darkcomet | 34c843be3ed2097ad33741027bf04d74c9bb66089a9790d6c4caf4663766a963

General

Target

JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe
Size

792KB
MD5

3fedaaa6b14e21d998c10390b968ab3a
SHA1

40247208ec288e37c71ff5b31e5a04588a5051ce
SHA256

34c843be3ed2097ad33741027bf04d74c9bb66089a9790d6c4caf4663766a963
SHA512

301fb9f50afc644185a70930f2ae640bdfbe9433d14175f696598dd2d9d5fd880519a2afca0a09017378c16535025d348e6dac34b4e28afd58be16c4ee250b27
SSDEEP

24576:VTCRQwVk9ARxR/GsrluIJrqM5tCUhXdrp:URNVXFGS35wo

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

vertexking.no-ip.org:999

Mutex

DC_MUTEX-LQMAH1E

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
nXqAHZmfTLW0
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

rc4.plain

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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	csc.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2892	attrib.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flow1	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Flow1	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe

Executes dropped EXE 1 IoCs

pid	Process
3652	msdcsc.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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Flow = "C:\\Users\\Admin\\AppData\\Local\\NGen.exe"	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	csc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	csc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	csc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	csc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2376 set thread context of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1168	csc.exe
Token: SeSecurityPrivilege	1168	csc.exe
Token: SeTakeOwnershipPrivilege	1168	csc.exe
Token: SeLoadDriverPrivilege	1168	csc.exe
Token: SeSystemProfilePrivilege	1168	csc.exe
Token: SeSystemtimePrivilege	1168	csc.exe
Token: SeProfSingleProcessPrivilege	1168	csc.exe
Token: SeIncBasePriorityPrivilege	1168	csc.exe
Token: SeCreatePagefilePrivilege	1168	csc.exe
Token: SeBackupPrivilege	1168	csc.exe
Token: SeRestorePrivilege	1168	csc.exe
Token: SeShutdownPrivilege	1168	csc.exe
Token: SeDebugPrivilege	1168	csc.exe
Token: SeSystemEnvironmentPrivilege	1168	csc.exe
Token: SeChangeNotifyPrivilege	1168	csc.exe
Token: SeRemoteShutdownPrivilege	1168	csc.exe
Token: SeUndockPrivilege	1168	csc.exe
Token: SeManageVolumePrivilege	1168	csc.exe
Token: SeImpersonatePrivilege	1168	csc.exe
Token: SeCreateGlobalPrivilege	1168	csc.exe
Token: 33	1168	csc.exe
Token: 34	1168	csc.exe
Token: 35	1168	csc.exe
Token: 36	1168	csc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 2376 wrote to memory of 1168	2376	JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe	85
PID 1168 wrote to memory of 4784	1168	csc.exe	87
PID 1168 wrote to memory of 4784	1168	csc.exe	87
PID 1168 wrote to memory of 4784	1168	csc.exe	87
PID 1168 wrote to memory of 3652	1168	csc.exe	89
PID 1168 wrote to memory of 3652	1168	csc.exe	89
PID 1168 wrote to memory of 3652	1168	csc.exe	89
PID 4784 wrote to memory of 2892	4784	cmd.exe	92
PID 4784 wrote to memory of 2892	4784	cmd.exe	92
PID 4784 wrote to memory of 2892	4784	cmd.exe	92

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2892	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3fedaaa6b14e21d998c10390b968ab3a.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4784
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2892
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3652

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

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

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:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
78KB

MD5
2b9482eb5d3af71029277e18f6c656c0

SHA1
d594dc39c6e5f8fbd145d8970e096dc1d9b4a7f1

SHA256
1be7a63415f03400065f2beb2ca991c8b0b914bd41310cf9dd93c5e1fc0ed072

SHA512
46abaf2e57e498dd60352f76b484825eff7ebdd89cf512ba046d229d5d24a34e5f67c48a1d59551e0b49603a1ffee2ffbc124eef0042ddf3fe7fae423b4af0a8

Download Submit
memory/1168-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1168-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1168-5-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1168-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1168-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2376-0-0x00000000753F2000-0x00000000753F3000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/2376-2-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/2376-25-0x00000000753F2000-0x00000000753F3000-memory.dmp

Filesize
4KB

Download
memory/2376-26-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/2376-27-0x00000000753F0000-0x00000000759A1000-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