asyncrat | 6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e

Analysis

max time kernel
148s
max time network
129s
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 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 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/3652-1-0x0000000000930000-0x0000000000968000-memory.dmp	VenomRAT
behavioral2/files/0x00050000000004e7-13.dat	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00050000000004e7-13.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe

Executes dropped EXE 1 IoCs

pid	Process
4324	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
2504	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
4380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe
4324	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
Token: SeDebugPrivilege	4324	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4324	WinUpdate.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 2028	3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	94
PID 3652 wrote to memory of 2028	3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	94
PID 3652 wrote to memory of 3616	3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	95
PID 3652 wrote to memory of 3616	3652	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	95
PID 3616 wrote to memory of 2504	3616	cmd.exe	98
PID 3616 wrote to memory of 2504	3616	cmd.exe	98
PID 2028 wrote to memory of 4380	2028	cmd.exe	99
PID 2028 wrote to memory of 4380	2028	cmd.exe	99
PID 3616 wrote to memory of 4324	3616	cmd.exe	101
PID 3616 wrote to memory of 4324	3616	cmd.exe	101

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⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652
- 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:2028
- - 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:4380
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB512.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2504
- - 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:4324

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4292,i,1729213506309163284,12809566808978835441,262144 --variations-seed-version --mojo-platform-channel-handle=3860 /prefetch:8
1⤵
PID:4736

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\tmpB512.tmp.bat

Filesize
153B

MD5
6ee7ab8d092c06e3dfe6387fa29f95f4

SHA1
b3171f9857b67ce5ae8e3bce2e16fdadc0c859a7

SHA256
a370896bbedff35e0a5acd6899724ca6cfab79a31c151368ad0e79b30f374a80

SHA512
a46ccfb92ef9b4013e2040915bc9785703ce29e3ad47dc11ca65a8069a63d3e505bebd41ab3639728a768908cb1382b36ebad4993aa6c5af8b657e3e43e175d5

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/3652-1-0x0000000000930000-0x0000000000968000-memory.dmp

Filesize
224KB

Download
memory/3652-0-0x00007FFA2F053000-0x00007FFA2F055000-memory.dmp

Filesize
8KB

Download
memory/3652-3-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

Filesize
10.8MB

Download
memory/3652-8-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

Filesize
10.8MB

Download
memory/3652-9-0x00007FFA2F050000-0x00007FFA2FB11000-memory.dmp

Filesize
10.8MB

Download