Malware Analysis Report

2025-04-13 10:41

Sample ID 220507-e7bxlacac5
Target zxcv.EXEfroccstl
SHA256 df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731
Tags
arkei default stealer suricata
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731

Threat Level: Known bad

The file zxcv.EXEfroccstl was found to be: Known bad.

Malicious Activity Summary

arkei default stealer suricata

suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

Arkei

Checks computer location settings

Loads dropped DLL

Suspicious use of SetThreadContext

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-07 04:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-07 04:34

Reported

2022-05-07 04:46

Platform

win7-20220414-en

Max time kernel

125s

Max time network

121s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
SC 185.215.113.89:80 tcp

Files

memory/1880-54-0x0000000000AA0000-0x0000000000ABE000-memory.dmp

memory/1880-55-0x00000000758D1000-0x00000000758D3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-07 04:34

Reported

2022-05-07 04:47

Platform

win10v2004-20220414-en

Max time kernel

170s

Max time network

190s

Command Line

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

Signatures

Arkei

stealer arkei

suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

suricata

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\zxcv.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4800 set thread context of 3132 N/A C:\Users\Admin\AppData\Local\Temp\zxcv.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3132 -ip 3132

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3132 -s 1316

Network

Country Destination Domain Proto
IE 20.190.159.73:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
IE 20.190.159.2:443 tcp
US 93.184.220.29:80 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
US 20.189.173.15:443 tcp
IE 20.190.159.71:443 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
IE 40.126.31.67:443 tcp
SC 185.215.113.89:80 185.215.113.89 tcp
IE 20.190.159.0:443 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
IE 20.82.209.104:443 tcp
IE 20.82.209.104:443 tcp
IE 20.82.209.104:443 tcp
US 8.8.8.8:53 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.3.0.4.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 8.8.8.8:53 rockrock.ug udp
SC 185.215.113.89:80 rockrock.ug tcp

Files

memory/4800-130-0x0000000000450000-0x000000000046E000-memory.dmp

memory/4800-131-0x00000000053E0000-0x0000000005984000-memory.dmp

memory/4800-132-0x0000000004E30000-0x0000000004EC2000-memory.dmp

memory/4800-133-0x0000000004E10000-0x0000000004E1A000-memory.dmp

memory/3132-134-0x0000000000000000-mapping.dmp

memory/3132-137-0x0000000000400000-0x000000000043D000-memory.dmp

memory/3132-135-0x0000000000400000-0x000000000043D000-memory.dmp

memory/3132-138-0x0000000000400000-0x000000000043D000-memory.dmp

memory/3132-139-0x0000000060900000-0x0000000060992000-memory.dmp

C:\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

C:\ProgramData\mozglue.dll

MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89