asyncrat | 4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 15:03

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General

Target
4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
Size 45KB
Sample260804-se25zazzdy
SHA256 4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362
MD5 794fdfb68a4a922d454347e0ef664ee4
SHA1 6c612706a5c76e63cbf9e42faea3a1b299b2ada2
SHA512 6412edfcb0457a07ee1e5abde3bdfb02d783dffb8675e0fc0129047eb7b3b832d210e3d1f92cb8b2e923f4382a7150f4f3ceb615c5284ef1972a35fd7a150fe1
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9sZoyTM4PIXAjbbgX3ir67zBDZ8x:0u1YJTHcw2dh0XobkXSW7Vd8x
TLSH
T190231B103BE8812BF2BE4B78ACF26245867AF1673603D58E1CC451DB5623FC59A426FD
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

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

Mutex

ktceNlL7OX5C

Attributes

delay
0
install
true
install_file
cws7ja.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/0x000e00000001c4d6-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1756	cws7ja.exe
1160	cws7ja.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	4	143.244.56.57:22
SSH destination	11	185.93.2.251:22

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
4688	cmd.exe
4144	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	cws7ja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cws7ja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.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
1620	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
4348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 4144	4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe	89
PID 4644 wrote to memory of 4688	4644	4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe	90
PID 4144 wrote to memory of 4348	4144	cmd.exe	93
PID 4688 wrote to memory of 1620	4688	cmd.exe	94
PID 4688 wrote to memory of 1160	4688	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe
"C:\Users\Admin\AppData\Local\Temp\4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cws7ja" /tr '"C:\Users\Admin\AppData\Roaming\cws7ja.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "cws7ja" /tr '"C:\Users\Admin\AppData\Roaming\cws7ja.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4348
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp31D4.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1620
- - C:\Users\Admin\AppData\Roaming\cws7ja.exe
    "C:\Users\Admin\AppData\Roaming\cws7ja.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1160

C:\Users\Admin\AppData\Roaming\cws7ja.exe
"C:\Users\Admin\AppData\Roaming\cws7ja.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1756

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

tmp31D4.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp31D4.tmp.bat
Size 150B
SHA256 cd4e9bc8157aa2d8814e3453184af39e697bff3236d164eec7ef4d838a60714b
MD5 1d326ae8886df7ef0858cbd575855f2c
SHA1 4d7c48838405621e0fcb73de2861516d95333035
SHA512 40b95da8ecfe22ac7cc759f3fff22d9c8d8a675236a545adabca115ab4a6d40c152213ad1be3d88f32ba4266d3c920fce829076d41c85a37e227829d19ae4585
TLSH
T1B9C08C5251CAAA4E6E0A141302BAD58CA16278693E44AB00C744408A2281889F4A9681
MD5 SHA1 SHA512 TLSH

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cws7ja.exe

Path C:\Users\Admin\AppData\Roaming\cws7ja.exe
Size 45KB
SHA256 4dd112c19fcbe25abe70167949d02a8f5a48500bfdf48670a51a5b0f44ce5362
MD5 794fdfb68a4a922d454347e0ef664ee4
SHA1 6c612706a5c76e63cbf9e42faea3a1b299b2ada2
SHA512 6412edfcb0457a07ee1e5abde3bdfb02d783dffb8675e0fc0129047eb7b3b832d210e3d1f92cb8b2e923f4382a7150f4f3ceb615c5284ef1972a35fd7a150fe1
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9sZoyTM4PIXAjbbgX3ir67zBDZ8x:0u1YJTHcw2dh0XobkXSW7Vd8x
TLSH
T190231B103BE8812BF2BE4B78ACF26245867AF1673603D58E1CC451DB5623FC59A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1756-12-0x00000000747C0000-0x0000000074F7C000-memory.dmp

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memory/1756-14-0x00000000747C0000-0x0000000074F7C000-memory.dmp

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memory/4644-0-0x00000000747D2000-0x00000000747D3000-memory.dmp

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memory/4644-1-0x0000000000F10000-0x0000000000F22000-memory.dmp

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memory/4644-2-0x00000000747C0000-0x0000000074F7C000-memory.dmp

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memory/4644-3-0x0000000005900000-0x000000000599C000-memory.dmp

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memory/4644-9-0x00000000747C0000-0x0000000074F7C000-memory.dmp

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