asyncrat | f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 19:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
Size

74KB
MD5

5a3a5c11825b10b21ed422f9988b6cbe
SHA1

8e31f8b4b94c0aace78900a0d2a29842f0782f68
SHA256

f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85
SHA512

083fadbf5bc60f9c2b50b3512b304eeebf0a41a6ac3be2ee417e66db0eb66787547bb7cfa3d654630b770e215c9f6009898420192820912809052e50256b1b15
SSDEEP

1536:dXUHccx4m3Cmv6PMV4mdwLFaI8H1b+/dkzQzcYxLVclN:dXU8cx4qB6PMV4mjH1b+CQNxBY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

WindowsDefender

Attributes

delay
1
install
true
install_file
Windows Defender Manager.exe
install_folder
%Temp%
pastebin_config
https://pastebin.com/raw/LwwcrLg4

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/4796-1-0x0000000000590000-0x00000000005A8000-memory.dmp	VenomRAT
behavioral2/files/0x00050000000226f8-12.dat	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00050000000226f8-12.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe

Executes dropped EXE 1 IoCs

pid	Process
1592	Windows Defender Manager.exe

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

Web Service

T1102

flow	ioc
25	pastebin.com
27	pastebin.com

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
3628	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
2436	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe
1592	Windows Defender Manager.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
Token: SeDebugPrivilege	1592	Windows Defender Manager.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1592	Windows Defender Manager.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 3928	4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe	88
PID 4796 wrote to memory of 3928	4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe	88
PID 4796 wrote to memory of 916	4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe	89
PID 4796 wrote to memory of 916	4796	f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe	89
PID 3928 wrote to memory of 2436	3928	cmd.exe	92
PID 3928 wrote to memory of 2436	3928	cmd.exe	92
PID 916 wrote to memory of 3628	916	cmd.exe	93
PID 916 wrote to memory of 3628	916	cmd.exe	93
PID 916 wrote to memory of 1592	916	cmd.exe	94
PID 916 wrote to memory of 1592	916	cmd.exe	94

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\f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe
"C:\Users\Admin\AppData\Local\Temp\f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender Manager" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Defender Manager.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender Manager" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Defender Manager.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2436
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC0F.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:916
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3628
- - C:\Users\Admin\AppData\Local\Temp\Windows Defender Manager.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Defender Manager.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1592

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Windows Defender Manager.exe

Filesize
74KB

MD5
5a3a5c11825b10b21ed422f9988b6cbe

SHA1
8e31f8b4b94c0aace78900a0d2a29842f0782f68

SHA256
f6cd78c4a4628d0c9b4d6895d711f049deb9582d2596cf9a22e98400392a2c85

SHA512
083fadbf5bc60f9c2b50b3512b304eeebf0a41a6ac3be2ee417e66db0eb66787547bb7cfa3d654630b770e215c9f6009898420192820912809052e50256b1b15

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAC0F.tmp.bat

Filesize
171B

MD5
ab94e9b51fa681d1be29365beaa45ae7

SHA1
60c295113c74b1bed9018a7cccbf387e008db008

SHA256
4931c89e303a63df23513c870ac349d4f5b3f7a8df4cde0f96b9f3033788e1cf

SHA512
1645558830e56188b36aab9780d91de6225cee3342562ec0de163caca12d3d7406fad4fdeb6433a785cc95e50b0fa0b1a3662932aca9b731e11dcf022da940b8

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/4796-0-0x00007FF9209B3000-0x00007FF9209B5000-memory.dmp

Filesize
8KB

Download
memory/4796-1-0x0000000000590000-0x00000000005A8000-memory.dmp

Filesize
96KB

Download
memory/4796-3-0x00007FF9209B0000-0x00007FF921471000-memory.dmp

Filesize
10.8MB

Download
memory/4796-8-0x00007FF9209B0000-0x00007FF921471000-memory.dmp

Filesize
10.8MB

Download
memory/4796-9-0x00007FF9209B0000-0x00007FF921471000-memory.dmp

Filesize
10.8MB

Download