asyncrat | 89acdbc8fdf507d3989f490932f2a8084c144f9c00628962c7f8241cad3f6c57

Analysis

max time kernel
150s
max time network
139s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 21:40

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General

Target

8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
Size

88KB
MD5

9d321e5bd15e7cb61d8fd256274caef2
SHA1

adcd6d4792a93023971a4ad137ca61a71b2e30b3
SHA256

8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049
SHA512

073baca9e7f936d3932ef0788c605cbec62aebfc2d78a6febcc316d3912df582d1aeafb66dfa41500345f4a0fe1478631867c22c454e7841956a97e93517130b
SSDEEP

1536:V5UFAcxqXPC/2PMVCe9VdQuDI6H1bf/EFOQzciu88uA9fKlA/LVclN:rUacxqfs2PMVCe9VdQsH1bfcFOQa88u7

Score

10^/10

asyncrat venomrat 2023 rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

2023

Mutex

2023

Attributes

delay
1
install
true
install_file
2023.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/X5LTTgNb

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2440-1-0x0000000001290000-0x00000000012AC000-memory.dmp	VenomRAT
behavioral1/files/0x002f000000017530-16.dat	VenomRAT
behavioral1/memory/3028-18-0x0000000000F00000-0x0000000000F1C000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x002f000000017530-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3028	2023.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2872	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
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe
3028	2023.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
Token: SeDebugPrivilege	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
Token: SeDebugPrivilege	3028	2023.exe
Token: SeDebugPrivilege	3028	2023.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3028	2023.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1780	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	30
PID 2440 wrote to memory of 1780	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	30
PID 2440 wrote to memory of 1780	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	30
PID 2440 wrote to memory of 2884	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	31
PID 2440 wrote to memory of 2884	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	31
PID 2440 wrote to memory of 2884	2440	8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe	31
PID 1780 wrote to memory of 2880	1780	cmd.exe	34
PID 1780 wrote to memory of 2880	1780	cmd.exe	34
PID 1780 wrote to memory of 2880	1780	cmd.exe	34
PID 2884 wrote to memory of 2872	2884	cmd.exe	35
PID 2884 wrote to memory of 2872	2884	cmd.exe	35
PID 2884 wrote to memory of 2872	2884	cmd.exe	35
PID 2884 wrote to memory of 3028	2884	cmd.exe	36
PID 2884 wrote to memory of 3028	2884	cmd.exe	36
PID 2884 wrote to memory of 3028	2884	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\8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe
"C:\Users\Admin\AppData\Local\Temp\8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "2023" /tr '"C:\Users\Admin\AppData\Roaming\2023.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "2023" /tr '"C:\Users\Admin\AppData\Roaming\2023.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2880
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp816F.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2872
- - C:\Users\Admin\AppData\Roaming\2023.exe
    "C:\Users\Admin\AppData\Roaming\2023.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3028

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

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp816F.tmp.bat

Filesize
148B

MD5
de82698f9ceeea86c86f1d8a334a973a

SHA1
c99f3b03a5c473cc468f5f8806731e4645b160a4

SHA256
e64a9867f01f51b40b5ed33c933d666b3e1134d429374631d498e263995c4693

SHA512
0ed80200397d178a29cbecb810e49fa6c2c7ed817a76cc0fec220295839b48e4015269a82a80e32ea8d521b799ef0aef061a2f50d31ada1a8696874d64252aeb

Download Submit
C:\Users\Admin\AppData\Roaming\2023.exe

Filesize
88KB

MD5
9d321e5bd15e7cb61d8fd256274caef2

SHA1
adcd6d4792a93023971a4ad137ca61a71b2e30b3

SHA256
8c9e60c37d9052d42f46e6eb364811d6c02f7478f9049be97979104f40a52049

SHA512
073baca9e7f936d3932ef0788c605cbec62aebfc2d78a6febcc316d3912df582d1aeafb66dfa41500345f4a0fe1478631867c22c454e7841956a97e93517130b

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2440-0-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

Filesize
4KB

Download
memory/2440-1-0x0000000001290000-0x00000000012AC000-memory.dmp

Filesize
112KB

Download
memory/2440-3-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2440-11-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2440-13-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/3028-18-0x0000000000F00000-0x0000000000F1C000-memory.dmp

Filesize
112KB

Download