asyncrat | 5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/07/2026, 15:40

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General

Target
5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
Size 45KB
Sample260712-s36s3act3n
SHA256 5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626
MD5 1c772e7d7858fa08bd321f3cc98a42d4
SHA1 87d3b4afb49e4e4846d607dd9c6d1814abe254ed
SHA512 5f933a62730b48a3dbe09d2ce35f127961547595f276b2e6c8ff0d65369d701ac31891aa841c3dbe2ef325c506c96c9f0ed5e960ffb4c75e5b4f9ffba26b11f3
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9Xozfy3CKPI0cjbpgX3iog+HAdC+fYCBDZ8x:0uPrpT/qY2ZTR0sbmXSog+HPk/d8x
TLSH
T187232C003BE8C12BF2BF4B789DF26145457AF6633A03D6891CC4119B5623FC69A426FE
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

porn-th.com:80
porn-th.com:22
porn-th.com:8080
porn-th.com:8880
porn-th.com:2052
porn-th.com:2082
porn-th.com:2086
porn-th.com:2095
porn-th.com:443
porn-th.com:2053
porn-th.com:2083
porn-th.com:2087
porn-th.com:2096
porn-th.com:8443
www.porn-th.com:80
www.porn-th.com:22
www.porn-th.com:8080
www.porn-th.com:8880
www.porn-th.com:2052
www.porn-th.com:2082
www.porn-th.com:2086
www.porn-th.com:2095
www.porn-th.com:443
www.porn-th.com:2053
www.porn-th.com:2083
www.porn-th.com:2087
www.porn-th.com:2096
www.porn-th.com:8443
malware.porn-th.com:80
malware.porn-th.com:22
malware.porn-th.com:8080
malware.porn-th.com:8880
malware.porn-th.com:2052
malware.porn-th.com:2082
malware.porn-th.com:2086
malware.porn-th.com:2095
malware.porn-th.com:443
malware.porn-th.com:2053
malware.porn-th.com:2083
malware.porn-th.com:2087
malware.porn-th.com:2096
malware.porn-th.com:8443
conti.porn-th.com:80
conti.porn-th.com:22
conti.porn-th.com:8080
conti.porn-th.com:8880
conti.porn-th.com:2052
conti.porn-th.com:2082
conti.porn-th.com:2086
conti.porn-th.com:2095
conti.porn-th.com:443
conti.porn-th.com:2053
conti.porn-th.com:2083
conti.porn-th.com:2087
conti.porn-th.com:2096
conti.porn-th.com:8443
sodinokibi.porn-th.com:80
sodinokibi.porn-th.com:22
sodinokibi.porn-th.com:8080
sodinokibi.porn-th.com:8880
sodinokibi.porn-th.com:2052
sodinokibi.porn-th.com:2082
sodinokibi.porn-th.com:2086
sodinokibi.porn-th.com:2095
sodinokibi.porn-th.com:443
sodinokibi.porn-th.com:2053
sodinokibi.porn-th.com:2083
sodinokibi.porn-th.com:2087
sodinokibi.porn-th.com:2096
sodinokibi.porn-th.com:8443

Mutex

SANg1DVpHZRi

Attributes

delay
0
install
true
install_file
fcmtjqb.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/0x000d00000001c645-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1892	fcmtjqb.exe
3440	fcmtjqb.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	fcmtjqb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.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	fcmtjqb.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5332	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
4884	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
Token: SeDebugPrivilege	1892	fcmtjqb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3388 wrote to memory of 6076	3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe	86
PID 3388 wrote to memory of 2636	3388	5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe	87
PID 6076 wrote to memory of 4884	6076	cmd.exe	90
PID 2636 wrote to memory of 5332	2636	cmd.exe	91
PID 2636 wrote to memory of 3440	2636	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe
"C:\Users\Admin\AppData\Local\Temp\5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fcmtjqb" /tr '"C:\Users\Admin\AppData\Roaming\fcmtjqb.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6076
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fcmtjqb" /tr '"C:\Users\Admin\AppData\Roaming\fcmtjqb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4884
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE4F7.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5332
- - C:\Users\Admin\AppData\Roaming\fcmtjqb.exe
    "C:\Users\Admin\AppData\Roaming\fcmtjqb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3440

C:\Users\Admin\AppData\Roaming\fcmtjqb.exe
"C:\Users\Admin\AppData\Roaming\fcmtjqb.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1892

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

tmpE4F7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpE4F7.tmp.bat
Size 151B
SHA256 4460646e7d2c5501593ad7e40f916079916cf91f1058d556f329f55793867c61
MD5 0ab72c37a9a569028ffef08d263325de
SHA1 b5c9d80a2ce83e21ab4d44eccf57b556f3fc71b6
SHA512 d4f24e932625dad15c5702bbf9340de0acd8609effd05867c17b02f120afb3c6bd643053a410c96641b3c5f0ed534e518e39006998d8de50eb91185e1c7a3a00
TLSH
T142C08C4362C6EA6E380A18230AFA959D92626C1D3E44AB20C705444D1280888E0AA381
MD5 SHA1 SHA512 TLSH

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fcmtjqb.exe

Path C:\Users\Admin\AppData\Roaming\fcmtjqb.exe
Size 45KB
SHA256 5541f83aa83d19691c029d11c455b5090e1266294d8520a03e9633ba593ae626
MD5 1c772e7d7858fa08bd321f3cc98a42d4
SHA1 87d3b4afb49e4e4846d607dd9c6d1814abe254ed
SHA512 5f933a62730b48a3dbe09d2ce35f127961547595f276b2e6c8ff0d65369d701ac31891aa841c3dbe2ef325c506c96c9f0ed5e960ffb4c75e5b4f9ffba26b11f3
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9Xozfy3CKPI0cjbpgX3iog+HAdC+fYCBDZ8x:0uPrpT/qY2ZTR0sbmXSog+HPk/d8x
TLSH
T187232C003BE8C12BF2BF4B789DF26145457AF6633A03D6891CC4119B5623FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1892-12-0x0000000074ED0000-0x000000007568C000-memory.dmp

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memory/1892-14-0x0000000074ED0000-0x000000007568C000-memory.dmp

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memory/3388-0-0x0000000075052000-0x0000000075053000-memory.dmp

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memory/3388-1-0x0000000000C30000-0x0000000000C42000-memory.dmp

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memory/3388-2-0x0000000075040000-0x00000000757FC000-memory.dmp

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memory/3388-3-0x0000000005720000-0x00000000057BC000-memory.dmp

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memory/3388-8-0x0000000075040000-0x00000000757FC000-memory.dmp

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