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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\..exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

..exe

pid process

2952 ..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

Processes:

timeout.exe

pid process

2812 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

Processes:

schtasks.exe

pid process

2960 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Client.exe

pid process

2320 Client.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client.exe..exe

description pid process

Token: SeDebugPrivilege 2320 Client.exe
Token: SeDebugPrivilege 2952 ..exe

pid	process
2952	..exe

pid	process
2812	timeout.exe

pid	process
2960	schtasks.exe

pid	process
2320	Client.exe

description	pid	process
Token: SeDebugPrivilege	2320	Client.exe
Token: SeDebugPrivilege	2952	..exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Client.execmd.execmd.exe

description	pid	process	target process
PID 2320 wrote to memory of 2296	2320	Client.exe	cmd.exe
PID 2320 wrote to memory of 2296	2320	Client.exe	cmd.exe
PID 2320 wrote to memory of 2296	2320	Client.exe	cmd.exe
PID 2320 wrote to memory of 2808	2320	Client.exe	cmd.exe
PID 2320 wrote to memory of 2808	2320	Client.exe	cmd.exe
PID 2320 wrote to memory of 2808	2320	Client.exe	cmd.exe
PID 2296 wrote to memory of 2960	2296	cmd.exe	schtasks.exe
PID 2296 wrote to memory of 2960	2296	cmd.exe	schtasks.exe
PID 2296 wrote to memory of 2960	2296	cmd.exe	schtasks.exe
PID 2808 wrote to memory of 2812	2808	cmd.exe	timeout.exe
PID 2808 wrote to memory of 2812	2808	cmd.exe	timeout.exe
PID 2808 wrote to memory of 2812	2808	cmd.exe	timeout.exe
PID 2808 wrote to memory of 2952	2808	cmd.exe	..exe
PID 2808 wrote to memory of 2952	2808	cmd.exe	..exe
PID 2808 wrote to memory of 2952	2808	cmd.exe	..exe

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:2320
- 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:2296
- - 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:2960
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD1B.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2812
- - C:\Users\Admin\AppData\Roaming\..exe
    "C:\Users\Admin\AppData\Roaming\..exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2952

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\tmpD1B.tmp.bat

Filesize
144B

MD5
bf227b43fd5852733047afbeec0ce545

SHA1
6e312d63a9c394d422343de4908055056cc1b7df

SHA256
fbf53100a49c3ff2e6da6db32a34d7867f61f803f53f5d7455913678577a6ce1

SHA512
8aec0348169204b9344ab3c3aa8a2d4a9e5ad13f1b15fc8d1f2eb8a3d78ea8def2a4948af2c3072887799c0638110ae5a230ea35cb6d28faf98ec76edd259784

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

Filesize
47KB

MD5
8a0bb8ae35abf7a92325e632a5a3adc0

SHA1
0042da0ec0b6f9c32a06becc845e0591870e410c

SHA256
8ef32b44cf21b690415e603eb6889c8c2e9294e76028b9dbd4c20a23077167f8

SHA512
ef89ad0def338bfab7e8fe435b1c964e62c56d0589721dda750e72b861492c6bccef7be95190b9df974e3bbfeda3e3f421eedb3d673cd45a7f3c5ce52b4a2fd4

Download Submit
memory/2320-0-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

Filesize
4KB

Download
memory/2320-1-0x00000000002C0000-0x00000000002D2000-memory.dmp

Filesize
72KB

Download
memory/2320-2-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2320-12-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2952-16-0x0000000000CB0000-0x0000000000CC2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads