asyncrat | 5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/07/2026, 08:52

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General

Target
5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
Size 45KB
Sample260721-kstrrabt4k
SHA256 5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd
MD5 eac7668b78552dd10665b67388b22782
SHA1 05c56490889bbea5e4d7eb54fa8c1e3e3640eb73
SHA512 d314ba03278d5584761eb11c711185941ce1c846671f87ac201a8bcb658a30dad7d62649e8b7ed1dc446ced19e19141c6ce8cd63e50d18ab97723a3e192e9bbb
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1LT2Qpm7PIKVjbQgX3iEXRO3+NqG99z+6MKoght2:cu6YepTPso2JeK9bXXSGZNqQo6M2jdUx
TLSH
T1AD231B003BE88227F2BE4FB89DF26145857AF6632603D5492CC451DB5723FC69A426FD
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

kacasatu.com:80
kacasatu.com:22
kacasatu.com:8080
kacasatu.com:8880
kacasatu.com:2052
kacasatu.com:2082
kacasatu.com:2086
kacasatu.com:2095
kacasatu.com:443
kacasatu.com:2053
kacasatu.com:2083
kacasatu.com:2087
kacasatu.com:2096
kacasatu.com:8443
www.kacasatu.com:80
www.kacasatu.com:22
www.kacasatu.com:8080
www.kacasatu.com:8880
www.kacasatu.com:2052
www.kacasatu.com:2082
www.kacasatu.com:2086
www.kacasatu.com:2095
www.kacasatu.com:443
www.kacasatu.com:2053
www.kacasatu.com:2083
www.kacasatu.com:2087
www.kacasatu.com:2096
www.kacasatu.com:8443
malware.kacasatu.com:80
malware.kacasatu.com:22
malware.kacasatu.com:8080
malware.kacasatu.com:8880
malware.kacasatu.com:2052
malware.kacasatu.com:2082
malware.kacasatu.com:2086
malware.kacasatu.com:2095
malware.kacasatu.com:443
malware.kacasatu.com:2053
malware.kacasatu.com:2083
malware.kacasatu.com:2087
malware.kacasatu.com:2096
malware.kacasatu.com:8443
trickbot.kacasatu.com:80
trickbot.kacasatu.com:22
trickbot.kacasatu.com:8080
trickbot.kacasatu.com:8880
trickbot.kacasatu.com:2052
trickbot.kacasatu.com:2082
trickbot.kacasatu.com:2086
trickbot.kacasatu.com:2095
trickbot.kacasatu.com:443
trickbot.kacasatu.com:2053
trickbot.kacasatu.com:2083
trickbot.kacasatu.com:2087
trickbot.kacasatu.com:2096
trickbot.kacasatu.com:8443
clop.kacasatu.com:80
clop.kacasatu.com:22
clop.kacasatu.com:8080
clop.kacasatu.com:8880
clop.kacasatu.com:2052
clop.kacasatu.com:2082
clop.kacasatu.com:2086
clop.kacasatu.com:2095
clop.kacasatu.com:443
clop.kacasatu.com:2053
clop.kacasatu.com:2083
clop.kacasatu.com:2087
clop.kacasatu.com:2096
clop.kacasatu.com:8443
client.kacasatu.com:80
client.kacasatu.com:22
client.kacasatu.com:8080
client.kacasatu.com:8880
client.kacasatu.com:2052
client.kacasatu.com:2082
client.kacasatu.com:2086
client.kacasatu.com:2095
client.kacasatu.com:443
client.kacasatu.com:2053
client.kacasatu.com:2083
client.kacasatu.com:2087
client.kacasatu.com:2096
client.kacasatu.com:8443

Mutex

9E2DCSRo99x0

Attributes

delay
0
install
true
install_file
bhc8n5i7.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/0x001700000001c474-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5680	bhc8n5i7.exe
3472	bhc8n5i7.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
1572	cmd.exe
5012	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bhc8n5i7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bhc8n5i7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2704	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
2784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
Token: SeDebugPrivilege	5680	bhc8n5i7.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5552 wrote to memory of 1572	5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe	89
PID 5552 wrote to memory of 5012	5552	5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe	90
PID 1572 wrote to memory of 2784	1572	cmd.exe	93
PID 5012 wrote to memory of 2704	5012	cmd.exe	94
PID 5012 wrote to memory of 3472	5012	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe
"C:\Users\Admin\AppData\Local\Temp\5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bhc8n5i7" /tr '"C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "bhc8n5i7" /tr '"C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2784
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5654.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5012
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2704
- - C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe
    "C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3472

C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe
"C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5680

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:3356

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

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Downloads

tmp5654.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5654.tmp.bat
Size 152B
SHA256 a8eee8d7b565552c4688d2f3ca197899ad1bfafd11b1f64b3c3a4f0af82b3de0
MD5 623ddbd87a48c61d0a4fae59db883594
SHA1 4ccc058776cd1a243eec751bbdbdea903ae63bed
SHA512 4ea30b401588b53ab2b59da633df0ee48d24885173e4b07b27ff7b5467830fade393976166a279e5f49ddb3efbff787df507f6c09fa23eea8d8068e46c0256ec
TLSH
T1AEC08C4259C6AA4E3846582303BA999C91626D2A3F40BB549318540B1680448E0D9381
MD5 SHA1 SHA512 TLSH

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bhc8n5i7.exe

Path C:\Users\Admin\AppData\Roaming\bhc8n5i7.exe
Size 45KB
SHA256 5ab63f1849837e8eddd06b2ebd84f022db7721c3144291698f3f48b3d7c313cd
MD5 eac7668b78552dd10665b67388b22782
SHA1 05c56490889bbea5e4d7eb54fa8c1e3e3640eb73
SHA512 d314ba03278d5584761eb11c711185941ce1c846671f87ac201a8bcb658a30dad7d62649e8b7ed1dc446ced19e19141c6ce8cd63e50d18ab97723a3e192e9bbb
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1LT2Qpm7PIKVjbQgX3iEXRO3+NqG99z+6MKoght2:cu6YepTPso2JeK9bXXSGZNqQo6M2jdUx
TLSH
T1AD231B003BE88227F2BE4FB89DF26145857AF6632603D5492CC451DB5723FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5552-0-0x0000000074532000-0x0000000074533000-memory.dmp

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memory/5552-1-0x0000000000750000-0x0000000000762000-memory.dmp

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memory/5552-2-0x0000000074520000-0x0000000074CDC000-memory.dmp

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memory/5552-3-0x0000000005180000-0x000000000521C000-memory.dmp

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memory/5552-8-0x0000000074520000-0x0000000074CDC000-memory.dmp

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memory/5680-12-0x00000000743B0000-0x0000000074B6C000-memory.dmp

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memory/5680-14-0x00000000743B0000-0x0000000074B6C000-memory.dmp

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