darkcomet | 7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbed

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-12-2024 05:00

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General

Target

7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe
Size

621KB
MD5

c940561721d0f3ba4ecdc6f75254d860
SHA1

e76448bc9374bca193ce44e7c8b45a97f99c586b
SHA256

7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbed
SHA512

1a513a17810602990dc1f84e51958cdb874450b889343c5f2a5a0a643ccd0e198cf1a22aaebf99b9b83a49295cbf7164023bb305979280b32245d53af0a51d4b
SSDEEP

12288:fYQTKiAEfn2fQ2xDtiKU/MZEfzadOh0LvxZYDiI5tYMgz2R:VO4Yi6EfzaYh0Twj5ufzG

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

davaydavay123.no-ip.org:1610

Mutex

DC_MUTEX-JZVHV5Z

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
lV69QiAKlk5T
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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	EEL HD.exe

Executes dropped EXE 2 IoCs

pid	Process
2256	EEL HD.exe
1908	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe
1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe
2256	EEL HD.exe
2256	EEL HD.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	EEL HD.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 3 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	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EEL HD.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2256	EEL HD.exe
Token: SeSecurityPrivilege	2256	EEL HD.exe
Token: SeTakeOwnershipPrivilege	2256	EEL HD.exe
Token: SeLoadDriverPrivilege	2256	EEL HD.exe
Token: SeSystemProfilePrivilege	2256	EEL HD.exe
Token: SeSystemtimePrivilege	2256	EEL HD.exe
Token: SeProfSingleProcessPrivilege	2256	EEL HD.exe
Token: SeIncBasePriorityPrivilege	2256	EEL HD.exe
Token: SeCreatePagefilePrivilege	2256	EEL HD.exe
Token: SeBackupPrivilege	2256	EEL HD.exe
Token: SeRestorePrivilege	2256	EEL HD.exe
Token: SeShutdownPrivilege	2256	EEL HD.exe
Token: SeDebugPrivilege	2256	EEL HD.exe
Token: SeSystemEnvironmentPrivilege	2256	EEL HD.exe
Token: SeChangeNotifyPrivilege	2256	EEL HD.exe
Token: SeRemoteShutdownPrivilege	2256	EEL HD.exe
Token: SeUndockPrivilege	2256	EEL HD.exe
Token: SeManageVolumePrivilege	2256	EEL HD.exe
Token: SeImpersonatePrivilege	2256	EEL HD.exe
Token: SeCreateGlobalPrivilege	2256	EEL HD.exe
Token: 33	2256	EEL HD.exe
Token: 34	2256	EEL HD.exe
Token: 35	2256	EEL HD.exe
Token: SeIncreaseQuotaPrivilege	1908	msdcsc.exe
Token: SeSecurityPrivilege	1908	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1908	msdcsc.exe
Token: SeLoadDriverPrivilege	1908	msdcsc.exe
Token: SeSystemProfilePrivilege	1908	msdcsc.exe
Token: SeSystemtimePrivilege	1908	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1908	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1908	msdcsc.exe
Token: SeCreatePagefilePrivilege	1908	msdcsc.exe
Token: SeBackupPrivilege	1908	msdcsc.exe
Token: SeRestorePrivilege	1908	msdcsc.exe
Token: SeShutdownPrivilege	1908	msdcsc.exe
Token: SeDebugPrivilege	1908	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1908	msdcsc.exe
Token: SeChangeNotifyPrivilege	1908	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1908	msdcsc.exe
Token: SeUndockPrivilege	1908	msdcsc.exe
Token: SeManageVolumePrivilege	1908	msdcsc.exe
Token: SeImpersonatePrivilege	1908	msdcsc.exe
Token: SeCreateGlobalPrivilege	1908	msdcsc.exe
Token: 33	1908	msdcsc.exe
Token: 34	1908	msdcsc.exe
Token: 35	1908	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1908	msdcsc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 2256	1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe	30
PID 1292 wrote to memory of 2256	1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe	30
PID 1292 wrote to memory of 2256	1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe	30
PID 1292 wrote to memory of 2256	1292	7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe	30
PID 2256 wrote to memory of 1908	2256	EEL HD.exe	31
PID 2256 wrote to memory of 1908	2256	EEL HD.exe	31
PID 2256 wrote to memory of 1908	2256	EEL HD.exe	31
PID 2256 wrote to memory of 1908	2256	EEL HD.exe	31

C:\Users\Admin\AppData\Local\Temp\7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe
"C:\Users\Admin\AppData\Local\Temp\7834fcbf6afbd23b8c94d2374b1ff4f07576110f5a06ee62c96b9c745df3dbedN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\Temp\EEL HD.exe
  "C:\Users\Admin\AppData\Local\Temp\EEL HD.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2256
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1908

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

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

C:\Users\Admin\AppData\Local\Temp\EEL HD.exe

Filesize
690KB

MD5
3216822dade31e777ac71c9a70d3a0b6

SHA1
5324d604ab4b91469dd83fc2f938aa82a28206a9

SHA256
a477829c4b60e0472a8a273aae0a2a2cc7d1905c209f901e92d87c71a3f9da7f

SHA512
2f0de9ab263f6592c1c54b58580598a5232c2716c164f099828acdd37debafa60989022bdce3083e35c4ea1418562f9295772917fb8d249cc99835ff83c912fc

Download Submit
memory/1908-30-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-29-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-35-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-25-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-26-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-27-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-28-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-22-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1908-34-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-31-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-32-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1908-33-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2256-10-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2256-24-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads