darkcomet | a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b

General

Target

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Size

659KB
MD5

1d8488e1531d6a0b880347ac3c90aa55
SHA1

1240d4284b9a4d30b573cf3530a70cc109426051
SHA256

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b
SHA512

765a2a9d7f365ebc9c9082ea24ab9c5256b1bc44aa13596fec69c082cf0ac4a320f05ee78d7cd3df43237ac1246719dfc01d571bdf34d272141a5fb572e6388a

Score

10^/10

darkcomet sazan evasion persistence rat suricata trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

carbonkarlduckdns.org:1604

Mutex

DC_MUTEX-A82WM2C

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
AYz297gj1pvL
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

Processes:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.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"	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

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

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
suricata: ET MALWARE Zeus GameOver Possible DGA NXDOMAIN Responses
suricata: ET MALWARE Zeus GameOver Possible DGA NXDOMAIN Responses
suricata
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1144 msdcsc.exe

pid	process
1144	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:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

Windows security modification 2 TTPs 1 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

description	ioc	process
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

Processes:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.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

Processes:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1144 msdcsc.exe

pid	process
1144	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeSecurityPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeTakeOwnershipPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeLoadDriverPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeSystemProfilePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeSystemtimePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeProfSingleProcessPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeIncBasePriorityPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeCreatePagefilePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeBackupPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeRestorePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeShutdownPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeDebugPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeSystemEnvironmentPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeChangeNotifyPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeRemoteShutdownPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeUndockPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeManageVolumePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeImpersonatePrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeCreateGlobalPrivilege	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: 33	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: 34	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: 35	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: 36	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
Token: SeIncreaseQuotaPrivilege	1144	msdcsc.exe
Token: SeSecurityPrivilege	1144	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1144	msdcsc.exe
Token: SeLoadDriverPrivilege	1144	msdcsc.exe
Token: SeSystemProfilePrivilege	1144	msdcsc.exe
Token: SeSystemtimePrivilege	1144	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1144	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1144	msdcsc.exe
Token: SeCreatePagefilePrivilege	1144	msdcsc.exe
Token: SeBackupPrivilege	1144	msdcsc.exe
Token: SeRestorePrivilege	1144	msdcsc.exe
Token: SeShutdownPrivilege	1144	msdcsc.exe
Token: SeDebugPrivilege	1144	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1144	msdcsc.exe
Token: SeChangeNotifyPrivilege	1144	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1144	msdcsc.exe
Token: SeUndockPrivilege	1144	msdcsc.exe
Token: SeManageVolumePrivilege	1144	msdcsc.exe
Token: SeImpersonatePrivilege	1144	msdcsc.exe
Token: SeCreateGlobalPrivilege	1144	msdcsc.exe
Token: 33	1144	msdcsc.exe
Token: 34	1144	msdcsc.exe
Token: 35	1144	msdcsc.exe
Token: 36	1144	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1144 msdcsc.exe

pid	process
1144	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exemsdcsc.exe

description	pid	process	target process
PID 992 wrote to memory of 1144	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe	msdcsc.exe
PID 992 wrote to memory of 1144	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe	msdcsc.exe
PID 992 wrote to memory of 1144	992	a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe	msdcsc.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe
PID 1144 wrote to memory of 1420	1144	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.exe
"C:\Users\Admin\AppData\Local\Temp\a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b.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:992

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1420

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

T1112

Disabling Security Tools

2

T1089

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d8488e1531d6a0b880347ac3c90aa55

SHA1
1240d4284b9a4d30b573cf3530a70cc109426051

SHA256
a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b

SHA512
765a2a9d7f365ebc9c9082ea24ab9c5256b1bc44aa13596fec69c082cf0ac4a320f05ee78d7cd3df43237ac1246719dfc01d571bdf34d272141a5fb572e6388a

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
1d8488e1531d6a0b880347ac3c90aa55

SHA1
1240d4284b9a4d30b573cf3530a70cc109426051

SHA256
a03f3f9f48a88f30a6826f42bff8e45565d2c058abed4a83725af7db272b216b

SHA512
765a2a9d7f365ebc9c9082ea24ab9c5256b1bc44aa13596fec69c082cf0ac4a320f05ee78d7cd3df43237ac1246719dfc01d571bdf34d272141a5fb572e6388a

Download Submit
memory/992-114-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/1144-115-0x0000000000000000-mapping.dmp

Download
memory/1144-119-0x0000000000610000-0x000000000075A000-memory.dmp

Filesize
1.3MB

Download
memory/1420-118-0x0000000000000000-mapping.dmp

Download
memory/1420-120-0x0000000000A20000-0x0000000000A21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads