asyncrat | 4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae

Analysis

max time kernel
6s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 11:07

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General

Target
4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
Size 45KB
Sample260803-m8f7psgd98
SHA256 4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae
MD5 25aafa8ec8aec800a66c2d7d8000e936
SHA1 72e93606bb993323e610fdc394a575fdcb92c27c
SHA512 84e7f8ca51ff65b7d85e0c403474fa0904466c3d7fcbf5db8dc21e3f1b446896eeb2868fa9fe6364e8ff8eee7fe67516fba9db9ca8b41f9b77fac98461727286
SSDEEP 768:5udApTNctooWUS7C+mo2qtfK1HJCOPIcazjbHgo3ig4KVUmuvd2bt4nBDZ0x:5udApTNmU2PFA3ca3bAoSyUJVwt4Bd0x
TLSH
T161232C003BE8822BF2BE4F7898F26145867EF6673603D58E1CC451DB5613BC69642AFD
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

xemsexmy.org:80
xemsexmy.org:22
xemsexmy.org:8080
xemsexmy.org:8880
xemsexmy.org:2052
xemsexmy.org:2082
xemsexmy.org:2086
xemsexmy.org:2095
xemsexmy.org:443
xemsexmy.org:2053
xemsexmy.org:2083
xemsexmy.org:2087
xemsexmy.org:2096
xemsexmy.org:8443
www.xemsexmy.org:80
www.xemsexmy.org:22
www.xemsexmy.org:8080
www.xemsexmy.org:8880
www.xemsexmy.org:2052
www.xemsexmy.org:2082
www.xemsexmy.org:2086
www.xemsexmy.org:2095
www.xemsexmy.org:443
www.xemsexmy.org:2053
www.xemsexmy.org:2083
www.xemsexmy.org:2087
www.xemsexmy.org:2096
www.xemsexmy.org:8443
conti.xemsexmy.org:80
conti.xemsexmy.org:22
conti.xemsexmy.org:8080
conti.xemsexmy.org:8880
conti.xemsexmy.org:2052
conti.xemsexmy.org:2082
conti.xemsexmy.org:2086
conti.xemsexmy.org:2095
conti.xemsexmy.org:443
conti.xemsexmy.org:2053
conti.xemsexmy.org:2083
conti.xemsexmy.org:2087
conti.xemsexmy.org:2096
conti.xemsexmy.org:8443
agenttesla.xemsexmy.org:80
agenttesla.xemsexmy.org:22
agenttesla.xemsexmy.org:8080
agenttesla.xemsexmy.org:8880
agenttesla.xemsexmy.org:2052
agenttesla.xemsexmy.org:2082
agenttesla.xemsexmy.org:2086
agenttesla.xemsexmy.org:2095
agenttesla.xemsexmy.org:443
agenttesla.xemsexmy.org:2053
agenttesla.xemsexmy.org:2083
agenttesla.xemsexmy.org:2087
agenttesla.xemsexmy.org:2096
agenttesla.xemsexmy.org:8443

Mutex

glHAC53U50UC

Attributes

delay
0
install
true
install_file
88vbfm.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/0x0005000000016b47-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2440	88vbfm.exe
4120	88vbfm.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
4756	cmd.exe
5468	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	88vbfm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	88vbfm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.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
4424	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
2216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
Token: SeDebugPrivilege	2440	88vbfm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 5468	3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe	89
PID 3948 wrote to memory of 4756	3948	4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe	91
PID 5468 wrote to memory of 2216	5468	cmd.exe	93
PID 4756 wrote to memory of 4424	4756	cmd.exe	94
PID 4756 wrote to memory of 4120	4756	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe
"C:\Users\Admin\AppData\Local\Temp\4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "88vbfm" /tr '"C:\Users\Admin\AppData\Roaming\88vbfm.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5468
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "88vbfm" /tr '"C:\Users\Admin\AppData\Roaming\88vbfm.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2216
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp85B1.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4756
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4424
- - C:\Users\Admin\AppData\Roaming\88vbfm.exe
    "C:\Users\Admin\AppData\Roaming\88vbfm.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4120

C:\Users\Admin\AppData\Roaming\88vbfm.exe
"C:\Users\Admin\AppData\Roaming\88vbfm.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2440

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:2704

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

tmp85B1.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp85B1.tmp.bat
Size 150B
SHA256 4838187dfd7b67fcc79a2a0c8ef911e472d5c52b1761bc6938ba23c6cb02da20
MD5 2ecac67d212d65de866024881024db78
SHA1 288baf1f8526718672d676295ae98b4e6918134f
SHA512 07cade01173bc347626154d1c030ad8da07db7d881e85a3a61771a2ab6c9a14bcf933de5b007004a6721188594bdbf3b445a8ddc96cfe8dd45f0f62b9f24a2d1
TLSH
T1B8C08C9265C5AA0F2805947B03BAD48C916269193F88AB008388440D12C2859E0D9286
MD5 SHA1 SHA512 TLSH

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88vbfm.exe

Path C:\Users\Admin\AppData\Roaming\88vbfm.exe
Size 45KB
SHA256 4c0b6d3df37a732561b4096ed4744bb0ae5a19a60d96d9ce47454b8c686951ae
MD5 25aafa8ec8aec800a66c2d7d8000e936
SHA1 72e93606bb993323e610fdc394a575fdcb92c27c
SHA512 84e7f8ca51ff65b7d85e0c403474fa0904466c3d7fcbf5db8dc21e3f1b446896eeb2868fa9fe6364e8ff8eee7fe67516fba9db9ca8b41f9b77fac98461727286
SSDEEP 768:5udApTNctooWUS7C+mo2qtfK1HJCOPIcazjbHgo3ig4KVUmuvd2bt4nBDZ0x:5udApTNmU2PFA3ca3bAoSyUJVwt4Bd0x
TLSH
T161232C003BE8822BF2BE4F7898F26145867EF6673603D58E1CC451DB5613BC69642AFD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2440-12-0x0000000075170000-0x000000007592C000-memory.dmp

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memory/2440-14-0x0000000075170000-0x000000007592C000-memory.dmp

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memory/3948-0-0x0000000075182000-0x0000000075183000-memory.dmp

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memory/3948-1-0x0000000000270000-0x0000000000282000-memory.dmp

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memory/3948-2-0x0000000075170000-0x000000007592C000-memory.dmp

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memory/3948-3-0x0000000004E00000-0x0000000004E9C000-memory.dmp

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memory/3948-9-0x0000000075170000-0x000000007592C000-memory.dmp

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