darkcomet | 35b1fc1278b92658c6e6af725253aaf7a060f69fdc58e3a2a696ca9fbc799c81

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 09:52

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General

Target

JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
Size

2.5MB
MD5

03b794dd5a1f48698efaba82986e0c24
SHA1

8abe8064f81f8bcd7d04b19dc59bb98333908ce6
SHA256

35b1fc1278b92658c6e6af725253aaf7a060f69fdc58e3a2a696ca9fbc799c81
SHA512

36e6956e5a5b92af08658c1770f3da017b63bc630e5533016d67d09abd7870a01033b12d2aa31b0b727ba1e268fe80bf1f35f9152cf2bd058628e379a37cffd7
SSDEEP

49152:S/SJ5InRTIKCzHuLLiNUlNeHmFpAh+CJdZbSoIfKN5lH9aDHD89t:sSJXZHmOmokpEvJpoI7H9aDj8

Score

10^/10

darkcomet guest16 bootkit discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

cucu.no-ip.org:1500

Mutex

DC_MUTEX-23UB63C

Attributes

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

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	trojan.exe

Executes dropped EXE 5 IoCs

pid	Process
2404	trojan.exe
2808	LBoF6.exe
2880	msdcsc.exe
2648	LBoF6.exe
572	LBoF6.exe

Loads dropped DLL 8 IoCs

pid	Process
1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
2404	trojan.exe
2404	trojan.exe
2808	LBoF6.exe
2648	LBoF6.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	trojan.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
File opened for modification	\??\PhysicalDrive0	LBoF6.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2808 set thread context of 2648	2808	LBoF6.exe	35
PID 2648 set thread context of 572	2648	LBoF6.exe	36

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 7 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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LBoF6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LBoF6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LBoF6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	trojan.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2404	trojan.exe
Token: SeSecurityPrivilege	2404	trojan.exe
Token: SeTakeOwnershipPrivilege	2404	trojan.exe
Token: SeLoadDriverPrivilege	2404	trojan.exe
Token: SeSystemProfilePrivilege	2404	trojan.exe
Token: SeSystemtimePrivilege	2404	trojan.exe
Token: SeProfSingleProcessPrivilege	2404	trojan.exe
Token: SeIncBasePriorityPrivilege	2404	trojan.exe
Token: SeCreatePagefilePrivilege	2404	trojan.exe
Token: SeBackupPrivilege	2404	trojan.exe
Token: SeRestorePrivilege	2404	trojan.exe
Token: SeShutdownPrivilege	2404	trojan.exe
Token: SeDebugPrivilege	2404	trojan.exe
Token: SeSystemEnvironmentPrivilege	2404	trojan.exe
Token: SeChangeNotifyPrivilege	2404	trojan.exe
Token: SeRemoteShutdownPrivilege	2404	trojan.exe
Token: SeUndockPrivilege	2404	trojan.exe
Token: SeManageVolumePrivilege	2404	trojan.exe
Token: SeImpersonatePrivilege	2404	trojan.exe
Token: SeCreateGlobalPrivilege	2404	trojan.exe
Token: 33	2404	trojan.exe
Token: 34	2404	trojan.exe
Token: 35	2404	trojan.exe
Token: SeIncreaseQuotaPrivilege	2880	msdcsc.exe
Token: SeSecurityPrivilege	2880	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2880	msdcsc.exe
Token: SeLoadDriverPrivilege	2880	msdcsc.exe
Token: SeSystemProfilePrivilege	2880	msdcsc.exe
Token: SeSystemtimePrivilege	2880	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2880	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2880	msdcsc.exe
Token: SeCreatePagefilePrivilege	2880	msdcsc.exe
Token: SeBackupPrivilege	2880	msdcsc.exe
Token: SeRestorePrivilege	2880	msdcsc.exe
Token: SeShutdownPrivilege	2880	msdcsc.exe
Token: SeDebugPrivilege	2880	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2880	msdcsc.exe
Token: SeChangeNotifyPrivilege	2880	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2880	msdcsc.exe
Token: SeUndockPrivilege	2880	msdcsc.exe
Token: SeManageVolumePrivilege	2880	msdcsc.exe
Token: SeImpersonatePrivilege	2880	msdcsc.exe
Token: SeCreateGlobalPrivilege	2880	msdcsc.exe
Token: 33	2880	msdcsc.exe
Token: 34	2880	msdcsc.exe
Token: 35	2880	msdcsc.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
2808	LBoF6.exe
2880	msdcsc.exe
2648	LBoF6.exe
572	LBoF6.exe
572	LBoF6.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 2436 wrote to memory of 1964	2436	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	31
PID 1964 wrote to memory of 2404	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	32
PID 1964 wrote to memory of 2404	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	32
PID 1964 wrote to memory of 2404	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	32
PID 1964 wrote to memory of 2404	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	32
PID 1964 wrote to memory of 2808	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	33
PID 1964 wrote to memory of 2808	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	33
PID 1964 wrote to memory of 2808	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	33
PID 1964 wrote to memory of 2808	1964	JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe	33
PID 2404 wrote to memory of 2880	2404	trojan.exe	34
PID 2404 wrote to memory of 2880	2404	trojan.exe	34
PID 2404 wrote to memory of 2880	2404	trojan.exe	34
PID 2404 wrote to memory of 2880	2404	trojan.exe	34
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2808 wrote to memory of 2648	2808	LBoF6.exe	35
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36
PID 2648 wrote to memory of 572	2648	LBoF6.exe	36

