asyncrat | 4328098ccec01385575732e4e8d27ca234132d7714801ce75cb343f8b943e806

General

Target

script_rust Autogun.exe
Size

158KB
MD5

e2a386c9361821a799e06ec0d2bd00d4
SHA1

8c021c9435c6dd9afa0fc831f6d678c070fa569b
SHA256

ad09b83fa9f8d736fad4a986c8163715d5527610929d9f0f7afd1db28824288c
SHA512

246154bf280f4d92c1f61fc5705e4258a82602f566135caec6e54e6e531215f3aac51470cd3e58a69e6eea0d0b9595c180c5db9b90ebd2616c9aca3ed4f3f9fc
SSDEEP

3072:z5RpQAYz728HyfLAp5evKcoOGSyViThMRKXBwLs/z0wKLA0WeGZ0gTypY:tnvYz728YPjgKXAs/sLA0W9ZX

Score

10^/10

asyncrat pou rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Pou

Mutex

R4rg

Attributes

delay
1
install
true
install_file
Runtime Broker.exe
install_folder
%Temp%
pastebin_config
https://pastebin.com/raw/SctPUR4x

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/4736-6-0x000002AC77480000-0x000002AC77496000-memory.dmp	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	script_rust Autogun.exe

Executes dropped EXE 1 IoCs

pid	Process
3272	Runtime Broker.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
12	pastebin.com
13	pastebin.com
14	7.tcp.eu.ngrok.io
43	7.tcp.eu.ngrok.io
53	7.tcp.eu.ngrok.io

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2016	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2644	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe
4736	script_rust Autogun.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4736	script_rust Autogun.exe
Token: SeDebugPrivilege	4736	script_rust Autogun.exe
Token: SeDebugPrivilege	3272	Runtime Broker.exe
Token: SeDebugPrivilege	3272	Runtime Broker.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 1488	4736	script_rust Autogun.exe	86
PID 4736 wrote to memory of 1488	4736	script_rust Autogun.exe	86
PID 4736 wrote to memory of 440	4736	script_rust Autogun.exe	88
PID 4736 wrote to memory of 440	4736	script_rust Autogun.exe	88
PID 1488 wrote to memory of 2644	1488	cmd.exe	90
PID 1488 wrote to memory of 2644	1488	cmd.exe	90
PID 440 wrote to memory of 2016	440	cmd.exe	91
PID 440 wrote to memory of 2016	440	cmd.exe	91
PID 440 wrote to memory of 3272	440	cmd.exe	96
PID 440 wrote to memory of 3272	440	cmd.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\script_rust Autogun.exe
"C:\Users\Admin\AppData\Local\Temp\script_rust Autogun.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2644
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7F90.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2016
- - C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
    "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe

Filesize
158KB

MD5
e2a386c9361821a799e06ec0d2bd00d4

SHA1
8c021c9435c6dd9afa0fc831f6d678c070fa569b

SHA256
ad09b83fa9f8d736fad4a986c8163715d5527610929d9f0f7afd1db28824288c

SHA512
246154bf280f4d92c1f61fc5705e4258a82602f566135caec6e54e6e531215f3aac51470cd3e58a69e6eea0d0b9595c180c5db9b90ebd2616c9aca3ed4f3f9fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7F90.tmp.bat

Filesize
161B

MD5
cbe0c533d3cfb3511640aef0b211faa6

SHA1
383eb0e6cdacd175810368c5888eadc57050b791

SHA256
8b815ad9879e86483ea1865a188b8760d7716ce1b15ae0fcc078c97db00086de

SHA512
e7ccf1a3fdbafc310ef63f943e448d2375bea2ba3a2fe40da040411161f3790686dd87911f6434f935c6eb0b0ab3aa491d8ffbc7d61fc8777c05300950bdc128

Download Submit
memory/4736-6-0x000002AC77480000-0x000002AC77496000-memory.dmp

Filesize
88KB

Download
memory/4736-3-0x000002AC76C00000-0x000002AC76C1A000-memory.dmp

Filesize
104KB

Download
memory/4736-4-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-5-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-0-0x00007FFCD91D3000-0x00007FFCD91D5000-memory.dmp

Filesize
8KB

Download
memory/4736-7-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-8-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-14-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-15-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/4736-2-0x000002AC76B60000-0x000002AC76B68000-memory.dmp

Filesize
32KB

Download
memory/4736-1-0x000002AC74FE0000-0x000002AC7500E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads