darkcomet | 23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca

Analysis

max time kernel
152s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2022 01:08

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General

Target

23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Size

647KB
MD5

82d7fb6f8eac4e9de4b56956763f3e20
SHA1

bcae4eb9f4d54b10935a943a0d2edf404a1f062e
SHA256

23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca
SHA512

0c413294befd737df17712aa66e441b478cf4b96629ac267d3dd2c4ffce567abcc86f09992e3eeda13fb554af27a73e1063a6c67215341675efd2d45308583bd
SSDEEP

12288:Q8UaT9XY2siA0bMG09xD7I3Gg8ecgVvfBoCDBOQQYbVXpuy1f/gORixD:JUKoN0bUxgGa/pfBHDb+y1HgZZ

Score

10^/10

darkcomet evasion persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	iexplore.exe

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
4740	attrib.exe
5056	attrib.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Roaming\\System32\\System.exe"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Roaming\\System32\\System.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 792 set thread context of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2488	iexplore.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeSecurityPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeTakeOwnershipPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeLoadDriverPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeSystemProfilePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeSystemtimePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeProfSingleProcessPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeIncBasePriorityPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeCreatePagefilePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeBackupPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeRestorePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeShutdownPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeDebugPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeSystemEnvironmentPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeChangeNotifyPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeRemoteShutdownPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeUndockPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeManageVolumePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeImpersonatePrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeCreateGlobalPrivilege	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: 33	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: 34	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: 35	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: 36	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Token: SeIncreaseQuotaPrivilege	2488	iexplore.exe
Token: SeSecurityPrivilege	2488	iexplore.exe
Token: SeTakeOwnershipPrivilege	2488	iexplore.exe
Token: SeLoadDriverPrivilege	2488	iexplore.exe
Token: SeSystemProfilePrivilege	2488	iexplore.exe
Token: SeSystemtimePrivilege	2488	iexplore.exe
Token: SeProfSingleProcessPrivilege	2488	iexplore.exe
Token: SeIncBasePriorityPrivilege	2488	iexplore.exe
Token: SeCreatePagefilePrivilege	2488	iexplore.exe
Token: SeBackupPrivilege	2488	iexplore.exe
Token: SeRestorePrivilege	2488	iexplore.exe
Token: SeShutdownPrivilege	2488	iexplore.exe
Token: SeDebugPrivilege	2488	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2488	iexplore.exe
Token: SeChangeNotifyPrivilege	2488	iexplore.exe
Token: SeRemoteShutdownPrivilege	2488	iexplore.exe
Token: SeUndockPrivilege	2488	iexplore.exe
Token: SeManageVolumePrivilege	2488	iexplore.exe
Token: SeImpersonatePrivilege	2488	iexplore.exe
Token: SeCreateGlobalPrivilege	2488	iexplore.exe
Token: 33	2488	iexplore.exe
Token: 34	2488	iexplore.exe
Token: 35	2488	iexplore.exe
Token: 36	2488	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2488	iexplore.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 2656	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	83
PID 792 wrote to memory of 2656	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	83
PID 792 wrote to memory of 2656	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	83
PID 792 wrote to memory of 2752	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	84
PID 792 wrote to memory of 2752	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	84
PID 792 wrote to memory of 2752	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	84
PID 792 wrote to memory of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87
PID 792 wrote to memory of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87
PID 792 wrote to memory of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87
PID 792 wrote to memory of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87
PID 792 wrote to memory of 2488	792	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe	87
PID 2656 wrote to memory of 4740	2656	cmd.exe	88
PID 2656 wrote to memory of 4740	2656	cmd.exe	88
PID 2656 wrote to memory of 4740	2656	cmd.exe	88
PID 2752 wrote to memory of 5056	2752	cmd.exe	89
PID 2752 wrote to memory of 5056	2752	cmd.exe	89
PID 2752 wrote to memory of 5056	2752	cmd.exe	89

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4740	attrib.exe
5056	attrib.exe

C:\Users\Admin\AppData\Local\Temp\23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe
"C:\Users\Admin\AppData\Local\Temp\23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe"
1⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\23c11251927fa2a1985305a1a1e9d9594023888ac962d55cc739b111ab8148ca.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:5056
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2488