Malware Analysis Report

2024-08-06 11:02

Sample ID 240430-kyqx2sgf87
Target c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe
SHA256 c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe
Tags
cobaltstrike 100000000 backdoor 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe

Threat Level: Known bad

The file c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 100000000 backdoor trojan

Cobaltstrike

Unsigned PE

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-30 09:00

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-30 09:00

Reported

2024-04-30 09:03

Platform

win7-20240221-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe

"C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe"

Network

Country Destination Domain Proto
HK 156.245.13.36:8080 156.245.13.36 tcp
HK 156.245.13.36:443 156.245.13.36 tcp
HK 156.245.13.36:443 156.245.13.36 tcp
HK 156.245.13.36:443 156.245.13.36 tcp
HK 156.245.13.36:443 156.245.13.36 tcp

Files

memory/2928-2-0x0000000002890000-0x00000000028D0000-memory.dmp

memory/2928-1-0x0000000004130000-0x00000000045A2000-memory.dmp

memory/2928-20-0x0000000000400000-0x00000000004D9000-memory.dmp

memory/2928-22-0x0000000002890000-0x00000000028D0000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

C:\Users\Admin\AppData\Local\Temp\TarC440.tmp

MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-30 09:00

Reported

2024-04-30 09:03

Platform

win10v2004-20240419-en

Max time kernel

140s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe

"C:\Users\Admin\AppData\Local\Temp\c401c57365e57f1bc8d84f3e42685792b6fa6f55e91bbfdca1b170b64299efbe.exe"

Network

Country Destination Domain Proto
HK 156.245.13.36:8080 156.245.13.36 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 36.13.245.156.in-addr.arpa udp
NL 23.62.61.171:443 www.bing.com tcp
HK 156.245.13.36:443 156.245.13.36 tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 171.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
HK 156.245.13.36:443 156.245.13.36 tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 48.251.17.2.in-addr.arpa udp
HK 156.245.13.36:443 156.245.13.36 tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
HK 156.245.13.36:443 156.245.13.36 tcp

Files

memory/4384-1-0x00000000036F0000-0x0000000003725000-memory.dmp

memory/4384-2-0x0000000003730000-0x0000000003BA2000-memory.dmp

memory/4384-5-0x0000000000400000-0x00000000004D9000-memory.dmp