asyncrat | a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86

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
02/08/2026, 05:10

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General

Target
a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
Size 45KB
Sample260802-ftwkhsde49
SHA256 a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86
MD5 b426399196a71f41397a95b2862df9e6
SHA1 e2992b7bea8a82f50e2282fc54c60f0dbfe30eb7
SHA512 9695b0970a4fff1f99f192b6a65edef122f05abe5566deb561b66ccd427d948a097e0f8d9505265901289d7c6cf062a10a8f513034d8c5a770de2da55a28f6a2
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1N8V1RpYEcPIazjb1gX3iCn+8sgy+kxFP2PmkBDZUx:cuR0JTPjY2+8VDeEha3bSXSfg02PvdUx
TLSH
T1D2232C003BE9813BF2BE4F78ADF26185867AE2633603D6491CC452975613FC69A436FD
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
connect.xcavengon.click:80
connect.xcavengon.click:22
connect.xcavengon.click:8080
connect.xcavengon.click:8880
connect.xcavengon.click:2052
connect.xcavengon.click:2082
connect.xcavengon.click:2086
connect.xcavengon.click:2095
connect.xcavengon.click:443
connect.xcavengon.click:2053
connect.xcavengon.click:2083
connect.xcavengon.click:2087
connect.xcavengon.click:2096
connect.xcavengon.click:8443
nimda.xcavengon.click:80
nimda.xcavengon.click:22
nimda.xcavengon.click:8080
nimda.xcavengon.click:8880
nimda.xcavengon.click:2052
nimda.xcavengon.click:2082
nimda.xcavengon.click:2086
nimda.xcavengon.click:2095
nimda.xcavengon.click:443
nimda.xcavengon.click:2053
nimda.xcavengon.click:2083
nimda.xcavengon.click:2087
nimda.xcavengon.click:2096
nimda.xcavengon.click:8443

Mutex

NFySyCmgPMcX

Attributes

delay
0
install
true
install_file
330w.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/0x000d00000001c46e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4196	330w.exe
1500	330w.exe

Outbound SSH connection to public host 2 TTPs 3 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	19	172.67.189.217:22
SSH destination	20	104.21.10.8:22
SSH destination	23	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
5408	cmd.exe
2080	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	330w.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	330w.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3104	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
572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
Token: SeDebugPrivilege	4196	330w.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1420 wrote to memory of 5408	1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe	89
PID 1420 wrote to memory of 2080	1420	a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe	91
PID 5408 wrote to memory of 572	5408	cmd.exe	93
PID 2080 wrote to memory of 3104	2080	cmd.exe	94
PID 2080 wrote to memory of 1500	2080	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe
"C:\Users\Admin\AppData\Local\Temp\a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "330w" /tr '"C:\Users\Admin\AppData\Roaming\330w.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5408
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "330w" /tr '"C:\Users\Admin\AppData\Roaming\330w.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:572
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp83FB.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2080
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3104
- - C:\Users\Admin\AppData\Roaming\330w.exe
    "C:\Users\Admin\AppData\Roaming\330w.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1500

C:\Users\Admin\AppData\Roaming\330w.exe
"C:\Users\Admin\AppData\Roaming\330w.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4196

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

tmp83FB.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp83FB.tmp.bat
Size 148B
SHA256 c596063fb88018e7cd51e43021b6c9b2ad9decc00925411b1806ab47b0a1930f
MD5 19ded82f9e60454ef37776cf328036ac
SHA1 491f49f6729197d2e142c0f7fb483664e882e12e
SHA512 556a623d698056cb09ff1224bcbcc4347a3ee999810dbbdef8828c5ae08154a0fb54bacd40bb85c4d1255c1f9c15f59d454be0abe8b21d561ed6970495a26611
TLSH
T1A5C08C8251CAAA8E690A543302BA988D9166AC193E82BB10C344400A2280498E09A282
MD5 SHA1 SHA512 TLSH

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330w.exe

Path C:\Users\Admin\AppData\Roaming\330w.exe
Size 45KB
SHA256 a37a3a3f9280d8b6ffdbae6b618203a9567f03f2402d8ac51e4e3a36d311bb86
MD5 b426399196a71f41397a95b2862df9e6
SHA1 e2992b7bea8a82f50e2282fc54c60f0dbfe30eb7
SHA512 9695b0970a4fff1f99f192b6a65edef122f05abe5566deb561b66ccd427d948a097e0f8d9505265901289d7c6cf062a10a8f513034d8c5a770de2da55a28f6a2
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1N8V1RpYEcPIazjb1gX3iCn+8sgy+kxFP2PmkBDZUx:cuR0JTPjY2+8VDeEha3bSXSfg02PvdUx
TLSH
T1D2232C003BE9813BF2BE4F78ADF26185867AE2633603D6491CC452975613FC69A436FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1420-0-0x0000000074582000-0x0000000074583000-memory.dmp

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memory/1420-1-0x0000000000260000-0x0000000000272000-memory.dmp

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memory/1420-2-0x0000000074570000-0x0000000074D2C000-memory.dmp

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memory/1420-3-0x0000000004EC0000-0x0000000004F5C000-memory.dmp

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memory/1420-8-0x0000000074570000-0x0000000074D2C000-memory.dmp

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memory/4196-12-0x0000000074400000-0x0000000074BBC000-memory.dmp

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memory/4196-14-0x0000000074400000-0x0000000074BBC000-memory.dmp

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