darkcomet | 7467389d865089caa1830efa45ba37ff408f723dd0debf0e94d3fe4376aa1408

General

Target

3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
Size

993KB
MD5

3216b81f9731256d3fe49c62121990a0
SHA1

31bf55a24ade293b3ea91416a9cfe0d2caa9b1c3
SHA256

7467389d865089caa1830efa45ba37ff408f723dd0debf0e94d3fe4376aa1408
SHA512

7a6ba796d6eb647669596c1402c6f54a265383e30cdb45a896241bb2513881e374ddc065230aaef8c0b572954f50548b52ac63afeda80f6efd1addb6e4529286
SSDEEP

24576:F1CjRNrxmiRwxeFfZMRWn1fObCb4yZQgr:F2NNmvEFOotr6k

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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

Executes dropped EXE 1 IoCs

pid	Process
2568	vbc.exe

Loads dropped DLL 6 IoCs

pid	Process
2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
784	WerFault.exe
784	WerFault.exe
784	WerFault.exe
784	WerFault.exe
784	WerFault.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe"	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\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 2300 set thread context of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
784	2568	WerFault.exe	30

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2568	vbc.exe
Token: SeSecurityPrivilege	2568	vbc.exe
Token: SeTakeOwnershipPrivilege	2568	vbc.exe
Token: SeLoadDriverPrivilege	2568	vbc.exe
Token: SeSystemProfilePrivilege	2568	vbc.exe
Token: SeSystemtimePrivilege	2568	vbc.exe
Token: SeProfSingleProcessPrivilege	2568	vbc.exe
Token: SeIncBasePriorityPrivilege	2568	vbc.exe
Token: SeCreatePagefilePrivilege	2568	vbc.exe
Token: SeBackupPrivilege	2568	vbc.exe
Token: SeRestorePrivilege	2568	vbc.exe
Token: SeShutdownPrivilege	2568	vbc.exe
Token: SeDebugPrivilege	2568	vbc.exe
Token: SeSystemEnvironmentPrivilege	2568	vbc.exe
Token: SeChangeNotifyPrivilege	2568	vbc.exe
Token: SeRemoteShutdownPrivilege	2568	vbc.exe
Token: SeUndockPrivilege	2568	vbc.exe
Token: SeManageVolumePrivilege	2568	vbc.exe
Token: SeImpersonatePrivilege	2568	vbc.exe
Token: SeCreateGlobalPrivilege	2568	vbc.exe
Token: 33	2568	vbc.exe
Token: 34	2568	vbc.exe
Token: 35	2568	vbc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2300 wrote to memory of 2568	2300	3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe	30
PID 2568 wrote to memory of 2092	2568	vbc.exe	31
PID 2568 wrote to memory of 2092	2568	vbc.exe	31
PID 2568 wrote to memory of 2092	2568	vbc.exe	31
PID 2568 wrote to memory of 2092	2568	vbc.exe	31
PID 2568 wrote to memory of 784	2568	vbc.exe	33
PID 2568 wrote to memory of 784	2568	vbc.exe	33
PID 2568 wrote to memory of 784	2568	vbc.exe	33
PID 2568 wrote to memory of 784	2568	vbc.exe	33

C:\Users\Admin\AppData\Local\Temp\3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2092
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 616
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:784

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

System Information Discovery

1

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\tmpcmd.bat

Filesize
58B

MD5
f132f0ab5cb3552b78e927128e3d10bb

SHA1
92a52e0530e14eb3f6f117b44f55c685d4320960

SHA256
c7e1990999cb0558bfb59b0e75d7d2bf4417b902b70c92a18f1476ac2a239119

SHA512
811663c129c39cce366b2aa2a2e593ff0d7626c839ea6624620cba0983d6a9c9b5b8b2154aedd3592be00d2dc827606bbb9fba479035be15e7ecd838cfa7cb36

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

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2300-0-0x0000000074201000-0x0000000074202000-memory.dmp

Filesize
4KB

Download
memory/2300-1-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2300-2-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2300-26-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-16-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-25-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-18-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-17-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-14-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-11-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-19-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-24-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-27-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-22-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-28-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-9-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-13-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-46-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2568-48-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads