asyncrat | 8ef32b44cf21b690415e603eb6889c8c2e9294e76028b9dbd4c20a23077167f8

General

Target

Client.exe
Size

47KB
MD5

8a0bb8ae35abf7a92325e632a5a3adc0
SHA1

0042da0ec0b6f9c32a06becc845e0591870e410c
SHA256

8ef32b44cf21b690415e603eb6889c8c2e9294e76028b9dbd4c20a23077167f8
SHA512

ef89ad0def338bfab7e8fe435b1c964e62c56d0589721dda750e72b861492c6bccef7be95190b9df974e3bbfeda3e3f421eedb3d673cd45a7f3c5ce52b4a2fd4
SSDEEP

768:boq0GnILSC+e+biNtelDSN+iV08YbygeXFa3ZzvEgK/JDZVc6KN:cqTyNtKDs4zb18eZznkJDZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

tax-sri.gl.at.ply.gg:5353

tax-sri.gl.at.ply.gg:9388

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
..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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000b0000000122cf-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1352	..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
2736	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
1340	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2848	Client.exe
2848	Client.exe
2848	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	Client.exe
Token: SeDebugPrivilege	1352	..exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2696	2848	Client.exe	31
PID 2848 wrote to memory of 2696	2848	Client.exe	31
PID 2848 wrote to memory of 2696	2848	Client.exe	31
PID 2848 wrote to memory of 2700	2848	Client.exe	33
PID 2848 wrote to memory of 2700	2848	Client.exe	33
PID 2848 wrote to memory of 2700	2848	Client.exe	33
PID 2696 wrote to memory of 1340	2696	cmd.exe	35
PID 2696 wrote to memory of 1340	2696	cmd.exe	35
PID 2696 wrote to memory of 1340	2696	cmd.exe	35
PID 2700 wrote to memory of 2736	2700	cmd.exe	36
PID 2700 wrote to memory of 2736	2700	cmd.exe	36
PID 2700 wrote to memory of 2736	2700	cmd.exe	36
PID 2700 wrote to memory of 1352	2700	cmd.exe	37
PID 2700 wrote to memory of 1352	2700	cmd.exe	37
PID 2700 wrote to memory of 1352	2700	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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "." /tr '"C:\Users\Admin\AppData\Roaming\..exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "." /tr '"C:\Users\Admin\AppData\Roaming\..exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1340
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF9AA.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2736
- - C:\Users\Admin\AppData\Roaming\..exe
    "C:\Users\Admin\AppData\Roaming\..exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1352

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\tmpF9AA.tmp.bat

Filesize
145B

MD5
3734779547fcf50f70ccca314f171f5e

SHA1
038123e239a91c1b78b88f0734dab6395471c65b

SHA256
0180d7d285ac899e526af76415c04deb3ed172c54b56079bbf96fd4ff40a87ba

SHA512
b95e92935fa33d53671c73824c053d064921f0c848fd568e1cd4da70bc773c1cbfcfd1d04935896610e311ebc47b89002aa2c40f061613fd7ab98f792817b96c

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

Filesize
47KB

MD5
8a0bb8ae35abf7a92325e632a5a3adc0

SHA1
0042da0ec0b6f9c32a06becc845e0591870e410c

SHA256
8ef32b44cf21b690415e603eb6889c8c2e9294e76028b9dbd4c20a23077167f8

SHA512
ef89ad0def338bfab7e8fe435b1c964e62c56d0589721dda750e72b861492c6bccef7be95190b9df974e3bbfeda3e3f421eedb3d673cd45a7f3c5ce52b4a2fd4

Download Submit
memory/1352-16-0x0000000000E20000-0x0000000000E32000-memory.dmp

Filesize
72KB

Download
memory/2848-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2848-1-0x0000000001060000-0x0000000001072000-memory.dmp

Filesize
72KB

Download
memory/2848-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-11-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads