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 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2688-7-0x0000000000CE0000-0x0000000000CF6000-memory.dmp	family_asyncrat
behavioral1/memory/2620-28-0x00000000006B0000-0x00000000006C6000-memory.dmp	family_asyncrat
behavioral1/memory/2620-29-0x00000000006B0000-0x00000000006C6000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2620	Runtime Broker.exe

Loads dropped DLL 1 IoCs

pid	Process
2780	cmd.exe

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

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com
6	7.tcp.eu.ngrok.io
17	7.tcp.eu.ngrok.io
28	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
2604	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
2784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2688	script_rust Autogun.exe
2688	script_rust Autogun.exe
2688	script_rust Autogun.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	script_rust Autogun.exe
Token: SeDebugPrivilege	2688	script_rust Autogun.exe
Token: SeDebugPrivilege	2620	Runtime Broker.exe
Token: SeDebugPrivilege	2620	Runtime Broker.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2692	2688	script_rust Autogun.exe	30
PID 2688 wrote to memory of 2692	2688	script_rust Autogun.exe	30
PID 2688 wrote to memory of 2692	2688	script_rust Autogun.exe	30
PID 2688 wrote to memory of 2780	2688	script_rust Autogun.exe	31
PID 2688 wrote to memory of 2780	2688	script_rust Autogun.exe	31
PID 2688 wrote to memory of 2780	2688	script_rust Autogun.exe	31
PID 2780 wrote to memory of 2604	2780	cmd.exe	34
PID 2780 wrote to memory of 2604	2780	cmd.exe	34
PID 2780 wrote to memory of 2604	2780	cmd.exe	34
PID 2692 wrote to memory of 2784	2692	cmd.exe	35
PID 2692 wrote to memory of 2784	2692	cmd.exe	35
PID 2692 wrote to memory of 2784	2692	cmd.exe	35
PID 2780 wrote to memory of 2620	2780	cmd.exe	36
PID 2780 wrote to memory of 2620	2780	cmd.exe	36
PID 2780 wrote to memory of 2620	2780	cmd.exe	36

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2688
- 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:2692
- - 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:2784
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5CD0.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2604
- - 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:2620

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5CD0.tmp.bat

Filesize
161B

MD5
4a684fe158cd090bfa224796643ce998

SHA1
71b1071823244348c2ab32f357830b2dee0ca424

SHA256
b8ced8ef00aadf69db5506aeec2f98f8f82eee1f16b44f8b3368f85228251860

SHA512
385def05acb29418b55c2df2a4d7b5eea544e90ab8644155940b75bfcc562f3a3c080b161153b9df738e0919fc38ff1c1af20faf0e344fdd1c2b7419e32af14e

Download Submit
\Users\Admin\AppData\Local\Temp\Runtime Broker.exe

Filesize
158KB

MD5
e2a386c9361821a799e06ec0d2bd00d4

SHA1
8c021c9435c6dd9afa0fc831f6d678c070fa569b

SHA256
ad09b83fa9f8d736fad4a986c8163715d5527610929d9f0f7afd1db28824288c

SHA512
246154bf280f4d92c1f61fc5705e4258a82602f566135caec6e54e6e531215f3aac51470cd3e58a69e6eea0d0b9595c180c5db9b90ebd2616c9aca3ed4f3f9fc

Download Submit
memory/2620-29-0x00000000006B0000-0x00000000006C6000-memory.dmp

Filesize
88KB

Download
memory/2620-28-0x00000000006B0000-0x00000000006C6000-memory.dmp

Filesize
88KB

Download
memory/2620-26-0x0000000000DC0000-0x0000000000DEE000-memory.dmp

Filesize
184KB

Download
memory/2688-8-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-6-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-7-0x0000000000CE0000-0x0000000000CF6000-memory.dmp

Filesize
88KB

Download
memory/2688-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2688-9-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-10-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-5-0x0000000000C80000-0x0000000000C9A000-memory.dmp

Filesize
104KB

Download
memory/2688-20-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-4-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-3-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-2-0x0000000000C70000-0x0000000000C78000-memory.dmp

Filesize
32KB

Download
memory/2688-1-0x0000000000D00000-0x0000000000D2E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads