asyncrat | 28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148

Analysis

max time kernel
117s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 17:14

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General

Target

28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
Size

74KB
MD5

4699152c9c6718bfd6ecbdc0c7cc53af
SHA1

104f5583bc2709197ef929ddc5bbe16f08ee0229
SHA256

28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148
SHA512

3d2d6910b903caf50b59191eb2b33a01f41d55212431d9aa0009e63e2361259a12552bb5b9a6cf17d79c56fb5e0f0444fc249fb0dadf79bd76d9b912b893ac32
SSDEEP

1536:eUYNwcxKHXwzCtmPMV3JSaGLm43XHIls1bP/7jnQzcyLVclNv:eUYicxK8WmPMV3wDn4s1bPTbQjBYN

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

127.0.0.1:9999

Mutex

ytgjjhywchk

Attributes

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

aes.plain

Signatures

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

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/2656-1-0x0000000000460000-0x0000000000478000-memory.dmp	VenomRAT
behavioral2/files/0x0008000000023c9f-12.dat	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000023c9f-12.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe

Executes dropped EXE 1 IoCs

pid	Process
756	RealtekHighDefinitionAudio.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
1696	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
5000	schtasks.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe
756	RealtekHighDefinitionAudio.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
Token: SeDebugPrivilege	756	RealtekHighDefinitionAudio.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
756	RealtekHighDefinitionAudio.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 3604	2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe	83
PID 2656 wrote to memory of 3604	2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe	83
PID 2656 wrote to memory of 1752	2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe	84
PID 2656 wrote to memory of 1752	2656	28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe	84
PID 3604 wrote to memory of 5000	3604	cmd.exe	87
PID 3604 wrote to memory of 5000	3604	cmd.exe	87
PID 1752 wrote to memory of 1696	1752	cmd.exe	88
PID 1752 wrote to memory of 1696	1752	cmd.exe	88
PID 1752 wrote to memory of 756	1752	cmd.exe	90
PID 1752 wrote to memory of 756	1752	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\28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe
"C:\Users\Admin\AppData\Local\Temp\28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3604
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5000
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA6FE.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1752
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1696
- - C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe
    "C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:756

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\tmpA6FE.tmp.bat

Filesize
170B

MD5
0acc53b48cb7dbdcb8ae6e60a92c3638

SHA1
3f9e05b8779a00d1ef8ede97229fd401b7619a27

SHA256
6dc107fb774bef3996dae6a5c88fc3c2d24349576639a3636dc2dac3536aac3e

SHA512
91a4f89f86dd07994ee35ce49631123fe57c22fa4e5e959e4c3051a09d2d1fbece84ca591533decd28ca2a435952f35818414fb6b1e563144212853996d59872

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe

Filesize
74KB

MD5
4699152c9c6718bfd6ecbdc0c7cc53af

SHA1
104f5583bc2709197ef929ddc5bbe16f08ee0229

SHA256
28b1a7f0f1af2cf9f5529390afae54f9858b50a88f0154896e14b74fd5c7e148

SHA512
3d2d6910b903caf50b59191eb2b33a01f41d55212431d9aa0009e63e2361259a12552bb5b9a6cf17d79c56fb5e0f0444fc249fb0dadf79bd76d9b912b893ac32

Download Submit
memory/2656-0-0x00007FFB8A063000-0x00007FFB8A065000-memory.dmp

Filesize
8KB

Download
memory/2656-1-0x0000000000460000-0x0000000000478000-memory.dmp

Filesize
96KB

Download
memory/2656-3-0x00007FFB8A060000-0x00007FFB8AB21000-memory.dmp

Filesize
10.8MB

Download
memory/2656-8-0x00007FFB8A060000-0x00007FFB8AB21000-memory.dmp

Filesize
10.8MB

Download
memory/2656-9-0x00007FFB8A060000-0x00007FFB8AB21000-memory.dmp

Filesize
10.8MB

Download