asyncrat | 99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 14:09

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General

Target
99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
Size 45KB
Sample260710-rf77yac12v
SHA256 99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2
MD5 f8c5ce34ca568afc7688a2b1bb0adb61
SHA1 8041654af967a633526e016db6b0656b1c791a25
SHA512 63413c9a193cf3dca7009eb7ea3d44d09ede6aa2791c2db94d7e516c306f1a1a5c96334a07cd0d5bf2197233f7fc85e4fdd4250409757a14387d36f7ca5c03fd
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNrzjHy/aKPIbXjbcgX3i34gg3c7oJNVqBDZ0x:5uSy6pTpoo2onhbzbzXS/p7oJYd0x
TLSH
T13C232B003BE9812BF2BE5B7899F26145867AF6633A03D64D1CC411DB5713BC68A426FE
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

phimxxxhd.com:80
phimxxxhd.com:22
phimxxxhd.com:8080
phimxxxhd.com:8880
phimxxxhd.com:2052
phimxxxhd.com:2082
phimxxxhd.com:2086
phimxxxhd.com:2095
phimxxxhd.com:443
phimxxxhd.com:2053
phimxxxhd.com:2083
phimxxxhd.com:2087
phimxxxhd.com:2096
phimxxxhd.com:8443
www.phimxxxhd.com:80
www.phimxxxhd.com:22
www.phimxxxhd.com:8080
www.phimxxxhd.com:8880
www.phimxxxhd.com:2052
www.phimxxxhd.com:2082
www.phimxxxhd.com:2086
www.phimxxxhd.com:2095
www.phimxxxhd.com:443
www.phimxxxhd.com:2053
www.phimxxxhd.com:2083
www.phimxxxhd.com:2087
www.phimxxxhd.com:2096
www.phimxxxhd.com:8443
ryuk.phimxxxhd.com:80
ryuk.phimxxxhd.com:22
ryuk.phimxxxhd.com:8080
ryuk.phimxxxhd.com:8880
ryuk.phimxxxhd.com:2052
ryuk.phimxxxhd.com:2082
ryuk.phimxxxhd.com:2086
ryuk.phimxxxhd.com:2095
ryuk.phimxxxhd.com:443
ryuk.phimxxxhd.com:2053
ryuk.phimxxxhd.com:2083
ryuk.phimxxxhd.com:2087
ryuk.phimxxxhd.com:2096
ryuk.phimxxxhd.com:8443
fakeupdates.phimxxxhd.com:80
fakeupdates.phimxxxhd.com:22
fakeupdates.phimxxxhd.com:8080
fakeupdates.phimxxxhd.com:8880
fakeupdates.phimxxxhd.com:2052
fakeupdates.phimxxxhd.com:2082
fakeupdates.phimxxxhd.com:2086
fakeupdates.phimxxxhd.com:2095
fakeupdates.phimxxxhd.com:443
fakeupdates.phimxxxhd.com:2053
fakeupdates.phimxxxhd.com:2083
fakeupdates.phimxxxhd.com:2087
fakeupdates.phimxxxhd.com:2096
fakeupdates.phimxxxhd.com:8443

Mutex

fmnPv4RVtNj1

Attributes

delay
0
install
true
install_file
mg3v5a7.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/0x0005000000016b3f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3268	mg3v5a7.exe
2184	mg3v5a7.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	mg3v5a7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.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	mg3v5a7.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4744	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
5152	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
Token: SeDebugPrivilege	3268	mg3v5a7.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 2776	4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe	87
PID 4952 wrote to memory of 5816	4952	99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe	89
PID 5816 wrote to memory of 4744	5816	cmd.exe	91
PID 2776 wrote to memory of 5152	2776	cmd.exe	92
PID 5816 wrote to memory of 2184	5816	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe
"C:\Users\Admin\AppData\Local\Temp\99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mg3v5a7" /tr '"C:\Users\Admin\AppData\Roaming\mg3v5a7.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mg3v5a7" /tr '"C:\Users\Admin\AppData\Roaming\mg3v5a7.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5152
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB953.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5816
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4744
- - C:\Users\Admin\AppData\Roaming\mg3v5a7.exe
    "C:\Users\Admin\AppData\Roaming\mg3v5a7.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2184

C:\Users\Admin\AppData\Roaming\mg3v5a7.exe
"C:\Users\Admin\AppData\Roaming\mg3v5a7.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3268

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

tmpB953.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpB953.tmp.bat
Size 151B
SHA256 b62e16e7864aa3e38d25e78835c2e2a81ae9866adb5aa07efd5b57d34ccad5d0
MD5 60aaed150d0d7fad188f28c0772c7460
SHA1 3d4343463749610314d2f8e0f880e47c97b44bcc
SHA512 20154f5545d16546ee4a5aaf3331faa2e0c3dd73de73117c26615caafd43c6533646ca74c44bc72f4ecb3ae4c04da5fbfd7a947adcb1417a6d124e8073d7d706
TLSH
T1A6C02B4359C5EF4F280578131AFAD49CF1726C193F40BF00DB1C800E2280498F0F9341
MD5 SHA1 SHA512 TLSH

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mg3v5a7.exe

Path C:\Users\Admin\AppData\Roaming\mg3v5a7.exe
Size 45KB
SHA256 99dcf3631c0529e61d0ff3c19516c2db823056ac1c93e0d8db23a0e7c7df18d2
MD5 f8c5ce34ca568afc7688a2b1bb0adb61
SHA1 8041654af967a633526e016db6b0656b1c791a25
SHA512 63413c9a193cf3dca7009eb7ea3d44d09ede6aa2791c2db94d7e516c306f1a1a5c96334a07cd0d5bf2197233f7fc85e4fdd4250409757a14387d36f7ca5c03fd
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNrzjHy/aKPIbXjbcgX3i34gg3c7oJNVqBDZ0x:5uSy6pTpoo2onhbzbzXS/p7oJYd0x
TLSH
T13C232B003BE9812BF2BE5B7899F26145867AF6633A03D64D1CC411DB5713BC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3268-12-0x0000000074D20000-0x00000000754DC000-memory.dmp

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memory/3268-14-0x0000000074D20000-0x00000000754DC000-memory.dmp

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memory/4952-0-0x0000000074EA2000-0x0000000074EA3000-memory.dmp

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memory/4952-1-0x0000000000CF0000-0x0000000000D02000-memory.dmp

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memory/4952-2-0x0000000074E90000-0x000000007564C000-memory.dmp

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memory/4952-3-0x00000000057E0000-0x000000000587C000-memory.dmp

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memory/4952-8-0x0000000074E90000-0x000000007564C000-memory.dmp

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