darkcomet | 66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

Resubmissions

05/02/2025, 07:20

250205-h6kd5awmay 10

01/10/2022, 23:38

221001-3mysmacbc5 10

Analysis

max time kernel
148s
max time network
158s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/10/2022, 23:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
1596	msdcsc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1948-55-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/files/0x000b000000012346-56.dat	upx
behavioral1/files/0x000b000000012346-57.dat	upx
behavioral1/files/0x000b000000012346-59.dat	upx
behavioral1/files/0x000b000000012346-61.dat	upx
behavioral1/memory/1596-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
1948	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-1-5-21-3845472200-3839195424-595303356-1000\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

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSecurityPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeTakeOwnershipPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeLoadDriverPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemProfilePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemtimePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeProfSingleProcessPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncBasePriorityPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreatePagefilePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeBackupPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRestorePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeShutdownPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeDebugPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeSystemEnvironmentPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeChangeNotifyPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeRemoteShutdownPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeUndockPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeManageVolumePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeImpersonatePrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeCreateGlobalPrivilege	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 33	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 34	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: 35	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe
Token: SeIncreaseQuotaPrivilege	1596	msdcsc.exe
Token: SeSecurityPrivilege	1596	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1596	msdcsc.exe
Token: SeLoadDriverPrivilege	1596	msdcsc.exe
Token: SeSystemProfilePrivilege	1596	msdcsc.exe
Token: SeSystemtimePrivilege	1596	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1596	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1596	msdcsc.exe
Token: SeCreatePagefilePrivilege	1596	msdcsc.exe
Token: SeBackupPrivilege	1596	msdcsc.exe
Token: SeRestorePrivilege	1596	msdcsc.exe
Token: SeShutdownPrivilege	1596	msdcsc.exe
Token: SeDebugPrivilege	1596	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1596	msdcsc.exe
Token: SeChangeNotifyPrivilege	1596	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1596	msdcsc.exe
Token: SeUndockPrivilege	1596	msdcsc.exe
Token: SeManageVolumePrivilege	1596	msdcsc.exe
Token: SeImpersonatePrivilege	1596	msdcsc.exe
Token: SeCreateGlobalPrivilege	1596	msdcsc.exe
Token: 33	1596	msdcsc.exe
Token: 34	1596	msdcsc.exe
Token: 35	1596	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1596	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 1596	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	28
PID 1948 wrote to memory of 1596	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	28
PID 1948 wrote to memory of 1596	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	28
PID 1948 wrote to memory of 1596	1948	66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4.exe	28

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
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- 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:1596

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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

Filesize
252KB

MD5
6cae60795b0fc4e9f61e9ebb1e816fc0

SHA1
8d8fc584ff9a299fac713ad4c15d9b4b067ea48f

SHA256
66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

SHA512
70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537

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

Filesize
252KB

MD5
6cae60795b0fc4e9f61e9ebb1e816fc0

SHA1
8d8fc584ff9a299fac713ad4c15d9b4b067ea48f

SHA256
66db285985f556e7e42d089e9eda4bca7cf71530079f9ae1ef9817ea84d21bc4

SHA512
70129a0491ca9af017fe703f5a2ef42af7e1384f84298bd5fd43c0f8db80e7c754d7bbdb7e62112fe07c702bbdce2502e933dcf1c21410e058bb27ae069ef537

Download Submit
memory/1596-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1948-54-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download
memory/1948-55-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1948-62-0x0000000003940000-0x00000000039F7000-memory.dmp

Filesize
732KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads