Malware Analysis Report

2024-10-19 07:06

Sample ID 231222-t13t3agfan
Target as_driver.exe
SHA256 76db9e74e9f0384c822b933a464cbc1f63b4c9a0a0b064774f09d8ee946d800c
Tags
spyware stealer marsstealer default
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

76db9e74e9f0384c822b933a464cbc1f63b4c9a0a0b064774f09d8ee946d800c

Threat Level: Known bad

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

Malicious Activity Summary

spyware stealer marsstealer default

Mars Stealer

Checks computer location settings

Loads dropped DLL

Reads user/profile data of web browsers

Executes dropped EXE

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-22 16:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 16:32

Reported

2023-12-22 16:33

Platform

win7-20231215-en

Max time kernel

19s

Max time network

24s

Command Line

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

Signatures

Executes dropped EXE

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

Processes

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

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

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 812

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/2428-1-0x0000000074BC0000-0x00000000752AE000-memory.dmp

memory/2428-0-0x00000000003C0000-0x0000000000432000-memory.dmp

\Users\Admin\AppData\Roaming\Adobe\QP.exe

MD5 b2f88f3f2477cb248a2bbdba8fd408b0
SHA1 94a7311b4d847f399da8785df3a1e157367f217e
SHA256 c6bb4119d28387ba96d8f721a5134cca03c623e9f514769e4cf6b5f7c3f2291d
SHA512 a0bd24bcaf6b41a28ba817aa42a7c9a92c6274112133494d4e2ac1422e0a556c8f8b7376273ffb152a610fe55b4b6b42e91b222d61572b02db6b0a72aaec9f05

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

MD5 857e877260b629b84e79fdbf9bb40fd7
SHA1 f97f95b83c08994fb011754d6e58258f435d13a9
SHA256 96f38f7816f991cac63353f2a1ed8a2a2fcd9a2d3670baa017dd2bbd132fea56
SHA512 67e3df33bff27a9706cbe4178570e7b55d7e31bf712bbdcf0647792d1c16a8842d0cab463f54308369cf6a514a23aca1575568aa009250de12bd37baaea9c26a

memory/2428-10-0x0000000001F40000-0x0000000001F7D000-memory.dmp

memory/2428-13-0x0000000074BC0000-0x00000000752AE000-memory.dmp

memory/2428-12-0x0000000001F40000-0x0000000001F7D000-memory.dmp

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

MD5 b1d6d66282771bdaee20f0295991140a
SHA1 f65c534725a4aa947285ecbb2acf3f5083803152
SHA256 9697901177242e9a450aae820687ddbbd13196b5876ec77cdcb663cfbadb0053
SHA512 af0bd80c0fdb1c336268c1bcdb8b0a05a588a1ded511669f6974b10e19752bed5305fda870a9a1e61be30db14228194f84ec8da74e9836eec3506d0629fe0900

\Users\Admin\AppData\Roaming\Adobe\QP.exe

MD5 1c0e585e9e7a20be439b92ae66d8a9c7
SHA1 ee55776ba1d8bae625abc2728b1ed4e443631050
SHA256 059ab835820a1a952e9c8e5a8148dc64fc6607f3a8952eb91fb15fddd10357fb
SHA512 3f368e84e900ee77916e176c66bdc2fc82f3571e8578c5b9c14b811fc9769cf07d28708d04f22c02c4e18e538257f873bd01bd64b3cef2606bd211466282f59c

\Users\Admin\AppData\Roaming\Adobe\QP.exe

MD5 98f9230dc65e24709fd2c52b602bec1e
SHA1 5b609c31c1e46a4a5c24a9afbca933f08fd547ed
SHA256 72dbf70c6eb90d25a26c77bab8f79db96dcc4158722f7a1f042a8c207bf97b52
SHA512 ba2f10e1664b4847ab393c13b79807ce2e0c83442a000a1f96da6dc76b62932cb32135abf737c076e6df228514b9b7324e51e83ae142312c1d3e3dcb8f0fc982

\Users\Admin\AppData\Roaming\Adobe\QP.exe

MD5 75e84dc211242babc2dae7824c059ca6
SHA1 5af39e45091002a28cff741395d67167d0c63706
SHA256 d1de2a22467266958a1f5523db2dc3401289162ff29af0cecf76152634698078
SHA512 1fa6980fb0884822f02eca23db038f3d98ffb201b3011b55e20be327acbb7b16abd957407880fce57ba0d4a23a67651384ee20f3d61c2e278ae9e5e45539bd6f

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 16:32

Reported

2023-12-22 16:35

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

157s

Command Line

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

Signatures

Mars Stealer

stealer marsstealer

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\as_driver.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Packages\304YBDS.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\Packages\304YBDS.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1968 wrote to memory of 776 N/A C:\Users\Admin\AppData\Local\Temp\as_driver.exe C:\ProgramData\Packages\304YBDS.exe
PID 1968 wrote to memory of 776 N/A C:\Users\Admin\AppData\Local\Temp\as_driver.exe C:\ProgramData\Packages\304YBDS.exe
PID 1968 wrote to memory of 776 N/A C:\Users\Admin\AppData\Local\Temp\as_driver.exe C:\ProgramData\Packages\304YBDS.exe

Processes

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

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

C:\ProgramData\Packages\304YBDS.exe

"C:\ProgramData\Packages\304YBDS.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 776 -ip 776

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 776 -s 1352

Network

Country Destination Domain Proto
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

memory/1968-0-0x0000000074AC0000-0x0000000075270000-memory.dmp

memory/1968-1-0x00000000005B0000-0x0000000000622000-memory.dmp

C:\ProgramData\Packages\304YBDS.exe

MD5 b1d6d66282771bdaee20f0295991140a
SHA1 f65c534725a4aa947285ecbb2acf3f5083803152
SHA256 9697901177242e9a450aae820687ddbbd13196b5876ec77cdcb663cfbadb0053
SHA512 af0bd80c0fdb1c336268c1bcdb8b0a05a588a1ded511669f6974b10e19752bed5305fda870a9a1e61be30db14228194f84ec8da74e9836eec3506d0629fe0900

memory/776-10-0x0000000000400000-0x000000000043D000-memory.dmp

memory/1968-12-0x0000000074AC0000-0x0000000075270000-memory.dmp

memory/776-14-0x0000000000400000-0x000000000043D000-memory.dmp