darkcomet | 30c6dca8d7298ad8b76d2b4fb29ba10778537df7552e5aeafaad63ffa7287807

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 13:34

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General

Target

xray.exe
Size

658KB
MD5

d10c9632d629e612688f4d899adad7ac
SHA1

23b80255a664d7218c388c0e4e4b059c37ea09af
SHA256

8cec15a4d96162345b86b2dc2219f182c194e5860febfbc698cf23eac91dcc72
SHA512

eb4a370049f00ef00296403c3028fcd7f472f34f1d07df02c28512c17ac5b18cbebc02024ad4a0849490cb5c085613fd0640b6a28cf3db4b2623cfca9afb5dec
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hj:KZ1xuVVjfFoynPaVBUR8f+kN10EBh

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

192.168.1.122:1604

Mutex

DC_MUTEX-20997BK

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
LEeu9F65GHcF
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
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

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"	xray.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	msdcsc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Executes dropped EXE 1 IoCs

pid	Process
2248	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	xray.exe
2084	xray.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	xray.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2084	xray.exe
Token: SeSecurityPrivilege	2084	xray.exe
Token: SeTakeOwnershipPrivilege	2084	xray.exe
Token: SeLoadDriverPrivilege	2084	xray.exe
Token: SeSystemProfilePrivilege	2084	xray.exe
Token: SeSystemtimePrivilege	2084	xray.exe
Token: SeProfSingleProcessPrivilege	2084	xray.exe
Token: SeIncBasePriorityPrivilege	2084	xray.exe
Token: SeCreatePagefilePrivilege	2084	xray.exe
Token: SeBackupPrivilege	2084	xray.exe
Token: SeRestorePrivilege	2084	xray.exe
Token: SeShutdownPrivilege	2084	xray.exe
Token: SeDebugPrivilege	2084	xray.exe
Token: SeSystemEnvironmentPrivilege	2084	xray.exe
Token: SeChangeNotifyPrivilege	2084	xray.exe
Token: SeRemoteShutdownPrivilege	2084	xray.exe
Token: SeUndockPrivilege	2084	xray.exe
Token: SeManageVolumePrivilege	2084	xray.exe
Token: SeImpersonatePrivilege	2084	xray.exe
Token: SeCreateGlobalPrivilege	2084	xray.exe
Token: 33	2084	xray.exe
Token: 34	2084	xray.exe
Token: 35	2084	xray.exe
Token: SeIncreaseQuotaPrivilege	2248	msdcsc.exe
Token: SeSecurityPrivilege	2248	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2248	msdcsc.exe
Token: SeLoadDriverPrivilege	2248	msdcsc.exe
Token: SeSystemProfilePrivilege	2248	msdcsc.exe
Token: SeSystemtimePrivilege	2248	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2248	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2248	msdcsc.exe
Token: SeCreatePagefilePrivilege	2248	msdcsc.exe
Token: SeBackupPrivilege	2248	msdcsc.exe
Token: SeRestorePrivilege	2248	msdcsc.exe
Token: SeShutdownPrivilege	2248	msdcsc.exe
Token: SeDebugPrivilege	2248	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2248	msdcsc.exe
Token: SeChangeNotifyPrivilege	2248	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2248	msdcsc.exe
Token: SeUndockPrivilege	2248	msdcsc.exe
Token: SeManageVolumePrivilege	2248	msdcsc.exe
Token: SeImpersonatePrivilege	2248	msdcsc.exe
Token: SeCreateGlobalPrivilege	2248	msdcsc.exe
Token: 33	2248	msdcsc.exe
Token: 34	2248	msdcsc.exe
Token: 35	2248	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2248	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2248	2084	xray.exe	31
PID 2084 wrote to memory of 2248	2084	xray.exe	31
PID 2084 wrote to memory of 2248	2084	xray.exe	31
PID 2084 wrote to memory of 2248	2084	xray.exe	31

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\xray.exe
"C:\Users\Admin\AppData\Local\Temp\xray.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:2248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
658KB

MD5
d10c9632d629e612688f4d899adad7ac

SHA1
23b80255a664d7218c388c0e4e4b059c37ea09af

SHA256
8cec15a4d96162345b86b2dc2219f182c194e5860febfbc698cf23eac91dcc72

SHA512
eb4a370049f00ef00296403c3028fcd7f472f34f1d07df02c28512c17ac5b18cbebc02024ad4a0849490cb5c085613fd0640b6a28cf3db4b2623cfca9afb5dec

Download Submit
memory/2084-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2084-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2248-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2248-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads