darkcomet | 668b49adbd859ede384b13bfa1082ad5254df49d8841e39fcff375bf15e057ca

General

Target

b02479bd2f3ff635c7379a62ca54e502.exe
Size

658KB
MD5

b02479bd2f3ff635c7379a62ca54e502
SHA1

ab25e517492161e240093753a9fb41d8cca6aa98
SHA256

668b49adbd859ede384b13bfa1082ad5254df49d8841e39fcff375bf15e057ca
SHA512

6b767502a250ee86dbece2ea14dce930ead6b0fadf97431fbb8363bc046ef5528444f875ce9a18fde72c8a2d88271a095d559b43bd1301b397fa0f303641a312

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

95.31.38.1:1604

lololoshka228.ddns.net:1604

Mutex

DC_MUTEX-QBCS1A4

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
NNCa8eHTowkP
install
true
offline_keylogger
true
persistence
true
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

Processes:

b02479bd2f3ff635c7379a62ca54e502.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	b02479bd2f3ff635c7379a62ca54e502.exe

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exemsdcsc.exe

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

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exeiexplore.exe

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

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3164 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
3164	msdcsc.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

Processes:

b02479bd2f3ff635c7379a62ca54e502.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation	b02479bd2f3ff635c7379a62ca54e502.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

msdcsc.exe

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 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

b02479bd2f3ff635c7379a62ca54e502.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	b02479bd2f3ff635c7379a62ca54e502.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 3164 set thread context of 1016 3164 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3164 set thread context of 1016	3164	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

b02479bd2f3ff635c7379a62ca54e502.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	b02479bd2f3ff635c7379a62ca54e502.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

1016 iexplore.exe

pid	process
1016	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

b02479bd2f3ff635c7379a62ca54e502.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeSecurityPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeTakeOwnershipPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeLoadDriverPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeSystemProfilePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeSystemtimePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeProfSingleProcessPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeIncBasePriorityPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeCreatePagefilePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeBackupPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeRestorePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeShutdownPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeDebugPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeSystemEnvironmentPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeChangeNotifyPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeRemoteShutdownPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeUndockPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeManageVolumePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeImpersonatePrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeCreateGlobalPrivilege	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: 33	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: 34	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: 35	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: 36	8	b02479bd2f3ff635c7379a62ca54e502.exe
Token: SeIncreaseQuotaPrivilege	3164	msdcsc.exe
Token: SeSecurityPrivilege	3164	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3164	msdcsc.exe
Token: SeLoadDriverPrivilege	3164	msdcsc.exe
Token: SeSystemProfilePrivilege	3164	msdcsc.exe
Token: SeSystemtimePrivilege	3164	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3164	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3164	msdcsc.exe
Token: SeCreatePagefilePrivilege	3164	msdcsc.exe
Token: SeBackupPrivilege	3164	msdcsc.exe
Token: SeRestorePrivilege	3164	msdcsc.exe
Token: SeShutdownPrivilege	3164	msdcsc.exe
Token: SeDebugPrivilege	3164	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3164	msdcsc.exe
Token: SeChangeNotifyPrivilege	3164	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3164	msdcsc.exe
Token: SeUndockPrivilege	3164	msdcsc.exe
Token: SeManageVolumePrivilege	3164	msdcsc.exe
Token: SeImpersonatePrivilege	3164	msdcsc.exe
Token: SeCreateGlobalPrivilege	3164	msdcsc.exe
Token: 33	3164	msdcsc.exe
Token: 34	3164	msdcsc.exe
Token: 35	3164	msdcsc.exe
Token: 36	3164	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1016	iexplore.exe
Token: SeSecurityPrivilege	1016	iexplore.exe
Token: SeTakeOwnershipPrivilege	1016	iexplore.exe
Token: SeLoadDriverPrivilege	1016	iexplore.exe
Token: SeSystemProfilePrivilege	1016	iexplore.exe
Token: SeSystemtimePrivilege	1016	iexplore.exe
Token: SeProfSingleProcessPrivilege	1016	iexplore.exe
Token: SeIncBasePriorityPrivilege	1016	iexplore.exe
Token: SeCreatePagefilePrivilege	1016	iexplore.exe
Token: SeBackupPrivilege	1016	iexplore.exe
Token: SeRestorePrivilege	1016	iexplore.exe
Token: SeShutdownPrivilege	1016	iexplore.exe
Token: SeDebugPrivilege	1016	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1016	iexplore.exe
Token: SeChangeNotifyPrivilege	1016	iexplore.exe
Token: SeRemoteShutdownPrivilege	1016	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1016 iexplore.exe

