asyncrat | 525209de288e36bab56d3a19446249ffd067c8757b5d5870daa6a782b9567e74

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:12

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General

Target

6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe
Size

359KB
MD5

940f934bbb0f83a1565250113e0b6bb5
SHA1

9de96f718f5fb4e0f9da17ca7c9a235244063e88
SHA256

6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff
SHA512

7a010a7621b71036f271f4fcb7d9b84d1162e45109931d5c27d2ed8a4aab0d21477e012a6c54eaea31b7aefaa6803209b79aaedae3f01f31c560d9bbc3b75e13
SSDEEP

6144:IUEkEIkj1Osfi2Owt0wJBzxmywv82bsmnEzeyZIxW/QwoBikWbz+/shAJhUI+dD:RXVYi2Om0kWywv82bsmse6KW/QwoBikN

Score

10^/10

asyncrat discovery execution rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2728	Powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
4	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1764 set thread context of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe
1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe
2728	Powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe
Token: SeDebugPrivilege	2728	Powershell.exe
Token: SeDebugPrivilege	2872	AddInProcess32.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2872	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	32
PID 1764 wrote to memory of 2728	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	33
PID 1764 wrote to memory of 2728	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	33
PID 1764 wrote to memory of 2728	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	33
PID 1764 wrote to memory of 2728	1764	6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe	33

C:\Users\Admin\AppData\Local\Temp\6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe
"C:\Users\Admin\AppData\Local\Temp\6c25a9ad3a7149deae7bb50429c9fefe20b60a59914bd7b63174796b640adfff.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Firefox\update.exe"'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1764-0-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/1764-1-0x00000000008F0000-0x0000000000950000-memory.dmp

Filesize
384KB

Download
memory/1764-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1764-3-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/1764-4-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/1764-5-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/1764-6-0x0000000000390000-0x00000000003DE000-memory.dmp

Filesize
312KB

Download
memory/1764-22-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-7-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-15-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-19-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-17-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2872-12-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-11-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-21-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-23-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-9-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2872-26-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download