darkcomet | f325a078aaa41aaf0c5f619dd2b6d9d1e4fb9837cc54aa2ab71c88aae95580db

General

Target

0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe
Size

12.3MB
MD5

0d37824cb0dc10df2966d847302e3134
SHA1

e163829ff705fb291800039cd76329c4d5d89787
SHA256

f325a078aaa41aaf0c5f619dd2b6d9d1e4fb9837cc54aa2ab71c88aae95580db
SHA512

81be17af1314fa34e5154e3e12ee53cf50c23b6fa8054656b181a570da0212f1696aa24d85bbce06d2d48a57e6fffc7d512bf28d5b2a7e74bb2c76859fff38c5
SSDEEP

393216:JEgHFEEvurJSPUObk/q40p+iZKdwmJRXe08AxWouRlRSDxl49:CIFEEvurJSPUObk/q40p+iZkwmJRX981

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

activatedmasric.no-ip.info:4899

Mutex

DC_MUTEX-61V7TCV

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
9HHCTuEUFRd0
install
true
offline_keylogger
true
persistence
true
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

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"	vbc.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
3368	vbc.exe
936	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdtr\\0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe"	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4052 set thread context of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\Local Settings	vbc.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2628	vlc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2628	vlc.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3368	vbc.exe
Token: SeSecurityPrivilege	3368	vbc.exe
Token: SeTakeOwnershipPrivilege	3368	vbc.exe
Token: SeLoadDriverPrivilege	3368	vbc.exe
Token: SeSystemProfilePrivilege	3368	vbc.exe
Token: SeSystemtimePrivilege	3368	vbc.exe
Token: SeProfSingleProcessPrivilege	3368	vbc.exe
Token: SeIncBasePriorityPrivilege	3368	vbc.exe
Token: SeCreatePagefilePrivilege	3368	vbc.exe
Token: SeBackupPrivilege	3368	vbc.exe
Token: SeRestorePrivilege	3368	vbc.exe
Token: SeShutdownPrivilege	3368	vbc.exe
Token: SeDebugPrivilege	3368	vbc.exe
Token: SeSystemEnvironmentPrivilege	3368	vbc.exe
Token: SeChangeNotifyPrivilege	3368	vbc.exe
Token: SeRemoteShutdownPrivilege	3368	vbc.exe
Token: SeUndockPrivilege	3368	vbc.exe
Token: SeManageVolumePrivilege	3368	vbc.exe
Token: SeImpersonatePrivilege	3368	vbc.exe
Token: SeCreateGlobalPrivilege	3368	vbc.exe
Token: 33	3368	vbc.exe
Token: 34	3368	vbc.exe
Token: 35	3368	vbc.exe
Token: 36	3368	vbc.exe
Token: 33	4736	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4736	AUDIODG.EXE
Token: 33	2628	vlc.exe
Token: SeIncBasePriorityPrivilege	2628	vlc.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe

Suspicious use of SendNotifyMessage 8 IoCs

pid	Process
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe
2628	vlc.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 4052 wrote to memory of 3368	4052	0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe	84
PID 3368 wrote to memory of 2628	3368	vbc.exe	85
PID 3368 wrote to memory of 2628	3368	vbc.exe	85
PID 3368 wrote to memory of 936	3368	vbc.exe	86
PID 3368 wrote to memory of 936	3368	vbc.exe	86
PID 3368 wrote to memory of 936	3368	vbc.exe	86

C:\Users\Admin\AppData\Local\Temp\0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0d37824cb0dc10df2966d847302e3134_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3368
- - C:\Program Files\VideoLAN\VLC\vlc.exe
    "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\MAMATA WALKS OUT OF SHOW, CALLS STUDENTS MAOISTS - YOUTUBE.MP4"
    3⤵
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    PID:2628
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:936

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4d4 0x510
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\MAMATA WALKS OUT OF SHOW, CALLS STUDENTS MAOISTS - YOUTUBE.MP4

