Malware Analysis Report

2025-01-22 12:42

Sample ID 240622-2azzgs1dqr
Target 573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf
SHA256 573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf
Tags
aspackv2 persistence privilege_escalation
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

573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf

Threat Level: Known bad

The file 573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf was found to be: Known bad.

Malicious Activity Summary

aspackv2 persistence privilege_escalation

Detects executables packed with ASPack

Detects executables packed with ASPack

Event Triggered Execution: AppInit DLLs

ASPack v2.12-2.42

Executes dropped EXE

Drops file in Program Files directory

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 22:23

Signatures

Detects executables packed with ASPack

Description Indicator Process Target
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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 22:23

Reported

2024-06-22 22:25

Platform

win7-20240611-en

Max time kernel

117s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe"

Signatures

Detects executables packed with ASPack

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

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

ASPack v2.12-2.42

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\arjskvg.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\arjskvg.exe C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe N/A
File created C:\PROGRA~3\Mozilla\eekvruj.dll C:\PROGRA~3\Mozilla\arjskvg.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\arjskvg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1680 wrote to memory of 2620 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\arjskvg.exe
PID 1680 wrote to memory of 2620 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\arjskvg.exe
PID 1680 wrote to memory of 2620 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\arjskvg.exe
PID 1680 wrote to memory of 2620 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\arjskvg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe

"C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {F4B1DFC3-6ABE-4F6F-88B7-58E87E947B16} S-1-5-18:NT AUTHORITY\System:Service:

C:\PROGRA~3\Mozilla\arjskvg.exe

C:\PROGRA~3\Mozilla\arjskvg.exe -plisyaa

Network

N/A

Files

memory/948-0-0x0000000000400000-0x0000000000469000-memory.dmp

memory/948-3-0x00000000002F0000-0x000000000034C000-memory.dmp

memory/948-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/948-1-0x0000000000400000-0x0000000000469000-memory.dmp

memory/948-5-0x0000000000400000-0x000000000045B000-memory.dmp

C:\PROGRA~3\Mozilla\arjskvg.exe

MD5 36ffd1d87e7f46bf0614e309fd974cda
SHA1 b22ea8585b23d13c972ac8cc629546256484a252
SHA256 a706d3a6c277a60575fac18565721d063484cad6c447f9efa73e06b0ea247704
SHA512 0b46d6b5075eb6c71314cea32d8302dad63a22e69b200a2c5ca59a69bb516ad04877a9621a5657cc4ae1b3a95a67345785a16799184de41dee98d32191255d48

memory/2620-8-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2620-9-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2620-10-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2620-11-0x0000000000390000-0x00000000003EC000-memory.dmp

memory/2620-12-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2620-14-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 22:23

Reported

2024-06-22 22:26

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe"

Signatures

Detects executables packed with ASPack

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

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

ASPack v2.12-2.42

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\ykjyebb.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\ykjyebb.exe C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe N/A
File created C:\PROGRA~3\Mozilla\pjitnjk.dll C:\PROGRA~3\Mozilla\ykjyebb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe

"C:\Users\Admin\AppData\Local\Temp\573ac149e809e977341a1e5d84c1e3dc0166b5f1b92c6962349fda3446085faf.exe"

C:\PROGRA~3\Mozilla\ykjyebb.exe

C:\PROGRA~3\Mozilla\ykjyebb.exe -aryugnm

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 18.173.189.20.in-addr.arpa udp

Files

memory/412-0-0x0000000000400000-0x0000000000469000-memory.dmp

memory/412-1-0x0000000000400000-0x0000000000469000-memory.dmp

memory/412-2-0x0000000000442000-0x0000000000443000-memory.dmp

memory/412-3-0x0000000000400000-0x0000000000469000-memory.dmp

memory/412-4-0x0000000000400000-0x0000000000469000-memory.dmp

C:\ProgramData\Mozilla\ykjyebb.exe

MD5 e9517b37ce4fc879a56572074c9e3974
SHA1 2e6e9ed7742e89f05dee9abae9f95368862f5f97
SHA256 6c30e2424a84f4dabbe9da5be2d4385af874357e1ed1c853b40eea66dca7d4a2
SHA512 a3763089c9c695ede11a42aaa7a8d27984e9052977fe7e3b3c332cd5c190b0f399a6d1677bcb3008b824f19c61bb71fe64de96a45361f517ecbc80a003102c55

memory/412-11-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2176-9-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2176-12-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2176-13-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2176-14-0x0000000000400000-0x0000000000469000-memory.dmp

memory/2176-17-0x0000000000400000-0x000000000045B000-memory.dmp