darkcomet | a54374fbebdd89c10f55d3321a0d926f8631a1cb126598e9a502604c8031eafd

General

Target

gang.exe
Size

658KB
MD5

e7bd8408dd2f953a075215d62009b98f
SHA1

830c1f58cbd35b7dbcbc955ae4bcdb3d753c7f4c
SHA256

a54374fbebdd89c10f55d3321a0d926f8631a1cb126598e9a502604c8031eafd
SHA512

8dc8af946d701452bc0467725067616b7962024ec694be3b1d67c3e1ed07487c5dec3e168a2c76008c65d7769688548c86a2895af3cb176d044fed8820375ea1
SSDEEP

12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hW:eZ1xuVVjfFoynPaVBUR8f+kN10EBQ

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-SLWCWZC

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
plL1zEd99z7k
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

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

Processes:

gang.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	gang.exe

Executes dropped EXE 1 IoCs

Processes:

IMDCSC.exe

pid process

2100 IMDCSC.exe
Loads dropped DLL 2 IoCs

Processes:

gang.exe

pid process

2520 gang.exe
2520 gang.exe

pid	process
2100	IMDCSC.exe

pid	process
2520	gang.exe
2520	gang.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

gang.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	gang.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 5 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

Processes:

IMDCSC.exeDllHost.exeEXCEL.EXEEXCEL.EXEgang.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gang.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXEEXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

EXCEL.EXEEXCEL.EXE

pid process

2644 EXCEL.EXE
2656 EXCEL.EXE

pid	process
2644	EXCEL.EXE
2656	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

taskmgr.exe

pid	process
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

taskmgr.exe

pid process

2820 taskmgr.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

Processes:

gang.exeIMDCSC.exetaskmgr.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2520	gang.exe
Token: SeSecurityPrivilege	2520	gang.exe
Token: SeTakeOwnershipPrivilege	2520	gang.exe
Token: SeLoadDriverPrivilege	2520	gang.exe
Token: SeSystemProfilePrivilege	2520	gang.exe
Token: SeSystemtimePrivilege	2520	gang.exe
Token: SeProfSingleProcessPrivilege	2520	gang.exe
Token: SeIncBasePriorityPrivilege	2520	gang.exe
Token: SeCreatePagefilePrivilege	2520	gang.exe
Token: SeBackupPrivilege	2520	gang.exe
Token: SeRestorePrivilege	2520	gang.exe
Token: SeShutdownPrivilege	2520	gang.exe
Token: SeDebugPrivilege	2520	gang.exe
Token: SeSystemEnvironmentPrivilege	2520	gang.exe
Token: SeChangeNotifyPrivilege	2520	gang.exe
Token: SeRemoteShutdownPrivilege	2520	gang.exe
Token: SeUndockPrivilege	2520	gang.exe
Token: SeManageVolumePrivilege	2520	gang.exe
Token: SeImpersonatePrivilege	2520	gang.exe
Token: SeCreateGlobalPrivilege	2520	gang.exe
Token: 33	2520	gang.exe
Token: 34	2520	gang.exe
Token: 35	2520	gang.exe
Token: SeIncreaseQuotaPrivilege	2100	IMDCSC.exe
Token: SeSecurityPrivilege	2100	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	2100	IMDCSC.exe
Token: SeLoadDriverPrivilege	2100	IMDCSC.exe
Token: SeSystemProfilePrivilege	2100	IMDCSC.exe
Token: SeSystemtimePrivilege	2100	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	2100	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	2100	IMDCSC.exe
Token: SeCreatePagefilePrivilege	2100	IMDCSC.exe
Token: SeBackupPrivilege	2100	IMDCSC.exe
Token: SeRestorePrivilege	2100	IMDCSC.exe
Token: SeShutdownPrivilege	2100	IMDCSC.exe
Token: SeDebugPrivilege	2100	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	2100	IMDCSC.exe
Token: SeChangeNotifyPrivilege	2100	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	2100	IMDCSC.exe
Token: SeUndockPrivilege	2100	IMDCSC.exe
Token: SeManageVolumePrivilege	2100	IMDCSC.exe
Token: SeImpersonatePrivilege	2100	IMDCSC.exe
Token: SeCreateGlobalPrivilege	2100	IMDCSC.exe
Token: 33	2100	IMDCSC.exe
Token: 34	2100	IMDCSC.exe
Token: 35	2100	IMDCSC.exe
Token: SeDebugPrivilege	2820	taskmgr.exe

Suspicious use of FindShellTrayWindow 44 IoCs

Processes:

taskmgr.exe

pid	process
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe

Suspicious use of SendNotifyMessage 44 IoCs

Processes:

taskmgr.exe

pid	process
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe
2820	taskmgr.exe

Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

IMDCSC.exeEXCEL.EXEEXCEL.EXE

pid process

2100 IMDCSC.exe
2644 EXCEL.EXE
2644 EXCEL.EXE
2644 EXCEL.EXE
2656 EXCEL.EXE
2656 EXCEL.EXE
2656 EXCEL.EXE

pid	process
2100	IMDCSC.exe
2644	EXCEL.EXE
2644	EXCEL.EXE
2644	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

gang.exe

description	pid	process	target process
PID 2520 wrote to memory of 2100	2520	gang.exe	IMDCSC.exe
PID 2520 wrote to memory of 2100	2520	gang.exe	IMDCSC.exe
PID 2520 wrote to memory of 2100	2520	gang.exe	IMDCSC.exe
PID 2520 wrote to memory of 2100	2520	gang.exe	IMDCSC.exe

C:\Users\Admin\AppData\Local\Temp\gang.exe
"C:\Users\Admin\AppData\Local\Temp\gang.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:2520
- C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
  "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2100

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2820

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
- System Location Discovery: System Language Discovery
PID:2892

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2644

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
313B

MD5
44c83fc55f6c3fbcc266defd38c90ea1

SHA1
70a34439bb18350259434aa477a5d557ea0fbdde

SHA256
2d2d229fb1ec11158b9131338a0133505eeaa4d8258e4cb84ad4d2c493908206

SHA512
116589eeb57c03fbba4d32855bddd567e89737e359c179ad6b34335e5c3d60d57bf020b03210f469106adf5b399f5700c7a9132b1320bbc24cde37875dfb48c8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
313B

MD5
168dc3fd2aeecddb1e652bddf06c1cf9

SHA1
1798d79da083cc483b898a55ef7f24e16f224ae6

SHA256
74489be6e9249489132166a14ed3b0628f0eb4e8244092c94f1e1739b431c81a

SHA512
fcfcb2fd3e3ab7a734670903a13eca098fd35a8f1a8f0504c00a38de31ab7a407f2532c553703333f353009b04420910324ae7c082caf4fd03e23807bbb675f6

Download Submit
\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
658KB

MD5
e7bd8408dd2f953a075215d62009b98f

SHA1
830c1f58cbd35b7dbcbc955ae4bcdb3d753c7f4c

SHA256
a54374fbebdd89c10f55d3321a0d926f8631a1cb126598e9a502604c8031eafd

SHA512
8dc8af946d701452bc0467725067616b7962024ec694be3b1d67c3e1ed07487c5dec3e168a2c76008c65d7769688548c86a2895af3cb176d044fed8820375ea1

Download Submit
memory/2100-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2100-14-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/2100-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2100-10-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/2100-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2100-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2100-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2100-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2520-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2520-0-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2644-26-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2644-38-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2656-39-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2820-19-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2820-17-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2820-16-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads