Malware Analysis Report

2024-10-19 10:21

Sample ID 220129-r19w9scahk
Target a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0
SHA256 a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0
Tags
crimsonrat persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0

Threat Level: Known bad

The file a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0 was found to be: Known bad.

Malicious Activity Summary

crimsonrat persistence

CrimsonRAT Main Payload

Crimsonrat family

Adds Run key to start application

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-29 14:40

Signatures

CrimsonRAT Main Payload

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

Crimsonrat family

crimsonrat

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-29 14:40

Reported

2022-01-29 14:44

Platform

win7-en-20211208

Max time kernel

118s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\ms_mainApp = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\windowsWord.exe" C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe

"C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe"

Network

Country Destination Domain Proto
DE 193.164.131.58:10000 tcp
DE 193.164.131.58:10000 tcp
DE 193.164.131.58:10000 tcp

Files

memory/764-54-0x0000000075D61000-0x0000000075D63000-memory.dmp

memory/764-55-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-01-29 14:40

Reported

2022-01-29 14:45

Platform

win10-en-20211208

Max time kernel

158s

Max time network

191s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\ms_mainApp = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\windowsWord.exe" C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe

"C:\Users\Admin\AppData\Local\Temp\a68219383dd7e7dfd4142adac8573f89a5f6efe2feeb83c871d45c989376b8a0.exe"

Network

Country Destination Domain Proto
DE 193.164.131.58:10000 tcp
US 8.8.8.8:53 oneocsp.microsoft.com udp
US 204.79.197.203:80 oneocsp.microsoft.com tcp
DE 193.164.131.58:10000 tcp
DE 193.164.131.58:10000 tcp

Files

memory/1992-118-0x0000000000600000-0x000000000074A000-memory.dmp