Malware Analysis Report

2025-06-16 02:14

Sample ID 240122-g5qdbaaef8
Target 6ef384d982b8fe6de471207bf7efa7d1
SHA256 04146a5e5ccf0038e5b3a8c3bf3880493f19d99c03400af0f7ecacb0d9ef1ac0
Tags
asyncrat default rat
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

04146a5e5ccf0038e5b3a8c3bf3880493f19d99c03400af0f7ecacb0d9ef1ac0

Threat Level: Known bad

The file 6ef384d982b8fe6de471207bf7efa7d1 was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Async RAT payload

Checks computer location settings

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-22 06:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-22 06:23

Reported

2024-01-22 06:26

Platform

win7-20231215-en

Max time kernel

149s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2148 set thread context of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2148 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2148 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2148 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2148 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 2148 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mdHFZnJnjYruf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD865.tmp"

C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:2245 tcp
US 8.8.8.8:53 fresh01.ddns.net udp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
US 8.8.8.8:53 fresh01.ddns.net udp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp

Files

memory/2148-1-0x0000000074DA0000-0x000000007548E000-memory.dmp

memory/2148-0-0x0000000000FE0000-0x00000000010E0000-memory.dmp

memory/2148-2-0x0000000000CF0000-0x0000000000D30000-memory.dmp

memory/2148-3-0x0000000000850000-0x000000000086A000-memory.dmp

memory/2148-4-0x0000000074DA0000-0x000000007548E000-memory.dmp

memory/2148-5-0x0000000000CF0000-0x0000000000D30000-memory.dmp

memory/2148-6-0x00000000069F0000-0x0000000006A74000-memory.dmp

memory/2148-7-0x00000000009B0000-0x00000000009C2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpD865.tmp

MD5 c0e5eafab7b195b485417afb0843b63d
SHA1 40326bc23456620beaa66461c0d679aca2bb10cf
SHA256 919f4d1d8bc245ef94df7a155e9c14a8c6548f33d95f4ede329b0620d797a018
SHA512 540868323c8f102f48169082fdb2a81ff3acab6786d51a8734c8766da5e7593938c84e92c6a983d9b163c3679a511c317aa1508e4ff04f820db9af3db8cc7370

memory/2720-13-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-14-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-15-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-16-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2720-19-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-21-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-23-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2720-24-0x0000000074DA0000-0x000000007548E000-memory.dmp

memory/2148-25-0x0000000074DA0000-0x000000007548E000-memory.dmp

memory/2720-26-0x0000000000F20000-0x0000000000F60000-memory.dmp

memory/2720-27-0x0000000074DA0000-0x000000007548E000-memory.dmp

memory/2720-28-0x0000000000F20000-0x0000000000F60000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-22 06:23

Reported

2024-01-22 06:26

Platform

win10v2004-20231222-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3936 set thread context of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3936 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 3936 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 3936 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Windows\SysWOW64\schtasks.exe
PID 3936 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 4596 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
PID 3936 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mdHFZnJnjYruf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF81B.tmp"

C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe

"C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
N/A 127.0.0.1:2245 tcp
US 8.8.8.8:53 fresh01.ddns.net udp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:2245 tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
US 8.8.8.8:53 fresh01.ddns.net udp
FR 85.209.176.233:2256 fresh01.ddns.net tcp
N/A 127.0.0.1:2245 tcp
N/A 127.0.0.1:2245 tcp
FR 85.209.176.233:2256 fresh01.ddns.net tcp

Files

memory/3936-0-0x00000000003D0000-0x00000000004D0000-memory.dmp

memory/3936-1-0x0000000074870000-0x0000000075020000-memory.dmp

memory/3936-2-0x00000000055D0000-0x0000000005B74000-memory.dmp

memory/3936-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp

memory/3936-4-0x0000000004F60000-0x0000000004FFC000-memory.dmp

memory/3936-5-0x00000000051C0000-0x00000000051D0000-memory.dmp

memory/3936-6-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

memory/3936-7-0x0000000007BF0000-0x0000000007C0A000-memory.dmp

memory/3936-8-0x0000000074870000-0x0000000075020000-memory.dmp

memory/3936-9-0x00000000051C0000-0x00000000051D0000-memory.dmp

memory/3936-10-0x0000000005240000-0x00000000052C4000-memory.dmp

memory/3936-11-0x0000000005140000-0x0000000005152000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpF81B.tmp

MD5 21a8fcc17a2343715c1751a8f15c8ed2
SHA1 f2425e1301b213da7747dd76989087249396fa79
SHA256 10e5c505295fb9f4d1a041fecfe233bee3b6755dfadd3fe5acd3d887ce2c811d
SHA512 7be8d7e7f369eb93e2cfd6997f6bd6850e4c00b83705bdc0a21d313d74f352c5c67303a180f691c0a28f2b3a700921fde58487ea2aa5fe635f1dcc89b1ea6b9b

memory/2876-17-0x0000000000400000-0x0000000000412000-memory.dmp

memory/3936-20-0x0000000074870000-0x0000000075020000-memory.dmp

memory/2876-19-0x0000000074870000-0x0000000075020000-memory.dmp

memory/2876-21-0x0000000005310000-0x0000000005320000-memory.dmp

memory/2876-22-0x0000000074870000-0x0000000075020000-memory.dmp