asyncrat | f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6

Analysis

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

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/07/2026, 11:08

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General

Target
f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
Size 45KB
Sample260716-m8q2xae13w
SHA256 f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6
MD5 3e78001c0f4bfb5b98ca0222b743ec61
SHA1 3c3935581d00fbb7e2917c34e165a7da8b3d577a
SHA512 f2866275323a58d157af1bcb7209aaab1f8895ca224f0230ee9af4fbf82747138837072a5b45d1becf9c629b7a8fe463fc61ae95b08ab55562fc95799efc3e85
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9m6R8aI3OPIOzjbLgK3iMpM4Gj7ixmBatOBDZ8x:0u1YJTHcw2Z+FO3O3b0KS8Rx+Vd8x
TLSH
T164232B003BE8822BF2BE5F78ADF26145867AF5673603D54A1CC451DB4613FC68A426FD
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

fimsexnhatban.com:80
fimsexnhatban.com:22
fimsexnhatban.com:8080
fimsexnhatban.com:8880
fimsexnhatban.com:2052
fimsexnhatban.com:2082
fimsexnhatban.com:2086
fimsexnhatban.com:2095
fimsexnhatban.com:443
fimsexnhatban.com:2053
fimsexnhatban.com:2083
fimsexnhatban.com:2087
fimsexnhatban.com:2096
fimsexnhatban.com:8443
www.fimsexnhatban.com:80
www.fimsexnhatban.com:22
www.fimsexnhatban.com:8080
www.fimsexnhatban.com:8880
www.fimsexnhatban.com:2052
www.fimsexnhatban.com:2082
www.fimsexnhatban.com:2086
www.fimsexnhatban.com:2095
www.fimsexnhatban.com:443
www.fimsexnhatban.com:2053
www.fimsexnhatban.com:2083
www.fimsexnhatban.com:2087
www.fimsexnhatban.com:2096
www.fimsexnhatban.com:8443
malware.fimsexnhatban.com:80
malware.fimsexnhatban.com:22
malware.fimsexnhatban.com:8080
malware.fimsexnhatban.com:8880
malware.fimsexnhatban.com:2052
malware.fimsexnhatban.com:2082
malware.fimsexnhatban.com:2086
malware.fimsexnhatban.com:2095
malware.fimsexnhatban.com:443
malware.fimsexnhatban.com:2053
malware.fimsexnhatban.com:2083
malware.fimsexnhatban.com:2087
malware.fimsexnhatban.com:2096
malware.fimsexnhatban.com:8443
nanocore.fimsexnhatban.com:80
nanocore.fimsexnhatban.com:22
nanocore.fimsexnhatban.com:8080
nanocore.fimsexnhatban.com:8880
nanocore.fimsexnhatban.com:2052
nanocore.fimsexnhatban.com:2082
nanocore.fimsexnhatban.com:2086
nanocore.fimsexnhatban.com:2095
nanocore.fimsexnhatban.com:443
nanocore.fimsexnhatban.com:2053
nanocore.fimsexnhatban.com:2083
nanocore.fimsexnhatban.com:2087
nanocore.fimsexnhatban.com:2096
nanocore.fimsexnhatban.com:8443

Mutex

ohs5frwIQ3Jw

Attributes

delay
0
install
true
install_file
3vpo4k.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/0x001000000001c3f1-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4060	3vpo4k.exe
1872	3vpo4k.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3vpo4k.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3vpo4k.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.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
3804	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
4452	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
Token: SeDebugPrivilege	4060	3vpo4k.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 3252	4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe	87
PID 4496 wrote to memory of 3548	4496	f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe	88
PID 3252 wrote to memory of 4452	3252	cmd.exe	91
PID 3548 wrote to memory of 3804	3548	cmd.exe	92
PID 3548 wrote to memory of 1872	3548	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe
"C:\Users\Admin\AppData\Local\Temp\f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "3vpo4k" /tr '"C:\Users\Admin\AppData\Roaming\3vpo4k.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3252
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "3vpo4k" /tr '"C:\Users\Admin\AppData\Roaming\3vpo4k.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4452
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFC6C.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3548
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3804
- - C:\Users\Admin\AppData\Roaming\3vpo4k.exe
    "C:\Users\Admin\AppData\Roaming\3vpo4k.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1872

C:\Users\Admin\AppData\Roaming\3vpo4k.exe
"C:\Users\Admin\AppData\Roaming\3vpo4k.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4060

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

tmpFC6C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpFC6C.tmp.bat
Size 150B
SHA256 16205abe6f61b958b5e7994bf2d4bcec310f1e778c611430dfb8f75e042834ca
MD5 8ecae552f5833c858495152c424d915f
SHA1 3d14fe00e499708d1fea7d75779532b8711f5e1f
SHA512 a0dbfbde1ae28de5d156a5a91481632ead9bf379c689f4f45aabbd9a7bd5f3524b3304168f67812369d04bf27ee58fb29757d373e2beac58dba94ff741905dd1
TLSH
T168C08C5291C9EA9E2915641302FAE48CA162685A3F40AB008B08880E1280848E499241
MD5 SHA1 SHA512 TLSH

Submit Download

3vpo4k.exe

Path C:\Users\Admin\AppData\Roaming\3vpo4k.exe
Size 45KB
SHA256 f3a66ffe27668cdb4fc27ed95909511bde8ee263d1211609539ebb283aa355b6
MD5 3e78001c0f4bfb5b98ca0222b743ec61
SHA1 3c3935581d00fbb7e2917c34e165a7da8b3d577a
SHA512 f2866275323a58d157af1bcb7209aaab1f8895ca224f0230ee9af4fbf82747138837072a5b45d1becf9c629b7a8fe463fc61ae95b08ab55562fc95799efc3e85
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9m6R8aI3OPIOzjbLgK3iMpM4Gj7ixmBatOBDZ8x:0u1YJTHcw2Z+FO3O3b0KS8Rx+Vd8x
TLSH
T164232B003BE8822BF2BE5F78ADF26145867AF5673603D54A1CC451DB4613FC68A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4060-12-0x0000000074BE0000-0x000000007539C000-memory.dmp

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memory/4060-14-0x0000000074BE0000-0x000000007539C000-memory.dmp

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memory/4496-0-0x0000000074D62000-0x0000000074D63000-memory.dmp

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memory/4496-1-0x00000000008E0000-0x00000000008F2000-memory.dmp

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memory/4496-2-0x0000000074D50000-0x000000007550C000-memory.dmp

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memory/4496-3-0x0000000005410000-0x00000000054AC000-memory.dmp

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memory/4496-8-0x0000000074D50000-0x000000007550C000-memory.dmp

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