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

956 SystemUI.exe
Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

908 notepad.exe
Loads dropped DLL 2 IoCs

Processes:

hobaa.exe

pid process

1376 hobaa.exe
1376 hobaa.exe

pid	process
956	SystemUI.exe

pid	process
908	notepad.exe

pid	process
1376	hobaa.exe
1376	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-1-5-21-790309383-526510583-3802439154-1000\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

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

hobaa.exeSystemUI.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1376	hobaa.exe
Token: SeSecurityPrivilege	1376	hobaa.exe
Token: SeTakeOwnershipPrivilege	1376	hobaa.exe
Token: SeLoadDriverPrivilege	1376	hobaa.exe
Token: SeSystemProfilePrivilege	1376	hobaa.exe
Token: SeSystemtimePrivilege	1376	hobaa.exe
Token: SeProfSingleProcessPrivilege	1376	hobaa.exe
Token: SeIncBasePriorityPrivilege	1376	hobaa.exe
Token: SeCreatePagefilePrivilege	1376	hobaa.exe
Token: SeBackupPrivilege	1376	hobaa.exe
Token: SeRestorePrivilege	1376	hobaa.exe
Token: SeShutdownPrivilege	1376	hobaa.exe
Token: SeDebugPrivilege	1376	hobaa.exe
Token: SeSystemEnvironmentPrivilege	1376	hobaa.exe
Token: SeChangeNotifyPrivilege	1376	hobaa.exe
Token: SeRemoteShutdownPrivilege	1376	hobaa.exe
Token: SeUndockPrivilege	1376	hobaa.exe
Token: SeManageVolumePrivilege	1376	hobaa.exe
Token: SeImpersonatePrivilege	1376	hobaa.exe
Token: SeCreateGlobalPrivilege	1376	hobaa.exe
Token: 33	1376	hobaa.exe
Token: 34	1376	hobaa.exe
Token: 35	1376	hobaa.exe
Token: SeIncreaseQuotaPrivilege	956	SystemUI.exe
Token: SeSecurityPrivilege	956	SystemUI.exe
Token: SeTakeOwnershipPrivilege	956	SystemUI.exe
Token: SeLoadDriverPrivilege	956	SystemUI.exe
Token: SeSystemProfilePrivilege	956	SystemUI.exe
Token: SeSystemtimePrivilege	956	SystemUI.exe
Token: SeProfSingleProcessPrivilege	956	SystemUI.exe
Token: SeIncBasePriorityPrivilege	956	SystemUI.exe
Token: SeCreatePagefilePrivilege	956	SystemUI.exe
Token: SeBackupPrivilege	956	SystemUI.exe
Token: SeRestorePrivilege	956	SystemUI.exe
Token: SeShutdownPrivilege	956	SystemUI.exe
Token: SeDebugPrivilege	956	SystemUI.exe
Token: SeSystemEnvironmentPrivilege	956	SystemUI.exe
Token: SeChangeNotifyPrivilege	956	SystemUI.exe
Token: SeRemoteShutdownPrivilege	956	SystemUI.exe
Token: SeUndockPrivilege	956	SystemUI.exe
Token: SeManageVolumePrivilege	956	SystemUI.exe
Token: SeImpersonatePrivilege	956	SystemUI.exe
Token: SeCreateGlobalPrivilege	956	SystemUI.exe
Token: 33	956	SystemUI.exe
Token: 34	956	SystemUI.exe
Token: 35	956	SystemUI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

SystemUI.exe

pid process

956 SystemUI.exe

pid	process
956	SystemUI.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

hobaa.exe

description	pid	process	target process
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 908	1376	hobaa.exe	notepad.exe
PID 1376 wrote to memory of 956	1376	hobaa.exe	SystemUI.exe
PID 1376 wrote to memory of 956	1376	hobaa.exe	SystemUI.exe
PID 1376 wrote to memory of 956	1376	hobaa.exe	SystemUI.exe
PID 1376 wrote to memory of 956	1376	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
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:908

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:956

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

System Information Discovery

1

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

MD5
73cf29c4ce3770bcf52c21b94588ca24

SHA1
81180bc25cc7a11cc570085ff383e356232d27f0

SHA256
3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce

SHA512
f05600475b81e9434f9268ee5af33c760204af2e6ff0efd26dda20d123b004c33e75aef68182a5a43b0d34160ead09041b29e6ac9ad3b4b59485a29245f531b1

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

MD5
73cf29c4ce3770bcf52c21b94588ca24

SHA1
81180bc25cc7a11cc570085ff383e356232d27f0

SHA256
3033e88038cf80d4ea502099291f9ea0e93c5995f96282ad26e5c21e8442c5ce

SHA512
f05600475b81e9434f9268ee5af33c760204af2e6ff0efd26dda20d123b004c33e75aef68182a5a43b0d34160ead09041b29e6ac9ad3b4b59485a29245f531b1

Download Submit
memory/908-55-0x0000000000000000-mapping.dmp

Download
memory/956-59-0x0000000000000000-mapping.dmp

Download
memory/1376-54-0x0000000075D21000-0x0000000075D23000-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