asyncrat | a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e

Analysis

max time kernel
148s
max time network
151s
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 18:56

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General

Target

a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
Size

111KB
MD5

6d6f27b64358c6966fd7911ee5adb8c9
SHA1

b422bc3fb57b03d2e58abf2ac3dcad8a6fe52729
SHA256

a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e
SHA512

5a2c4493f979f13f011924c41622e0d0bf9495a3a58e91af8e0ef571aaf219bcdec7cabfa01e25fac00b2e30ad860a2b2d83553d8e746c9c18c1b32fac6d9f2f
SSDEEP

3072:FUDcx2Bq2PMVie9VdQsH1bfZW/QEl3SH2Tdp+VBY:FSq2PMViaesVb4zA2xM

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

127.0.0.1:4449

103.184.193.137:4449

Mutex

iywvnwqghg

Attributes

delay
1
install
true
install_file
system32.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/1988-1-0x0000000000520000-0x0000000000542000-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	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe

Executes dropped EXE 1 IoCs

pid	Process
2292	system32.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
948	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
2340	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe
2292	system32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
Token: SeDebugPrivilege	2292	system32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2292	system32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1020	1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	94
PID 1988 wrote to memory of 1020	1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	94
PID 1988 wrote to memory of 4860	1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	96
PID 1988 wrote to memory of 4860	1988	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	96
PID 1020 wrote to memory of 2340	1020	cmd.exe	98
PID 1020 wrote to memory of 2340	1020	cmd.exe	98
PID 4860 wrote to memory of 948	4860	cmd.exe	99
PID 4860 wrote to memory of 948	4860	cmd.exe	99
PID 4860 wrote to memory of 2292	4860	cmd.exe	101
PID 4860 wrote to memory of 2292	4860	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\a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
"C:\Users\Admin\AppData\Local\Temp\a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "system32" /tr '"C:\Users\Admin\AppData\Roaming\system32.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1020
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "system32" /tr '"C:\Users\Admin\AppData\Roaming\system32.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2340
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp61B3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:948
- - C:\Users\Admin\AppData\Roaming\system32.exe
    "C:\Users\Admin\AppData\Roaming\system32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2292

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=4128,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8
1⤵
PID:4764

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\tmp61B3.tmp.bat

Filesize
152B

MD5
9b2059278ea0114b7e6b1cb515a56139

SHA1
e7f512c6b66ff8d0283288669785b706ee7b5a59

SHA256
9d26e3ea6c93862e34d8a3c42d3dc249818206f434680da4b2d3be5a2aa3fb4f

SHA512
c8e3614c5cc027f42238d0048125c4c43b943bcaf590840c54eaf18332757c89b6c072da3f25beb3d0edbbd4915a5c0ff93b266ba14c29829665be6c863f33d8

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\system32.exe

Filesize
111KB

MD5
6d6f27b64358c6966fd7911ee5adb8c9

SHA1
b422bc3fb57b03d2e58abf2ac3dcad8a6fe52729

SHA256
a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e

SHA512
5a2c4493f979f13f011924c41622e0d0bf9495a3a58e91af8e0ef571aaf219bcdec7cabfa01e25fac00b2e30ad860a2b2d83553d8e746c9c18c1b32fac6d9f2f

Download Submit
memory/1988-1-0x0000000000520000-0x0000000000542000-memory.dmp

Filesize
136KB

Download
memory/1988-0-0x00007FFA25483000-0x00007FFA25485000-memory.dmp

Filesize
8KB

Download
memory/1988-3-0x00007FFA25480000-0x00007FFA25F41000-memory.dmp

Filesize
10.8MB

Download
memory/1988-8-0x00007FFA25480000-0x00007FFA25F41000-memory.dmp

Filesize
10.8MB

Download
memory/1988-9-0x00007FFA25480000-0x00007FFA25F41000-memory.dmp

Filesize
10.8MB

Download