Malware Analysis Report

2025-01-22 12:25

Sample ID 240515-1zs2ssef77
Target 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538
SHA256 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538
Tags
aspackv2 bootkit persistence spyware stealer
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538

Threat Level: Likely malicious

The file 5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538 was found to be: Likely malicious.

Malicious Activity Summary

aspackv2 bootkit persistence spyware stealer

Detects executables containing base64 encoded User Agent

Blocklisted process makes network request

Executes dropped EXE

Reads user/profile data of web browsers

Loads dropped DLL

ASPack v2.12-2.42

Deletes itself

Writes to the Master Boot Record (MBR)

Adds Run key to start application

Enumerates connected drives

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-15 22:05

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-15 22:05

Reported

2024-05-15 22:08

Platform

win10v2004-20240426-en

Max time kernel

143s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

Signatures

Detects executables containing base64 encoded User Agent

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

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\rqsve.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\rqsve.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\gtlalexvf\\eqqjaety.dll\",AbortProc" \??\c:\windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\o: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\b: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\i: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\u: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\v: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\x: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\q: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\r: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\s: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\a: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\g: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\k: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\m: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\p: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\y: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\z: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\w: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\h: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\j: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\l: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\n: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\t: \??\c:\windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 \??\c:\windows\SysWOW64\rundll32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 \??\c:\windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString \??\c:\windows\SysWOW64\rundll32.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe N/A
N/A N/A \??\c:\rqsve.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe

"C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 -n 2&c:\rqsve.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 2

\??\c:\rqsve.exe

c:\rqsve.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

\??\c:\windows\SysWOW64\rundll32.exe

c:\windows\system32\rundll32.exe "c:\gtlalexvf\eqqjaety.dll",AbortProc c:\rqsve.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 43.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
US 67.229.62.198:803 tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 67.229.62.194:3201 tcp
US 67.229.62.197:805 tcp
US 67.229.62.197:805 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 67.229.62.197:805 tcp
US 67.229.62.194:3201 tcp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 67.229.62.194:3201 tcp
US 8.8.8.8:53 19.229.111.52.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 67.229.62.194:3201 tcp

Files

memory/1688-0-0x0000000000400000-0x0000000000428000-memory.dmp

memory/1688-2-0x0000000000400000-0x0000000000428000-memory.dmp

C:\rqsve.exe

MD5 c8772ecde730533a86eadf9b1237a990
SHA1 466a22e7365c5c498b083d85f3b80d1db0c5f372
SHA256 fffa775749c1970f4d76dd88100de2c50e1a8fbcf9e75fe9fd381da21fa31665
SHA512 f970a94138e7785cdf012ce7587dd7dce0bcf7935a2aaa521c1228d57c73ebc1b560fe7a1d5f55ea0a6f1580aeee8905751480e9a8f7b6860bf8c6a14cc9285e

memory/2156-6-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2156-8-0x0000000000400000-0x0000000000428000-memory.dmp

\??\c:\gtlalexvf\eqqjaety.dll

MD5 a2c2137ff7abf6be6bcae4252c394a69
SHA1 07b402104df563f9486c2eef975fee70f65a5145
SHA256 37ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03
SHA512 5d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9

memory/4020-11-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-14-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-13-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-12-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-15-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-17-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-19-0x0000000010000000-0x0000000010036000-memory.dmp

memory/4020-20-0x0000000010000000-0x0000000010036000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-15 22:05

Reported

2024-05-15 22:08

Platform

win7-20240419-en

Max time kernel

142s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

Signatures

Detects executables containing base64 encoded User Agent

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

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\joibl.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\joibl.exe N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\zgaby\\mczipwj.dll\",AbortProc" \??\c:\windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\b: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\e: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\i: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\t: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\a: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\g: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\h: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\m: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\p: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\q: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\r: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\s: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\u: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\w: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\y: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\j: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\k: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\l: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\n: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\o: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\v: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\x: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\z: \??\c:\windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 \??\c:\windows\SysWOW64\rundll32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 \??\c:\windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString \??\c:\windows\SysWOW64\rundll32.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe N/A
N/A N/A \??\c:\joibl.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2484 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe C:\Windows\SysWOW64\cmd.exe
PID 2484 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe C:\Windows\SysWOW64\cmd.exe
PID 2484 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe C:\Windows\SysWOW64\cmd.exe
PID 2484 wrote to memory of 3032 N/A C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe C:\Windows\SysWOW64\cmd.exe
PID 3032 wrote to memory of 1664 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3032 wrote to memory of 1664 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3032 wrote to memory of 1664 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3032 wrote to memory of 1664 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3032 wrote to memory of 1812 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\joibl.exe
PID 3032 wrote to memory of 1812 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\joibl.exe
PID 3032 wrote to memory of 1812 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\joibl.exe
PID 3032 wrote to memory of 1812 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\joibl.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 1812 wrote to memory of 2708 N/A \??\c:\joibl.exe \??\c:\windows\SysWOW64\rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe

"C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 -n 2&c:\joibl.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 2

\??\c:\joibl.exe

c:\joibl.exe "C:\Users\Admin\AppData\Local\Temp\5374555783b3c7492b217c73a90a89fb35d41cd0f4b8dae3c38031538e0fd538.exe"

\??\c:\windows\SysWOW64\rundll32.exe

c:\windows\system32\rundll32.exe "c:\zgaby\mczipwj.dll",AbortProc c:\joibl.exe

Network

Country Destination Domain Proto
US 67.229.62.198:803 tcp
US 67.229.62.198:803 tcp
US 67.229.62.194:3201 tcp
US 67.229.62.197:805 tcp
US 67.229.62.197:805 tcp
US 67.229.62.197:805 tcp
US 67.229.62.197:805 tcp
US 67.229.62.194:3201 tcp
US 67.229.62.194:3201 tcp
US 67.229.62.194:3201 tcp

Files

memory/2484-0-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2484-2-0x0000000000400000-0x0000000000428000-memory.dmp

memory/1812-6-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3032-5-0x0000000000170000-0x0000000000198000-memory.dmp

C:\joibl.exe

MD5 5bacbd25abc7682abde7ba93c8d5fdb1
SHA1 e1c5466d0ba2e35ac747e297591de73ee51c2b7b
SHA256 ce62402190dd72a342781a1612bf9d15aa2547f166f054f048d08db307275288
SHA512 71801d05abc4d76af0e62076da5f510c292157a4b580cf6624515c402f85ec77f349ccff1bc06bd32f0461ac242775e1dff5f792fd294fe81eb24492a5074e96

memory/1812-8-0x0000000000400000-0x0000000000428000-memory.dmp

\??\c:\zgaby\mczipwj.dll

MD5 a2c2137ff7abf6be6bcae4252c394a69
SHA1 07b402104df563f9486c2eef975fee70f65a5145
SHA256 37ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03
SHA512 5d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9

memory/2708-14-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-15-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-16-0x0000000010033000-0x0000000010034000-memory.dmp

memory/2708-17-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-19-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-18-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-20-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-22-0x0000000010033000-0x0000000010034000-memory.dmp

memory/2708-25-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-26-0x0000000010000000-0x0000000010036000-memory.dmp

memory/2708-27-0x0000000010000000-0x0000000010036000-memory.dmp