asyncrat | 538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/07/2026, 09:46

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General

Target
538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
Size 45KB
Sample260718-lrrfnsax5w
SHA256 538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1
MD5 527500dd8a5bad34df3288f1812427d7
SHA1 ed9ca76033c47a3802c216be9b67ac413bb7a86f
SHA512 26010af8969070f33e27dd2bac5105a15e6f37f238e6001763ff4ff1a0e5f859ed357008365713e0910d0dfa5555fe7c0922d5d74d5ed9351ab6fdaee05d611a
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlplsNoPEaMPIcyjbHgX3iq4hmVVdzXmBDZMx:wuDWZTpMZSB2IsuEaxcebAXSfhmlodMx
TLSH
T106233C003BE8822BF2BE4F7899F26145467AF1637603D64D1CC412975713FC69A52AFE
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

sexnga.store:80
sexnga.store:22
sexnga.store:8080
sexnga.store:8880
sexnga.store:2052
sexnga.store:2082
sexnga.store:2086
sexnga.store:2095
sexnga.store:443
sexnga.store:2053
sexnga.store:2083
sexnga.store:2087
sexnga.store:2096
sexnga.store:8443
www.sexnga.store:80
www.sexnga.store:22
www.sexnga.store:8080
www.sexnga.store:8880
www.sexnga.store:2052
www.sexnga.store:2082
www.sexnga.store:2086
www.sexnga.store:2095
www.sexnga.store:443
www.sexnga.store:2053
www.sexnga.store:2083
www.sexnga.store:2087
www.sexnga.store:2096
www.sexnga.store:8443
malware.sexnga.store:80
malware.sexnga.store:22
malware.sexnga.store:8080
malware.sexnga.store:8880
malware.sexnga.store:2052
malware.sexnga.store:2082
malware.sexnga.store:2086
malware.sexnga.store:2095
malware.sexnga.store:443
malware.sexnga.store:2053
malware.sexnga.store:2083
malware.sexnga.store:2087
malware.sexnga.store:2096
malware.sexnga.store:8443
sobig.sexnga.store:80
sobig.sexnga.store:22
sobig.sexnga.store:8080
sobig.sexnga.store:8880
sobig.sexnga.store:2052
sobig.sexnga.store:2082
sobig.sexnga.store:2086
sobig.sexnga.store:2095
sobig.sexnga.store:443
sobig.sexnga.store:2053
sobig.sexnga.store:2083
sobig.sexnga.store:2087
sobig.sexnga.store:2096
sobig.sexnga.store:8443

Mutex

AaO4IKlDrAjK

Attributes

delay
0
install
true
install_file
pyhqc.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/0x000e00000001c4ec-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
620	pyhqc.exe
2568	pyhqc.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
5628	cmd.exe
1780	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pyhqc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pyhqc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2204	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
5380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
Token: SeDebugPrivilege	620	pyhqc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3728 wrote to memory of 5628	3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe	89
PID 3728 wrote to memory of 1780	3728	538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe	90
PID 5628 wrote to memory of 5380	5628	cmd.exe	93
PID 1780 wrote to memory of 2204	1780	cmd.exe	94
PID 1780 wrote to memory of 2568	1780	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe
"C:\Users\Admin\AppData\Local\Temp\538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "pyhqc" /tr '"C:\Users\Admin\AppData\Roaming\pyhqc.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5628
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "pyhqc" /tr '"C:\Users\Admin\AppData\Roaming\pyhqc.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5380
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEBD2.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2204
- - C:\Users\Admin\AppData\Roaming\pyhqc.exe
    "C:\Users\Admin\AppData\Roaming\pyhqc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2568

C:\Users\Admin\AppData\Roaming\pyhqc.exe
"C:\Users\Admin\AppData\Roaming\pyhqc.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:620

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

tmpEBD2.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpEBD2.tmp.bat
Size 149B
SHA256 61e270887406313f41b12b2c8700adc4a72050ff4f20f5513cd9681a535fc7b6
MD5 24f0967d06d29000ee32d84bba395d58
SHA1 2fc2789f878cb04b12f7c9917a821984c8a5ab8c
SHA512 b107756299b8c5667f918734cb2221ec3d1a01a378a679afd4ea99c67c7d99970bfa4577e0d6596951b8cac26675352b815d6605e81265c0fe2d0c83f31f6690
TLSH
T108C08C8251C6EA0E2906141306BA988EA166A9193F88AB44C30444992680448F4DA341
MD5 SHA1 SHA512 TLSH

Submit Download

pyhqc.exe

Path C:\Users\Admin\AppData\Roaming\pyhqc.exe
Size 45KB
SHA256 538ef450095c4f96b3a67a5e9920d6500dc56f34004520ab96dbaa62637333d1
MD5 527500dd8a5bad34df3288f1812427d7
SHA1 ed9ca76033c47a3802c216be9b67ac413bb7a86f
SHA512 26010af8969070f33e27dd2bac5105a15e6f37f238e6001763ff4ff1a0e5f859ed357008365713e0910d0dfa5555fe7c0922d5d74d5ed9351ab6fdaee05d611a
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlplsNoPEaMPIcyjbHgX3iq4hmVVdzXmBDZMx:wuDWZTpMZSB2IsuEaxcebAXSfhmlodMx
TLSH
T106233C003BE8822BF2BE4F7899F26145467AF1637603D64D1CC412975713FC69A52AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/620-12-0x0000000074DE0000-0x000000007559C000-memory.dmp

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memory/620-14-0x0000000074DE0000-0x000000007559C000-memory.dmp

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memory/3728-0-0x0000000074FC2000-0x0000000074FC3000-memory.dmp

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memory/3728-1-0x00000000001E0000-0x00000000001F2000-memory.dmp

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memory/3728-2-0x0000000074FB0000-0x000000007576C000-memory.dmp

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memory/3728-3-0x0000000004CF0000-0x0000000004D8C000-memory.dmp

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memory/3728-8-0x0000000074FB0000-0x000000007576C000-memory.dmp

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