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_03b794dd5a1f48698efaba82986e0c24.exe"
  2⤵
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Users\Admin\AppData\Local\Temp\trojan.exe
    "C:\Users\Admin\AppData\Local\Temp\trojan.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2404
  - - C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
      "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2880
- - C:\Users\Admin\AppData\Local\Temp\LBoF6.exe
    "C:\Users\Admin\AppData\Local\Temp\LBoF6.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2808
  - - C:\Users\Admin\AppData\Local\Temp\LBoF6.exe
      "C:\Users\Admin\AppData\Local\Temp\LBoF6.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Writes to the Master Boot Record (MBR)
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2648
    - - C:\Users\Admin\AppData\Local\Temp\LBoF6.exe
        
        "C:\Users\Admin\AppData\Local\Temp\LBoF6.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:572

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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

C:\Users\Admin\AppData\Local\Temp\LBoF6.exe

Filesize
1.3MB

MD5
337d4b79a668a7cdf6f9535476222062

SHA1
2cc60501c6541dcfd0ffd9d6c6f7915964baac1a

SHA256
a8a902657a802233269065ec6f3561a1c609567e2aa5c22ad4d18a38e1bef101

SHA512
305cb6956e960eab0f25f94deb3c7dbdd3fc60af3b4be070d9441ae7c229d50b5117c53abdf85fe2713a9e8875c32a81c36234ab72724e74025bd6646572be39

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

Filesize
660KB

MD5
bdf4c532e7a22cbe0fe391ff3928b9f2

SHA1
f965ae04198d63dfd72dd519f9d5273ef268adbb

SHA256
97bbfbaba5b573d5f55658883e93e4bca98619a85898a937103b8d0cd012bd8e

SHA512
04a031ab74f6ee636288780fd5cfa704d4afb7ac0a1f9dc0543db6fec2fdb9aa93552aea8306aca2562e4238d522da745a140f9177c6229c6724ac5c5a32c71b

Download Submit
memory/572-86-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/572-78-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/572-71-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/572-69-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/572-73-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/1964-35-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/1964-6-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/1964-4-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/1964-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1964-14-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/1964-12-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/1964-2-0x0000000000400000-0x0000000000607000-memory.dmp

Filesize
2.0MB

Download
memory/2404-43-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2648-56-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2648-54-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2648-58-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2648-80-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2648-63-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2648-65-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/2880-91-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-95-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-93-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-89-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-96-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-97-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-98-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-99-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-100-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2880-101-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads