asyncrat | df6a38e3658e607ca005881650480cb7485dce3fa1d9480a25b8858c17bcc509

General

Target

AimAssist.exe
Size

74KB
MD5

652d8971b1de9ac91d9dc53150a83a6f
SHA1

f58b1ba78665d08a52d355ba626fa8d2a72d8f19
SHA256

df6a38e3658e607ca005881650480cb7485dce3fa1d9480a25b8858c17bcc509
SHA512

4047192ec25582eca08e58b316694135054ba41de91df1d914f9565acc773b9bde7d0a426d70a878a7ea13720707fe462f73ad5fcd829322cd5edc312f3ae7d4
SSDEEP

1536:hUOgcxLVNCBWPMVWSIIcH1bi/NWQQzcSLVclN:hUfcxLfaWPMVWSOH1bilbQDBY

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.225:54312

Mutex

dzhpquvlshqpbv

Attributes

delay
1
install
true
install_file
Programs.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

VenomRAT 2 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
behavioral2/memory/4456-1-0x00000000004A0000-0x00000000004B8000-memory.dmp	VenomRAT
behavioral2/files/0x000b000000023bac-12.dat	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023bac-12.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

AimAssist.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	AimAssist.exe

Executes dropped EXE 1 IoCs

Processes:

Programs.exe

pid	Process
4884	Programs.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
4516	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
4480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

AimAssist.exePrograms.exe

pid	Process
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4456	AimAssist.exe
4884	Programs.exe
4884	Programs.exe
4884	Programs.exe
4884	Programs.exe
4884	Programs.exe
4884	Programs.exe
4884	Programs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AimAssist.exePrograms.exe

description	pid	Process
Token: SeDebugPrivilege	4456	AimAssist.exe
Token: SeDebugPrivilege	4884	Programs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Programs.exe

pid	Process
4884	Programs.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

AimAssist.execmd.execmd.exe

description	pid	Process	procid_target
PID 4456 wrote to memory of 2700	4456	AimAssist.exe	82
PID 4456 wrote to memory of 2700	4456	AimAssist.exe	82
PID 4456 wrote to memory of 2420	4456	AimAssist.exe	84
PID 4456 wrote to memory of 2420	4456	AimAssist.exe	84
PID 2700 wrote to memory of 4480	2700	cmd.exe	86
PID 2700 wrote to memory of 4480	2700	cmd.exe	86
PID 2420 wrote to memory of 4516	2420	cmd.exe	87
PID 2420 wrote to memory of 4516	2420	cmd.exe	87
PID 2420 wrote to memory of 4884	2420	cmd.exe	88
PID 2420 wrote to memory of 4884	2420	cmd.exe	88

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\AimAssist.exe
"C:\Users\Admin\AppData\Local\Temp\AimAssist.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Programs" /tr '"C:\Users\Admin\AppData\Roaming\Programs.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Programs" /tr '"C:\Users\Admin\AppData\Roaming\Programs.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4480
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9913.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2420
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4516
- - C:\Users\Admin\AppData\Roaming\Programs.exe
    "C:\Users\Admin\AppData\Roaming\Programs.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4884

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9913.tmp.bat

Filesize
152B

MD5
3a1f5ab8aaddf40665f0d5dac92cac54

SHA1
f1cf2a0032893e00df136d1ebf0b83a1bf2f3982

SHA256
2c66674cbe27d54f966ade4999e8dcc2d47101652b7dfaccb8a6123759a65cdb

SHA512
99db3b39b3ec6ae18d4aa9bb0aa027fb16864911e0fb693b78c52559bd0ac9a9362a85d00713969b10cf4b583c53e6a566c413d81959f5a6eba48651ef912cd6

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
74KB

MD5
652d8971b1de9ac91d9dc53150a83a6f

SHA1
f58b1ba78665d08a52d355ba626fa8d2a72d8f19

SHA256
df6a38e3658e607ca005881650480cb7485dce3fa1d9480a25b8858c17bcc509

SHA512
4047192ec25582eca08e58b316694135054ba41de91df1d914f9565acc773b9bde7d0a426d70a878a7ea13720707fe462f73ad5fcd829322cd5edc312f3ae7d4

Download Submit
memory/4456-0-0x00007FF9430B3000-0x00007FF9430B5000-memory.dmp

Filesize
8KB

Download
memory/4456-1-0x00000000004A0000-0x00000000004B8000-memory.dmp

Filesize
96KB

Download
memory/4456-3-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/4456-8-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/4456-9-0x00007FF9430B0000-0x00007FF943B71000-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