asyncrat | 5b1a883fc342ab1654912c119190f04771ae47477f1a006b932150129675134c

Analysis

max time kernel
139s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:09

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General

Target

394f64ff5b12eab1067babefe641f23e.exe
Size

63KB
MD5

394f64ff5b12eab1067babefe641f23e
SHA1

204a1a4572c5545afd99b61a87174ca83596c0b8
SHA256

776e0900fa622854f9e032773e373017b9cd9d814e19703ad6f366c53fe0aa77
SHA512

a8dca3a1e3e0e4faefc678fbfb0def4588f111865669cd63f9c77f02658f9fedcc9c31e1b56f84429a459a02fecb606a7b43519e0472c27d72c3cf1136a1e60d
SSDEEP

1536:ghYRpM16zMsN2eeiIVrGbbXwz+rYNDwGWDpqKmY7:ghYRpM16/NveXGbbXyTIgz

Score

10^/10

asyncrat venom clients rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

127.0.0.1:5050

127.0.0.1:3368

147.185.221.27:5050

147.185.221.27:3368

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
install
true
install_file
Update.exe
install_folder
%Temp%

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
behavioral23/files/0x0009000000017481-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2764	Update.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

defense_evasion

pid	Process
1920	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
2748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2516	394f64ff5b12eab1067babefe641f23e.exe
2516	394f64ff5b12eab1067babefe641f23e.exe
2516	394f64ff5b12eab1067babefe641f23e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	394f64ff5b12eab1067babefe641f23e.exe
Token: SeDebugPrivilege	2764	Update.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2084	2516	394f64ff5b12eab1067babefe641f23e.exe	30
PID 2516 wrote to memory of 2084	2516	394f64ff5b12eab1067babefe641f23e.exe	30
PID 2516 wrote to memory of 2084	2516	394f64ff5b12eab1067babefe641f23e.exe	30
PID 2516 wrote to memory of 2056	2516	394f64ff5b12eab1067babefe641f23e.exe	32
PID 2516 wrote to memory of 2056	2516	394f64ff5b12eab1067babefe641f23e.exe	32
PID 2516 wrote to memory of 2056	2516	394f64ff5b12eab1067babefe641f23e.exe	32
PID 2084 wrote to memory of 2748	2084	cmd.exe	33
PID 2084 wrote to memory of 2748	2084	cmd.exe	33
PID 2084 wrote to memory of 2748	2084	cmd.exe	33
PID 2056 wrote to memory of 1920	2056	cmd.exe	35
PID 2056 wrote to memory of 1920	2056	cmd.exe	35
PID 2056 wrote to memory of 1920	2056	cmd.exe	35
PID 2056 wrote to memory of 2764	2056	cmd.exe	36
PID 2056 wrote to memory of 2764	2056	cmd.exe	36
PID 2056 wrote to memory of 2764	2056	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\394f64ff5b12eab1067babefe641f23e.exe
"C:\Users\Admin\AppData\Local\Temp\394f64ff5b12eab1067babefe641f23e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Update" /tr '"C:\Users\Admin\AppData\Local\Temp\Update.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Update" /tr '"C:\Users\Admin\AppData\Local\Temp\Update.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2748
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB3C5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2056
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1920
- - C:\Users\Admin\AppData\Local\Temp\Update.exe
    "C:\Users\Admin\AppData\Local\Temp\Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2764

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\Update.exe

Filesize
63KB

MD5
394f64ff5b12eab1067babefe641f23e

SHA1
204a1a4572c5545afd99b61a87174ca83596c0b8

SHA256
776e0900fa622854f9e032773e373017b9cd9d814e19703ad6f366c53fe0aa77

SHA512
a8dca3a1e3e0e4faefc678fbfb0def4588f111865669cd63f9c77f02658f9fedcc9c31e1b56f84429a459a02fecb606a7b43519e0472c27d72c3cf1136a1e60d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB3C5.tmp.bat

Filesize
153B

MD5
b19fe052d4092792dbf64c18ee730fc0

SHA1
93df3519f1d0d35577979697d87d4bf1cf3ac520

SHA256
eb51bb7b58ec5c38799d3df1f6a4cdfab995ec26e73a972ae7ca9947a1390593

SHA512
a3a112d476f8422a103db18ffaad7a27e4eb4b4bbd41a5a14cf16a3b946a2323bb554c5702dd010d744526581043c7ad5400bf4daf85c0d8b829bc51a35956fa

Download Submit
memory/2516-0-0x000007FEF5393000-0x000007FEF5394000-memory.dmp

Filesize
4KB

Download
memory/2516-1-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/2516-2-0x000007FEF5390000-0x000007FEF5D7C000-memory.dmp

Filesize
9.9MB

Download
memory/2516-13-0x000007FEF5390000-0x000007FEF5D7C000-memory.dmp

Filesize
9.9MB

Download
memory/2516-4-0x000007FEF5390000-0x000007FEF5D7C000-memory.dmp

Filesize
9.9MB

Download
memory/2764-17-0x0000000000D40000-0x0000000000D56000-memory.dmp

Filesize
88KB

Download