darkcomet | 0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f

Analysis

max time kernel
145s
max time network
153s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
02/10/2022, 15:17

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General

Target

0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Size

658KB
MD5

41c97d1bac6fe5b92dfc8531c71a8920
SHA1

ab23bf913a449d8275fc176a89d1751fc7683e0e
SHA256

0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f
SHA512

18cea33da291132745cdeed9def70709b1c42c187cd4d1ca2d0be9f4706741b9e0b94e5016cbe9ada2fd8aa3e56b6d3c4cb4d5a8fb985c39759c1472f4664e33
SSDEEP

12288:S9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFV:+iBIGkbxqEcjsWiDxguehC2Su

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

shanxai.no-ip.biz:1604

5.250.133.148:1604

Mutex

DC_MUTEX-8X742L9

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
VD22vU8Tcg5o
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\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.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
2000	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.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	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeSecurityPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeTakeOwnershipPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeLoadDriverPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeSystemProfilePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeSystemtimePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeProfSingleProcessPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeIncBasePriorityPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeCreatePagefilePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeBackupPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeRestorePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeShutdownPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeDebugPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeSystemEnvironmentPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeChangeNotifyPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeRemoteShutdownPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeUndockPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeManageVolumePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeImpersonatePrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeCreateGlobalPrivilege	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: 33	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: 34	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: 35	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
Token: SeIncreaseQuotaPrivilege	2000	msdcsc.exe
Token: SeSecurityPrivilege	2000	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2000	msdcsc.exe
Token: SeLoadDriverPrivilege	2000	msdcsc.exe
Token: SeSystemProfilePrivilege	2000	msdcsc.exe
Token: SeSystemtimePrivilege	2000	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2000	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2000	msdcsc.exe
Token: SeCreatePagefilePrivilege	2000	msdcsc.exe
Token: SeBackupPrivilege	2000	msdcsc.exe
Token: SeRestorePrivilege	2000	msdcsc.exe
Token: SeShutdownPrivilege	2000	msdcsc.exe
Token: SeDebugPrivilege	2000	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2000	msdcsc.exe
Token: SeChangeNotifyPrivilege	2000	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2000	msdcsc.exe
Token: SeUndockPrivilege	2000	msdcsc.exe
Token: SeManageVolumePrivilege	2000	msdcsc.exe
Token: SeImpersonatePrivilege	2000	msdcsc.exe
Token: SeCreateGlobalPrivilege	2000	msdcsc.exe
Token: 33	2000	msdcsc.exe
Token: 34	2000	msdcsc.exe
Token: 35	2000	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2000	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2000	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe	27
PID 2012 wrote to memory of 2000	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe	27
PID 2012 wrote to memory of 2000	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe	27
PID 2012 wrote to memory of 2000	2012	0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe	27

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\0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe
"C:\Users\Admin\AppData\Local\Temp\0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Roaming\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:2000

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

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Downloads

C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
41c97d1bac6fe5b92dfc8531c71a8920

SHA1
ab23bf913a449d8275fc176a89d1751fc7683e0e

SHA256
0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f

SHA512
18cea33da291132745cdeed9def70709b1c42c187cd4d1ca2d0be9f4706741b9e0b94e5016cbe9ada2fd8aa3e56b6d3c4cb4d5a8fb985c39759c1472f4664e33

Download Submit
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
41c97d1bac6fe5b92dfc8531c71a8920

SHA1
ab23bf913a449d8275fc176a89d1751fc7683e0e

SHA256
0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f

SHA512
18cea33da291132745cdeed9def70709b1c42c187cd4d1ca2d0be9f4706741b9e0b94e5016cbe9ada2fd8aa3e56b6d3c4cb4d5a8fb985c39759c1472f4664e33

Download Submit
\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
41c97d1bac6fe5b92dfc8531c71a8920

SHA1
ab23bf913a449d8275fc176a89d1751fc7683e0e

SHA256
0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f

SHA512
18cea33da291132745cdeed9def70709b1c42c187cd4d1ca2d0be9f4706741b9e0b94e5016cbe9ada2fd8aa3e56b6d3c4cb4d5a8fb985c39759c1472f4664e33

Download Submit
\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
41c97d1bac6fe5b92dfc8531c71a8920

SHA1
ab23bf913a449d8275fc176a89d1751fc7683e0e

SHA256
0bc4dff8709c03d3249dffd1d5ef920ef9dda3ba0f6d2082a9a4ef852526671f

SHA512
18cea33da291132745cdeed9def70709b1c42c187cd4d1ca2d0be9f4706741b9e0b94e5016cbe9ada2fd8aa3e56b6d3c4cb4d5a8fb985c39759c1472f4664e33

Download Submit
memory/2012-54-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads