asyncrat | cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c

Analysis

max time kernel
148s
max time network
155s
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, 21:26

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General

Target
cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
Size 45KB
Sample260804-z981bsem9x
SHA256 cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c
MD5 bb23a18f373c2fd8631fd33f08a99ef4
SHA1 21bb89b9e3420fd4e1c2d778cda26ef976c812de
SHA512 7423d9a3e180e311d803bb3bb5d2f354d551219bd16ad028c3639918f13a992893139bb19bcd18e5f9e087c36a2bf9e9121d331bb0e46cd60e041e6694344b7f
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVQ0e3+Kv18iZPIezjbig13ikLY8vxB1wBDZEx:MuBGJTPho2n3T6iWe3bF1SQY8vxBQdEx
TLSH
T19E231A103BE98127F2BE4F7868F22145867AF6636603D5491CC451DB5713FC6CA43AEE
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
industroyer.vnsextop1.com:80
industroyer.vnsextop1.com:22
industroyer.vnsextop1.com:8080
industroyer.vnsextop1.com:8880
industroyer.vnsextop1.com:2052
industroyer.vnsextop1.com:2082
industroyer.vnsextop1.com:2086
industroyer.vnsextop1.com:2095
industroyer.vnsextop1.com:443
industroyer.vnsextop1.com:2053
industroyer.vnsextop1.com:2083
industroyer.vnsextop1.com:2087
industroyer.vnsextop1.com:2096
industroyer.vnsextop1.com:8443
ryuk.vnsextop1.com:80
ryuk.vnsextop1.com:22
ryuk.vnsextop1.com:8080
ryuk.vnsextop1.com:8880
ryuk.vnsextop1.com:2052
ryuk.vnsextop1.com:2082
ryuk.vnsextop1.com:2086
ryuk.vnsextop1.com:2095
ryuk.vnsextop1.com:443
ryuk.vnsextop1.com:2053
ryuk.vnsextop1.com:2083
ryuk.vnsextop1.com:2087
ryuk.vnsextop1.com:2096
ryuk.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

Uu5XkALHw6N3

Attributes

delay
0
install
true
install_file
tdrl.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/0x000f00000001c579-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4828	tdrl.exe
5148	tdrl.exe

Outbound SSH connection to public host 2 TTPs 4 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	17	175.110.122.12:22
SSH destination	21	175.110.122.12:22
SSH destination	14	175.110.122.12:22
SSH destination	15	175.110.122.12:22

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
4964	cmd.exe
5664	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	tdrl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tdrl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.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
1816	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
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 5664	4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe	89
PID 4260 wrote to memory of 4964	4260	cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe	91
PID 5664 wrote to memory of 4104	5664	cmd.exe	93
PID 4964 wrote to memory of 1816	4964	cmd.exe	94
PID 4964 wrote to memory of 5148	4964	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe
"C:\Users\Admin\AppData\Local\Temp\cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tdrl" /tr '"C:\Users\Admin\AppData\Roaming\tdrl.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5664
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "tdrl" /tr '"C:\Users\Admin\AppData\Roaming\tdrl.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4104
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2A62.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4964
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1816
- - C:\Users\Admin\AppData\Roaming\tdrl.exe
    "C:\Users\Admin\AppData\Roaming\tdrl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5148

C:\Users\Admin\AppData\Roaming\tdrl.exe
"C:\Users\Admin\AppData\Roaming\tdrl.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4828

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

tmp2A62.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp2A62.tmp.bat
Size 148B
SHA256 3eb31427521d175333d3d03e959a24f43e7e4aed94a627ea38a7d887a0514fb1
MD5 11cdaec20e558614f8c14ab449ba9515
SHA1 39f2cb6e2fd14392810989e36bcf894470071902
SHA512 2afd6fdc3d8856d5b2ad47f88250424124bf59011dd653bdbd8ac60f3b3b4a098d0189f8eb876e0772b911c08638a728de2233a6afdc330f6ec7684d7f802a00
TLSH
T103C02B82A1C5EE6F380D14131AFBE48CE1766D593FC0BB00C384440E22C148DF0ED341
MD5 SHA1 SHA512 TLSH

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tdrl.exe

Path C:\Users\Admin\AppData\Roaming\tdrl.exe
Size 45KB
SHA256 cb3b31e3ab12bacd3ac9dbe10db7851010572415765495ccd74200245133624c
MD5 bb23a18f373c2fd8631fd33f08a99ef4
SHA1 21bb89b9e3420fd4e1c2d778cda26ef976c812de
SHA512 7423d9a3e180e311d803bb3bb5d2f354d551219bd16ad028c3639918f13a992893139bb19bcd18e5f9e087c36a2bf9e9121d331bb0e46cd60e041e6694344b7f
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVQ0e3+Kv18iZPIezjbig13ikLY8vxB1wBDZEx:MuBGJTPho2n3T6iWe3bF1SQY8vxBQdEx
TLSH
T19E231A103BE98127F2BE4F7868F22145867AF6636603D5491CC451DB5713FC6CA43AEE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4260-0-0x0000000074E62000-0x0000000074E63000-memory.dmp

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memory/4260-1-0x0000000000DC0000-0x0000000000DD2000-memory.dmp

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memory/4260-2-0x0000000074E50000-0x000000007560C000-memory.dmp

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memory/4260-3-0x0000000005930000-0x00000000059CC000-memory.dmp

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memory/4260-8-0x0000000074E50000-0x000000007560C000-memory.dmp

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memory/4828-12-0x0000000074CE0000-0x000000007549C000-memory.dmp

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memory/4828-14-0x0000000074CE0000-0x000000007549C000-memory.dmp

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