asyncrat | e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d

Analysis

max time kernel
150s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 19:05

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General

Target

e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
Size

74KB
MD5

483ea502e0c3fa73f8384ece68e0cfc0
SHA1

a01d7e6ced28a41e03c4aa651ce68c9e855a0489
SHA256

e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d
SHA512

8d610258c0b1e953bb1b22cf39bce267875e76039ff8ec13221ea236c48e2c88e275e650e8ec323ae107b6435d34ea60f3760dcc81761a59a266d34b5e0360a0
SSDEEP

1536:FUSwcxea0CTmPMVWe9VdQuDI6H1bf/DEhQzcKLVclN:FUTcxeFImPMVWe9VdQsH1bfrEhQ7BY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

127.0.0.1:4449

127.0.0.1:0

85.105.91.170:4449

85.105.91.170:0

Mutex

magtzafsfzjwekrq

Attributes

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

aes.plain

Signatures

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

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/4940-1-0x0000000000BC0000-0x0000000000BD8000-memory.dmp	VenomRAT
behavioral2/files/0x000400000001da42-12.dat	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000400000001da42-12.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe

Executes dropped EXE 1 IoCs

pid	Process
2360	aa.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
1616	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
2636	schtasks.exe

Suspicious behavior: EnumeratesProcesses 59 IoCs

pid	Process
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe
2360	aa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
Token: SeDebugPrivilege	2360	aa.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2360	aa.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 4668	4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe	87
PID 4940 wrote to memory of 4668	4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe	87
PID 4940 wrote to memory of 3152	4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe	88
PID 4940 wrote to memory of 3152	4940	e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe	88
PID 3152 wrote to memory of 1616	3152	cmd.exe	92
PID 3152 wrote to memory of 1616	3152	cmd.exe	92
PID 4668 wrote to memory of 2636	4668	cmd.exe	93
PID 4668 wrote to memory of 2636	4668	cmd.exe	93
PID 3152 wrote to memory of 2360	3152	cmd.exe	96
PID 3152 wrote to memory of 2360	3152	cmd.exe	96

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\e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe
"C:\Users\Admin\AppData\Local\Temp\e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4668
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2636
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8964.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3152
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1616
- - C:\Users\Admin\AppData\Roaming\aa.exe
    "C:\Users\Admin\AppData\Roaming\aa.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2360

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\tmp8964.tmp.bat

Filesize
146B

MD5
24c72b7cedf4177205cf6f0645d6ae6e

SHA1
bc9f239a12eb2ee960bd233a16cffe4e588f3a50

SHA256
019b763dd03090184313476e079f187df389547cda35e952deaab6358d12d20e

SHA512
84f344989b9918ff794fd4ceabbde6c303cf01efb638750305d8a8ed2d747ef822755463a2d3afabd4e79f6b72a9dbc0bf894089d11ef9213a874fb7fc4f8be3

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\aa.exe

Filesize
74KB

MD5
483ea502e0c3fa73f8384ece68e0cfc0

SHA1
a01d7e6ced28a41e03c4aa651ce68c9e855a0489

SHA256
e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d

SHA512
8d610258c0b1e953bb1b22cf39bce267875e76039ff8ec13221ea236c48e2c88e275e650e8ec323ae107b6435d34ea60f3760dcc81761a59a266d34b5e0360a0

Download Submit
memory/4940-0-0x00007FFAB0F33000-0x00007FFAB0F35000-memory.dmp

Filesize
8KB

Download
memory/4940-1-0x0000000000BC0000-0x0000000000BD8000-memory.dmp

Filesize
96KB

Download
memory/4940-3-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-8-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-9-0x00007FFAB0F30000-0x00007FFAB19F1000-memory.dmp

Filesize
10.8MB

Download