3a69e97b70520dd4605024a998e6e7f2c88a06d218f08f920

memory/2672-12-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2844-13-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2844-15-0x00000000003E0000-0x00000000003E1000-memory.dmp

memory/2628-16-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2844-17-0x0000000000400000-0x00000000004BA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-20 21:02

Reported

2024-01-20 21:04

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Modifies firewall policy service

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" C:\Windows\MSDCSC\msdcsc.exe N/A

Modifies security service

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" C:\Windows\MSDCSC\msdcsc.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Disables RegEdit via registry modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Disables Task Manager via registry modification

evasion

Sets file to hidden

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\MSDCSC\msdcsc.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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Windows security modification

evasion trojan
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
File opened for modification C:\Windows\MSDCSC\msdcsc.exe C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
File opened for modification C:\Windows\MSDCSC\ C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\MSDCSC\msdcsc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Windows\MSDCSC\msdcsc.exe N/A
Token: 36 N/A C:\Windows\MSDCSC\msdcsc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2432 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2432 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2432 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2432 wrote to memory of 1584 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2432 wrote to memory of 1584 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2432 wrote to memory of 1584 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\SysWOW64\cmd.exe
PID 2348 wrote to memory of 232 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2348 wrote to memory of 232 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2348 wrote to memory of 232 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 1584 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 1584 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 1584 wrote to memory of 4968 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\attrib.exe
PID 2432 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2432 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 2432 wrote to memory of 4608 N/A C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe C:\Windows\MSDCSC\msdcsc.exe
PID 4608 wrote to memory of 4724 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 4608 wrote to memory of 4724 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 4608 wrote to memory of 4724 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 4608 wrote to memory of 1824 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\explorer.exe
PID 4608 wrote to memory of 1824 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\explorer.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe
PID 4608 wrote to memory of 4388 N/A C:\Windows\MSDCSC\msdcsc.exe C:\Windows\SysWOW64\notepad.exe

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion C:\Windows\MSDCSC\msdcsc.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern C:\Windows\MSDCSC\msdcsc.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" C:\Windows\MSDCSC\msdcsc.exe N/A

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A
N/A N/A C:\Windows\SysWOW64\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe

"C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe" +s +h

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp\6b78492169ace001ed943e1c098dbc78.exe" +s +h

C:\Windows\SysWOW64\attrib.exe

attrib "C:\Users\Admin\AppData\Local\Temp" +s +h

C:\Windows\MSDCSC\msdcsc.exe

"C:\Windows\MSDCSC\msdcsc.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Windows\SysWOW64\notepad.exe

notepad

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
N/A 10.127.0.18:27015 tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
RU 94.243.21.22:27015 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
N/A 10.127.0.18:27015 tcp
RU 94.243.21.22:27015 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
N/A 10.127.0.18:27015 tcp
RU 94.243.21.22:27015 tcp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
N/A 10.127.0.18:27015 tcp
RU 94.243.21.22:27015 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 186.178.17.96.in-addr.arpa udp
N/A 10.127.0.18:27015 tcp
RU 94.243.21.22:27015 tcp
N/A 10.127.0.18:27015 tcp
RU 94.243.21.22:27015 tcp
N/A 10.127.0.18:27015 tcp
US 8.8.8.8:53 26.73.42.20.in-addr.arpa udp
RU 94.243.21.22:27015 tcp

Files

memory/2432-0-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2432-1-0x00000000024E0000-0x00000000024E1000-memory.dmp

C:\Windows\MSDCSC\msdcsc.exe

MD5 6b78492169ace001ed943e1c098dbc78
SHA1 c81c521e28d81be3dd1ea6d9980af29ef79e944c
SHA256 88695f106560d1c1848111fdcef15e2983f0f0f2c5a8f8957df0cc530783f896
SHA512 2fcc6591dd012a1d8a6a7d4b145c51ac07e00ffcb7906c9bc42804a19cf287dfa917e166f1b423c3a69e97b70520dd4605024a998e6e7f2c88a06d218f08f920

memory/2432-63-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-62-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-64-0x00000000006B0000-0x00000000006B1000-memory.dmp

memory/4388-65-0x0000000001360000-0x0000000001361000-memory.dmp

memory/4608-66-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-68-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-70-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-73-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-75-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4608-77-0x0000000000400000-0x00000000004BA000-memory.dmp