asyncrat | f22ec9c2df8efd42827f0c23c3a47c5cd776e2213cad5f1e067c4f2e4ac0cebe

General

Target

Client.exe
Size

63KB
MD5

a8515eaaad39b50757b65dacd5c17042
SHA1

98bf1b3765448f24447bdcd4117e972fae8fe09e
SHA256

f22ec9c2df8efd42827f0c23c3a47c5cd776e2213cad5f1e067c4f2e4ac0cebe
SHA512

d35bc0179ef0a94fbe579fc4c2991a5a8e720eea2fc70d50a731d37b3934bc90214239339840fcfd82553d08ba54d22dc56d182902cead6d8a2692065a3cd667
SSDEEP

1536:QhW5hc1kw0kV7eeiIVrGbbXw5o6zUKGODpqKmY7:QhW5hc1kWVieXGbbX76w0gz

Score

10^/10

asyncrat venom clients rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

software-julia.gl.at.ply.gg:17106

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00070000000120f9-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2804	Windows.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
2240	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
2300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2260	Client.exe
2260	Client.exe
2260	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2260	Client.exe
Token: SeDebugPrivilege	2804	Windows.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2968	2260	Client.exe	30
PID 2260 wrote to memory of 2968	2260	Client.exe	30
PID 2260 wrote to memory of 2968	2260	Client.exe	30
PID 2260 wrote to memory of 2704	2260	Client.exe	32
PID 2260 wrote to memory of 2704	2260	Client.exe	32
PID 2260 wrote to memory of 2704	2260	Client.exe	32
PID 2968 wrote to memory of 2300	2968	cmd.exe	33
PID 2968 wrote to memory of 2300	2968	cmd.exe	33
PID 2968 wrote to memory of 2300	2968	cmd.exe	33
PID 2704 wrote to memory of 2240	2704	cmd.exe	35
PID 2704 wrote to memory of 2240	2704	cmd.exe	35
PID 2704 wrote to memory of 2240	2704	cmd.exe	35
PID 2704 wrote to memory of 2804	2704	cmd.exe	36
PID 2704 wrote to memory of 2804	2704	cmd.exe	36
PID 2704 wrote to memory of 2804	2704	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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2968
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2300
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4F77.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2240
- - C:\Users\Admin\AppData\Roaming\Windows.exe
    "C:\Users\Admin\AppData\Roaming\Windows.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2804

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

1

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\tmp4F77.tmp.bat

Filesize
151B

MD5
b8713d6c3a91a227e4a310fced5715ca

SHA1
cfc0165c1d4a5b56dd9884d1cb25eb1d2c3cebc4

SHA256
4cc57ab237c87b71081fbbcd8dc5aedf4f88cbdeba5c4f85b16c06512a05e732

SHA512
bf0e0501a69af8fcb3e570b6704afa4e3a0e9af2c5b8987b7937862dbcd0f6a922244e8c66fd3d1e338ac706005056493b1771108d65955bb00d5bfa60bc079b

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

Filesize
63KB

MD5
a8515eaaad39b50757b65dacd5c17042

SHA1
98bf1b3765448f24447bdcd4117e972fae8fe09e

SHA256
f22ec9c2df8efd42827f0c23c3a47c5cd776e2213cad5f1e067c4f2e4ac0cebe

SHA512
d35bc0179ef0a94fbe579fc4c2991a5a8e720eea2fc70d50a731d37b3934bc90214239339840fcfd82553d08ba54d22dc56d182902cead6d8a2692065a3cd667

Download Submit
memory/2260-0-0x000007FEF52E3000-0x000007FEF52E4000-memory.dmp

Filesize
4KB

Download
memory/2260-1-0x0000000000900000-0x0000000000916000-memory.dmp

Filesize
88KB

Download
memory/2260-2-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2260-3-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2260-12-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2804-17-0x00000000001B0000-0x00000000001C6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads