darkcomet | 42fe2ee15d9d75d1dc3c456c3240dda7f875c6f2a4f7acbd607655d488032b1c

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
12/02/2024, 14:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

976299004249831506c9addef3cb6ae2.exe
Size

1.1MB
MD5

976299004249831506c9addef3cb6ae2
SHA1

28d0750d67a88c8bde6ce763ac8c77fffeceebfd
SHA256

42fe2ee15d9d75d1dc3c456c3240dda7f875c6f2a4f7acbd607655d488032b1c
SHA512

d5ac16e10e5481f21a7a2b2d9bf94ca0d3a963c17209ed6164ccfd539f655f39dd4b33f1c1093921173f1670e197903a5db94728f02b0787af4d3ce7d573bd27
SSDEEP

12288:VlyOEIzifoEqqx2XcLnsYRg87cvCPAq3djaCRvUXC9KykRvWIb0aeeXXR+oGElk+:cAXOsH6raCSXC9ZQb0beRbGFz+8hs

Score

10^/10

darkcomet trojan_sirio persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Trojan_Sirio

anonymouse38.no-ip.org:1604

Mutex

DC_MUTEX-52WK40U

Attributes

InstallPath
java.exe
gencode
u6VyVxB0Y4rH
install
true
offline_keylogger
true
persistence
true
reg_key
java

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

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\\Roaming\\java.exe"	dert6.exe

Executes dropped EXE 2 IoCs

pid	Process
3016	dert6.exe
2696	java.exe

Loads dropped DLL 4 IoCs

pid	Process
2156	976299004249831506c9addef3cb6ae2.exe
2156	976299004249831506c9addef3cb6ae2.exe
3016	dert6.exe
3016	dert6.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\java = "C:\\Users\\Admin\\AppData\\Roaming\\java.exe"	dert6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\java = "C:\\Users\\Admin\\AppData\\Roaming\\java.exe"	java.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3016	dert6.exe
Token: SeSecurityPrivilege	3016	dert6.exe
Token: SeTakeOwnershipPrivilege	3016	dert6.exe
Token: SeLoadDriverPrivilege	3016	dert6.exe
Token: SeSystemProfilePrivilege	3016	dert6.exe
Token: SeSystemtimePrivilege	3016	dert6.exe
Token: SeProfSingleProcessPrivilege	3016	dert6.exe
Token: SeIncBasePriorityPrivilege	3016	dert6.exe
Token: SeCreatePagefilePrivilege	3016	dert6.exe
Token: SeBackupPrivilege	3016	dert6.exe
Token: SeRestorePrivilege	3016	dert6.exe
Token: SeShutdownPrivilege	3016	dert6.exe
Token: SeDebugPrivilege	3016	dert6.exe
Token: SeSystemEnvironmentPrivilege	3016	dert6.exe
Token: SeChangeNotifyPrivilege	3016	dert6.exe
Token: SeRemoteShutdownPrivilege	3016	dert6.exe
Token: SeUndockPrivilege	3016	dert6.exe
Token: SeManageVolumePrivilege	3016	dert6.exe
Token: SeImpersonatePrivilege	3016	dert6.exe
Token: SeCreateGlobalPrivilege	3016	dert6.exe
Token: 33	3016	dert6.exe
Token: 34	3016	dert6.exe
Token: 35	3016	dert6.exe
Token: SeIncreaseQuotaPrivilege	2696	java.exe
Token: SeSecurityPrivilege	2696	java.exe
Token: SeTakeOwnershipPrivilege	2696	java.exe
Token: SeLoadDriverPrivilege	2696	java.exe
Token: SeSystemProfilePrivilege	2696	java.exe
Token: SeSystemtimePrivilege	2696	java.exe
Token: SeProfSingleProcessPrivilege	2696	java.exe
Token: SeIncBasePriorityPrivilege	2696	java.exe
Token: SeCreatePagefilePrivilege	2696	java.exe
Token: SeBackupPrivilege	2696	java.exe
Token: SeRestorePrivilege	2696	java.exe
Token: SeShutdownPrivilege	2696	java.exe
Token: SeDebugPrivilege	2696	java.exe
Token: SeSystemEnvironmentPrivilege	2696	java.exe
Token: SeChangeNotifyPrivilege	2696	java.exe
Token: SeRemoteShutdownPrivilege	2696	java.exe
Token: SeUndockPrivilege	2696	java.exe
Token: SeManageVolumePrivilege	2696	java.exe
Token: SeImpersonatePrivilege	2696	java.exe
Token: SeCreateGlobalPrivilege	2696	java.exe
Token: 33	2696	java.exe
Token: 34	2696	java.exe
Token: 35	2696	java.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2696	java.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 3016	2156	976299004249831506c9addef3cb6ae2.exe	28
PID 2156 wrote to memory of 3016	2156	976299004249831506c9addef3cb6ae2.exe	28
PID 2156 wrote to memory of 3016	2156	976299004249831506c9addef3cb6ae2.exe	28
PID 2156 wrote to memory of 3016	2156	976299004249831506c9addef3cb6ae2.exe	28
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29
PID 3016 wrote to memory of 2696	3016	dert6.exe	29

C:\Users\Admin\AppData\Local\Temp\976299004249831506c9addef3cb6ae2.exe
"C:\Users\Admin\AppData\Local\Temp\976299004249831506c9addef3cb6ae2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\dert6.exe
  "C:\Users\Admin\AppData\Local\Temp\dert6.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Users\Admin\AppData\Roaming\java.exe
    "C:\Users\Admin\AppData\Roaming\java.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2696

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\dert6.exe

Filesize
748KB

MD5
3ec49edd0acdd8b1438aabeb5dda3352

SHA1
6bd7d2249f6097cff67fff8afe6ed17d2951ee9e

SHA256
d2df0c789def5ee202345df57dfe5be6c651f5a6144c92906ae9a7214dbc4970

SHA512
b86b87a93f19a33d61955393b5742de32d2b12a9514eb3487bef9b4aa754ee75d4886cb781ef35443ef7c9fff0c66f5e00d7cc9df66e8d4b14576176fca3dba1

Download Submit
memory/2156-0-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2156-1-0x0000000001FF0000-0x0000000002030000-memory.dmp

Filesize
256KB

Download
memory/2156-2-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2156-13-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2696-27-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2696-28-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2696-30-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3016-12-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/3016-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads