asyncrat | aac3c2253f66894d743e9989fbd4b10aded43370b2f8c8e7b8648e1a7288743f

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260630-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/07/2026, 02:01

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General

Target
reyhfgh.exe
Size 45KB
Sample260702-cfw3caaz3w
SHA256 aac3c2253f66894d743e9989fbd4b10aded43370b2f8c8e7b8648e1a7288743f
MD5 53ac9981546f39697e69501e7be6af4c
SHA1 3bdc06994c18808ae63530dc0ffae795de659b44
SHA512 40a572292d76002978d52de3e76cc8855474ebce18b6fa2decf4f63e3c808afa1f07a81886e1b4a52cda9b4204518f740059011e4b7eaf053f8bb5f0d1149f9f
SSDEEP 768:tuyZNTAoZjRWUJd9bmo2qLN9YikqHztOPIUzjbjgE3iHIoRMZiQ5yNoIBDZKx:tuyZNTAGL2CalK3U3b8ES9MjudKx
TLSH
T129232B003BE9C22BF2BE4F78ACF26245467AF1633603D64A1CC451975713BC69A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

admin defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Admin

sexdeo.net:80
sexdeo.net:443
www.sexdeo.net:80
www.sexdeo.net:443
ssh.sexdeo.net:80
ssh.sexdeo.net:443

Mutex

gJI8D9k7iJxw

Attributes

delay
3
install
true
install_file
reyhfgh.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/0x000f00000001c5c1-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
560	reyhfgh.exe
5760	reyhfgh.exe

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

System Information Discovery
T1082

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	reyhfgh.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reyhfgh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reyhfgh.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4920	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
5404	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe
5708	reyhfgh.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5708	reyhfgh.exe
Token: SeDebugPrivilege	560	reyhfgh.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5708 wrote to memory of 4256	5708	reyhfgh.exe	88
PID 5708 wrote to memory of 4300	5708	reyhfgh.exe	90
PID 4300 wrote to memory of 4920	4300	cmd.exe	92
PID 4256 wrote to memory of 5404	4256	cmd.exe	93
PID 4300 wrote to memory of 5760	4300	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\reyhfgh.exe
"C:\Users\Admin\AppData\Local\Temp\reyhfgh.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "reyhfgh" /tr '"C:\Users\Admin\AppData\Roaming\reyhfgh.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "reyhfgh" /tr '"C:\Users\Admin\AppData\Roaming\reyhfgh.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5404
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1B5E.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4920
- - C:\Users\Admin\AppData\Roaming\reyhfgh.exe
    "C:\Users\Admin\AppData\Roaming\reyhfgh.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5760

C:\Users\Admin\AppData\Roaming\reyhfgh.exe
"C:\Users\Admin\AppData\Roaming\reyhfgh.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:560

Network

MITRE ATT&CK Enterprise v16

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

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

tmp1B5E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1B5E.tmp.bat
Size 151B
SHA256 e9dc4dcba0a14c39ef03dfe39cf532a2f6fed0d6eac755fec0d5c944928ab33f
MD5 c00ccd001a11b38e5bc3ca321756567c
SHA1 14bc1a2e0a071d216c4979e5e7fed0c215e9788d
SHA512 2cd9cf5e2956749aa0eb5c1b0e891d687b220bfcf7f9c8fa048180f387ab218cc45b7bfd52962281b4a5919a53d603187d26c6997d811b7efa937bcc755db7db
TLSH
T1A2C02B4255CDEE0F694A541313FFD88E9176AD193F80BB00C304841E33C044AF0DE345
MD5 SHA1 SHA512 TLSH

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reyhfgh.exe

Path C:\Users\Admin\AppData\Roaming\reyhfgh.exe
Size 45KB
SHA256 aac3c2253f66894d743e9989fbd4b10aded43370b2f8c8e7b8648e1a7288743f
MD5 53ac9981546f39697e69501e7be6af4c
SHA1 3bdc06994c18808ae63530dc0ffae795de659b44
SHA512 40a572292d76002978d52de3e76cc8855474ebce18b6fa2decf4f63e3c808afa1f07a81886e1b4a52cda9b4204518f740059011e4b7eaf053f8bb5f0d1149f9f
SSDEEP 768:tuyZNTAoZjRWUJd9bmo2qLN9YikqHztOPIUzjbjgE3iHIoRMZiQ5yNoIBDZKx:tuyZNTAGL2CalK3U3b8ES9MjudKx
TLSH
T129232B003BE9C22BF2BE4F78ACF26245467AF1633603D64A1CC451975713BC69A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/560-12-0x00000000741F0000-0x00000000749AC000-memory.dmp

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memory/560-14-0x00000000741F0000-0x00000000749AC000-memory.dmp

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memory/5708-0-0x0000000074372000-0x0000000074373000-memory.dmp

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memory/5708-1-0x0000000000600000-0x0000000000612000-memory.dmp

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memory/5708-2-0x0000000074360000-0x0000000074B1C000-memory.dmp

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memory/5708-3-0x00000000051D0000-0x000000000526C000-memory.dmp

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memory/5708-8-0x0000000074360000-0x0000000074B1C000-memory.dmp

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