asyncrat | 79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/07/2026, 16:58

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General

Target
79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
Size 45KB
Sample260721-vg5d8a1cph
SHA256 79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2
MD5 1233e839c458e7692f68386692b4297a
SHA1 d5af4af16050b4e87396af39bd5b8b64efb827c1
SHA512 d89bc15e51a69aef2b36f5d44c4afd0404f1e96f0bc6468105d6041083e4beae3ce71852b9985715e4c2c43961ad7aa22a0019a583f39d42f078e03183bb6960
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNiS7synzuOPIzzjbigXRi7s6SE77eC9JczxbAEozW:5uSy6pTpoo2fSYh3z3bFXAYE7agJceEx
TLSH
T11A233B003BE8812BF2BE5FB89DF26145867AF2672603D5491CC411DB5713FC69A42AFE
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
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
remote.kacasatu.com:80
remote.kacasatu.com:22
remote.kacasatu.com:8080
remote.kacasatu.com:8880
remote.kacasatu.com:2052
remote.kacasatu.com:2082
remote.kacasatu.com:2086
remote.kacasatu.com:2095
remote.kacasatu.com:443
remote.kacasatu.com:2053
remote.kacasatu.com:2083
remote.kacasatu.com:2087
remote.kacasatu.com:2096
remote.kacasatu.com:8443

Mutex

ceagVnIofdPv

Attributes

delay
0
install
true
install_file
4x8hruo.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/0x000e00000001c3d0-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5084	4x8hruo.exe
4280	4x8hruo.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
3296	cmd.exe
3256	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4x8hruo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4x8hruo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1824	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
1960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
Token: SeDebugPrivilege	5084	4x8hruo.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 3296	540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe	89
PID 540 wrote to memory of 3256	540	79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe	91
PID 3256 wrote to memory of 1824	3256	cmd.exe	93
PID 3296 wrote to memory of 1960	3296	cmd.exe	94
PID 3256 wrote to memory of 4280	3256	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe
"C:\Users\Admin\AppData\Local\Temp\79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "4x8hruo" /tr '"C:\Users\Admin\AppData\Roaming\4x8hruo.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3296
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "4x8hruo" /tr '"C:\Users\Admin\AppData\Roaming\4x8hruo.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1960
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF7A9.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1824
- - C:\Users\Admin\AppData\Roaming\4x8hruo.exe
    "C:\Users\Admin\AppData\Roaming\4x8hruo.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4280

C:\Users\Admin\AppData\Roaming\4x8hruo.exe
"C:\Users\Admin\AppData\Roaming\4x8hruo.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5084

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

tmpF7A9.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF7A9.tmp.bat
Size 151B
SHA256 65779abadffde5510568e277830fffce7a77e9428dd83470286ca1f69df42a5e
MD5 1ff33395b5d570425e3791af9a95dbe0
SHA1 ac041c9a114eb96d792a551c10cc37f377a3aa02
SHA512 265be284d98977a31bf7d7cb7d2fe3159da09cfbc1ee38eebe126f0627e0b9e95e0f75f729a6ac4a5ebce92c18a8b3fd11ceba96d965e745cb4d622857bcf335
TLSH
T19FC02B43D6C6FE0E7805245302FBDA8DA2727D593F40BF00C394445E12D044CF1D934A
MD5 SHA1 SHA512 TLSH

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4x8hruo.exe

Path C:\Users\Admin\AppData\Roaming\4x8hruo.exe
Size 45KB
SHA256 79a9a2afa522359c21921852ef02d4bd9ff258519fb2bb51a97da31d48a844d2
MD5 1233e839c458e7692f68386692b4297a
SHA1 d5af4af16050b4e87396af39bd5b8b64efb827c1
SHA512 d89bc15e51a69aef2b36f5d44c4afd0404f1e96f0bc6468105d6041083e4beae3ce71852b9985715e4c2c43961ad7aa22a0019a583f39d42f078e03183bb6960
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNiS7synzuOPIzzjbigXRi7s6SE77eC9JczxbAEozW:5uSy6pTpoo2fSYh3z3bFXAYE7agJceEx
TLSH
T11A233B003BE8812BF2BE5FB89DF26145867AF2672603D5491CC411DB5713FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/540-0-0x0000000074B92000-0x0000000074B93000-memory.dmp

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memory/540-1-0x00000000001F0000-0x0000000000202000-memory.dmp

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memory/540-2-0x0000000074B80000-0x000000007533C000-memory.dmp

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memory/540-3-0x0000000004D40000-0x0000000004DDC000-memory.dmp

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memory/540-8-0x0000000074B80000-0x000000007533C000-memory.dmp

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memory/5084-12-0x0000000074A10000-0x00000000751CC000-memory.dmp

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memory/5084-14-0x0000000074A10000-0x00000000751CC000-memory.dmp

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