Malware Analysis Report

2025-06-16 05:10

Sample ID 220419-ffls6ahbb7
Target zxcvb.exellzmiwrt
SHA256 df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731
Tags
arkei default stealer
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 zxcvb.exellzmiwrt was found to be: Known bad.

Malicious Activity Summary

arkei default stealer

Arkei

Checks computer location settings

Loads dropped DLL

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-19 04:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-19 04:48

Reported

2022-04-19 05:00

Platform

win7-20220414-en

Max time kernel

64s

Max time network

59s

Command Line

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

Signatures

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
SC 185.215.113.89:80 tcp

Files

memory/1304-54-0x0000000000260000-0x000000000027E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-19 04:48

Reported

2022-04-19 04:59

Platform

win10v2004-20220414-en

Max time kernel

91s

Max time network

95s

Command Line

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

Signatures

Arkei

stealer arkei

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\zxcvb.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1740 set thread context of 2692 N/A C:\Users\Admin\AppData\Local\Temp\zxcvb.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\zxcvb.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\zxcvb.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

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

"C:\Users\Admin\AppData\Local\Temp\zxcvb.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 184 -p 2692 -ip 2692

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2692 -s 1352

Network

Country Destination Domain Proto
SC 185.215.113.89:80 185.215.113.89 tcp
GB 51.132.193.105:443 tcp
US 8.8.8.8:53 rockrock.ug udp
SC 185.215.113.89:80 rockrock.ug tcp
US 93.184.220.29:80 tcp
US 8.238.111.126:80 tcp
US 8.253.208.112:80 tcp
US 8.253.208.112:80 tcp
US 8.253.208.112:80 tcp
FR 2.18.109.224:443 tcp
US 104.18.24.243:80 tcp

Files

memory/1740-130-0x00000000000F0000-0x000000000010E000-memory.dmp

memory/1740-131-0x0000000005130000-0x00000000056D4000-memory.dmp

memory/1740-132-0x0000000004AA0000-0x0000000004B32000-memory.dmp

memory/1740-133-0x0000000004B50000-0x0000000004B5A000-memory.dmp

memory/2692-134-0x0000000000000000-mapping.dmp

memory/2692-135-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2692-137-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2692-138-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2692-139-0x0000000060900000-0x0000000060992000-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