asyncrat | fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a

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
16/07/2026, 12:01

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General

Target
fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
Size 45KB
Sample260716-n7dwmacv2j
SHA256 fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a
MD5 36528182fa73963bed320e1ed3bdda09
SHA1 bfbed29b37216f80e924cbc19fd7b3d6f237a77b
SHA512 48600f13400429818dd2bd15042b89aadf0a4fa6752dea7fb056dcc470af86ffc35f17c68610c4f4deeb5b19097e420cc75b38fe0f8965d15169407d74245df0
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNC9Yq3q3hOPI2zjbSgX3iIOZs8zPnL7UsAu8IMd7l:5uSy6pTpoo2/aCq323bVXSI98zPvUR3X
TLSH
T1C7232A003BE9C22BF2BE5F74ACF26145867AF1633603D6491CC4519B5713BC29A526FE
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

phimhot69.com:80
phimhot69.com:22
phimhot69.com:8080
phimhot69.com:8880
phimhot69.com:2052
phimhot69.com:2082
phimhot69.com:2086
phimhot69.com:2095
phimhot69.com:443
phimhot69.com:2053
phimhot69.com:2083
phimhot69.com:2087
phimhot69.com:2096
phimhot69.com:8443
www.phimhot69.com:80
www.phimhot69.com:22
www.phimhot69.com:8080
www.phimhot69.com:8880
www.phimhot69.com:2052
www.phimhot69.com:2082
www.phimhot69.com:2086
www.phimhot69.com:2095
www.phimhot69.com:443
www.phimhot69.com:2053
www.phimhot69.com:2083
www.phimhot69.com:2087
www.phimhot69.com:2096
www.phimhot69.com:8443
malware.phimhot69.com:80
malware.phimhot69.com:22
malware.phimhot69.com:8080
malware.phimhot69.com:8880
malware.phimhot69.com:2052
malware.phimhot69.com:2082
malware.phimhot69.com:2086
malware.phimhot69.com:2095
malware.phimhot69.com:443
malware.phimhot69.com:2053
malware.phimhot69.com:2083
malware.phimhot69.com:2087
malware.phimhot69.com:2096
malware.phimhot69.com:8443
remcos.phimhot69.com:80
remcos.phimhot69.com:22
remcos.phimhot69.com:8080
remcos.phimhot69.com:8880
remcos.phimhot69.com:2052
remcos.phimhot69.com:2082
remcos.phimhot69.com:2086
remcos.phimhot69.com:2095
remcos.phimhot69.com:443
remcos.phimhot69.com:2053
remcos.phimhot69.com:2083
remcos.phimhot69.com:2087
remcos.phimhot69.com:2096
remcos.phimhot69.com:8443

Mutex

CqstH4F1bSzX

Attributes

delay
0
install
true
install_file
bncm3rf.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/0x000e00000001c583-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4724	bncm3rf.exe
2712	bncm3rf.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bncm3rf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bncm3rf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.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
3200	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
4232	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 2672	2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe	87
PID 2900 wrote to memory of 4148	2900	fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe	88
PID 2672 wrote to memory of 4232	2672	cmd.exe	91
PID 4148 wrote to memory of 3200	4148	cmd.exe	92
PID 4148 wrote to memory of 2712	4148	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe
"C:\Users\Admin\AppData\Local\Temp\fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bncm3rf" /tr '"C:\Users\Admin\AppData\Roaming\bncm3rf.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "bncm3rf" /tr '"C:\Users\Admin\AppData\Roaming\bncm3rf.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4232
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5097.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4148
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3200
- - C:\Users\Admin\AppData\Roaming\bncm3rf.exe
    "C:\Users\Admin\AppData\Roaming\bncm3rf.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2712

C:\Users\Admin\AppData\Roaming\bncm3rf.exe
"C:\Users\Admin\AppData\Roaming\bncm3rf.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4724

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

tmp5097.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5097.tmp.bat
Size 151B
SHA256 463e6cff1585f57b822632c50ce8179d94538e3942d71ed751e7609b8ff63d50
MD5 b0356f2f1e1a676bb63faf2062d0ae40
SHA1 959e7bf5341169fd89fdadb6fd91a3f0f5661cbb
SHA512 4bf3f7f047b1794f7ffa352b9f51fa11c599ac193e8e21958a9a29c95674e95fd7e5d341e5aad57580c17280e94a09178158948a323cc5fb6d5c3db80ea1fd1a
TLSH
T107C02B4399D6FA0F2C0A141303FAD98CA272AC6E3F40BB00C708454F168145CF4DA389
MD5 SHA1 SHA512 TLSH

Submit Download

bncm3rf.exe

Path C:\Users\Admin\AppData\Roaming\bncm3rf.exe
Size 45KB
SHA256 fb991dc601c3473132a5b7a587dbc6e56e55816f6cf6200092f6c2508283921a
MD5 36528182fa73963bed320e1ed3bdda09
SHA1 bfbed29b37216f80e924cbc19fd7b3d6f237a77b
SHA512 48600f13400429818dd2bd15042b89aadf0a4fa6752dea7fb056dcc470af86ffc35f17c68610c4f4deeb5b19097e420cc75b38fe0f8965d15169407d74245df0
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNC9Yq3q3hOPI2zjbSgX3iIOZs8zPnL7UsAu8IMd7l:5uSy6pTpoo2/aCq323bVXSI98zPvUR3X
TLSH
T1C7232A003BE9C22BF2BE5F74ACF26145867AF1633603D6491CC4519B5713BC29A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2900-0-0x0000000074B92000-0x0000000074B93000-memory.dmp

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memory/2900-1-0x0000000000FC0000-0x0000000000FD2000-memory.dmp

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memory/2900-2-0x0000000074B80000-0x000000007533C000-memory.dmp

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memory/2900-3-0x00000000059D0000-0x0000000005A6C000-memory.dmp

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memory/2900-8-0x0000000074B80000-0x000000007533C000-memory.dmp

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memory/4724-12-0x0000000074A10000-0x00000000751CC000-memory.dmp

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memory/4724-14-0x0000000074A10000-0x00000000751CC000-memory.dmp

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