asyncrat | a1ab0b66e66d84c8687298d71c66e347ac8b22d8ba7b7aedec7867c54ed8a14e

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 03:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Fixer (1).exe
Size

63KB
MD5

1b13586a90a4197f78ae7fbbb62cd2c3
SHA1

b6c29b130e1c3d442e7850de3c5303284685c610
SHA256

a1ab0b66e66d84c8687298d71c66e347ac8b22d8ba7b7aedec7867c54ed8a14e
SHA512

97002dfd7f4a4b14e489f952f2802b04a1bf2938fb3870bf89dd2998fa56e4531717d117bf872e8d1f601bd6edeac59a73ee262fa3923ba1db8b5ff1541eccb9
SSDEEP

768:RdGnVhwdjndk78TQC8A+XiuazcBRL5JTk1+T4KSBGHmDbD/ph0oXpC4AdvCSuAdP:mnSdsNdSJYUbdh9ps1uAdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

associated-chevy.gl.at.ply.gg:46398

Attributes

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00080000000120ff-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1880	System.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
2136	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
2296	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2792	Fixer (1).exe
2792	Fixer (1).exe
2792	Fixer (1).exe
2792	Fixer (1).exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe
1880	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	Fixer (1).exe
Token: SeDebugPrivilege	1880	System.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2244	2792	Fixer (1).exe	29
PID 2792 wrote to memory of 2244	2792	Fixer (1).exe	29
PID 2792 wrote to memory of 2244	2792	Fixer (1).exe	29
PID 2792 wrote to memory of 1676	2792	Fixer (1).exe	31
PID 2792 wrote to memory of 1676	2792	Fixer (1).exe	31
PID 2792 wrote to memory of 1676	2792	Fixer (1).exe	31
PID 1676 wrote to memory of 2136	1676	cmd.exe	33
PID 1676 wrote to memory of 2136	1676	cmd.exe	33
PID 1676 wrote to memory of 2136	1676	cmd.exe	33
PID 2244 wrote to memory of 2296	2244	cmd.exe	34
PID 2244 wrote to memory of 2296	2244	cmd.exe	34
PID 2244 wrote to memory of 2296	2244	cmd.exe	34
PID 1676 wrote to memory of 1880	1676	cmd.exe	35
PID 1676 wrote to memory of 1880	1676	cmd.exe	35
PID 1676 wrote to memory of 1880	1676	cmd.exe	35

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\Fixer (1).exe
"C:\Users\Admin\AppData\Local\Temp\Fixer (1).exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792
- 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:2244
- - 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:2296
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp9157.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1676
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2136
- - 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
    PID:1880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Cab3BCA.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6B65.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9157.tmp.bat

Filesize
150B

MD5
807e929de73e6d93dc5fd584c70e110b

SHA1
ecc2aee8f7fbc84e64cded349151be44dd4ce00c

SHA256
422244daa06b2da3ced1e4ba12c7aef6adc0d362a28ea51b1ebc658d49397b6e

SHA512
3c1294f28bcba5c4d527c3f45ee81a877e55ceea9e82090a6dc8699666588628ed637038a78258a55c364f402aaca0393c69d20bc1f9c7b12209adb0d62cf426

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

Filesize
63KB

MD5
1b13586a90a4197f78ae7fbbb62cd2c3

SHA1
b6c29b130e1c3d442e7850de3c5303284685c610

SHA256
a1ab0b66e66d84c8687298d71c66e347ac8b22d8ba7b7aedec7867c54ed8a14e

SHA512
97002dfd7f4a4b14e489f952f2802b04a1bf2938fb3870bf89dd2998fa56e4531717d117bf872e8d1f601bd6edeac59a73ee262fa3923ba1db8b5ff1541eccb9

Download Submit
memory/1880-17-0x0000000000920000-0x0000000000936000-memory.dmp

Filesize
88KB

Download
memory/1880-34-0x0000000000460000-0x0000000000494000-memory.dmp

Filesize
208KB

Download
memory/2792-0-0x000007FEF5CC3000-0x000007FEF5CC4000-memory.dmp

Filesize
4KB

Download
memory/2792-1-0x0000000000D00000-0x0000000000D16000-memory.dmp

Filesize
88KB

Download
memory/2792-2-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/2792-3-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/2792-13-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download