Malware Analysis Report

2024-08-06 18:55

Sample ID 240620-vyxqpsyfqa
Target smss.exe
SHA256 21095dc807f1c7f783e3758a7edc7b140ac95b0676a04d1d9c06f46d822a6987
Tags
darkcomet rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

21095dc807f1c7f783e3758a7edc7b140ac95b0676a04d1d9c06f46d822a6987

Threat Level: Known bad

The file smss.exe was found to be: Known bad.

Malicious Activity Summary

darkcomet rat trojan

Darkcomet family

Darkcomet

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-20 17:24

Signatures

Darkcomet family

darkcomet

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 17:24

Reported

2024-06-20 17:27

Platform

win7-20240508-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\smss.exe"

Signatures

Darkcomet

trojan rat darkcomet

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3056 set thread context of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSecurityPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemtimePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeBackupPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeRestorePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeUndockPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeManageVolumePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeImpersonatePrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: 33 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: 34 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A
Token: 35 N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 3056 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Local\Temp\smss.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

Processes

C:\Users\Admin\AppData\Local\Temp\smss.exe

"C:\Users\Admin\AppData\Local\Temp\smss.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp

Files

memory/3056-0-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/3056-2-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/1836-1-0x0000000000400000-0x00000000004C3000-memory.dmp