asyncrat | 529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/09/2026, 10:59

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
Size 45KB
Sample260907-m3szbaszes
SHA256 529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742
MD5 845a5f498ab18f8044fa51e8ecd8d0fa
SHA1 ceb275fa163473942f779f5c281b63d591792ffa
SHA512 7c447120cfd2ffa70a625983575e4de91d3c5080aa67a9f8d078ea1c777dc242a746426341ebc54ddd9b646d8285e0a435ac1109df87e4578e8c9f642e918af3
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql0zdAAyPMlL8TfPIMhzjb+gX3w9a8mxdstzBDZMx:wuDWZTpMZSB2FlvlL+4Mh3bBXg9aJxdP
TLSH
T18F231A003BE8C12BF2BE4B7899F26145867AF6673603D54E1CC452DB5713FC68A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

hentaiz.buzz:80
hentaiz.buzz:22
hentaiz.buzz:8080
hentaiz.buzz:8880
hentaiz.buzz:2052
hentaiz.buzz:2082
hentaiz.buzz:2086
hentaiz.buzz:2095
hentaiz.buzz:443
hentaiz.buzz:2053
hentaiz.buzz:2083
hentaiz.buzz:2087
hentaiz.buzz:2096
hentaiz.buzz:8443
www.hentaiz.buzz:80
www.hentaiz.buzz:22
www.hentaiz.buzz:8080
www.hentaiz.buzz:8880
www.hentaiz.buzz:2052
www.hentaiz.buzz:2082
www.hentaiz.buzz:2086
www.hentaiz.buzz:2095
www.hentaiz.buzz:443
www.hentaiz.buzz:2053
www.hentaiz.buzz:2083
www.hentaiz.buzz:2087
www.hentaiz.buzz:2096
www.hentaiz.buzz:8443
fakeupdates.hentaiz.buzz:80
fakeupdates.hentaiz.buzz:22
fakeupdates.hentaiz.buzz:8080
fakeupdates.hentaiz.buzz:8880
fakeupdates.hentaiz.buzz:2052
fakeupdates.hentaiz.buzz:2082
fakeupdates.hentaiz.buzz:2086
fakeupdates.hentaiz.buzz:2095
fakeupdates.hentaiz.buzz:443
fakeupdates.hentaiz.buzz:2053
fakeupdates.hentaiz.buzz:2083
fakeupdates.hentaiz.buzz:2087
fakeupdates.hentaiz.buzz:2096
fakeupdates.hentaiz.buzz:8443
revil.hentaiz.buzz:80
revil.hentaiz.buzz:22
revil.hentaiz.buzz:8080
revil.hentaiz.buzz:8880
revil.hentaiz.buzz:2052
revil.hentaiz.buzz:2082
revil.hentaiz.buzz:2086
revil.hentaiz.buzz:2095
revil.hentaiz.buzz:443
revil.hentaiz.buzz:2053
revil.hentaiz.buzz:2083
revil.hentaiz.buzz:2087
revil.hentaiz.buzz:2096
revil.hentaiz.buzz:8443

Mutex

aArVJT7l4PTs

Attributes

delay
0
install
true
install_file
bbisr.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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/0x000e00000001c4df-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2700	bbisr.exe
3924	bbisr.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1876	cmd.exe
2928	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bbisr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bbisr.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5220	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
5124	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
Token: SeDebugPrivilege	2700	bbisr.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4276 wrote to memory of 2928	4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe	89
PID 4276 wrote to memory of 1876	4276	529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe	90
PID 2928 wrote to memory of 5124	2928	cmd.exe	93
PID 1876 wrote to memory of 5220	1876	cmd.exe	94
PID 1876 wrote to memory of 3924	1876	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe
"C:\Users\Admin\AppData\Local\Temp\529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bbisr" /tr '"C:\Users\Admin\AppData\Roaming\bbisr.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "bbisr" /tr '"C:\Users\Admin\AppData\Roaming\bbisr.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5124
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFBDF.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5220
- - C:\Users\Admin\AppData\Roaming\bbisr.exe
    "C:\Users\Admin\AppData\Roaming\bbisr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3924

C:\Users\Admin\AppData\Roaming\bbisr.exe
"C:\Users\Admin\AppData\Roaming\bbisr.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2700

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmpFBDF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpFBDF.tmp.bat
Size 149B
SHA256 93061a370e378291c65ef53184075263233a2c4b323f90b35bc4c2293526c4e6
MD5 51c0b5becf5f40ae51b15d28a86e0f89
SHA1 3bdb286deb99d0ae52ebad5fc36627d198506077
SHA512 2508e8350eddce6690538b068e9ea1aab7a432e08cf4a78cf40b505752b8ff159c02deac7a47aafafdb1760680ad2f4d3b1593c8be33642a3e4860c950320496
TLSH
T131C08C4251C6FA0E680A541316BA958D916268193E44AB00C304854E1280848F8A9742
MD5 SHA1 SHA512 TLSH

Submit Download

bbisr.exe

Path C:\Users\Admin\AppData\Roaming\bbisr.exe
Size 45KB
SHA256 529e86db0c0c36ee8c9b30ce714955f439a4ac472e314b7e6257b08d7de55742
MD5 845a5f498ab18f8044fa51e8ecd8d0fa
SHA1 ceb275fa163473942f779f5c281b63d591792ffa
SHA512 7c447120cfd2ffa70a625983575e4de91d3c5080aa67a9f8d078ea1c777dc242a746426341ebc54ddd9b646d8285e0a435ac1109df87e4578e8c9f642e918af3
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql0zdAAyPMlL8TfPIMhzjb+gX3w9a8mxdstzBDZMx:wuDWZTpMZSB2FlvlL+4Mh3bBXg9aJxdP
TLSH
T18F231A003BE8C12BF2BE4B7899F26145867AF6673603D54E1CC452DB5713FC68A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2700-12-0x0000000074F50000-0x000000007570C000-memory.dmp

Download

memory/2700-14-0x0000000074F50000-0x000000007570C000-memory.dmp

Download

memory/4276-0-0x00000000750D2000-0x00000000750D3000-memory.dmp

Download

memory/4276-1-0x0000000000FE0000-0x0000000000FF2000-memory.dmp

Download

memory/4276-2-0x00000000750C0000-0x000000007587C000-memory.dmp

Download

memory/4276-3-0x00000000059F0000-0x0000000005A8C000-memory.dmp

Download

memory/4276-8-0x00000000750C0000-0x000000007587C000-memory.dmp

Download