asyncrat | 192839523e9d33faf77635d9c544ecc1cc4a8496dcda813b5a0107689bb160c1

Analysis

max time kernel
148s
max time network
144s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
23/06/2026, 06:57

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General

Target
Chrome.exe
Size 48KB
Sample260623-hrdm2aaz3l
SHA256 192839523e9d33faf77635d9c544ecc1cc4a8496dcda813b5a0107689bb160c1
MD5 b49addc88a6fef4a78db8b3b7f2e840d
SHA1 55168c1f072793bd02f51cd021e77de6a8adf9fd
SHA512 6efd7414dd604af203bab6ddbbee297dbcc8f6421b7dc9fd40768289b6c5b004178c5f17d720fd59afca2403cb2a762ccc1889ccd333cd15e6f8871c493f5906
SSDEEP 768:yuKQ9TH4EjZWUR/ejmo2qreaj1SBwTPIjyoVNtA10bcFrvFfrOA3cQhd7FBDZI+:yuKQ9THfe2qiw8jyoVvACbc3jOGc8BLr
TLSH
T145233B003BED813BF2BE4F74A9F32145867AF2673603D64E1C8441975613BC69A52AFE
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

www.tk999.pro:6606
www.tk999.pro:7707
www.tk999.pro:8808
www.tk999.pro:80
www.tk999.pro:8080
www.tk999.pro:443
www.tk999.pro:8443
tk999.pro:6606
tk999.pro:7707
tk999.pro:8808
tk999.pro:80
tk999.pro:8080
tk999.pro:443
tk999.pro:8443

Mutex

z2hfGiDrGq6A

Attributes

delay
3
install
true
install_file
svchost.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/0x000d00000001c63f-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3620	svchost.exe
4840	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Chrome.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
4704	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
6952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe
1208	Chrome.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1208	Chrome.exe
Token: SeDebugPrivilege	3620	svchost.exe
Token: SeDebugPrivilege	3620	svchost.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 2404	1208	Chrome.exe	90
PID 1208 wrote to memory of 1280	1208	Chrome.exe	92
PID 1280 wrote to memory of 4704	1280	cmd.exe	94
PID 2404 wrote to memory of 6952	2404	cmd.exe	95
PID 1280 wrote to memory of 4840	1280	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\Chrome.exe
"C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:6952
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5649.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4704
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4840

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3620

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

tmp5649.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5649.tmp.bat
Size 151B
SHA256 abc6f5ff16b350685c9fbe7bad0ccbf76024c9e2822950797910caf79c22d792
MD5 b9b6e8dddda882405725031c19578354
SHA1 bb0e444d63a8604c5b9f4c60a769d21b18bc5a54
SHA512 7f3491b6616f2d583b8d80944ceeab36fb055ff7585df9d944bd1d364b2a35e589aebfa9e7674fa4d5e5a71fda56c46e1f71e6ec66f029ad93ede53a5ac553f5
TLSH
T10BC02B4265C6EA0E3805146303FAD98D92B26C1B3F40BF80C305443E238044CF4EA341
MD5 SHA1 SHA512 TLSH

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 48KB
SHA256 192839523e9d33faf77635d9c544ecc1cc4a8496dcda813b5a0107689bb160c1
MD5 b49addc88a6fef4a78db8b3b7f2e840d
SHA1 55168c1f072793bd02f51cd021e77de6a8adf9fd
SHA512 6efd7414dd604af203bab6ddbbee297dbcc8f6421b7dc9fd40768289b6c5b004178c5f17d720fd59afca2403cb2a762ccc1889ccd333cd15e6f8871c493f5906
SSDEEP 768:yuKQ9TH4EjZWUR/ejmo2qreaj1SBwTPIjyoVNtA10bcFrvFfrOA3cQhd7FBDZI+:yuKQ9THfe2qiw8jyoVvACbc3jOGc8BLr
TLSH
T145233B003BED813BF2BE4F74A9F32145867AF2673603D64E1C8441975613BC69A52AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1208-0-0x00000000749D2000-0x00000000749D3000-memory.dmp

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memory/1208-1-0x0000000000BD0000-0x0000000000BE2000-memory.dmp

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memory/1208-2-0x00000000749C0000-0x000000007517C000-memory.dmp

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memory/1208-3-0x0000000005700000-0x0000000005766000-memory.dmp

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memory/1208-4-0x0000000005B30000-0x0000000005BCC000-memory.dmp

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memory/1208-10-0x00000000749C0000-0x000000007517C000-memory.dmp

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memory/3620-13-0x00000000749C0000-0x000000007517C000-memory.dmp

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memory/3620-15-0x00000000749C0000-0x000000007517C000-memory.dmp

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