asyncrat | 506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/08/2026, 13:58

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General

Target
506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
Size 45KB
Sample260801-rablsa1sfx
SHA256 506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a
MD5 a85134a71c3625f73d6d0fe22726a7c8
SHA1 e8a4dfa59498aca6abdc27fb804b1ef508f2dea2
SHA512 5bd18a23f4c74fc685423b87a62398e00663719d036a4fb9c902bcbabc97de08551acbef16a71f4ea626b76a4a3d0738019cc22a2bb6bd2dda08047dd905db3a
SSDEEP 768:cuqb5TrIGuCWUoKXMmo2qQUhk6K7OOPIzzjbTg43ijOXyguxJQ/ds2xBDZUx:cuqb5TrhG2g6VO3z3bM4SjOpuxJedsC0
TLSH
T102232A003BE8812BF2BE5F78A8F26145467AF6633603D6491CC451DB5B13FC69A426FE
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

xcavengon.click:80
xcavengon.click:22
xcavengon.click:8080
xcavengon.click:8880
xcavengon.click:2052
xcavengon.click:2082
xcavengon.click:2086
xcavengon.click:2095
xcavengon.click:443
xcavengon.click:2053
xcavengon.click:2083
xcavengon.click:2087
xcavengon.click:2096
xcavengon.click:8443
www.xcavengon.click:80
www.xcavengon.click:22
www.xcavengon.click:8080
www.xcavengon.click:8880
www.xcavengon.click:2052
www.xcavengon.click:2082
www.xcavengon.click:2086
www.xcavengon.click:2095
www.xcavengon.click:443
www.xcavengon.click:2053
www.xcavengon.click:2083
www.xcavengon.click:2087
www.xcavengon.click:2096
www.xcavengon.click:8443
melissa.xcavengon.click:80
melissa.xcavengon.click:22
melissa.xcavengon.click:8080
melissa.xcavengon.click:8880
melissa.xcavengon.click:2052
melissa.xcavengon.click:2082
melissa.xcavengon.click:2086
melissa.xcavengon.click:2095
melissa.xcavengon.click:443
melissa.xcavengon.click:2053
melissa.xcavengon.click:2083
melissa.xcavengon.click:2087
melissa.xcavengon.click:2096
melissa.xcavengon.click:8443
klez.xcavengon.click:80
klez.xcavengon.click:22
klez.xcavengon.click:8080
klez.xcavengon.click:8880
klez.xcavengon.click:2052
klez.xcavengon.click:2082
klez.xcavengon.click:2086
klez.xcavengon.click:2095
klez.xcavengon.click:443
klez.xcavengon.click:2053
klez.xcavengon.click:2083
klez.xcavengon.click:2087
klez.xcavengon.click:2096
klez.xcavengon.click:8443
trickbot.xcavengon.click:80
trickbot.xcavengon.click:22
trickbot.xcavengon.click:8080
trickbot.xcavengon.click:8880
trickbot.xcavengon.click:2052
trickbot.xcavengon.click:2082
trickbot.xcavengon.click:2086
trickbot.xcavengon.click:2095
trickbot.xcavengon.click:443
trickbot.xcavengon.click:2053
trickbot.xcavengon.click:2083
trickbot.xcavengon.click:2087
trickbot.xcavengon.click:2096
trickbot.xcavengon.click:8443
sasser.xcavengon.click:80
sasser.xcavengon.click:22
sasser.xcavengon.click:8080
sasser.xcavengon.click:8880
sasser.xcavengon.click:2052
sasser.xcavengon.click:2082
sasser.xcavengon.click:2086
sasser.xcavengon.click:2095
sasser.xcavengon.click:443
sasser.xcavengon.click:2053
sasser.xcavengon.click:2083
sasser.xcavengon.click:2087
sasser.xcavengon.click:2096
sasser.xcavengon.click:8443

Mutex

oKgr7Q3fduC8

Attributes

delay
0
install
true
install_file
m4b4h.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/0x000f00000001c54b-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3212	m4b4h.exe
1504	m4b4h.exe

Outbound SSH connection to public host 2 TTPs 2 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	172.67.189.217:22
SSH destination	14	104.21.10.8:22

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
1972	cmd.exe
1512	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	m4b4h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	m4b4h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4976	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
1784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 1972	1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe	89
PID 1104 wrote to memory of 1512	1104	506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe	91
PID 1972 wrote to memory of 1784	1972	cmd.exe	93
PID 1512 wrote to memory of 4976	1512	cmd.exe	94
PID 1512 wrote to memory of 1504	1512	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe
"C:\Users\Admin\AppData\Local\Temp\506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "m4b4h" /tr '"C:\Users\Admin\AppData\Roaming\m4b4h.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "m4b4h" /tr '"C:\Users\Admin\AppData\Roaming\m4b4h.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1784
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7B41.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4976
- - C:\Users\Admin\AppData\Roaming\m4b4h.exe
    "C:\Users\Admin\AppData\Roaming\m4b4h.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1504

C:\Users\Admin\AppData\Roaming\m4b4h.exe
"C:\Users\Admin\AppData\Roaming\m4b4h.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3212

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

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Downloads

tmp7B41.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7B41.tmp.bat
Size 149B
SHA256 bdf36a06d5a4ebe484f0b563042101670fdeade1e92f69f3bdea6fa0c359a3a9
MD5 d75bbb7f96d47766bb14764186a0e902
SHA1 2fd98e4402c3d666c000a21bf56b8fd5c9ad97d8
SHA512 a5281e4a70c55868d5fa27b3ff4dfc50d3afdf0a1e617099697ca5e2c5efb5bfd965211d2739547876be341015b0aa6a3bb8cac3950d3a059cb8ee0cfe0e00b6
TLSH
T1D1C02B43A2C5FE4E6805246302FAD48DD1766C1D3FC0BB40C704410D6380449F4D9742
MD5 SHA1 SHA512 TLSH

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m4b4h.exe

Path C:\Users\Admin\AppData\Roaming\m4b4h.exe
Size 45KB
SHA256 506692949da6017c569316868589b6aad7dbcceaf83c72f361b4d2da8f9b598a
MD5 a85134a71c3625f73d6d0fe22726a7c8
SHA1 e8a4dfa59498aca6abdc27fb804b1ef508f2dea2
SHA512 5bd18a23f4c74fc685423b87a62398e00663719d036a4fb9c902bcbabc97de08551acbef16a71f4ea626b76a4a3d0738019cc22a2bb6bd2dda08047dd905db3a
SSDEEP 768:cuqb5TrIGuCWUoKXMmo2qQUhk6K7OOPIzzjbTg43ijOXyguxJQ/ds2xBDZUx:cuqb5TrhG2g6VO3z3bM4SjOpuxJedsC0
TLSH
T102232A003BE8812BF2BE5F78A8F26145467AF6633603D6491CC451DB5B13FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1104-0-0x00000000751E2000-0x00000000751E3000-memory.dmp

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memory/1104-1-0x0000000000060000-0x0000000000072000-memory.dmp

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memory/1104-2-0x00000000751D0000-0x000000007598C000-memory.dmp

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memory/1104-3-0x0000000004AB0000-0x0000000004B4C000-memory.dmp

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memory/1104-8-0x00000000751D0000-0x000000007598C000-memory.dmp

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memory/3212-12-0x0000000075060000-0x000000007581C000-memory.dmp

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memory/3212-14-0x0000000075060000-0x000000007581C000-memory.dmp

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