darkcomet | 63721711206a78dedb75769140e4464337c83a4c01ea7b5584c89c824a4b2923

Analysis

max time kernel
141s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
17-04-2024 12:48

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General

Target

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Size

658KB
MD5

3c41b88825ed5288001a0840f638bb15
SHA1

f12e5059fa029c6eea893ab2e6745922d0d89570
SHA256

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f
SHA512

bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h5:KZ1xuVVjfFoynPaVBUR8f+kN10EBT

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-6F4SERN

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
mKaVRbcLZnA8
install
true
offline_keylogger
true
persistence
true
reg_key
Google Handler

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:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

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"	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
2572	attrib.exe
2580	attrib.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
2524	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

pid	Process
1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

msdcsc.exeiexplore.exe3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Handler = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description	pid	Process	procid_target
PID 2524 set thread context of 2488	2524	msdcsc.exe	35

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid	Process
2488	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exemsdcsc.exeiexplore.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSecurityPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeTakeOwnershipPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeLoadDriverPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemProfilePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemtimePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeProfSingleProcessPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncBasePriorityPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreatePagefilePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeBackupPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRestorePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeShutdownPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeDebugPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeSystemEnvironmentPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeChangeNotifyPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeRemoteShutdownPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeUndockPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeManageVolumePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeImpersonatePrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeCreateGlobalPrivilege	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 33	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 34	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: 35	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
Token: SeIncreaseQuotaPrivilege	2524	msdcsc.exe
Token: SeSecurityPrivilege	2524	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2524	msdcsc.exe
Token: SeLoadDriverPrivilege	2524	msdcsc.exe
Token: SeSystemProfilePrivilege	2524	msdcsc.exe
Token: SeSystemtimePrivilege	2524	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2524	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2524	msdcsc.exe
Token: SeCreatePagefilePrivilege	2524	msdcsc.exe
Token: SeBackupPrivilege	2524	msdcsc.exe
Token: SeRestorePrivilege	2524	msdcsc.exe
Token: SeShutdownPrivilege	2524	msdcsc.exe
Token: SeDebugPrivilege	2524	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2524	msdcsc.exe
Token: SeChangeNotifyPrivilege	2524	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2524	msdcsc.exe
Token: SeUndockPrivilege	2524	msdcsc.exe
Token: SeManageVolumePrivilege	2524	msdcsc.exe
Token: SeImpersonatePrivilege	2524	msdcsc.exe
Token: SeCreateGlobalPrivilege	2524	msdcsc.exe
Token: 33	2524	msdcsc.exe
Token: 34	2524	msdcsc.exe
Token: 35	2524	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2488	iexplore.exe
Token: SeSecurityPrivilege	2488	iexplore.exe
Token: SeTakeOwnershipPrivilege	2488	iexplore.exe
Token: SeLoadDriverPrivilege	2488	iexplore.exe
Token: SeSystemProfilePrivilege	2488	iexplore.exe
Token: SeSystemtimePrivilege	2488	iexplore.exe
Token: SeProfSingleProcessPrivilege	2488	iexplore.exe
Token: SeIncBasePriorityPrivilege	2488	iexplore.exe
Token: SeCreatePagefilePrivilege	2488	iexplore.exe
Token: SeBackupPrivilege	2488	iexplore.exe
Token: SeRestorePrivilege	2488	iexplore.exe
Token: SeShutdownPrivilege	2488	iexplore.exe
Token: SeDebugPrivilege	2488	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2488	iexplore.exe
Token: SeChangeNotifyPrivilege	2488	iexplore.exe
Token: SeRemoteShutdownPrivilege	2488	iexplore.exe
Token: SeUndockPrivilege	2488	iexplore.exe
Token: SeManageVolumePrivilege	2488	iexplore.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	Process	procid_target
PID 1636 wrote to memory of 2916	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	28
PID 1636 wrote to memory of 2916	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	28
PID 1636 wrote to memory of 2916	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	28
PID 1636 wrote to memory of 2916	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	28
PID 1636 wrote to memory of 2464	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	29
PID 1636 wrote to memory of 2464	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	29
PID 1636 wrote to memory of 2464	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	29
PID 1636 wrote to memory of 2464	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	29
PID 2916 wrote to memory of 2572	2916	cmd.exe	33
PID 2916 wrote to memory of 2572	2916	cmd.exe	33
PID 2916 wrote to memory of 2572	2916	cmd.exe	33
PID 2916 wrote to memory of 2572	2916	cmd.exe	33
PID 2464 wrote to memory of 2580	2464	cmd.exe	32
PID 2464 wrote to memory of 2580	2464	cmd.exe	32
PID 2464 wrote to memory of 2580	2464	cmd.exe	32
PID 2464 wrote to memory of 2580	2464	cmd.exe	32
PID 1636 wrote to memory of 2524	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	34
PID 1636 wrote to memory of 2524	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	34
PID 1636 wrote to memory of 2524	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	34
PID 1636 wrote to memory of 2524	1636	3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe	34
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2524 wrote to memory of 2488	2524	msdcsc.exe	35
PID 2488 wrote to memory of 2412	2488	iexplore.exe	36
PID 2488 wrote to memory of 2412	2488	iexplore.exe	36
PID 2488 wrote to memory of 2412	2488	iexplore.exe	36
PID 2488 wrote to memory of 2412	2488	iexplore.exe	36
PID 2488 wrote to memory of 2412	2488	iexplore.exe	36

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
2572	attrib.exe
2580	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe
"C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2464
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2580
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2488
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:2412

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
3c41b88825ed5288001a0840f638bb15

SHA1
f12e5059fa029c6eea893ab2e6745922d0d89570

SHA256
3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

SHA512
bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

Download Submit
memory/1636-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1636-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2412-15-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2488-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2524-12-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2524-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download