darkcomet | e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 09:35

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General

Target

e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Size

252KB
MD5

0fa267d2d604169d3abee4c73aa40b3d
SHA1

8aa8ac449c230c0a95748ee0a9fdbe523fae5c02
SHA256

e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985
SHA512

31bb94c1874baa86b6f3801bdf9077a52dd56e9ed4b9f1b74bac74ad8c52ae4915f4611fb17686e281f610791c73dec285b84c81f1a1bb935a7c21332ba07bd2
SSDEEP

6144:TcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQK3:TcWkbgTYWnYnt/IDYhPn

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:889

Mutex

DC_MUTEX-L2AZZ2B

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
o5X0ZUXE5GPx
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

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"	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\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

pid	Process
3432	attrib.exe
1404	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

Executes dropped EXE 1 IoCs

pid	Process
3256	msdcsc.exe

UPX packed file 14 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3080-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x00080000000233f4-7.dat	upx
behavioral2/memory/3080-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3256-80-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3256	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSecurityPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeTakeOwnershipPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeLoadDriverPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemProfilePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemtimePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeProfSingleProcessPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeIncBasePriorityPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeCreatePagefilePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeBackupPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeRestorePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeShutdownPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeDebugPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemEnvironmentPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeChangeNotifyPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeRemoteShutdownPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeUndockPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeManageVolumePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeImpersonatePrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeCreateGlobalPrivilege	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 33	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 34	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 35	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 36	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeIncreaseQuotaPrivilege	3256	msdcsc.exe
Token: SeSecurityPrivilege	3256	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3256	msdcsc.exe
Token: SeLoadDriverPrivilege	3256	msdcsc.exe
Token: SeSystemProfilePrivilege	3256	msdcsc.exe
Token: SeSystemtimePrivilege	3256	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3256	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3256	msdcsc.exe
Token: SeCreatePagefilePrivilege	3256	msdcsc.exe
Token: SeBackupPrivilege	3256	msdcsc.exe
Token: SeRestorePrivilege	3256	msdcsc.exe
Token: SeShutdownPrivilege	3256	msdcsc.exe
Token: SeDebugPrivilege	3256	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3256	msdcsc.exe
Token: SeChangeNotifyPrivilege	3256	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3256	msdcsc.exe
Token: SeUndockPrivilege	3256	msdcsc.exe
Token: SeManageVolumePrivilege	3256	msdcsc.exe
Token: SeImpersonatePrivilege	3256	msdcsc.exe
Token: SeCreateGlobalPrivilege	3256	msdcsc.exe
Token: 33	3256	msdcsc.exe
Token: 34	3256	msdcsc.exe
Token: 35	3256	msdcsc.exe
Token: 36	3256	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3256	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 3588	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	82
PID 3080 wrote to memory of 3588	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	82
PID 3080 wrote to memory of 3588	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	82
PID 3080 wrote to memory of 1148	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	83
PID 3080 wrote to memory of 1148	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	83
PID 3080 wrote to memory of 1148	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	83
PID 3588 wrote to memory of 3432	3588	cmd.exe	86
PID 3588 wrote to memory of 3432	3588	cmd.exe	86
PID 3588 wrote to memory of 3432	3588	cmd.exe	86
PID 1148 wrote to memory of 1404	1148	cmd.exe	87
PID 1148 wrote to memory of 1404	1148	cmd.exe	87
PID 1148 wrote to memory of 1404	1148	cmd.exe	87
PID 3080 wrote to memory of 3256	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	88
PID 3080 wrote to memory of 3256	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	88
PID 3080 wrote to memory of 3256	3080	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	88
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89
PID 3256 wrote to memory of 3780	3256	msdcsc.exe	89

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3432	attrib.exe
1404	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
"C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3588
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:3432
- 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:1148
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1404
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3256
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:3780

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

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\Documents\MSDCSC\msdcsc.exe

Filesize
252KB

MD5
0fa267d2d604169d3abee4c73aa40b3d

SHA1
8aa8ac449c230c0a95748ee0a9fdbe523fae5c02

SHA256
e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985

SHA512
31bb94c1874baa86b6f3801bdf9077a52dd56e9ed4b9f1b74bac74ad8c52ae4915f4611fb17686e281f610791c73dec285b84c81f1a1bb935a7c21332ba07bd2

Download Submit
memory/3080-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3080-1-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/3080-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-62-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/3256-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3256-80-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3780-63-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads