asyncrat | a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e

Analysis

max time kernel
150s
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
05/09/2026, 14:00

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General

Target
a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
Size 45KB
Sample260905-rayfjsdm9v
SHA256 a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e
MD5 15bf4c586b8d07f86488c3180f29dd3e
SHA1 1d5b814fae32ef4b9c16c2776a5b96514ab795c1
SHA512 d5d699830f7de3b91449080e6388ec7f7c993fcc824d3d60778e2104415825601777feaa27e192cc2d57e8a8dca94f1f58445f4d43e5d994db69a06ad8178745
SSDEEP 768:4uBfJTMUyYUWUWBDimo2qVecP0pycvHPIjzjbjgX3i9Xd7vV2FmhAnBDZbx:4uBfJTMpv2NccMcvgj3b8XS9XdLV2U8/
TLSH
T199231B003BE8C237F2BE4F78A8F26145467AF6636603D5491CC451DB5623FC69A42AFD
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

vlxxtv.org:80
vlxxtv.org:22
vlxxtv.org:8080
vlxxtv.org:8880
vlxxtv.org:2052
vlxxtv.org:2082
vlxxtv.org:2086
vlxxtv.org:2095
vlxxtv.org:443
vlxxtv.org:2053
vlxxtv.org:2083
vlxxtv.org:2087
vlxxtv.org:2096
vlxxtv.org:8443
www.vlxxtv.org:80
www.vlxxtv.org:22
www.vlxxtv.org:8080
www.vlxxtv.org:8880
www.vlxxtv.org:2052
www.vlxxtv.org:2082
www.vlxxtv.org:2086
www.vlxxtv.org:2095
www.vlxxtv.org:443
www.vlxxtv.org:2053
www.vlxxtv.org:2083
www.vlxxtv.org:2087
www.vlxxtv.org:2096
www.vlxxtv.org:8443
sasser.vlxxtv.org:80
sasser.vlxxtv.org:22
sasser.vlxxtv.org:8080
sasser.vlxxtv.org:8880
sasser.vlxxtv.org:2052
sasser.vlxxtv.org:2082
sasser.vlxxtv.org:2086
sasser.vlxxtv.org:2095
sasser.vlxxtv.org:443
sasser.vlxxtv.org:2053
sasser.vlxxtv.org:2083
sasser.vlxxtv.org:2087
sasser.vlxxtv.org:2096
sasser.vlxxtv.org:8443
ursnif.vlxxtv.org:80
ursnif.vlxxtv.org:22
ursnif.vlxxtv.org:8080
ursnif.vlxxtv.org:8880
ursnif.vlxxtv.org:2052
ursnif.vlxxtv.org:2082
ursnif.vlxxtv.org:2086
ursnif.vlxxtv.org:2095
ursnif.vlxxtv.org:443
ursnif.vlxxtv.org:2053
ursnif.vlxxtv.org:2083
ursnif.vlxxtv.org:2087
ursnif.vlxxtv.org:2096
ursnif.vlxxtv.org:8443

Mutex

0vu7nGPzNRH7

Attributes

delay
0
install
true
install_file
q42z.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/0x0003000000008f19-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
6540	q42z.exe
4772	q42z.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
4580	cmd.exe
4512	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	q42z.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	q42z.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1404	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
3416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 120 wrote to memory of 4580	120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe	90
PID 120 wrote to memory of 4512	120	a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe	92
PID 4580 wrote to memory of 3416	4580	cmd.exe	94
PID 4512 wrote to memory of 1404	4512	cmd.exe	95
PID 4512 wrote to memory of 4772	4512	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe
"C:\Users\Admin\AppData\Local\Temp\a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "q42z" /tr '"C:\Users\Admin\AppData\Roaming\q42z.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "q42z" /tr '"C:\Users\Admin\AppData\Roaming\q42z.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3416
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9418.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4512
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1404
- - C:\Users\Admin\AppData\Roaming\q42z.exe
    "C:\Users\Admin\AppData\Roaming\q42z.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4772

C:\Users\Admin\AppData\Roaming\q42z.exe
"C:\Users\Admin\AppData\Roaming\q42z.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:6540

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

tmp9418.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9418.tmp.bat
Size 148B
SHA256 906b10591998471f55201fa54759a1eb9319ce1d612a558e5e9b271d04080dc4
MD5 71281ff40aefcaa56d32fc28c3eca8ad
SHA1 86cd61a4e28b3241c9b5a6d5264f9018650b9cff
SHA512 163f8d0853bc6217bc0faf5322d056ead42ef7f11c8dc5dd8fbae55abe082338eada691a436398a39c62cc2880b6429f513c22eba47b60b8af9a2afc525dacac
TLSH
T1A2C02B42A1C5EA1E2809681316FAD69CB1736C9D3F40FF50C744404E1680488F0D9341
MD5 SHA1 SHA512 TLSH

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q42z.exe

Path C:\Users\Admin\AppData\Roaming\q42z.exe
Size 45KB
SHA256 a61627434459b3e58c25963cabc1a9b0213d11a46ec01a640988ceab517e535e
MD5 15bf4c586b8d07f86488c3180f29dd3e
SHA1 1d5b814fae32ef4b9c16c2776a5b96514ab795c1
SHA512 d5d699830f7de3b91449080e6388ec7f7c993fcc824d3d60778e2104415825601777feaa27e192cc2d57e8a8dca94f1f58445f4d43e5d994db69a06ad8178745
SSDEEP 768:4uBfJTMUyYUWUWBDimo2qVecP0pycvHPIjzjbjgX3i9Xd7vV2FmhAnBDZbx:4uBfJTMpv2NccMcvgj3b8XS9XdLV2U8/
TLSH
T199231B003BE8C237F2BE4F78A8F26145467AF6636603D5491CC451DB5623FC69A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/120-0-0x0000000074DE2000-0x0000000074DE3000-memory.dmp

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memory/120-1-0x0000000000FF0000-0x0000000001002000-memory.dmp

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memory/120-2-0x0000000074DD0000-0x000000007558C000-memory.dmp

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memory/120-3-0x0000000005A20000-0x0000000005ABC000-memory.dmp

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memory/120-8-0x0000000074DD0000-0x000000007558C000-memory.dmp

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memory/6540-12-0x0000000074DD0000-0x000000007558C000-memory.dmp

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memory/6540-14-0x0000000074DD0000-0x000000007558C000-memory.dmp

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