pid	process
1016	iexplore.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

b02479bd2f3ff635c7379a62ca54e502.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 8 wrote to memory of 3240	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 8 wrote to memory of 3240	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 8 wrote to memory of 3240	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 8 wrote to memory of 3736	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 8 wrote to memory of 3736	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 8 wrote to memory of 3736	8	b02479bd2f3ff635c7379a62ca54e502.exe	cmd.exe
PID 3736 wrote to memory of 388	3736	cmd.exe	attrib.exe
PID 3736 wrote to memory of 388	3736	cmd.exe	attrib.exe
PID 3736 wrote to memory of 388	3736	cmd.exe	attrib.exe
PID 3240 wrote to memory of 868	3240	cmd.exe	attrib.exe
PID 3240 wrote to memory of 868	3240	cmd.exe	attrib.exe
PID 3240 wrote to memory of 868	3240	cmd.exe	attrib.exe
PID 8 wrote to memory of 3164	8	b02479bd2f3ff635c7379a62ca54e502.exe	msdcsc.exe
PID 8 wrote to memory of 3164	8	b02479bd2f3ff635c7379a62ca54e502.exe	msdcsc.exe
PID 8 wrote to memory of 3164	8	b02479bd2f3ff635c7379a62ca54e502.exe	msdcsc.exe
PID 3164 wrote to memory of 1016	3164	msdcsc.exe	iexplore.exe
PID 3164 wrote to memory of 1016	3164	msdcsc.exe	iexplore.exe
PID 3164 wrote to memory of 1016	3164	msdcsc.exe	iexplore.exe
PID 3164 wrote to memory of 1016	3164	msdcsc.exe	iexplore.exe
PID 3164 wrote to memory of 1016	3164	msdcsc.exe	iexplore.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe
PID 1016 wrote to memory of 2696	1016	iexplore.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

388 attrib.exe
868 attrib.exe

pid	process
388	attrib.exe
868	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b02479bd2f3ff635c7379a62ca54e502.exe
"C:\Users\Admin\AppData\Local\Temp\b02479bd2f3ff635c7379a62ca54e502.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:8

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\b02479bd2f3ff635c7379a62ca54e502.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3240

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\b02479bd2f3ff635c7379a62ca54e502.exe" +s +h
3⤵
- Views/modifies file attributes
PID:868

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:3736

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:388

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3164

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies firewall policy service
- Modifies security service
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1016

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:2696

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

T1112

Disabling Security Tools

2

T1089

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
MD5
b02479bd2f3ff635c7379a62ca54e502

SHA1
ab25e517492161e240093753a9fb41d8cca6aa98

SHA256
668b49adbd859ede384b13bfa1082ad5254df49d8841e39fcff375bf15e057ca

SHA512
6b767502a250ee86dbece2ea14dce930ead6b0fadf97431fbb8363bc046ef5528444f875ce9a18fde72c8a2d88271a095d559b43bd1301b397fa0f303641a312

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
MD5
b02479bd2f3ff635c7379a62ca54e502

SHA1
ab25e517492161e240093753a9fb41d8cca6aa98

SHA256
668b49adbd859ede384b13bfa1082ad5254df49d8841e39fcff375bf15e057ca

SHA512
6b767502a250ee86dbece2ea14dce930ead6b0fadf97431fbb8363bc046ef5528444f875ce9a18fde72c8a2d88271a095d559b43bd1301b397fa0f303641a312

Download Submit
memory/388-4-0x0000000000000000-mapping.dmp

Download
memory/868-5-0x0000000000000000-mapping.dmp

Download
memory/1016-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1016-10-0x000000000048F888-mapping.dmp

Download
memory/1016-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2696-12-0x0000000000000000-mapping.dmp

Download
memory/2696-13-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/2696-14-0x0000000000000000-mapping.dmp

Download
memory/3164-6-0x0000000000000000-mapping.dmp

Download
memory/3240-2-0x0000000000000000-mapping.dmp

Download
memory/3736-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads