darkcomet | a50b6193e2bdda6bf35018e9e05ff520181228be00f975d3d69282bf945bad93

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
06/10/2024, 13:44

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General

Target

1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Size

756KB
MD5

1853e7c8b1b062e5f38559ba957bd6ff
SHA1

b5a07baa516c646ccb389eb4219feae21b118c6e
SHA256

a50b6193e2bdda6bf35018e9e05ff520181228be00f975d3d69282bf945bad93
SHA512

8d12c94210c6ca6079c14a071815343441d300595657c2e71146c62feea5f73b6d823a0630f2e16043c4c618b056072fed695c94f1f7694b5326ed567bd31d1b
SSDEEP

12288:69HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hfh:2Z1xuVVjfFoynPaVBUR8f+kN10EBlh

Score

10^/10

darkcomet kurban discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Kurban

myd.servemp3.com:81

Mutex

DC_MUTEX-68WDUQN

Attributes

InstallPath
Csrss\Csrss.exe
gencode
qJ7zKmGtRf8L
install
true
offline_keylogger
true
persistence
false
reg_key
Csrss

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:\\Windows\\system32\\Csrss\\Csrss.exe"	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	Csrss.exe

Loads dropped DLL 2 IoCs

pid	Process
1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Csrss = "C:\\Windows\\system32\\Csrss\\Csrss.exe"	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Csrss\	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\Csrss\Csrss.exe	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Csrss\Csrss.exe	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2676	2812	Csrss.exe	32

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 4 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	Csrss.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	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2676	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeSecurityPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeBackupPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeRestorePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeShutdownPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeDebugPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeUndockPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: 33	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: 34	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: 35	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2812	Csrss.exe
Token: SeSecurityPrivilege	2812	Csrss.exe
Token: SeTakeOwnershipPrivilege	2812	Csrss.exe
Token: SeLoadDriverPrivilege	2812	Csrss.exe
Token: SeSystemProfilePrivilege	2812	Csrss.exe
Token: SeSystemtimePrivilege	2812	Csrss.exe
Token: SeProfSingleProcessPrivilege	2812	Csrss.exe
Token: SeIncBasePriorityPrivilege	2812	Csrss.exe
Token: SeCreatePagefilePrivilege	2812	Csrss.exe
Token: SeBackupPrivilege	2812	Csrss.exe
Token: SeRestorePrivilege	2812	Csrss.exe
Token: SeShutdownPrivilege	2812	Csrss.exe
Token: SeDebugPrivilege	2812	Csrss.exe
Token: SeSystemEnvironmentPrivilege	2812	Csrss.exe
Token: SeChangeNotifyPrivilege	2812	Csrss.exe
Token: SeRemoteShutdownPrivilege	2812	Csrss.exe
Token: SeUndockPrivilege	2812	Csrss.exe
Token: SeManageVolumePrivilege	2812	Csrss.exe
Token: SeImpersonatePrivilege	2812	Csrss.exe
Token: SeCreateGlobalPrivilege	2812	Csrss.exe
Token: 33	2812	Csrss.exe
Token: 34	2812	Csrss.exe
Token: 35	2812	Csrss.exe
Token: SeIncreaseQuotaPrivilege	2676	iexplore.exe
Token: SeSecurityPrivilege	2676	iexplore.exe
Token: SeTakeOwnershipPrivilege	2676	iexplore.exe
Token: SeLoadDriverPrivilege	2676	iexplore.exe
Token: SeSystemProfilePrivilege	2676	iexplore.exe
Token: SeSystemtimePrivilege	2676	iexplore.exe
Token: SeProfSingleProcessPrivilege	2676	iexplore.exe
Token: SeIncBasePriorityPrivilege	2676	iexplore.exe
Token: SeCreatePagefilePrivilege	2676	iexplore.exe
Token: SeBackupPrivilege	2676	iexplore.exe
Token: SeRestorePrivilege	2676	iexplore.exe
Token: SeShutdownPrivilege	2676	iexplore.exe
Token: SeDebugPrivilege	2676	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2676	iexplore.exe
Token: SeChangeNotifyPrivilege	2676	iexplore.exe
Token: SeRemoteShutdownPrivilege	2676	iexplore.exe
Token: SeUndockPrivilege	2676	iexplore.exe
Token: SeManageVolumePrivilege	2676	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2676	iexplore.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2812	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe	31
PID 1508 wrote to memory of 2812	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe	31
PID 1508 wrote to memory of 2812	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe	31
PID 1508 wrote to memory of 2812	1508	1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe	31
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2812 wrote to memory of 2676	2812	Csrss.exe	32
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33
PID 2676 wrote to memory of 2552	2676	iexplore.exe	33

C:\Users\Admin\AppData\Local\Temp\1853e7c8b1b062e5f38559ba957bd6ff_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1853e7c8b1b062e5f38559ba957bd6ff_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:1508
- C:\Windows\SysWOW64\Csrss\Csrss.exe
  "C:\Windows\system32\Csrss\Csrss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2552

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

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\Csrss\Csrss.exe

Filesize
756KB

MD5
1853e7c8b1b062e5f38559ba957bd6ff

SHA1
b5a07baa516c646ccb389eb4219feae21b118c6e

SHA256
a50b6193e2bdda6bf35018e9e05ff520181228be00f975d3d69282bf945bad93

SHA512
8d12c94210c6ca6079c14a071815343441d300595657c2e71146c62feea5f73b6d823a0630f2e16043c4c618b056072fed695c94f1f7694b5326ed567bd31d1b

Download Submit
memory/1508-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1508-53-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2552-14-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2552-52-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2676-12-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2812-13-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads