darkcomet | 5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

Analysis

max time kernel
153s
max time network
185s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 22:32

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General

Target

5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Size

758KB
MD5

984cc506b7124dafeb1a401124d315b7
SHA1

e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798
SHA256

5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381
SHA512

de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834
SSDEEP

12288:rXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452Ul:znAw2WWeFcfbP9VPSPMTSPL/rWvzq4JV

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

blinko.no-ip.biz:1604

Mutex

DC_MUTEX-XEP2LCR

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Qx6wzbzu70U9
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe

Modifies firewall policy service 2 TTPs 3 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"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe

Windows security bypass 2 TTPs 1 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"	msdcsc.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	msdcsc.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
4036	attrib.exe
1724	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe

Windows security modification 2 TTPs 1 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"	msdcsc.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe

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
4492	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSecurityPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeTakeOwnershipPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeLoadDriverPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemProfilePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemtimePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeProfSingleProcessPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeIncBasePriorityPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeCreatePagefilePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeBackupPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeRestorePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeShutdownPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeDebugPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeSystemEnvironmentPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeChangeNotifyPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeRemoteShutdownPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeUndockPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeManageVolumePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeImpersonatePrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeCreateGlobalPrivilege	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 33	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 34	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 35	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: 36	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
Token: SeIncreaseQuotaPrivilege	4492	msdcsc.exe
Token: SeSecurityPrivilege	4492	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4492	msdcsc.exe
Token: SeLoadDriverPrivilege	4492	msdcsc.exe
Token: SeSystemProfilePrivilege	4492	msdcsc.exe
Token: SeSystemtimePrivilege	4492	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4492	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4492	msdcsc.exe
Token: SeCreatePagefilePrivilege	4492	msdcsc.exe
Token: SeBackupPrivilege	4492	msdcsc.exe
Token: SeRestorePrivilege	4492	msdcsc.exe
Token: SeShutdownPrivilege	4492	msdcsc.exe
Token: SeDebugPrivilege	4492	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4492	msdcsc.exe
Token: SeChangeNotifyPrivilege	4492	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4492	msdcsc.exe
Token: SeUndockPrivilege	4492	msdcsc.exe
Token: SeManageVolumePrivilege	4492	msdcsc.exe
Token: SeImpersonatePrivilege	4492	msdcsc.exe
Token: SeCreateGlobalPrivilege	4492	msdcsc.exe
Token: 33	4492	msdcsc.exe
Token: 34	4492	msdcsc.exe
Token: 35	4492	msdcsc.exe
Token: 36	4492	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4492	msdcsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 4476	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	79
PID 2536 wrote to memory of 4476	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	79
PID 2536 wrote to memory of 4476	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	79
PID 2536 wrote to memory of 2576	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	81
PID 2536 wrote to memory of 2576	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	81
PID 2536 wrote to memory of 2576	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	81
PID 2536 wrote to memory of 4492	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	83
PID 2536 wrote to memory of 4492	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	83
PID 2536 wrote to memory of 4492	2536	5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe	83
PID 4476 wrote to memory of 4036	4476	cmd.exe	84
PID 4476 wrote to memory of 4036	4476	cmd.exe	84
PID 4476 wrote to memory of 4036	4476	cmd.exe	84
PID 2576 wrote to memory of 1724	2576	cmd.exe	85
PID 2576 wrote to memory of 1724	2576	cmd.exe	85
PID 2576 wrote to memory of 1724	2576	cmd.exe	85

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4036	attrib.exe
1724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe
"C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4476
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4036
- 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:2576
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1724
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4492

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

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

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
758KB

MD5
984cc506b7124dafeb1a401124d315b7

SHA1
e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798

SHA256
5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

SHA512
de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834

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C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
758KB

MD5
984cc506b7124dafeb1a401124d315b7

SHA1
e2938d7c3bfd74179fcb8f0b7e7c79e6c76f0798

SHA256
5e876286f3d2faa79f0627bf9bfd04f12f15fc2716457d308f8083611f8c1381

SHA512
de2d06123119f1ddea521fecda32130c25904235ee729ec168747f40f3ae9da484a64df67dc2aa7ad579cbab6eeebba325965e1c8d2ba83161660e397879a834

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads