darkcomet | 53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4

General

Target

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Size

659KB
MD5

a7a5110423e033baaf3cf86ca69ab630
SHA1

40fcdc432ea715ee418761b83c409cd3c9942a6b
SHA256

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4
SHA512

59a32aa912fe3fa35a15980b542fc8fd2b327e11286a01f6285844fa4e1bab298e723fc9bc2d95832f8ab001d2b5a804b3ceef28b276774959c5d15b68061536
SSDEEP

12288:G9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/he:iZ1xuVVjfFoynPaVBUR8f+kN10EBM

Score

10^/10

darkcomet server discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

server

C2

sgdy.ddns.net:1122

Mutex

DC_MUTEX-309Q75Q

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
S89mQro8dxG3
install
true
offline_keylogger
true
password
December2oo2
persistence
true
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

Processes:

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
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

2420 attrib.exe
2252 attrib.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2008 msdcsc.exe

pid	process
2420	attrib.exe
2252	attrib.exe

pid	process
2008	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe

pid	process
1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

Processes:

msdcsc.exeattrib.exeattrib.exenotepad.exe53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.execmd.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeSecurityPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeTakeOwnershipPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeLoadDriverPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeSystemProfilePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeSystemtimePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeProfSingleProcessPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeIncBasePriorityPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeCreatePagefilePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeBackupPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeRestorePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeShutdownPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeDebugPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeSystemEnvironmentPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeChangeNotifyPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeRemoteShutdownPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeUndockPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeManageVolumePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeImpersonatePrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeCreateGlobalPrivilege	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: 33	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: 34	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: 35	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
Token: SeIncreaseQuotaPrivilege	2008	msdcsc.exe
Token: SeSecurityPrivilege	2008	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2008	msdcsc.exe
Token: SeLoadDriverPrivilege	2008	msdcsc.exe
Token: SeSystemProfilePrivilege	2008	msdcsc.exe
Token: SeSystemtimePrivilege	2008	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2008	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2008	msdcsc.exe
Token: SeCreatePagefilePrivilege	2008	msdcsc.exe
Token: SeBackupPrivilege	2008	msdcsc.exe
Token: SeRestorePrivilege	2008	msdcsc.exe
Token: SeShutdownPrivilege	2008	msdcsc.exe
Token: SeDebugPrivilege	2008	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2008	msdcsc.exe
Token: SeChangeNotifyPrivilege	2008	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2008	msdcsc.exe
Token: SeUndockPrivilege	2008	msdcsc.exe
Token: SeManageVolumePrivilege	2008	msdcsc.exe
Token: SeImpersonatePrivilege	2008	msdcsc.exe
Token: SeCreateGlobalPrivilege	2008	msdcsc.exe
Token: 33	2008	msdcsc.exe
Token: 34	2008	msdcsc.exe
Token: 35	2008	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2008 msdcsc.exe

pid	process
2008	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1584 wrote to memory of 1696	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1696	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1696	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1696	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1420	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1420	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1420	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 1420	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	cmd.exe
PID 1584 wrote to memory of 2008	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	msdcsc.exe
PID 1584 wrote to memory of 2008	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	msdcsc.exe
PID 1584 wrote to memory of 2008	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	msdcsc.exe
PID 1584 wrote to memory of 2008	1584	53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe	msdcsc.exe
PID 1420 wrote to memory of 2420	1420	cmd.exe	attrib.exe
PID 1420 wrote to memory of 2420	1420	cmd.exe	attrib.exe
PID 1420 wrote to memory of 2420	1420	cmd.exe	attrib.exe
PID 1420 wrote to memory of 2420	1420	cmd.exe	attrib.exe
PID 1696 wrote to memory of 2252	1696	cmd.exe	attrib.exe
PID 1696 wrote to memory of 2252	1696	cmd.exe	attrib.exe
PID 1696 wrote to memory of 2252	1696	cmd.exe	attrib.exe
PID 1696 wrote to memory of 2252	1696	cmd.exe	attrib.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe
PID 2008 wrote to memory of 2808	2008	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

2420 attrib.exe
2252 attrib.exe

pid	process
2420	attrib.exe
2252	attrib.exe

C:\Users\Admin\AppData\Local\Temp\53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe
"C:\Users\Admin\AppData\Local\Temp\53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1696
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4N.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1420
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2420
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2808

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
659KB

MD5
a7a5110423e033baaf3cf86ca69ab630

SHA1
40fcdc432ea715ee418761b83c409cd3c9942a6b

SHA256
53633b7a4243d0b9668ed02310ec0fe2841fc35b024770df0a0ff56e01c956e4

SHA512
59a32aa912fe3fa35a15980b542fc8fd2b327e11286a01f6285844fa4e1bab298e723fc9bc2d95832f8ab001d2b5a804b3ceef28b276774959c5d15b68061536

Download Submit
memory/1584-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1584-0-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2008-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-11-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2008-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2008-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2808-51-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/2808-13-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads