asyncrat | 1b4f916a30466f815f0db44da716060281a124e82c1cb5aa83d000738f482796

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 14:10

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General

Target

Test.exe
Size

74KB
MD5

bd497a7b0fbbae4479865fb7db73ff3e
SHA1

d44545927097c11b430f9c1ed9a6d10c3e5c7b86
SHA256

1b4f916a30466f815f0db44da716060281a124e82c1cb5aa83d000738f482796
SHA512

67264b5e11afbe18b2b84accdfa9fb0e76fd85c62399ad29d97f844676e52c6d9e1f83dc3cb47e3147cf14e4794f3b682ce61639af79b23e8c920833b602bdb0
SSDEEP

1536:WUCccx0dxCKg6PMVP4SfSzyIrH1bC/iTQzcyLVclN:WUTcx0f9g6PMVP4SSH1bCMQjBY

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

127.0.0.1:15383

Mutex

hlvrakbhxgipspjpl

Attributes

delay
1
install
true
install_file
eeeehhhhh.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/1820-1-0x0000000000040000-0x0000000000058000-memory.dmp	VenomRAT
behavioral2/files/0x0008000000023cb3-11.dat	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023cb3-11.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:

Test.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	Test.exe

Executes dropped EXE 1 IoCs

Processes:

eeeehhhhh.exe

pid	Process
876	eeeehhhhh.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
3456	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
4904	schtasks.exe

Suspicious behavior: EnumeratesProcesses 53 IoCs

Processes:

Test.exeeeeehhhhh.exe

pid	Process
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
1820	Test.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe
876	eeeehhhhh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Test.exeeeeehhhhh.exe

description	pid	Process
Token: SeDebugPrivilege	1820	Test.exe
Token: SeDebugPrivilege	876	eeeehhhhh.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

eeeehhhhh.exe

pid	Process
876	eeeehhhhh.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Test.execmd.execmd.exe

description	pid	Process	procid_target
PID 1820 wrote to memory of 4684	1820	Test.exe	82
PID 1820 wrote to memory of 4684	1820	Test.exe	82
PID 1820 wrote to memory of 4312	1820	Test.exe	83
PID 1820 wrote to memory of 4312	1820	Test.exe	83
PID 4312 wrote to memory of 3456	4312	cmd.exe	86
PID 4312 wrote to memory of 3456	4312	cmd.exe	86
PID 4684 wrote to memory of 4904	4684	cmd.exe	87
PID 4684 wrote to memory of 4904	4684	cmd.exe	87
PID 4312 wrote to memory of 876	4312	cmd.exe	88
PID 4312 wrote to memory of 876	4312	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\Test.exe
"C:\Users\Admin\AppData\Local\Temp\Test.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "eeeehhhhh" /tr '"C:\Users\Admin\AppData\Roaming\eeeehhhhh.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4684
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "eeeehhhhh" /tr '"C:\Users\Admin\AppData\Roaming\eeeehhhhh.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4904
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBFD5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4312
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3456
- - C:\Users\Admin\AppData\Roaming\eeeehhhhh.exe
    "C:\Users\Admin\AppData\Roaming\eeeehhhhh.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:876

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\tmpBFD5.tmp.bat

Filesize
153B

MD5
cc3278039c8f5141074f2238ebff1a33

SHA1
101e99f55751f36b1020b95a5226c9c3042d39d5

SHA256
23039e4ae2b88301d804e9855cb173416e4500f71e03bd9e1344596b60ebf480

SHA512
fb5b8fae926fda9861176bb29d9d024830d7fce89769d7ed9ba4f66c5928d1d19be0e91227fcc1e922a0fd3f6f776f4fa3bc141a0800ce111e009f94609c27d4

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\eeeehhhhh.exe

Filesize
74KB

MD5
bd497a7b0fbbae4479865fb7db73ff3e

SHA1
d44545927097c11b430f9c1ed9a6d10c3e5c7b86

SHA256
1b4f916a30466f815f0db44da716060281a124e82c1cb5aa83d000738f482796

SHA512
67264b5e11afbe18b2b84accdfa9fb0e76fd85c62399ad29d97f844676e52c6d9e1f83dc3cb47e3147cf14e4794f3b682ce61639af79b23e8c920833b602bdb0

Download Submit
memory/1820-0-0x00007FFC2E373000-0x00007FFC2E375000-memory.dmp

Filesize
8KB

Download
memory/1820-1-0x0000000000040000-0x0000000000058000-memory.dmp

Filesize
96KB

Download
memory/1820-3-0x00007FFC2E370000-0x00007FFC2EE31000-memory.dmp

Filesize
10.8MB

Download
memory/1820-8-0x00007FFC2E370000-0x00007FFC2EE31000-memory.dmp

Filesize
10.8MB

Download
memory/1820-9-0x00007FFC2E370000-0x00007FFC2EE31000-memory.dmp

Filesize
10.8MB

Download