darkcomet | 8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

General

Target

loader.exe
Size

659KB
MD5

559e77c66347f99fc2ab5e9ef757ce0d
SHA1

86bd1056e44cdf6dcd3188e16f55cef80a840949
SHA256

8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce
SHA512

30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Score

10^/10

darkcomet sazan evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-LJTACQW

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
l51rypEngfWg
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:

loader.exe

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"	loader.exe

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exemsdcsc.exe

description	ioc	process
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
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

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 4 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

msdcsc.exeiexplore.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe

Disables RegEdit via registry modification 2 IoCs

evasion

Processes:

msdcsc.exeiexplore.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1604 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

loader.exe

pid process

1836 loader.exe
1836 loader.exe

pid	process
1604	msdcsc.exe

pid	process
1836	loader.exe
1836	loader.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\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 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msdcsc.exeiexplore.exeloader.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	loader.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1604 set thread context of 1652 1604 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 1604 set thread context of 1652	1604	msdcsc.exe	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

loader.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1836	loader.exe
Token: SeSecurityPrivilege	1836	loader.exe
Token: SeTakeOwnershipPrivilege	1836	loader.exe
Token: SeLoadDriverPrivilege	1836	loader.exe
Token: SeSystemProfilePrivilege	1836	loader.exe
Token: SeSystemtimePrivilege	1836	loader.exe
Token: SeProfSingleProcessPrivilege	1836	loader.exe
Token: SeIncBasePriorityPrivilege	1836	loader.exe
Token: SeCreatePagefilePrivilege	1836	loader.exe
Token: SeBackupPrivilege	1836	loader.exe
Token: SeRestorePrivilege	1836	loader.exe
Token: SeShutdownPrivilege	1836	loader.exe
Token: SeDebugPrivilege	1836	loader.exe
Token: SeSystemEnvironmentPrivilege	1836	loader.exe
Token: SeChangeNotifyPrivilege	1836	loader.exe
Token: SeRemoteShutdownPrivilege	1836	loader.exe
Token: SeUndockPrivilege	1836	loader.exe
Token: SeManageVolumePrivilege	1836	loader.exe
Token: SeImpersonatePrivilege	1836	loader.exe
Token: SeCreateGlobalPrivilege	1836	loader.exe
Token: 33	1836	loader.exe
Token: 34	1836	loader.exe
Token: 35	1836	loader.exe
Token: SeIncreaseQuotaPrivilege	1604	msdcsc.exe
Token: SeSecurityPrivilege	1604	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1604	msdcsc.exe
Token: SeLoadDriverPrivilege	1604	msdcsc.exe
Token: SeSystemProfilePrivilege	1604	msdcsc.exe
Token: SeSystemtimePrivilege	1604	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1604	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1604	msdcsc.exe
Token: SeCreatePagefilePrivilege	1604	msdcsc.exe
Token: SeBackupPrivilege	1604	msdcsc.exe
Token: SeRestorePrivilege	1604	msdcsc.exe
Token: SeShutdownPrivilege	1604	msdcsc.exe
Token: SeDebugPrivilege	1604	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1604	msdcsc.exe
Token: SeChangeNotifyPrivilege	1604	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1604	msdcsc.exe
Token: SeUndockPrivilege	1604	msdcsc.exe
Token: SeManageVolumePrivilege	1604	msdcsc.exe
Token: SeImpersonatePrivilege	1604	msdcsc.exe
Token: SeCreateGlobalPrivilege	1604	msdcsc.exe
Token: 33	1604	msdcsc.exe
Token: 34	1604	msdcsc.exe
Token: 35	1604	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1652	iexplore.exe
Token: SeSecurityPrivilege	1652	iexplore.exe
Token: SeTakeOwnershipPrivilege	1652	iexplore.exe
Token: SeLoadDriverPrivilege	1652	iexplore.exe
Token: SeSystemProfilePrivilege	1652	iexplore.exe
Token: SeSystemtimePrivilege	1652	iexplore.exe
Token: SeProfSingleProcessPrivilege	1652	iexplore.exe
Token: SeIncBasePriorityPrivilege	1652	iexplore.exe
Token: SeCreatePagefilePrivilege	1652	iexplore.exe
Token: SeBackupPrivilege	1652	iexplore.exe
Token: SeRestorePrivilege	1652	iexplore.exe
Token: SeShutdownPrivilege	1652	iexplore.exe
Token: SeDebugPrivilege	1652	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1652	iexplore.exe
Token: SeChangeNotifyPrivilege	1652	iexplore.exe
Token: SeRemoteShutdownPrivilege	1652	iexplore.exe
Token: SeUndockPrivilege	1652	iexplore.exe
Token: SeManageVolumePrivilege	1652	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1652 iexplore.exe

pid	process
1652	iexplore.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

loader.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 1836 wrote to memory of 1604	1836	loader.exe	msdcsc.exe
PID 1836 wrote to memory of 1604	1836	loader.exe	msdcsc.exe
PID 1836 wrote to memory of 1604	1836	loader.exe	msdcsc.exe
PID 1836 wrote to memory of 1604	1836	loader.exe	msdcsc.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1604 wrote to memory of 1652	1604	msdcsc.exe	iexplore.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe
PID 1652 wrote to memory of 1020	1652	iexplore.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1836

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
- Disables RegEdit via registry modification
- 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:1604

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

T1112

Disabling Security Tools

2

T1089

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
659KB

MD5
559e77c66347f99fc2ab5e9ef757ce0d

SHA1
86bd1056e44cdf6dcd3188e16f55cef80a840949

SHA256
8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

SHA512
30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
659KB

MD5
559e77c66347f99fc2ab5e9ef757ce0d

SHA1
86bd1056e44cdf6dcd3188e16f55cef80a840949

SHA256
8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

SHA512
30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
659KB

MD5
559e77c66347f99fc2ab5e9ef757ce0d

SHA1
86bd1056e44cdf6dcd3188e16f55cef80a840949

SHA256
8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

SHA512
30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
659KB

MD5
559e77c66347f99fc2ab5e9ef757ce0d

SHA1
86bd1056e44cdf6dcd3188e16f55cef80a840949

SHA256
8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

SHA512
30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Download Submit
memory/1020-61-0x0000000000000000-mapping.dmp

Download
memory/1604-57-0x0000000000000000-mapping.dmp

Download
memory/1836-54-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads