darkcomet | 66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

Resubmissions

05/02/2025, 07:20

250205-h6kd5awmay 10

01/10/2022, 23:38

221001-3mysmacbc5 10

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05/02/2025, 07:20

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General

Target

66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Size

252KB
MD5

6cae60795b0fc4e9f61e9ebb1e816fc0
SHA1

8d8fc584ff9a299fac713ad4c15d9b4b067ea48f
SHA256

66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4
SHA512

70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537
SSDEEP

6144:ncNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQ/9:ncWkbgTYWnYnt/IDYhPM

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

190.140.32.95:1604

Mutex

DC_MUTEX-SBEVJX1

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
l333XCQCQ04W
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

Modifies firewall policy service 3 TTPs 3 IoCs

defense_evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Modifies security service 2 TTPs 1 IoCs

defense_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

defense_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

Executes dropped EXE 1 IoCs

pid	Process
1692	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

Windows security modification 2 TTPs 2 IoCs

defense_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

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3032-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/files/0x000800000001660b-6.dat	upx
behavioral1/memory/1692-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3032-16-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1692-17-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1692-19-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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 2 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	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSecurityPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeTakeOwnershipPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeLoadDriverPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemProfilePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemtimePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeProfSingleProcessPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncBasePriorityPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreatePagefilePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeBackupPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRestorePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeShutdownPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeDebugPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemEnvironmentPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeChangeNotifyPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRemoteShutdownPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeUndockPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeManageVolumePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeImpersonatePrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreateGlobalPrivilege	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 33	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 34	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 35	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncreaseQuotaPrivilege	1692	msdcsc.exe
Token: SeSecurityPrivilege	1692	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1692	msdcsc.exe
Token: SeLoadDriverPrivilege	1692	msdcsc.exe
Token: SeSystemProfilePrivilege	1692	msdcsc.exe
Token: SeSystemtimePrivilege	1692	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1692	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1692	msdcsc.exe
Token: SeCreatePagefilePrivilege	1692	msdcsc.exe
Token: SeBackupPrivilege	1692	msdcsc.exe
Token: SeRestorePrivilege	1692	msdcsc.exe
Token: SeShutdownPrivilege	1692	msdcsc.exe
Token: SeDebugPrivilege	1692	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1692	msdcsc.exe
Token: SeChangeNotifyPrivilege	1692	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1692	msdcsc.exe
Token: SeUndockPrivilege	1692	msdcsc.exe
Token: SeManageVolumePrivilege	1692	msdcsc.exe
Token: SeImpersonatePrivilege	1692	msdcsc.exe
Token: SeCreateGlobalPrivilege	1692	msdcsc.exe
Token: 33	1692	msdcsc.exe
Token: 34	1692	msdcsc.exe
Token: 35	1692	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1692	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 1692	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	31
PID 3032 wrote to memory of 1692	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	31
PID 3032 wrote to memory of 1692	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	31
PID 3032 wrote to memory of 1692	3032	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	31

System policy modification 1 TTPs 3 IoCs

defense_evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
C:\Users\Admin\AppData\Local\Temp\66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe dsrm -subtree -noprompt -c user"http://+:443"
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:3032
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:1692

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

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

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

Filesize
252KB

MD5
6cae60795b0fc4e9f61e9ebb1e816fc0

SHA1
8d8fc584ff9a299fac713ad4c15d9b4b067ea48f

SHA256
66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

SHA512
70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537

Download Submit
memory/1692-14-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1692-17-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1692-19-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3032-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3032-1-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3032-12-0x0000000003B90000-0x0000000003C47000-memory.dmp

Filesize
732KB

Download
memory/3032-16-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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