asyncrat | 25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 15:11

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
Size 45KB
Sample260804-sk4wra1sav
SHA256 25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3
MD5 bca7a0b51259f9bb48c0583366cef15c
SHA1 353bb6b326f7132b3f2e0a3d01f70f6f15959a05
SHA512 7dc3588da4ab175ffc1d6f2f85e8c9a13126367585cb2011839a49f133f86ee5d9540a42d8aa447a64b99ba9110ae5e464ca2a88017af578f194b7a91ebe1ac9
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q92CHyTtUPIJzjbjgX3iBbmeqkphnBDZ8x:0u1YJTHcw2BnjJ3b8XSBbHphBd8x
TLSH
T1BA231A0037E8822BF2BE5F78ADF25145867AF5672A03D64A1CC441DB5713FC68A426FE
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
socgholish.xcavengon.click:80
socgholish.xcavengon.click:22
socgholish.xcavengon.click:8080
socgholish.xcavengon.click:8880
socgholish.xcavengon.click:2052
socgholish.xcavengon.click:2082
socgholish.xcavengon.click:2086
socgholish.xcavengon.click:2095
socgholish.xcavengon.click:443
socgholish.xcavengon.click:2053
socgholish.xcavengon.click:2083
socgholish.xcavengon.click:2087
socgholish.xcavengon.click:2096
socgholish.xcavengon.click:8443
industroyer.xcavengon.click:80
industroyer.xcavengon.click:22
industroyer.xcavengon.click:8080
industroyer.xcavengon.click:8880
industroyer.xcavengon.click:2052
industroyer.xcavengon.click:2082
industroyer.xcavengon.click:2086
industroyer.xcavengon.click:2095
industroyer.xcavengon.click:443
industroyer.xcavengon.click:2053
industroyer.xcavengon.click:2083
industroyer.xcavengon.click:2087
industroyer.xcavengon.click:2096
industroyer.xcavengon.click:8443

Mutex

rW8g6HqHsFIB

Attributes

delay
0
install
true
install_file
cyzkg3.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/0x000e00000001c57f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
264	cyzkg3.exe
2628	cyzkg3.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	9	172.67.189.217:22
SSH destination	10	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
3100	cmd.exe
5000	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	cyzkg3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cyzkg3.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5800	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
3316	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
Token: SeDebugPrivilege	264	cyzkg3.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 3100	3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe	89
PID 3856 wrote to memory of 5000	3856	25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe	90
PID 5000 wrote to memory of 5800	5000	cmd.exe	93
PID 3100 wrote to memory of 3316	3100	cmd.exe	94
PID 5000 wrote to memory of 2628	5000	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe
"C:\Users\Admin\AppData\Local\Temp\25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cyzkg3" /tr '"C:\Users\Admin\AppData\Roaming\cyzkg3.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "cyzkg3" /tr '"C:\Users\Admin\AppData\Roaming\cyzkg3.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3316
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6632.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5000
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5800
- - C:\Users\Admin\AppData\Roaming\cyzkg3.exe
    "C:\Users\Admin\AppData\Roaming\cyzkg3.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2628

C:\Users\Admin\AppData\Roaming\cyzkg3.exe
"C:\Users\Admin\AppData\Roaming\cyzkg3.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:264

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:2056

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

tmp6632.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6632.tmp.bat
Size 150B
SHA256 3219f15be6c80ec5c96151d9188fb36f70ca6c5e43f171bcde1795cc4a8e1438
MD5 28ed5fc69f92ccfc1c7519f8bf121476
SHA1 80d9625afc07d06192ee075a0cedec7c3cf00a6b
SHA512 2e9845fb92752ac9e5157d052ed443ac695ebedddfe044af55fe51a6a2afd090be825a056ac20abf6cbf0d2a60b234654f264a5a46459406fd47bf4da07725fe
TLSH
T15BC02B8395C6EE4F2905241307FBD99C91FB6C2D3F40BB00C304400D2290448F0ED781
MD5 SHA1 SHA512 TLSH

Submit Download

cyzkg3.exe

Path C:\Users\Admin\AppData\Roaming\cyzkg3.exe
Size 45KB
SHA256 25c3bcb45185ef6a6648993fba7e6e5939d4f9fc63a89b254ccc90a9f250b6f3
MD5 bca7a0b51259f9bb48c0583366cef15c
SHA1 353bb6b326f7132b3f2e0a3d01f70f6f15959a05
SHA512 7dc3588da4ab175ffc1d6f2f85e8c9a13126367585cb2011839a49f133f86ee5d9540a42d8aa447a64b99ba9110ae5e464ca2a88017af578f194b7a91ebe1ac9
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q92CHyTtUPIJzjbjgX3iBbmeqkphnBDZ8x:0u1YJTHcw2BnjJ3b8XSBbHphBd8x
TLSH
T1BA231A0037E8822BF2BE5F78ADF25145867AF5672A03D64A1CC441DB5713FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/264-12-0x0000000074E10000-0x00000000755CC000-memory.dmp

Download

memory/264-14-0x0000000074E10000-0x00000000755CC000-memory.dmp

Download

memory/3856-0-0x0000000074F92000-0x0000000074F93000-memory.dmp

Download

memory/3856-1-0x00000000004A0000-0x00000000004B2000-memory.dmp

Download

memory/3856-2-0x0000000074F80000-0x000000007573C000-memory.dmp

Download

memory/3856-3-0x0000000004FD0000-0x000000000506C000-memory.dmp

Download

memory/3856-8-0x0000000074F80000-0x000000007573C000-memory.dmp

Download