asyncrat | cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

Analysis

max time kernel
150s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
04/08/2024, 11:58

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General

Target
cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
Size 74KB
Sample240804-n5l48ayflc
SHA256 cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80
MD5 4fb681131f7ac7824c4f0afd337986d9
SHA1 c746978c6c091d94f2bbd17b1ad5954c4306bece
SHA512 b5c2c3f6b5fe4845c0462059d9177b0cf56a36fe528745a9ea7f27120fdf2184b44be4dc5195d9e0d98a5a5987b8bc212707b3b4cc5ada9203db61f9859f3868
SSDEEP 1536:EUo0cxhzjBCViPMVXOS0GIkH1b6/20AuQQzcqLVclN:EUlcxhzVCiPMVOkH1b6+/QbBY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat 100 rnd rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

100 RND

91.92.243.191:5401

Mutex

6871a79e-e4f7-4fb3-ae38-dc20c1d657a0

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000200000002aaae-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
256	hyperhostvc.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
4676	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
4592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe
256	hyperhostvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
Token: SeDebugPrivilege	256	hyperhostvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
256	hyperhostvc.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 1048	228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe	83
PID 228 wrote to memory of 1048	228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe	83
PID 228 wrote to memory of 3804	228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe	84
PID 228 wrote to memory of 3804	228	cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe	84
PID 1048 wrote to memory of 4592	1048	cmd.exe	87
PID 1048 wrote to memory of 4592	1048	cmd.exe	87
PID 3804 wrote to memory of 4676	3804	cmd.exe	88
PID 3804 wrote to memory of 4676	3804	cmd.exe	88
PID 3804 wrote to memory of 256	3804	cmd.exe	89
PID 3804 wrote to memory of 256	3804	cmd.exe	89

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\cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe
"C:\Users\Admin\AppData\Local\Temp\cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "hyperhostvc" /tr '"C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "hyperhostvc" /tr '"C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4592
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD707.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3804
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4676
- - C:\Users\Admin\AppData\Roaming\hyperhostvc.exe
    "C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:256

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

tmpD707.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpD707.tmp.bat
Size 155B
SHA256 b31d9806870e4e55bcd2aa4b25859f1f71047583c5646b75a7d1946ea3936370
MD5 e0e766e0f4781b904ffd11e9dae1bdc0
SHA1 3ec2d8077acd996f7021805d88d4ec303c1510cf
SHA512 8ee495746972dd8ae8b33365490819e61be42e7c45b80e465a27ecda0f73bf426be294a58cb44ca00ebbf89009899bf94d21da9e3f08199b96b679f682e228f4
MD5 SHA1 SHA512

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DataLogs.conf

Path C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
Size 8B
SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
MD5 cf759e4c5f14fe3eec41b87ed756cea8
SHA1 c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA512 c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b
MD5 SHA1 SHA512

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hyperhostvc.exe

Path C:\Users\Admin\AppData\Roaming\hyperhostvc.exe
Size 74KB
SHA256 cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80
MD5 4fb681131f7ac7824c4f0afd337986d9
SHA1 c746978c6c091d94f2bbd17b1ad5954c4306bece
SHA512 b5c2c3f6b5fe4845c0462059d9177b0cf56a36fe528745a9ea7f27120fdf2184b44be4dc5195d9e0d98a5a5987b8bc212707b3b4cc5ada9203db61f9859f3868
SSDEEP 1536:EUo0cxhzjBCViPMVXOS0GIkH1b6/20AuQQzcqLVclN:EUlcxhzVCiPMVOkH1b6+/QbBY
MD5 SHA1 SHA512 SSDEEP

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memory/228-0-0x00007FFEFBC53000-0x00007FFEFBC55000-memory.dmp

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memory/228-1-0x0000000000220000-0x0000000000238000-memory.dmp

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memory/228-3-0x00007FFEFBC50000-0x00007FFEFC712000-memory.dmp

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memory/228-4-0x00007FFEFBC50000-0x00007FFEFC712000-memory.dmp

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memory/228-9-0x00007FFEFBC50000-0x00007FFEFC712000-memory.dmp

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