asyncrat | 54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
19/09/2026, 10:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
Size 45KB
Sample260919-mlafmsbj4s
SHA256 54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7
MD5 c5502d004d74984b41ef0aa14844b63a
SHA1 a4257225b9d8508aad8e2506e18976000f42767b
SHA512 4e58febb3a6de989ab79a795fa862279168f093983e54daf8948a40de499bc27a29204a0d7414f7505ebf1ae79266d3fc07d326080712a9727844b4e45c3ab7c
SSDEEP 768:kuSOpTPTCFcWUeXa6mo2qAe9PLzizyvtLjZPIXzjbLgXiiwvKadPKh6+lEoVxfB8:kuSOpTPOP2u9HiGVjWX3b0XL63dPKcb5
TLSH
T19B232B003BE9812BF2BE4F7898F26145867AF6732603D54A1CC451DB5613FC6DA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

vnsextop1.com:80
vnsextop1.com:22
vnsextop1.com:8080
vnsextop1.com:8880
vnsextop1.com:2052
vnsextop1.com:2082
vnsextop1.com:2086
vnsextop1.com:2095
vnsextop1.com:443
vnsextop1.com:2053
vnsextop1.com:2083
vnsextop1.com:2087
vnsextop1.com:2096
vnsextop1.com:8443
www.vnsextop1.com:80
www.vnsextop1.com:22
www.vnsextop1.com:8080
www.vnsextop1.com:8880
www.vnsextop1.com:2052
www.vnsextop1.com:2082
www.vnsextop1.com:2086
www.vnsextop1.com:2095
www.vnsextop1.com:443
www.vnsextop1.com:2053
www.vnsextop1.com:2083
www.vnsextop1.com:2087
www.vnsextop1.com:2096
www.vnsextop1.com:8443
agenttesla.vnsextop1.com:80
agenttesla.vnsextop1.com:22
agenttesla.vnsextop1.com:8080
agenttesla.vnsextop1.com:8880
agenttesla.vnsextop1.com:2052
agenttesla.vnsextop1.com:2082
agenttesla.vnsextop1.com:2086
agenttesla.vnsextop1.com:2095
agenttesla.vnsextop1.com:443
agenttesla.vnsextop1.com:2053
agenttesla.vnsextop1.com:2083
agenttesla.vnsextop1.com:2087
agenttesla.vnsextop1.com:2096
agenttesla.vnsextop1.com:8443
hacker.vnsextop1.com:80
hacker.vnsextop1.com:22
hacker.vnsextop1.com:8080
hacker.vnsextop1.com:8880
hacker.vnsextop1.com:2052
hacker.vnsextop1.com:2082
hacker.vnsextop1.com:2086
hacker.vnsextop1.com:2095
hacker.vnsextop1.com:443
hacker.vnsextop1.com:2053
hacker.vnsextop1.com:2083
hacker.vnsextop1.com:2087
hacker.vnsextop1.com:2096
hacker.vnsextop1.com:8443
wannacry.vnsextop1.com:80
wannacry.vnsextop1.com:22
wannacry.vnsextop1.com:8080
wannacry.vnsextop1.com:8880
wannacry.vnsextop1.com:2052
wannacry.vnsextop1.com:2082
wannacry.vnsextop1.com:2086
wannacry.vnsextop1.com:2095
wannacry.vnsextop1.com:443
wannacry.vnsextop1.com:2053
wannacry.vnsextop1.com:2083
wannacry.vnsextop1.com:2087
wannacry.vnsextop1.com:2096
wannacry.vnsextop1.com:8443
malware.vnsextop1.com:80
malware.vnsextop1.com:22
malware.vnsextop1.com:8080
malware.vnsextop1.com:8880
malware.vnsextop1.com:2052
malware.vnsextop1.com:2082
malware.vnsextop1.com:2086
malware.vnsextop1.com:2095
malware.vnsextop1.com:443
malware.vnsextop1.com:2053
malware.vnsextop1.com:2083
malware.vnsextop1.com:2087
malware.vnsextop1.com:2096
malware.vnsextop1.com:8443

Mutex

7gtzKvZirphS

Attributes

delay
0
install
true
install_file
flfo.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/0x000d00000001c55e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3724	flfo.exe
5064	flfo.exe

Outbound SSH connection to public host 2 TTPs 1 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc
SSH destination	13	104.18.30.167:22

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
2656	cmd.exe
4232	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flfo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flfo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4892	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
4688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
Token: SeDebugPrivilege	3724	flfo.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 2656	688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe	89
PID 688 wrote to memory of 4232	688	54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe	90
PID 2656 wrote to memory of 4688	2656	cmd.exe	93
PID 4232 wrote to memory of 4892	4232	cmd.exe	94
PID 4232 wrote to memory of 5064	4232	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe
"C:\Users\Admin\AppData\Local\Temp\54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "flfo" /tr '"C:\Users\Admin\AppData\Roaming\flfo.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "flfo" /tr '"C:\Users\Admin\AppData\Roaming\flfo.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4688
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp408A.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4232
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4892
- - C:\Users\Admin\AppData\Roaming\flfo.exe
    "C:\Users\Admin\AppData\Roaming\flfo.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5064

C:\Users\Admin\AppData\Roaming\flfo.exe
"C:\Users\Admin\AppData\Roaming\flfo.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3724

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

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp408A.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp408A.tmp.bat
Size 148B
SHA256 4cc3561793671500eaa4faa37047c491f734e6fa483a763a61d3b38a282c1e63
MD5 4997acc3f767aa87dc9c311b21fb261d
SHA1 3f87097d8580dfc82762d32fefb4e706556d55d3
SHA512 04832eb73122706adb826c63f4874b66e78579467f57b4bfaeec1c146bb9faf0ac91fa6b1faf9ff3c1201036b71f9126c9eb893df9c0c02da1b556b494cf6751
TLSH
T113C08C4251C6AA1E2909285312BA988D92A3B85A3E80AB008B05408E2280488E0DA281
MD5 SHA1 SHA512 TLSH

Submit Download

flfo.exe

Path C:\Users\Admin\AppData\Roaming\flfo.exe
Size 45KB
SHA256 54c5b40ab90a7d68135de7db2342b372bcfb157ceb901b92fe78f45bbe6003e7
MD5 c5502d004d74984b41ef0aa14844b63a
SHA1 a4257225b9d8508aad8e2506e18976000f42767b
SHA512 4e58febb3a6de989ab79a795fa862279168f093983e54daf8948a40de499bc27a29204a0d7414f7505ebf1ae79266d3fc07d326080712a9727844b4e45c3ab7c
SSDEEP 768:kuSOpTPTCFcWUeXa6mo2qAe9PLzizyvtLjZPIXzjbLgXiiwvKadPKh6+lEoVxfB8:kuSOpTPOP2u9HiGVjWX3b0XL63dPKcb5
TLSH
T19B232B003BE9812BF2BE4F7898F26145867AF6732603D54A1CC451DB5613FC6DA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/688-0-0x0000000074DA2000-0x0000000074DA3000-memory.dmp

Download

memory/688-1-0x00000000005C0000-0x00000000005D2000-memory.dmp

Download

memory/688-2-0x0000000074D90000-0x000000007554C000-memory.dmp

Download

memory/688-3-0x0000000004FD0000-0x000000000506C000-memory.dmp

Download

memory/688-8-0x0000000074D90000-0x000000007554C000-memory.dmp

Download

memory/3724-12-0x0000000074D20000-0x00000000754DC000-memory.dmp

Download

memory/3724-14-0x0000000074D20000-0x00000000754DC000-memory.dmp

Download