darkcomet | 170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-10-2024 15:22

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General

Target

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Size

756KB
MD5

5d4944507c05892008b66b2ba9474af5
SHA1

1ccd3a438221a9cada327f019e90bfedefca23ea
SHA256

170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5
SHA512

65b5e10613f07c99cab45fcf66336605d8a718d4d263d215a33c30a48d0626ec2eae7e16592c307e46d971fcc7ab1ea2b738657770d624bee1fc88e21a1ec744
SSDEEP

12288:E9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hTI:IZ1xuVVjfFoynPaVBUR8f+kN10EBBI

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

arkanorg.no-ip.org:1604

Mutex

DC_MUTEX-UFK9EQ8

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
d1vpG230T6sj
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

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

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"	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2084	attrib.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
2248	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

pid	Process
2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

iexplore.exe5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description	pid	Process	procid_target
PID 2248 set thread context of 2860	2248	msdcsc.exe	35

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 6 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:

attrib.exemsdcsc.exeiexplore.exenotepad.exe5d4944507c05892008b66b2ba9474af5_JaffaCakes118.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid	Process
2860	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exemsdcsc.exeiexplore.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSecurityPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeBackupPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeRestorePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeShutdownPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeDebugPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeUndockPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 33	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 34	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 35	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2248	msdcsc.exe
Token: SeSecurityPrivilege	2248	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2248	msdcsc.exe
Token: SeLoadDriverPrivilege	2248	msdcsc.exe
Token: SeSystemProfilePrivilege	2248	msdcsc.exe
Token: SeSystemtimePrivilege	2248	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2248	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2248	msdcsc.exe
Token: SeCreatePagefilePrivilege	2248	msdcsc.exe
Token: SeBackupPrivilege	2248	msdcsc.exe
Token: SeRestorePrivilege	2248	msdcsc.exe
Token: SeShutdownPrivilege	2248	msdcsc.exe
Token: SeDebugPrivilege	2248	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2248	msdcsc.exe
Token: SeChangeNotifyPrivilege	2248	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2248	msdcsc.exe
Token: SeUndockPrivilege	2248	msdcsc.exe
Token: SeManageVolumePrivilege	2248	msdcsc.exe
Token: SeImpersonatePrivilege	2248	msdcsc.exe
Token: SeCreateGlobalPrivilege	2248	msdcsc.exe
Token: 33	2248	msdcsc.exe
Token: 34	2248	msdcsc.exe
Token: 35	2248	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2860	iexplore.exe
Token: SeSecurityPrivilege	2860	iexplore.exe
Token: SeTakeOwnershipPrivilege	2860	iexplore.exe
Token: SeLoadDriverPrivilege	2860	iexplore.exe
Token: SeSystemProfilePrivilege	2860	iexplore.exe
Token: SeSystemtimePrivilege	2860	iexplore.exe
Token: SeProfSingleProcessPrivilege	2860	iexplore.exe
Token: SeIncBasePriorityPrivilege	2860	iexplore.exe
Token: SeCreatePagefilePrivilege	2860	iexplore.exe
Token: SeBackupPrivilege	2860	iexplore.exe
Token: SeRestorePrivilege	2860	iexplore.exe
Token: SeShutdownPrivilege	2860	iexplore.exe
Token: SeDebugPrivilege	2860	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2860	iexplore.exe
Token: SeChangeNotifyPrivilege	2860	iexplore.exe
Token: SeRemoteShutdownPrivilege	2860	iexplore.exe
Token: SeUndockPrivilege	2860	iexplore.exe
Token: SeManageVolumePrivilege	2860	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid	Process
2860	iexplore.exe

Suspicious use of WriteProcessMemory 41 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.execmd.exemsdcsc.exeiexplore.exe

description	pid	Process	procid_target
PID 2404 wrote to memory of 2432	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2432	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2432	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2432	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	31
PID 2432 wrote to memory of 2084	2432	cmd.exe	33
PID 2432 wrote to memory of 2084	2432	cmd.exe	33
PID 2432 wrote to memory of 2084	2432	cmd.exe	33
PID 2432 wrote to memory of 2084	2432	cmd.exe	33
PID 2404 wrote to memory of 2248	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	34
PID 2404 wrote to memory of 2248	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	34
PID 2404 wrote to memory of 2248	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	34
PID 2404 wrote to memory of 2248	2404	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	34
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2248 wrote to memory of 2860	2248	msdcsc.exe	35
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36
PID 2860 wrote to memory of 2884	2860	iexplore.exe	36

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2084	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- 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:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2084
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2248
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2860
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2884

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
756KB

MD5
5d4944507c05892008b66b2ba9474af5

SHA1
1ccd3a438221a9cada327f019e90bfedefca23ea

SHA256
170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5

SHA512
65b5e10613f07c99cab45fcf66336605d8a718d4d263d215a33c30a48d0626ec2eae7e16592c307e46d971fcc7ab1ea2b738657770d624bee1fc88e21a1ec744

Download Submit
memory/2248-13-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2404-0-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/2404-53-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2860-12-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2884-14-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2884-52-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download