asyncrat | 1c06c3a8b59c5fbe1ffa91f8bc75191fffc8e0f0281ee4ca7899e20e3b6abfb6

General

Target

Venom Client/Venom.exe
Size

74KB
MD5

c745590f5b7590f217bb204d27e91a00
SHA1

9d60ffc369b1fbdae8549b859729f47477658ddd
SHA256

dfb98932671339fb633c74180dba3810d9382e56618d75b3f67ae2ba3206aa1d
SHA512

5c6082eb180abeceda71ac259f9fef4bd90b47e3d2adf05280f7e0a3e3b6bed1508a0e09d6f5bcbcc7bfa868b0fc2fd9ff00dab7121baa778e575eed32dddaf3
SSDEEP

1536:ZUNwcxbUTCrmPMVIEh3kLuaIsH1bTc6yOQzc2LVclN:ZUicxbgwmPMVffAH1bTVQPBY

Score

10^/10

asyncrat venomrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

wgzvrzpksxgiaglrvq

Attributes

c2_url_file
https://paste.ee/r/Wp7LQ/0
delay
1
install
true
install_file
System.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 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2308-1-0x0000000001370000-0x0000000001388000-memory.dmp	VenomRAT
behavioral1/memory/2976-18-0x0000000000AA0000-0x0000000000AB8000-memory.dmp	VenomRAT
behavioral1/files/0x0009000000015d68-17.dat	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0009000000015d68-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2976	System.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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
2728	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
2112	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2308	Venom.exe
2308	Venom.exe
2308	Venom.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe
2976	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	Venom.exe
Token: SeDebugPrivilege	2976	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2976	System.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2076	2308	Venom.exe	31
PID 2308 wrote to memory of 2076	2308	Venom.exe	31
PID 2308 wrote to memory of 2076	2308	Venom.exe	31
PID 2308 wrote to memory of 2388	2308	Venom.exe	32
PID 2308 wrote to memory of 2388	2308	Venom.exe	32
PID 2308 wrote to memory of 2388	2308	Venom.exe	32
PID 2076 wrote to memory of 2112	2076	cmd.exe	36
PID 2076 wrote to memory of 2112	2076	cmd.exe	36
PID 2076 wrote to memory of 2112	2076	cmd.exe	36
PID 2388 wrote to memory of 2728	2388	cmd.exe	35
PID 2388 wrote to memory of 2728	2388	cmd.exe	35
PID 2388 wrote to memory of 2728	2388	cmd.exe	35
PID 2388 wrote to memory of 2976	2388	cmd.exe	37
PID 2388 wrote to memory of 2976	2388	cmd.exe	37
PID 2388 wrote to memory of 2976	2388	cmd.exe	37

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\Venom Client\Venom.exe
"C:\Users\Admin\AppData\Local\Temp\Venom Client\Venom.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2112
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD5D5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2728
- - C:\Users\Admin\AppData\Roaming\System.exe
    "C:\Users\Admin\AppData\Roaming\System.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabF6DF.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar9B6.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD5D5.tmp.bat

Filesize
150B

MD5
c31134246fd64a2a89ed09212dadc869

SHA1
8fcfc50a78841df2db333cbdfb0d83594d942f2f

SHA256
82850cc7129372f1e831e9b25e7f670cbaa6ad6a8ac92f0a3174b306492b7ddf

SHA512
6590f3d3bc1f84718094b03fadb0a1d2c6e52a68c243d4476fe0e9fffc3248aba10e1311ff2ae6ddd1fa4a3d77bfcea364b9a7fc44fc850be3feb4507786ff7d

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\System.exe

Filesize
74KB

MD5
c745590f5b7590f217bb204d27e91a00

SHA1
9d60ffc369b1fbdae8549b859729f47477658ddd

SHA256
dfb98932671339fb633c74180dba3810d9382e56618d75b3f67ae2ba3206aa1d

SHA512
5c6082eb180abeceda71ac259f9fef4bd90b47e3d2adf05280f7e0a3e3b6bed1508a0e09d6f5bcbcc7bfa868b0fc2fd9ff00dab7121baa778e575eed32dddaf3

Download Submit
memory/2308-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2308-1-0x0000000001370000-0x0000000001388000-memory.dmp

Filesize
96KB

Download
memory/2308-3-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-11-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-14-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-18-0x0000000000AA0000-0x0000000000AB8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads