asyncrat | 6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e

Analysis

max time kernel
147s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 18:47

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General

Target

6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
Size

204KB
MD5

d6c3e22a2d260e9124481f4a82278da5
SHA1

151167da902148943ba8554fab4331d82ec8b150
SHA256

6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e
SHA512

11f92b994434c43c0a2393e1347b4b96ad00be36ade16b16860b1fed65d76a7a5d9ef35019092ea37db3f841b66bf5b8ca1187ba84cb63d22d95057439d7b967
SSDEEP

3072:60U2cxq3O6PMV9iFTH1bRGAgxy1QhWwfBtOEp7ybMj/0vU7yZED+CDgbB+Y:xDO6PMVQVbjgxkoW6mEpmbMjgU7yZf8

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Mutex

server.underground-cheat.xyz

Attributes

delay
1
install
true
install_file
WinUpdate.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2316-1-0x0000000000ED0000-0x0000000000F08000-memory.dmp	VenomRAT
behavioral1/files/0x0008000000018b6e-16.dat	VenomRAT
behavioral1/memory/2676-18-0x0000000000320000-0x0000000000358000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000018b6e-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2676	WinUpdate.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
2660	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
2804	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe
2676	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
Token: SeDebugPrivilege	2676	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2676	WinUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2696	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	30
PID 2316 wrote to memory of 2696	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	30
PID 2316 wrote to memory of 2696	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	30
PID 2316 wrote to memory of 2160	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	31
PID 2316 wrote to memory of 2160	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	31
PID 2316 wrote to memory of 2160	2316	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	31
PID 2696 wrote to memory of 2804	2696	cmd.exe	34
PID 2696 wrote to memory of 2804	2696	cmd.exe	34
PID 2696 wrote to memory of 2804	2696	cmd.exe	34
PID 2160 wrote to memory of 2660	2160	cmd.exe	35
PID 2160 wrote to memory of 2660	2160	cmd.exe	35
PID 2160 wrote to memory of 2660	2160	cmd.exe	35
PID 2160 wrote to memory of 2676	2160	cmd.exe	36
PID 2160 wrote to memory of 2676	2160	cmd.exe	36
PID 2160 wrote to memory of 2676	2160	cmd.exe	36

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\6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
"C:\Users\Admin\AppData\Local\Temp\6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2804
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp21A4.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2660
- - C:\Users\Admin\AppData\Roaming\WinUpdate.exe
    "C:\Users\Admin\AppData\Roaming\WinUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2676

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp21A4.tmp.bat

Filesize
153B

MD5
723e874315f08fe601d7cebf2e843644

SHA1
5360a3848109b514b602ba9aa21e9d92501726cf

SHA256
ae245826b88d97fdadef7c49f9e7205dfd51c8e0cfbf5f5155671188860c9e50

SHA512
a10a1fa084ed8f53da8a58a674b725bc472bedd770958ee2e2b97b12bf274cf43b7beb07360eb5dacf0f62a00ea58e9cd09cc371689b2c3b2d23cb69d184ce1b

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\WinUpdate.exe

Filesize
204KB

MD5
d6c3e22a2d260e9124481f4a82278da5

SHA1
151167da902148943ba8554fab4331d82ec8b150

SHA256
6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e

SHA512
11f92b994434c43c0a2393e1347b4b96ad00be36ade16b16860b1fed65d76a7a5d9ef35019092ea37db3f841b66bf5b8ca1187ba84cb63d22d95057439d7b967

Download Submit
memory/2316-0-0x000007FEF4EB3000-0x000007FEF4EB4000-memory.dmp

Filesize
4KB

Download
memory/2316-1-0x0000000000ED0000-0x0000000000F08000-memory.dmp

Filesize
224KB

Download
memory/2316-3-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

Filesize
9.9MB

Download
memory/2316-12-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

Filesize
9.9MB

Download
memory/2316-13-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

Filesize
9.9MB

Download
memory/2676-18-0x0000000000320000-0x0000000000358000-memory.dmp

Filesize
224KB

Download