darkcomet | 66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

Resubmissions

05/02/2025, 07:20

250205-h6kd5awmay 10

01/10/2022, 23:38

221001-3mysmacbc5 10

Analysis

max time kernel
175s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 23:38

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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 evasion 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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

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 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

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

evasion

Modify Registry

T1112

Modify Existing Service

T1031

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

Disabling Security Tools

T1089

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
1816	msdcsc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5040-132-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0008000000022e0f-134.dat	upx
behavioral2/files/0x0008000000022e0f-135.dat	upx
behavioral2/memory/1816-136-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/5040-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1816-138-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

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

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

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

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\	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSecurityPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeTakeOwnershipPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeLoadDriverPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemProfilePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemtimePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeProfSingleProcessPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncBasePriorityPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreatePagefilePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeBackupPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRestorePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeShutdownPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeDebugPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemEnvironmentPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeChangeNotifyPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRemoteShutdownPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeUndockPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeManageVolumePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeImpersonatePrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreateGlobalPrivilege	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 33	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 34	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 35	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 36	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncreaseQuotaPrivilege	1816	msdcsc.exe
Token: SeSecurityPrivilege	1816	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1816	msdcsc.exe
Token: SeLoadDriverPrivilege	1816	msdcsc.exe
Token: SeSystemProfilePrivilege	1816	msdcsc.exe
Token: SeSystemtimePrivilege	1816	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1816	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1816	msdcsc.exe
Token: SeCreatePagefilePrivilege	1816	msdcsc.exe
Token: SeBackupPrivilege	1816	msdcsc.exe
Token: SeRestorePrivilege	1816	msdcsc.exe
Token: SeShutdownPrivilege	1816	msdcsc.exe
Token: SeDebugPrivilege	1816	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1816	msdcsc.exe
Token: SeChangeNotifyPrivilege	1816	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1816	msdcsc.exe
Token: SeUndockPrivilege	1816	msdcsc.exe
Token: SeManageVolumePrivilege	1816	msdcsc.exe
Token: SeImpersonatePrivilege	1816	msdcsc.exe
Token: SeCreateGlobalPrivilege	1816	msdcsc.exe
Token: 33	1816	msdcsc.exe
Token: 34	1816	msdcsc.exe
Token: 35	1816	msdcsc.exe
Token: 36	1816	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1816	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 1816	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	81
PID 5040 wrote to memory of 1816	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	81
PID 5040 wrote to memory of 1816	5040	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	81

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

C:\Users\Admin\AppData\Local\Temp\66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
"C:\Users\Admin\AppData\Local\Temp\66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.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:5040
- 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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:1816

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

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
6cae60795b0fc4e9f61e9ebb1e816fc0

SHA1
8d8fc584ff9a299fac713ad4c15d9b4b067ea48f

SHA256
66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

SHA512
70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
252KB

MD5
6cae60795b0fc4e9f61e9ebb1e816fc0

SHA1
8d8fc584ff9a299fac713ad4c15d9b4b067ea48f

SHA256
66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

SHA512
70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537

Download Submit
memory/1816-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1816-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5040-132-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5040-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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