Malware Analysis Report

2024-10-19 07:06

Sample ID 231224-bh6h5acccj
Target 1578590b1e0234b07316d604370a087b.bin
SHA256 d4ff635739b78e4033042ef5df1df720b46a727643d8a3e8dc6df34bf179a40f
Tags
marsstealer default spyware stealer
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

d4ff635739b78e4033042ef5df1df720b46a727643d8a3e8dc6df34bf179a40f

Threat Level: Known bad

The file 1578590b1e0234b07316d604370a087b.bin was found to be: Known bad.

Malicious Activity Summary

marsstealer default spyware stealer

Mars Stealer

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-24 01:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-24 01:09

Reported

2023-12-24 01:12

Platform

win7-20231215-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"

Signatures

Mars Stealer

stealer marsstealer

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Adobe\.exe N/A

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Roaming\Adobe\.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe

"C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"

C:\Users\Admin\AppData\Roaming\Adobe\.exe

"C:\Users\Admin\AppData\Roaming\Adobe\.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 800

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.moscow-post.su udp
RU 185.71.67.60:80 www.moscow-post.su tcp

Files

memory/2256-0-0x0000000000900000-0x0000000000978000-memory.dmp

memory/2256-1-0x0000000074170000-0x000000007485E000-memory.dmp

memory/2256-11-0x0000000004170000-0x00000000041AD000-memory.dmp

memory/3068-14-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2256-13-0x0000000004170000-0x00000000041AD000-memory.dmp

memory/2256-12-0x0000000074170000-0x000000007485E000-memory.dmp

C:\Users\Admin\AppData\Roaming\Adobe\.exe

MD5 b1d6d66282771bdaee20f0295991140a
SHA1 f65c534725a4aa947285ecbb2acf3f5083803152
SHA256 9697901177242e9a450aae820687ddbbd13196b5876ec77cdcb663cfbadb0053
SHA512 af0bd80c0fdb1c336268c1bcdb8b0a05a588a1ded511669f6974b10e19752bed5305fda870a9a1e61be30db14228194f84ec8da74e9836eec3506d0629fe0900

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-24 01:09

Reported

2023-12-24 01:12

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"

Signatures

Mars Stealer

stealer marsstealer

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Start Menu\XBELK7QXNRC.exe N/A

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\ProgramData\Start Menu\XBELK7QXNRC.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe

"C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"

C:\ProgramData\Start Menu\XBELK7QXNRC.exe

"C:\ProgramData\Start Menu\XBELK7QXNRC.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1400 -ip 1400

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1400 -s 1388

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 21.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 www.moscow-post.su udp
RU 185.71.67.60:80 www.moscow-post.su tcp
US 8.8.8.8:53 60.67.71.185.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net 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 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp

Files

memory/2344-0-0x0000000000120000-0x0000000000198000-memory.dmp

memory/2344-1-0x0000000074A20000-0x00000000751D0000-memory.dmp

C:\ProgramData\Microsoft\Windows\Start Menu\XBELK7QXNRC.exe

MD5 b1d6d66282771bdaee20f0295991140a
SHA1 f65c534725a4aa947285ecbb2acf3f5083803152
SHA256 9697901177242e9a450aae820687ddbbd13196b5876ec77cdcb663cfbadb0053
SHA512 af0bd80c0fdb1c336268c1bcdb8b0a05a588a1ded511669f6974b10e19752bed5305fda870a9a1e61be30db14228194f84ec8da74e9836eec3506d0629fe0900

memory/1400-12-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2344-13-0x0000000074A20000-0x00000000751D0000-memory.dmp

memory/1400-15-0x0000000000400000-0x000000000043D000-memory.dmp