asyncrat | fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 14:20

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General

Target
fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
Size 45KB
Sample260710-rndcjadt3x
SHA256 fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382
MD5 fa5b7b88f49200f038c5eb0027532e9c
SHA1 759cdbe3e3c354337f8729835e5e2c064ef749fc
SHA512 076b4f48ae8a55f5698289a826f91a66159465c16a2dd2ff9e53d58bd9cc1f0f4e96f6011b7bbe76e4f8b45cf176e916706d5b718db3b4ef35483f7fccd54c03
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qADxJdxrPHuPIbzjb0g93i/A3hMQBTCrIC8BDZcx:UuKWgSJTwRf2TxR3b3bb9S/A3ienCade
TLSH
T161232B003BE8822BF2BE5FB899F25145467AF1637603D9492CC451DB5623FC6CA426FE
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

sexviet11.com:80
sexviet11.com:22
sexviet11.com:8080
sexviet11.com:8880
sexviet11.com:2052
sexviet11.com:2082
sexviet11.com:2086
sexviet11.com:2095
sexviet11.com:443
sexviet11.com:2053
sexviet11.com:2083
sexviet11.com:2087
sexviet11.com:2096
sexviet11.com:8443
www.sexviet11.com:80
www.sexviet11.com:22
www.sexviet11.com:8080
www.sexviet11.com:8880
www.sexviet11.com:2052
www.sexviet11.com:2082
www.sexviet11.com:2086
www.sexviet11.com:2095
www.sexviet11.com:443
www.sexviet11.com:2053
www.sexviet11.com:2083
www.sexviet11.com:2087
www.sexviet11.com:2096
www.sexviet11.com:8443
formbook.sexviet11.com:80
formbook.sexviet11.com:22
formbook.sexviet11.com:8080
formbook.sexviet11.com:8880
formbook.sexviet11.com:2052
formbook.sexviet11.com:2082
formbook.sexviet11.com:2086
formbook.sexviet11.com:2095
formbook.sexviet11.com:443
formbook.sexviet11.com:2053
formbook.sexviet11.com:2083
formbook.sexviet11.com:2087
formbook.sexviet11.com:2096
formbook.sexviet11.com:8443
malware.sexviet11.com:80
malware.sexviet11.com:22
malware.sexviet11.com:8080
malware.sexviet11.com:8880
malware.sexviet11.com:2052
malware.sexviet11.com:2082
malware.sexviet11.com:2086
malware.sexviet11.com:2095
malware.sexviet11.com:443
malware.sexviet11.com:2053
malware.sexviet11.com:2083
malware.sexviet11.com:2087
malware.sexviet11.com:2096
malware.sexviet11.com:8443
clop.sexviet11.com:80
clop.sexviet11.com:22
clop.sexviet11.com:8080
clop.sexviet11.com:8880
clop.sexviet11.com:2052
clop.sexviet11.com:2082
clop.sexviet11.com:2086
clop.sexviet11.com:2095
clop.sexviet11.com:443
clop.sexviet11.com:2053
clop.sexviet11.com:2083
clop.sexviet11.com:2087
clop.sexviet11.com:2096
clop.sexviet11.com:8443

Mutex

HNr0HJpKS1FJ

Attributes

delay
0
install
true
install_file
tguio6wk.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/0x002300000001c2ca-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2320	tguio6wk.exe
3440	tguio6wk.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	tguio6wk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tguio6wk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.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
5340	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
5192	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
Token: SeDebugPrivilege	2320	tguio6wk.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 4104	2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe	87
PID 2116 wrote to memory of 5376	2116	fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe	88
PID 4104 wrote to memory of 5192	4104	cmd.exe	91
PID 5376 wrote to memory of 5340	5376	cmd.exe	92
PID 5376 wrote to memory of 3440	5376	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe
"C:\Users\Admin\AppData\Local\Temp\fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tguio6wk" /tr '"C:\Users\Admin\AppData\Roaming\tguio6wk.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "tguio6wk" /tr '"C:\Users\Admin\AppData\Roaming\tguio6wk.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5192
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5068.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5376
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5340
- - C:\Users\Admin\AppData\Roaming\tguio6wk.exe
    "C:\Users\Admin\AppData\Roaming\tguio6wk.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3440

C:\Users\Admin\AppData\Roaming\tguio6wk.exe
"C:\Users\Admin\AppData\Roaming\tguio6wk.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2320

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

Replay Monitor

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Downloads

tmp5068.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5068.tmp.bat
Size 152B
SHA256 fe428467c384e9ee6a465f836b05d296ffdafd90c977555e98f4c3f8b530f470
MD5 5d7d5e888d47580ac1bf2db7c73c6279
SHA1 bf4fdfa96566c209a96d49f6e899440d02dd7104
SHA512 5b9b5cb038eb1cdea363c651f63059fc20000bfc33444b289296f3d6c97d3a6fb80a2512fd4815ded5f38b8b1208a01e44122b26b45c65fe57aed7d3fbad838c
TLSH
T1E9C02B4256CAFA8E3D09381302FBD9CCA1B2AC2A3F40BB50C744840F12C1C58F0ED349
MD5 SHA1 SHA512 TLSH

Submit Download

tguio6wk.exe

Path C:\Users\Admin\AppData\Roaming\tguio6wk.exe
Size 45KB
SHA256 fc8a4bc298862ebc1cc9b23b03484d479d096b7f44f3c8af49114fa178e4b382
MD5 fa5b7b88f49200f038c5eb0027532e9c
SHA1 759cdbe3e3c354337f8729835e5e2c064ef749fc
SHA512 076b4f48ae8a55f5698289a826f91a66159465c16a2dd2ff9e53d58bd9cc1f0f4e96f6011b7bbe76e4f8b45cf176e916706d5b718db3b4ef35483f7fccd54c03
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qADxJdxrPHuPIbzjb0g93i/A3hMQBTCrIC8BDZcx:UuKWgSJTwRf2TxR3b3bb9S/A3ienCade
TLSH
T161232B003BE8822BF2BE5FB899F25145467AF1637603D9492CC451DB5623FC6CA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2116-0-0x0000000075132000-0x0000000075133000-memory.dmp

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memory/2116-1-0x0000000000E40000-0x0000000000E52000-memory.dmp

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memory/2116-2-0x0000000075120000-0x00000000758DC000-memory.dmp

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memory/2116-3-0x00000000058E0000-0x000000000597C000-memory.dmp

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memory/2116-8-0x0000000075120000-0x00000000758DC000-memory.dmp

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memory/2320-12-0x0000000074FB0000-0x000000007576C000-memory.dmp

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memory/2320-14-0x0000000074FB0000-0x000000007576C000-memory.dmp

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