asyncrat | fcd03b493c7d33d9da6c27cd4569e53f70d18bf2e34cee700fa1ebdee266f193

Analysis

max time kernel
148s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 01:08

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General

Target
oalsdasndm.exe
Size 45KB
Sample260804-bheqeaae56
SHA256 fcd03b493c7d33d9da6c27cd4569e53f70d18bf2e34cee700fa1ebdee266f193
MD5 ca7ad2b7c3f5864f2c84df8c92ba9077
SHA1 8ba8a2a6af6642d6e8589cc75e9cf236aec55204
SHA512 ab4d8fe0d9cca6341dc67a747f9a6be672479298e711cf5e225e05b3fd40b8bb42e0191caf4712f0b67e1e749f8793bb4bc9fa9c623b831eebb36f05264743fb
SSDEEP 768:5u1PVT1IbSHWU7PyFmo2q4mE4LwPEUKOPIBzjbwgz3if+edDYazfgpOazBDZLx:5u1PVT1AL2ivgq3B3b3zSftCkuVdLx
TLSH
T151230A003BE9812BF2BE4F789DF26145867AE2632603D68D2CC441DB5713FC696526EE
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

tatuajesparahombres.co/vi-vn/:80
tatuajesparahombres.co/vi-vn/:443
tatuajesparahombres.co/vi-vn/:7788
tatuajesparahombres.co/vi-vn/:7879
tatuajesparahombres.co/vi-vn/:3577
tatuajesparahombres.co/:80
tatuajesparahombres.co/:443
tatuajesparahombres.co/:7788
tatuajesparahombres.co/:7879
tatuajesparahombres.co/:3577
www.tatuajesparahombres.co/:80
www.tatuajesparahombres.co/:443
www.tatuajesparahombres.co/:7788
www.tatuajesparahombres.co/:7879
www.tatuajesparahombres.co/:3577

Mutex

CSjSud5EUtxN

Attributes

delay
3
install
true
install_file
oalsdasndm.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/0x0004000000000431-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2128	oalsdasndm.exe
1992	oalsdasndm.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
4256	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oalsdasndm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oalsdasndm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oalsdasndm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1348	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
2744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe
2884	oalsdasndm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	oalsdasndm.exe
Token: SeDebugPrivilege	2128	oalsdasndm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 3296	2884	oalsdasndm.exe	89
PID 2884 wrote to memory of 4256	2884	oalsdasndm.exe	91
PID 3296 wrote to memory of 2744	3296	cmd.exe	93
PID 4256 wrote to memory of 1348	4256	cmd.exe	94
PID 4256 wrote to memory of 1992	4256	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\oalsdasndm.exe
"C:\Users\Admin\AppData\Local\Temp\oalsdasndm.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "oalsdasndm" /tr '"C:\Users\Admin\AppData\Roaming\oalsdasndm.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 "oalsdasndm" /tr '"C:\Users\Admin\AppData\Roaming\oalsdasndm.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4E26.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1348
- - C:\Users\Admin\AppData\Roaming\oalsdasndm.exe
    "C:\Users\Admin\AppData\Roaming\oalsdasndm.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1992

C:\Users\Admin\AppData\Roaming\oalsdasndm.exe
"C:\Users\Admin\AppData\Roaming\oalsdasndm.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2128

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

tmp4E26.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp4E26.tmp.bat
Size 154B
SHA256 ab12c6031248b2659801ea19dc3ddfb5a3f6039699cca7d0f7b02e44a33a3566
MD5 18f805c6b12cea4a16a35ddadffed0f5
SHA1 c58589ef9e341b5acdbe29d103fd40ebc8b05bf8
SHA512 a307d5c53edd65086eecccaebebdae9f1a86c780bcc1f4fa62edc48cc9e23153df52fd9a620d9d8234b4c4189216fb0f180be4bd4045517b91850b3254fb9623
TLSH
T13FC02B4395C9FA1E7C09642302FBD58D92726D1E3F44FF20D704444D128088CF0DD342
MD5 SHA1 SHA512 TLSH

Submit Download

oalsdasndm.exe

Path C:\Users\Admin\AppData\Roaming\oalsdasndm.exe
Size 45KB
SHA256 fcd03b493c7d33d9da6c27cd4569e53f70d18bf2e34cee700fa1ebdee266f193
MD5 ca7ad2b7c3f5864f2c84df8c92ba9077
SHA1 8ba8a2a6af6642d6e8589cc75e9cf236aec55204
SHA512 ab4d8fe0d9cca6341dc67a747f9a6be672479298e711cf5e225e05b3fd40b8bb42e0191caf4712f0b67e1e749f8793bb4bc9fa9c623b831eebb36f05264743fb
SSDEEP 768:5u1PVT1IbSHWU7PyFmo2q4mE4LwPEUKOPIBzjbwgz3if+edDYazfgpOazBDZLx:5u1PVT1AL2ivgq3B3b3zSftCkuVdLx
TLSH
T151230A003BE9812BF2BE4F789DF26145867AE2632603D68D2CC441DB5713FC696526EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2128-12-0x00000000748B0000-0x000000007506C000-memory.dmp

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memory/2128-14-0x00000000748B0000-0x000000007506C000-memory.dmp

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memory/2884-0-0x00000000748C2000-0x00000000748C3000-memory.dmp

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memory/2884-1-0x0000000000590000-0x00000000005A2000-memory.dmp

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memory/2884-2-0x00000000748B0000-0x000000007506C000-memory.dmp

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memory/2884-3-0x0000000005120000-0x00000000051BC000-memory.dmp

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memory/2884-9-0x00000000748B0000-0x000000007506C000-memory.dmp

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