Filesize
7.1MB

MD5
17c8b58c288efb141ce02b16f8d497a9

SHA1
88f683db816b531e635c5c7751ceea57fab9a33a

SHA256
02cda387961af9a7e28d06f6974508763a64b33dfcecdfb4b84743493feacee8

SHA512
1ea849facbf1e4169ad221407124da8a45da7a658dfdbd51377bddd0592ac5adb712015434af58fa8d0b9c12d0afde953a7ae29d609936e59221a1e404e4c12b

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/2628-46-0x00007FFC20290000-0x00007FFC202A7000-memory.dmp

Filesize
92KB

Download
memory/2628-58-0x00007FFC1B3D0000-0x00007FFC1B3E1000-memory.dmp

Filesize
68KB

Download
memory/2628-53-0x00007FFC0F3D0000-0x00007FFC10480000-memory.dmp

Filesize
16.7MB

Download
memory/2628-54-0x00007FFC1F960000-0x00007FFC1F9A1000-memory.dmp

Filesize
260KB

Download
memory/2628-52-0x00007FFC10480000-0x00007FFC1068B000-memory.dmp

Filesize
2.0MB

Download
memory/2628-55-0x00007FFC1EE50000-0x00007FFC1EE71000-memory.dmp

Filesize
132KB

Download
memory/2628-56-0x00007FFC1FB20000-0x00007FFC1FB38000-memory.dmp

Filesize
96KB

Download
memory/2628-51-0x00007FFC1FB40000-0x00007FFC1FB51000-memory.dmp

Filesize
68KB

Download
memory/2628-50-0x00007FFC1FB60000-0x00007FFC1FB7D000-memory.dmp

Filesize
116KB

Download
memory/2628-47-0x00007FFC200F0000-0x00007FFC20101000-memory.dmp

Filesize
68KB

Download
memory/2628-42-0x00007FF79A730000-0x00007FF79A828000-memory.dmp

Filesize
992KB

Download
memory/2628-43-0x00007FFC203D0000-0x00007FFC20404000-memory.dmp

Filesize
208KB

Download
memory/2628-59-0x00007FFC1AA40000-0x00007FFC1AA51000-memory.dmp

Filesize
68KB

Download
memory/2628-57-0x00007FFC1B3F0000-0x00007FFC1B401000-memory.dmp

Filesize
68KB

Download
memory/2628-45-0x00007FFC202B0000-0x00007FFC202C8000-memory.dmp

Filesize
96KB

Download
memory/2628-49-0x00007FFC20070000-0x00007FFC20081000-memory.dmp

Filesize
68KB

Download
memory/2628-44-0x00007FFC10B80000-0x00007FFC10E36000-memory.dmp

Filesize
2.7MB

Download
memory/2628-48-0x00007FFC200D0000-0x00007FFC200E7000-memory.dmp

Filesize
92KB

Download
memory/3368-16-0x0000000002B40000-0x0000000002B41000-memory.dmp

Filesize
4KB

Download
memory/3368-14-0x0000000000400000-0x0000000000BD3000-memory.dmp

Filesize
7.8MB

Download
memory/3368-7-0x0000000000400000-0x0000000000BD3000-memory.dmp

Filesize
7.8MB

Download
memory/3368-40-0x0000000000400000-0x0000000000BD3000-memory.dmp

Filesize
7.8MB

Download
memory/3368-12-0x0000000000400000-0x0000000000BD3000-memory.dmp

Filesize
7.8MB

Download
memory/3368-10-0x0000000000400000-0x0000000000BD3000-memory.dmp

Filesize
7.8MB

Download
memory/4052-0-0x00000000750A2000-0x00000000750A3000-memory.dmp

Filesize
4KB

Download
memory/4052-1-0x00000000750A0000-0x0000000075651000-memory.dmp

Filesize
5.7MB

Download
memory/4052-15-0x00000000750A0000-0x0000000075651000-memory.dmp

Filesize
5.7MB

Download
memory/4052-2-0x00000000750A0000-0x0000000075651000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads