asyncrat | 729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
28/07/2024, 23:52

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General

Target
729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Size 63KB
Sample240728-3w1ctawerc
SHA256 729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30
MD5 0ac4039b1060355d3408ad727a6127be
SHA1 a2cad20ee53c6fb731b9052bc7a9d1745f0ee1a8
SHA512 cf9ce5f07d862438d11ed6a13730be7a90dd525fc0331b3532f3a757801ecbc5adb020f9882108e8f80c2ae0c087cd52d8aaff19114e133c5c6919b67358da54
SSDEEP 768:muY6LVcsTPq781wC8A+Xju8Z4gdKmDrRHsL1+T4tSNGHmDbDdph0oXGkLnTSuIdP:HeQPc/ymDrRH8iUUbXh9/2uIdpqKmY7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

192.168.1.108:2024

Attributes

delay
1
install
true
install_file
OperaGx.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000b000000023422-11.dat	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-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe

Executes dropped EXE 1 IoCs

pid	Process
2128	OperaGx.exe

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
4020	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
3472	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe
2128	OperaGx.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Token: SeDebugPrivilege	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
Token: SeDebugPrivilege	2128	OperaGx.exe
Token: SeDebugPrivilege	2128	OperaGx.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 2364	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	89
PID 4364 wrote to memory of 2364	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	89
PID 4364 wrote to memory of 3660	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	91
PID 4364 wrote to memory of 3660	4364	729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe	91
PID 2364 wrote to memory of 3472	2364	cmd.exe	93
PID 2364 wrote to memory of 3472	2364	cmd.exe	93
PID 3660 wrote to memory of 4020	3660	cmd.exe	94
PID 3660 wrote to memory of 4020	3660	cmd.exe	94
PID 3660 wrote to memory of 2128	3660	cmd.exe	98
PID 3660 wrote to memory of 2128	3660	cmd.exe	98

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\729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe
"C:\Users\Admin\AppData\Local\Temp\729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "OperaGx" /tr '"C:\Users\Admin\AppData\Roaming\OperaGx.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "OperaGx" /tr '"C:\Users\Admin\AppData\Roaming\OperaGx.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3472
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE5EB.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3660
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4020
- - C:\Users\Admin\AppData\Roaming\OperaGx.exe
    "C:\Users\Admin\AppData\Roaming\OperaGx.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpE5EB.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpE5EB.tmp.bat
Size 151B
SHA256 9606b01b346e75e6ca60362864492a9ceb56457f6b0758a87c5299f05ddfbf01
MD5 1d0c667039e4e4ddbc143c72878bbd40
SHA1 97b2ca89cbdc2b47e0d8b33f2f0d0f8fc3952996
SHA512 c538d757a47b807504bd7bc1b1deb04e7b440d5f961cabbf015d2946c4f820f1b265b035853eb80a121bfdd47c4d93f7ebbbfd6f34fb6aed79d3b47bcc4f03aa
MD5 SHA1 SHA512

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OperaGx.exe

Path C:\Users\Admin\AppData\Roaming\OperaGx.exe
Size 63KB
SHA256 729d6539f4eae0ad9178d7a60b3d478780d8b68bde520d59311e87a4c5f7dc30
MD5 0ac4039b1060355d3408ad727a6127be
SHA1 a2cad20ee53c6fb731b9052bc7a9d1745f0ee1a8
SHA512 cf9ce5f07d862438d11ed6a13730be7a90dd525fc0331b3532f3a757801ecbc5adb020f9882108e8f80c2ae0c087cd52d8aaff19114e133c5c6919b67358da54
SSDEEP 768:muY6LVcsTPq781wC8A+Xju8Z4gdKmDrRHsL1+T4tSNGHmDbDdph0oXGkLnTSuIdP:HeQPc/ymDrRH8iUUbXh9/2uIdpqKmY7
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4364-0-0x0000000000060000-0x0000000000076000-memory.dmp

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memory/4364-1-0x00007FFC92123000-0x00007FFC92125000-memory.dmp

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memory/4364-2-0x00007FFC92120000-0x00007FFC92BE1000-memory.dmp

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memory/4364-7-0x00007FFC92120000-0x00007FFC92BE1000-memory.dmp

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memory/4364-8-0x00007FFC92120000-0x00007FFC92BE1000-memory.dmp

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memory/4364-13-0x00007FFC92120000-0x00007FFC92BE1000-memory.dmp

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