Malware Analysis Report

2025-08-05 17:03

Sample ID 240107-ycd81sdfc5
Target ab75f4edb052dbb0ec99f5f8308c8202.exe
SHA256 051243b7e0082007493c576d3b896cbf3eeec3cf9572ee669ee0f4d7dca0570d
Tags
cobaltstrike backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

051243b7e0082007493c576d3b896cbf3eeec3cf9572ee669ee0f4d7dca0570d

Threat Level: Known bad

The file ab75f4edb052dbb0ec99f5f8308c8202.exe was found to be: Known bad.

Malicious Activity Summary

cobaltstrike backdoor trojan

Cobaltstrike

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-07 19:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-07 19:38

Reported

2024-01-07 19:40

Platform

win7-20231215-en

Max time network

137s

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

Country Destination Domain Proto
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp
CN 8.136.4.131:6666 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-07 19:38

Reported

2024-01-07 19:41

Platform

win10v2004-20231215-en

Max time kernel

0s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ab75f4edb052dbb0ec99f5f8308c8202.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ab75f4edb052dbb0ec99f5f8308c8202.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\ab75f4edb052dbb0ec99f5f8308c8202.exe

"C:\Users\Admin\AppData\Local\Temp\ab75f4edb052dbb0ec99f5f8308c8202.exe"

C:\Windows\Temp\OTC一键注入.exe

"C:\Windows\Temp\OTC一键注入.exe"

C:\Windows\Temp\Direct_Load.exe

"C:\Windows\Temp\Direct_Load.exe"

Network

Country Destination Domain Proto
CN 8.136.4.131:6666 tcp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
CN 8.136.4.131:6666 tcp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 56.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 142.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
CN 8.136.4.131:6666 tcp
US 52.111.229.43:443 tcp
GB 96.17.179.68:80 tcp
GB 96.17.179.68:80 tcp
US 204.79.197.200:443 g.bing.com tcp
US 204.79.197.200:443 g.bing.com tcp
US 204.79.197.200:443 g.bing.com tcp
US 204.79.197.200:443 g.bing.com tcp
US 204.79.197.200:443 g.bing.com tcp
US 52.165.164.15:443 tcp
US 93.184.221.240:80 tcp
US 52.165.164.15:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp

Files

C:\Windows\Temp\Direct_Load.exe

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/3224-13-0x0000000002290000-0x0000000002291000-memory.dmp

memory/1104-22-0x0000000000400000-0x000000000105D000-memory.dmp

memory/3224-23-0x0000000000400000-0x000000000045C000-memory.dmp