asyncrat | aca0856176e5bdbe4e93fb853855fe20b8317942910b5ac97b200575f0862fa9

General

Target

woofer.exe
Size

63KB
MD5

e15497d7443c2dee4cf4ae3bbbc344f9
SHA1

ed863f95cf9701ccde2db4119d65aa1bf1060b54
SHA256

aca0856176e5bdbe4e93fb853855fe20b8317942910b5ac97b200575f0862fa9
SHA512

1c6dedcbfc88ec03a8b6a7031e10381ec26eba0df7083a636555b28a752792c72774d5add0378e944f1d646d5abf7e328f57c19fe1ede5d87f04cad3b0f2ec5e
SSDEEP

768:Z951Fn3n9P78zQC8A+XvdvnOLJk7074EhfW1+T4OSBGHmDbDfphKoX55anSuMdph:RX9x6k7ScZYUbVhj5TuMdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

81.161.238.249:3232

Attributes

delay
1
install
true
install_file
BootComponent.exe
install_folder
%Temp%

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
behavioral1/files/0x000a00000001225f-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

BootComponent.exe

pid	Process
2716	BootComponent.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
2896	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
2348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

woofer.exe

pid	Process
2760	woofer.exe
2760	woofer.exe
2760	woofer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

woofer.exeBootComponent.exe

description	pid	Process
Token: SeDebugPrivilege	2760	woofer.exe
Token: SeDebugPrivilege	2716	BootComponent.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

woofer.execmd.execmd.exe

description	pid	Process	procid_target
PID 2760 wrote to memory of 2728	2760	woofer.exe	31
PID 2760 wrote to memory of 2728	2760	woofer.exe	31
PID 2760 wrote to memory of 2728	2760	woofer.exe	31
PID 2760 wrote to memory of 2764	2760	woofer.exe	33
PID 2760 wrote to memory of 2764	2760	woofer.exe	33
PID 2760 wrote to memory of 2764	2760	woofer.exe	33
PID 2764 wrote to memory of 2896	2764	cmd.exe	35
PID 2764 wrote to memory of 2896	2764	cmd.exe	35
PID 2764 wrote to memory of 2896	2764	cmd.exe	35
PID 2728 wrote to memory of 2348	2728	cmd.exe	36
PID 2728 wrote to memory of 2348	2728	cmd.exe	36
PID 2728 wrote to memory of 2348	2728	cmd.exe	36
PID 2764 wrote to memory of 2716	2764	cmd.exe	37
PID 2764 wrote to memory of 2716	2764	cmd.exe	37
PID 2764 wrote to memory of 2716	2764	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\woofer.exe
"C:\Users\Admin\AppData\Local\Temp\woofer.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "BootComponent" /tr '"C:\Users\Admin\AppData\Local\Temp\BootComponent.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "BootComponent" /tr '"C:\Users\Admin\AppData\Local\Temp\BootComponent.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2348
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF40F.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2896
- - C:\Users\Admin\AppData\Local\Temp\BootComponent.exe
    "C:\Users\Admin\AppData\Local\Temp\BootComponent.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2716

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\BootComponent.exe

Filesize
63KB

MD5
e15497d7443c2dee4cf4ae3bbbc344f9

SHA1
ed863f95cf9701ccde2db4119d65aa1bf1060b54

SHA256
aca0856176e5bdbe4e93fb853855fe20b8317942910b5ac97b200575f0862fa9

SHA512
1c6dedcbfc88ec03a8b6a7031e10381ec26eba0df7083a636555b28a752792c72774d5add0378e944f1d646d5abf7e328f57c19fe1ede5d87f04cad3b0f2ec5e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab7A1.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF40F.tmp.bat

Filesize
160B

MD5
cb975234d4d4563485ff37726cf38662

SHA1
26e1b437ddfea740f0114b87f91dfb31c5b403c0

SHA256
7e8ab3fd99a774d8f60e6694093bc79b83910116fe36778862077796b59137ae

SHA512
5ed1602d5eb2743b01ae8ab7b1f52d3059ca2e01647a4a24c8a9a4ca3433328ce04aab4b14b089223a49842b84dd5c3ffb56a2139f35952c2afa15c99c1aa5bf

Download Submit
memory/2716-17-0x0000000000CE0000-0x0000000000CF6000-memory.dmp

Filesize
88KB

Download
memory/2760-0-0x000007FEF5823000-0x000007FEF5824000-memory.dmp

Filesize
4KB

Download
memory/2760-1-0x00000000001E0000-0x00000000001F6000-memory.dmp

Filesize
88KB

Download
memory/2760-2-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

Filesize
9.9MB

Download
memory/2760-3-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

Filesize
9.9MB

Download
memory/2760-13-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads