asyncrat | 31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58

Analysis

max time kernel
148s
max time network
147s
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, 08:41

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General

Target
31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
Size 45KB
Sample260804-klpt8a1wfv
SHA256 31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58
MD5 13e343e15f53bf775414765622349559
SHA1 a8c7a5e1c7d3f8fd1df9ab4b22141d8fadb917ce
SHA512 b63800dd8415cfd5597c3dc2459e4977385c444ca3a90993fba0ec39940267bcfa058d1ec9bf4022219a68fb8517061d95eb283d5cea067d814e97c0de20fa24
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1e/ycD3APIMzjbAgX3c4kiSRSnEDPuCrwTFBDZUx:cu6YepTPso2vq+3lM3bnXs4ksnXUwvdW
TLSH
T1BB232B003BE8812BF2BE5FB898F26145867AF1677603D64D1CC451DB4A23FC69A426FD
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
emotet.xcavengon.click:80
emotet.xcavengon.click:22
emotet.xcavengon.click:8080
emotet.xcavengon.click:8880
emotet.xcavengon.click:2052
emotet.xcavengon.click:2082
emotet.xcavengon.click:2086
emotet.xcavengon.click:2095
emotet.xcavengon.click:443
emotet.xcavengon.click:2053
emotet.xcavengon.click:2083
emotet.xcavengon.click:2087
emotet.xcavengon.click:2096
emotet.xcavengon.click:8443
nanocore.xcavengon.click:80
nanocore.xcavengon.click:22
nanocore.xcavengon.click:8080
nanocore.xcavengon.click:8880
nanocore.xcavengon.click:2052
nanocore.xcavengon.click:2082
nanocore.xcavengon.click:2086
nanocore.xcavengon.click:2095
nanocore.xcavengon.click:443
nanocore.xcavengon.click:2053
nanocore.xcavengon.click:2083
nanocore.xcavengon.click:2087
nanocore.xcavengon.click:2096
nanocore.xcavengon.click:8443
clop.xcavengon.click:80
clop.xcavengon.click:22
clop.xcavengon.click:8080
clop.xcavengon.click:8880
clop.xcavengon.click:2052
clop.xcavengon.click:2082
clop.xcavengon.click:2086
clop.xcavengon.click:2095
clop.xcavengon.click:443
clop.xcavengon.click:2053
clop.xcavengon.click:2083
clop.xcavengon.click:2087
clop.xcavengon.click:2096
clop.xcavengon.click:8443

Mutex

nizwtaBXE2oQ

Attributes

delay
0
install
true
install_file
xym0b79t.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/0x000d00000001c516-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5464	xym0b79t.exe
1576	xym0b79t.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	7	104.21.10.8:22
SSH destination	8	172.67.189.217:22

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
4376	cmd.exe
4172	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xym0b79t.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xym0b79t.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4220	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
3836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
Token: SeDebugPrivilege	5464	xym0b79t.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1436 wrote to memory of 4376	1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe	89
PID 1436 wrote to memory of 4172	1436	31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe	90
PID 4172 wrote to memory of 4220	4172	cmd.exe	93
PID 4376 wrote to memory of 3836	4376	cmd.exe	94
PID 4172 wrote to memory of 1576	4172	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe
"C:\Users\Admin\AppData\Local\Temp\31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "xym0b79t" /tr '"C:\Users\Admin\AppData\Roaming\xym0b79t.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "xym0b79t" /tr '"C:\Users\Admin\AppData\Roaming\xym0b79t.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3836
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp428D.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4172
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4220
- - C:\Users\Admin\AppData\Roaming\xym0b79t.exe
    "C:\Users\Admin\AppData\Roaming\xym0b79t.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1576

C:\Users\Admin\AppData\Roaming\xym0b79t.exe
"C:\Users\Admin\AppData\Roaming\xym0b79t.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5464

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

tmp428D.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp428D.tmp.bat
Size 152B
SHA256 a6905ce8b3095f069bcf566bb875dfb77f8f28d4e9149b7c90ddf3a6332cde18
MD5 5d4569c4cdc238fc1e3fc85879e66271
SHA1 a9d709ea8a065570a2840ed9065f193119848d13
SHA512 e3da4483cfcef0627297d2a81f2bcba73b823ae955b312ea37183a292bdc18f335e046dccbc1d368ded5294281d406a9e161f606800f33ccdd435b728c8bc0f3
TLSH
T180C02B4256C5FE1E380524530AFAD4DDD2B26C193F50FB40C304408DB29084CF0DB345
MD5 SHA1 SHA512 TLSH

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xym0b79t.exe

Path C:\Users\Admin\AppData\Roaming\xym0b79t.exe
Size 45KB
SHA256 31cfbdc27545ef63d6ce43c2e6f222d918baeda28c2c2c819d86ec9ac1c05f58
MD5 13e343e15f53bf775414765622349559
SHA1 a8c7a5e1c7d3f8fd1df9ab4b22141d8fadb917ce
SHA512 b63800dd8415cfd5597c3dc2459e4977385c444ca3a90993fba0ec39940267bcfa058d1ec9bf4022219a68fb8517061d95eb283d5cea067d814e97c0de20fa24
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1e/ycD3APIMzjbAgX3c4kiSRSnEDPuCrwTFBDZUx:cu6YepTPso2vq+3lM3bnXs4ksnXUwvdW
TLSH
T1BB232B003BE8812BF2BE5FB898F26145867AF1677603D64D1CC451DB4A23FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1436-0-0x00000000747C2000-0x00000000747C3000-memory.dmp

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memory/1436-1-0x00000000001B0000-0x00000000001C2000-memory.dmp

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memory/1436-2-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/1436-3-0x0000000004BE0000-0x0000000004C7C000-memory.dmp

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memory/1436-8-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/5464-12-0x0000000074640000-0x0000000074DFC000-memory.dmp

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memory/5464-14-0x0000000074640000-0x0000000074DFC000-memory.dmp

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