asyncrat | c01d9f0b0e36df6209dd32216dc5c23732de1ee7c8c5d94532216d1725573ba5

Analysis

max time kernel
2s
max time network
6s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-12-2024 04:45

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General

Target

Client.exe
Size

73KB
MD5

f5f6281bdd8312649df47aa5ff51817b
SHA1

7dbfee0746f5fff27fe4aef4689655bb95ceec9b
SHA256

c01d9f0b0e36df6209dd32216dc5c23732de1ee7c8c5d94532216d1725573ba5
SHA512

5789255bd6d9252fff6b9aa4a3d83f8de3f75f289a1829678b6f425811491b1c6ff749600e5e115e3635105106307a41041aedbaa5bb10e4a7b998440b3fe9b0
SSDEEP

1536:YUN8cxQFvCr6PMVWe9VdQkhDIyH1bf/lOQzcX3VclN:YUOcxQxs6PMVWe9VdQgH1bfNOQilY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

homiplaglliddnwuc

Attributes

delay
1
install
true
install_file
Adobe Updater.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/8haaGvJp

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	Client.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
2824	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
3764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe
768	Client.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	Client.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 2140	768	Client.exe	85
PID 768 wrote to memory of 2140	768	Client.exe	85
PID 768 wrote to memory of 1896	768	Client.exe	87
PID 768 wrote to memory of 1896	768	Client.exe	87
PID 1896 wrote to memory of 2824	1896	cmd.exe	89
PID 1896 wrote to memory of 2824	1896	cmd.exe	89
PID 2140 wrote to memory of 3764	2140	cmd.exe	90
PID 2140 wrote to memory of 3764	2140	cmd.exe	90

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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Adobe Updater" /tr '"C:\Users\Admin\AppData\Roaming\Adobe Updater.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Adobe Updater" /tr '"C:\Users\Admin\AppData\Roaming\Adobe Updater.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3764
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2824

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

C:\Users\Admin\AppData\Local\Temp\tmpA921.tmp.bat

Filesize
157B

MD5
cb10df03dad7e596f529c07e4d266a05

SHA1
b797b6e8863fc8cc78414c1b885ffe3cfac17898

SHA256
c3b8b21b97a70dd8e98475be923dba376fca5c35e1aa66625e260d2d02dfe720

SHA512
f56d4a4c791299e331e1f80636a3faeb01f5ec39355d8ee2ca74c7d0651494019e1fc47581735ae5248efe3a6f71e4f7a735321a58d1a9e8186ba343f74435fc

Download Submit
memory/768-0-0x00007FFA08123000-0x00007FFA08125000-memory.dmp

Filesize
8KB

Download
memory/768-1-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/768-3-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/768-8-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download
memory/768-9-0x00007FFA08120000-0x00007FFA08BE1000-memory.dmp

Filesize
10.8MB

Download