asyncrat | 1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22

Analysis

max time kernel
6s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/08/2026, 16:12

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General

Target
1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
Size 45KB
Sample260821-tnxsaagr8t
SHA256 1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22
MD5 aee5ef93b5dd7633e8aa8d1b7206d918
SHA1 d53642b8bd2b6ef299aa1213663ed613ec38d654
SHA512 fd346643f75cef84118ca92873a38ca12cfda97eceaf71076bfc379851fb312e8fc3474c5771ec931d8d0a5aa12ef6b34d6986a1078a3e354c3b45bfab2eb7e3
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qAfmaPylF3APIFzjbcgX3iqli69XcJDN4BDZcx:UuKWgSJTwRf2vfyv3lF3bzXSmikMN+de
TLSH
T1C6232A003BE9813BF27E4F78A9F26145867AF2636603E65E1CC451DB1623FC6C6426ED
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

streamforester.name:80
streamforester.name:22
streamforester.name:8080
streamforester.name:8880
streamforester.name:2052
streamforester.name:2082
streamforester.name:2086
streamforester.name:2095
streamforester.name:443
streamforester.name:2053
streamforester.name:2083
streamforester.name:2087
streamforester.name:2096
streamforester.name:8443
www.streamforester.name:80
www.streamforester.name:22
www.streamforester.name:8080
www.streamforester.name:8880
www.streamforester.name:2052
www.streamforester.name:2082
www.streamforester.name:2086
www.streamforester.name:2095
www.streamforester.name:443
www.streamforester.name:2053
www.streamforester.name:2083
www.streamforester.name:2087
www.streamforester.name:2096
www.streamforester.name:8443
nimda.streamforester.name:80
nimda.streamforester.name:22
nimda.streamforester.name:8080
nimda.streamforester.name:8880
nimda.streamforester.name:2052
nimda.streamforester.name:2082
nimda.streamforester.name:2086
nimda.streamforester.name:2095
nimda.streamforester.name:443
nimda.streamforester.name:2053
nimda.streamforester.name:2083
nimda.streamforester.name:2087
nimda.streamforester.name:2096
nimda.streamforester.name:8443
mydoom.streamforester.name:80
mydoom.streamforester.name:22
mydoom.streamforester.name:8080
mydoom.streamforester.name:8880
mydoom.streamforester.name:2052
mydoom.streamforester.name:2082
mydoom.streamforester.name:2086
mydoom.streamforester.name:2095
mydoom.streamforester.name:443
mydoom.streamforester.name:2053
mydoom.streamforester.name:2083
mydoom.streamforester.name:2087
mydoom.streamforester.name:2096
mydoom.streamforester.name:8443
ursnif.streamforester.name:80
ursnif.streamforester.name:22
ursnif.streamforester.name:8080
ursnif.streamforester.name:8880
ursnif.streamforester.name:2052
ursnif.streamforester.name:2082
ursnif.streamforester.name:2086
ursnif.streamforester.name:2095
ursnif.streamforester.name:443
ursnif.streamforester.name:2053
ursnif.streamforester.name:2083
ursnif.streamforester.name:2087
ursnif.streamforester.name:2096
ursnif.streamforester.name:8443

Mutex

tanyvO8GEHRo

Attributes

delay
0
install
true
install_file
snmccwrw.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/0x000d00000001c5b3-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4616	snmccwrw.exe
4936	snmccwrw.exe

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
4428	cmd.exe
4016	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	snmccwrw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	snmccwrw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4748	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
4044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
Token: SeDebugPrivilege	4616	snmccwrw.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 4428	2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe	88
PID 2800 wrote to memory of 4016	2800	1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe	90
PID 4016 wrote to memory of 4748	4016	cmd.exe	93
PID 4428 wrote to memory of 4044	4428	cmd.exe	92
PID 4016 wrote to memory of 4936	4016	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe
"C:\Users\Admin\AppData\Local\Temp\1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "snmccwrw" /tr '"C:\Users\Admin\AppData\Roaming\snmccwrw.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4428
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "snmccwrw" /tr '"C:\Users\Admin\AppData\Roaming\snmccwrw.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4044
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5516.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4016
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4748
- - C:\Users\Admin\AppData\Roaming\snmccwrw.exe
    "C:\Users\Admin\AppData\Roaming\snmccwrw.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4936

C:\Users\Admin\AppData\Roaming\snmccwrw.exe
"C:\Users\Admin\AppData\Roaming\snmccwrw.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4616

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp5516.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5516.tmp.bat
Size 152B
SHA256 36f32f304d3a97302c6584dc3a4c120b2ef5a125b70a3da468e066874f533520
MD5 e4e93242808aee9ade4a32471c455a72
SHA1 f36cf573dab65130f20ecf426ec7d2b8c287263e
SHA512 5bb147d51ab786f15105c5dbbac69c7f42c349e86cc44124ce8bb0ded5b344b49e046d2b26d08491895e2a2f363d36d3096f1c1baf6a29c278938fcb7b6cbe92
TLSH
T1C9C08C5265C9EA4E3805182302BAD99CA262A96A3E80AB10C304480E228084CE49A241
MD5 SHA1 SHA512 TLSH

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snmccwrw.exe

Path C:\Users\Admin\AppData\Roaming\snmccwrw.exe
Size 45KB
SHA256 1f640c5ff789034d214045d9548aaec350543ebf5d35a278278b2bb0dc765c22
MD5 aee5ef93b5dd7633e8aa8d1b7206d918
SHA1 d53642b8bd2b6ef299aa1213663ed613ec38d654
SHA512 fd346643f75cef84118ca92873a38ca12cfda97eceaf71076bfc379851fb312e8fc3474c5771ec931d8d0a5aa12ef6b34d6986a1078a3e354c3b45bfab2eb7e3
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qAfmaPylF3APIFzjbcgX3iqli69XcJDN4BDZcx:UuKWgSJTwRf2vfyv3lF3bzXSmikMN+de
TLSH
T1C6232A003BE9813BF27E4F78A9F26145867AF2636603E65E1CC451DB1623FC6C6426ED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2800-0-0x0000000074982000-0x0000000074983000-memory.dmp

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memory/2800-1-0x00000000002F0000-0x0000000000302000-memory.dmp

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memory/2800-2-0x0000000074970000-0x000000007512C000-memory.dmp

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memory/2800-3-0x0000000004E60000-0x0000000004EFC000-memory.dmp

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memory/2800-8-0x0000000074970000-0x000000007512C000-memory.dmp

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memory/4616-12-0x0000000074800000-0x0000000074FBC000-memory.dmp

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memory/4616-14-0x0000000074800000-0x0000000074FBC000-memory.dmp

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