darkcomet | 3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce

General

Target

hobaa.exe
Size

658KB
MD5

73cf29c4ce3770bcf52c21b94588ca24
SHA1

81180bc25cc7a11cc570085ff383e356232d27f0
SHA256

3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce
SHA512

f05600475b81e9434f9268ee5af33c760204af2e6ff0efd26dda20d123b004c33e75aef68182a5a43b0d34160ead09041b29e6ac9ad3b4b59485a29245f531b1

Score

10^/10

darkcomet sazan persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

4.tcp.eu.ngrok.io:14008

Mutex

DC_MUTEX-K3TSWRH

Attributes

InstallPath
MSDCSC\SystemUI.exe
gencode
2Ua3NFMLv0El
install
true
offline_keylogger
true
persistence
false
reg_key
SystemFile

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:

hobaa.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\SystemUI.exe"	hobaa.exe

Executes dropped EXE 1 IoCs

Processes:

SystemUI.exe

pid process

4360 SystemUI.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:

hobaa.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation hobaa.exe

pid	process
4360	SystemUI.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	hobaa.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

hobaa.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemFile = "C:\\Windows\\system32\\MSDCSC\\SystemUI.exe"	hobaa.exe

Drops file in System32 directory 3 IoCs

Processes:

hobaa.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\SystemUI.exe	hobaa.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\SystemUI.exe	hobaa.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	hobaa.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:

hobaa.exe

description ioc process

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

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

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

hobaa.exeSystemUI.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	752	hobaa.exe
Token: SeSecurityPrivilege	752	hobaa.exe
Token: SeTakeOwnershipPrivilege	752	hobaa.exe
Token: SeLoadDriverPrivilege	752	hobaa.exe
Token: SeSystemProfilePrivilege	752	hobaa.exe
Token: SeSystemtimePrivilege	752	hobaa.exe
Token: SeProfSingleProcessPrivilege	752	hobaa.exe
Token: SeIncBasePriorityPrivilege	752	hobaa.exe
Token: SeCreatePagefilePrivilege	752	hobaa.exe
Token: SeBackupPrivilege	752	hobaa.exe
Token: SeRestorePrivilege	752	hobaa.exe
Token: SeShutdownPrivilege	752	hobaa.exe
Token: SeDebugPrivilege	752	hobaa.exe
Token: SeSystemEnvironmentPrivilege	752	hobaa.exe
Token: SeChangeNotifyPrivilege	752	hobaa.exe
Token: SeRemoteShutdownPrivilege	752	hobaa.exe
Token: SeUndockPrivilege	752	hobaa.exe
Token: SeManageVolumePrivilege	752	hobaa.exe
Token: SeImpersonatePrivilege	752	hobaa.exe
Token: SeCreateGlobalPrivilege	752	hobaa.exe
Token: 33	752	hobaa.exe
Token: 34	752	hobaa.exe
Token: 35	752	hobaa.exe
Token: 36	752	hobaa.exe
Token: SeIncreaseQuotaPrivilege	4360	SystemUI.exe
Token: SeSecurityPrivilege	4360	SystemUI.exe
Token: SeTakeOwnershipPrivilege	4360	SystemUI.exe
Token: SeLoadDriverPrivilege	4360	SystemUI.exe
Token: SeSystemProfilePrivilege	4360	SystemUI.exe
Token: SeSystemtimePrivilege	4360	SystemUI.exe
Token: SeProfSingleProcessPrivilege	4360	SystemUI.exe
Token: SeIncBasePriorityPrivilege	4360	SystemUI.exe
Token: SeCreatePagefilePrivilege	4360	SystemUI.exe
Token: SeBackupPrivilege	4360	SystemUI.exe
Token: SeRestorePrivilege	4360	SystemUI.exe
Token: SeShutdownPrivilege	4360	SystemUI.exe
Token: SeDebugPrivilege	4360	SystemUI.exe
Token: SeSystemEnvironmentPrivilege	4360	SystemUI.exe
Token: SeChangeNotifyPrivilege	4360	SystemUI.exe
Token: SeRemoteShutdownPrivilege	4360	SystemUI.exe
Token: SeUndockPrivilege	4360	SystemUI.exe
Token: SeManageVolumePrivilege	4360	SystemUI.exe
Token: SeImpersonatePrivilege	4360	SystemUI.exe
Token: SeCreateGlobalPrivilege	4360	SystemUI.exe
Token: 33	4360	SystemUI.exe
Token: 34	4360	SystemUI.exe
Token: 35	4360	SystemUI.exe
Token: 36	4360	SystemUI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

SystemUI.exe

pid process

4360 SystemUI.exe

pid	process
4360	SystemUI.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

hobaa.exe

description	pid	process	target process
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 3596	752	hobaa.exe	notepad.exe
PID 752 wrote to memory of 4360	752	hobaa.exe	SystemUI.exe
PID 752 wrote to memory of 4360	752	hobaa.exe	SystemUI.exe
PID 752 wrote to memory of 4360	752	hobaa.exe	SystemUI.exe

C:\Users\Admin\AppData\Local\Temp\hobaa.exe
"C:\Users\Admin\AppData\Local\Temp\hobaa.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:752

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:3596

C:\Windows\SysWOW64\MSDCSC\SystemUI.exe
"C:\Windows\system32\MSDCSC\SystemUI.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4360

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

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:\Windows\SysWOW64\MSDCSC\SystemUI.exe
Filesize
658KB

MD5
73cf29c4ce3770bcf52c21b94588ca24

SHA1
81180bc25cc7a11cc570085ff383e356232d27f0

SHA256
3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce

SHA512
f05600475b81e9434f9268ee5af33c760204af2e6ff0efd26dda20d123b004c33e75aef68182a5a43b0d34160ead09041b29e6ac9ad3b4b59485a29245f531b1

Download Submit
C:\Windows\SysWOW64\MSDCSC\SystemUI.exe
Filesize
658KB

MD5
73cf29c4ce3770bcf52c21b94588ca24

SHA1
81180bc25cc7a11cc570085ff383e356232d27f0

SHA256
3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce

SHA512
f05600475b81e9434f9268ee5af33c760204af2e6ff0efd26dda20d123b004c33e75aef68182a5a43b0d34160ead09041b29e6ac9ad3b4b59485a29245f531b1

Download Submit
memory/3596-130-0x0000000000000000-mapping.dmp

Download
memory/4360-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads