darkcomet | b462c2e4b8d3543d444178ffcebdadbecf3c0d196ae256520ea8fcacb46c1190

Analysis

max time kernel
157s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 12:41

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General

Target

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Size

663KB
MD5

8231d8d9d1c38a7f2ebce20944bcfc63
SHA1

ca190e6cab231bd140dab3a13c7a59cb88c85e7b
SHA256

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8
SHA512

8025a7c2231a562bf4d0ff76a813585606462a51a1b76a34d54f0640b4f591d8abdc32928795162f987f6dfd42f16e10c340f27a62ad87b18cec81bdb9a68cc2
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/:KZ1xuVVjfFoynPaVBUR8f+kN10Ed

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

80.222.152.67:80

Mutex

DC_MUTEX-QWMWN2U

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
hdQRh37piHv1
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.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"	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.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
2336	attrib.exe
4568	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
5072	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeSecurityPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeTakeOwnershipPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeLoadDriverPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeSystemProfilePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeSystemtimePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeProfSingleProcessPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeIncBasePriorityPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeCreatePagefilePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeBackupPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeRestorePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeShutdownPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeDebugPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeSystemEnvironmentPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeChangeNotifyPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeRemoteShutdownPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeUndockPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeManageVolumePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeImpersonatePrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeCreateGlobalPrivilege	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: 33	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: 34	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: 35	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: 36	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
Token: SeIncreaseQuotaPrivilege	5072	msdcsc.exe
Token: SeSecurityPrivilege	5072	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5072	msdcsc.exe
Token: SeLoadDriverPrivilege	5072	msdcsc.exe
Token: SeSystemProfilePrivilege	5072	msdcsc.exe
Token: SeSystemtimePrivilege	5072	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5072	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5072	msdcsc.exe
Token: SeCreatePagefilePrivilege	5072	msdcsc.exe
Token: SeBackupPrivilege	5072	msdcsc.exe
Token: SeRestorePrivilege	5072	msdcsc.exe
Token: SeShutdownPrivilege	5072	msdcsc.exe
Token: SeDebugPrivilege	5072	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5072	msdcsc.exe
Token: SeChangeNotifyPrivilege	5072	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5072	msdcsc.exe
Token: SeUndockPrivilege	5072	msdcsc.exe
Token: SeManageVolumePrivilege	5072	msdcsc.exe
Token: SeImpersonatePrivilege	5072	msdcsc.exe
Token: SeCreateGlobalPrivilege	5072	msdcsc.exe
Token: 33	5072	msdcsc.exe
Token: 34	5072	msdcsc.exe
Token: 35	5072	msdcsc.exe
Token: 36	5072	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
5072	msdcsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.execmd.execmd.exe

description	pid	Process	procid_target
PID 4088 wrote to memory of 3444	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	97
PID 4088 wrote to memory of 3444	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	97
PID 4088 wrote to memory of 3444	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	97
PID 4088 wrote to memory of 3452	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	98
PID 4088 wrote to memory of 3452	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	98
PID 4088 wrote to memory of 3452	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	98
PID 4088 wrote to memory of 5072	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	101
PID 4088 wrote to memory of 5072	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	101
PID 4088 wrote to memory of 5072	4088	77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe	101
PID 3444 wrote to memory of 2336	3444	cmd.exe	102
PID 3444 wrote to memory of 2336	3444	cmd.exe	102
PID 3444 wrote to memory of 2336	3444	cmd.exe	102
PID 3452 wrote to memory of 4568	3452	cmd.exe	103
PID 3452 wrote to memory of 4568	3452	cmd.exe	103
PID 3452 wrote to memory of 4568	3452	cmd.exe	103

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
2336	attrib.exe
4568	attrib.exe

C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe
"C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3444
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2336
- 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:3452
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4568
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5072

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
663KB

MD5
8231d8d9d1c38a7f2ebce20944bcfc63

SHA1
ca190e6cab231bd140dab3a13c7a59cb88c85e7b

SHA256
77058147d37749df7378249a128a5298de49787eba629b634090849456774ce8

SHA512
8025a7c2231a562bf4d0ff76a813585606462a51a1b76a34d54f0640b4f591d8abdc32928795162f987f6dfd42f16e10c340f27a62ad87b18cec81bdb9a68cc2

Download Submit
memory/4088-0-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4088-1-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/4088-3-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4088-16-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/5072-15-0x0000000002190000-0x0000000002191000-memory.dmp

Filesize
4KB

Download
memory/5072-17-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/5072-19-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download