asyncrat | 0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c

Analysis

max time kernel
150s
max time network
151s
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, 11:19

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General

Target
0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
Size 45KB
Sample260710-netrdabs7x
SHA256 0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c
MD5 bb777ab68d1639e0c357acb2782bf127
SHA1 bd5f85077138fcc66279d02cba63d68a7f1e46c6
SHA512 ada7f601c66343d17e1fe8ee81bee0a77d0097d90d09a04bf83842418362e24d7a81905afbf75832155116ea31c3f395026916313370cb033ab215da0e4eeab2
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1T9PLzizyvtLjZPIXzjbagX1iRGhCkZvgFIBsAAjyu:wuZ8pT1tc2u9HiGVjWX3bNXkchNZvgWu
TLSH
T1AB232B0037E8812BF2BE4F7898F25245867AF6773603D5491CC451DB5A23FC29A426FE
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
remcos.phimxxxhd.com:80
remcos.phimxxxhd.com:22
remcos.phimxxxhd.com:8080
remcos.phimxxxhd.com:8880
remcos.phimxxxhd.com:2052
remcos.phimxxxhd.com:2082
remcos.phimxxxhd.com:2086
remcos.phimxxxhd.com:2095
remcos.phimxxxhd.com:443
remcos.phimxxxhd.com:2053
remcos.phimxxxhd.com:2083
remcos.phimxxxhd.com:2087
remcos.phimxxxhd.com:2096
remcos.phimxxxhd.com:8443

Mutex

Q06tfIaKNJxd

Attributes

delay
0
install
true
install_file
bo4o.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/0x000d00000001c61d-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1624	bo4o.exe
4916	bo4o.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	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.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	bo4o.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bo4o.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
6448	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
5220	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
Token: SeDebugPrivilege	1624	bo4o.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5500 wrote to memory of 2332	5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe	89
PID 5500 wrote to memory of 5644	5500	0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe	90
PID 2332 wrote to memory of 5220	2332	cmd.exe	93
PID 5644 wrote to memory of 6448	5644	cmd.exe	94
PID 5644 wrote to memory of 4916	5644	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe
"C:\Users\Admin\AppData\Local\Temp\0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bo4o" /tr '"C:\Users\Admin\AppData\Roaming\bo4o.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2332
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "bo4o" /tr '"C:\Users\Admin\AppData\Roaming\bo4o.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5220
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5A1C.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5644
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:6448
- - C:\Users\Admin\AppData\Roaming\bo4o.exe
    "C:\Users\Admin\AppData\Roaming\bo4o.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4916

C:\Users\Admin\AppData\Roaming\bo4o.exe
"C:\Users\Admin\AppData\Roaming\bo4o.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1624

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

tmp5A1C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5A1C.tmp.bat
Size 148B
SHA256 19edbec7e83884e444ce51b6e8bf1d0a1a573a93e9b120b38786546eccf80da0
MD5 fed71ca9b795930af90de17f1ee43185
SHA1 7c9919b8b41b8c5e9d7eb8053e50a60383bfa1af
SHA512 b78e3aebb11b30684b4a42ae24918cc8e73fb08447528937bf5bcf41064e69645502b8c40ba1888a86615d0b7c82a0d1766299023987facfff731038e206ab18
TLSH
T19CC02B42A1C9EA5F28057C1303FAD99C91727C9A3F40FF00C708840F128044CF0D9341
MD5 SHA1 SHA512 TLSH

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bo4o.exe

Path C:\Users\Admin\AppData\Roaming\bo4o.exe
Size 45KB
SHA256 0ecbdbc545501b21e27ea281ce8b91accfa33a267d9a691d8764144a9563650c
MD5 bb777ab68d1639e0c357acb2782bf127
SHA1 bd5f85077138fcc66279d02cba63d68a7f1e46c6
SHA512 ada7f601c66343d17e1fe8ee81bee0a77d0097d90d09a04bf83842418362e24d7a81905afbf75832155116ea31c3f395026916313370cb033ab215da0e4eeab2
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1T9PLzizyvtLjZPIXzjbagX1iRGhCkZvgFIBsAAjyu:wuZ8pT1tc2u9HiGVjWX3bNXkchNZvgWu
TLSH
T1AB232B0037E8812BF2BE4F7898F25245867AF6773603D5491CC451DB5A23FC29A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1624-12-0x00000000740F0000-0x00000000748AC000-memory.dmp

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memory/1624-14-0x00000000740F0000-0x00000000748AC000-memory.dmp

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memory/5500-0-0x0000000074302000-0x0000000074303000-memory.dmp

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memory/5500-1-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

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memory/5500-2-0x00000000742F0000-0x0000000074AAC000-memory.dmp

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memory/5500-3-0x0000000005800000-0x000000000589C000-memory.dmp

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memory/5500-8-0x00000000742F0000-0x0000000074AAC000-memory.dmp

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