Malware Analysis Report

2024-10-19 07:15

Sample ID 240904-w1t82avblp
Target tmk.scr.exe
SHA256 aaf3cf701b06ca873f9fdbf5b4ba33722c6ecea49316a344df35926a45bce1fb
Tags
chaos ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

aaf3cf701b06ca873f9fdbf5b4ba33722c6ecea49316a344df35926a45bce1fb

Threat Level: Known bad

The file tmk.scr.exe was found to be: Known bad.

Malicious Activity Summary

chaos ransomware

Chaos Ransomware

Chaos family

Chaos

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-09-04 18:23

Signatures

Chaos Ransomware

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

Chaos family

chaos

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 18:23

Reported

2024-09-04 18:26

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe"

Signatures

Chaos

ransomware chaos

Chaos Ransomware

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe

"C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1012,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=4376 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 34.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/2196-0-0x00007FFD01A53000-0x00007FFD01A55000-memory.dmp

memory/2196-1-0x00000000008A0000-0x000000000092C000-memory.dmp

memory/2196-2-0x00007FFD01A50000-0x00007FFD02511000-memory.dmp

memory/2196-3-0x00007FFD01A50000-0x00007FFD02511000-memory.dmp

memory/2196-4-0x00007FFD01A50000-0x00007FFD02511000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 18:23

Reported

2024-09-04 18:26

Platform

win7-20240708-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe"

Signatures

Chaos

ransomware chaos

Chaos Ransomware

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe

"C:\Users\Admin\AppData\Local\Temp\tmk.scr.exe"

Network

N/A

Files

memory/2132-0-0x000007FEF5B93000-0x000007FEF5B94000-memory.dmp

memory/2132-1-0x00000000009D0000-0x0000000000A5C000-memory.dmp

memory/2132-2-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp

memory/2132-3-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp

memory/2132-4-0x000007FEF5B93000-0x000007FEF5B94000-memory.dmp

memory/2132-5-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp