asyncrat | 1763700355c9a6a137f72badfbf615c10b16c6b3313b36efd8ba8fc1ea7d3574

General

Target

Loader.exe
Size

47KB
MD5

ad44130f8f42acf617c47f83717e1b58
SHA1

b74238ba25a96abfe889d92547d42712da39635e
SHA256

1763700355c9a6a137f72badfbf615c10b16c6b3313b36efd8ba8fc1ea7d3574
SHA512

74966ed6542d3f62f0b2950bd8bebd8f763b939a5f114adfaf5e4f7986047c4ffdc52e88999913ccbbfa34999e32c76e3c3e6a358806f7738b8586e464fa63c1
SSDEEP

768:MuyxNTAoZjRWUJd9bmo2qLzhSTZxvErdPIiwvaLnebAw//FPACqT54KNTUTBDZ4x:MuyxNTAGL2soZxvjiwSjebR9xq44Y1dq

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

kingdom-spent.gl.at.ply.gg:25651

Mutex

mBCDHgobepxm

Attributes

delay
3
install
true
install_file
Windows.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0007000000012119-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2524	Windows.exe

Loads dropped DLL 1 IoCs

pid	Process
2532	cmd.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 6 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	Loader.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	Windows.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2548	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
2552	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2632	Loader.exe
2632	Loader.exe
2632	Loader.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	Loader.exe
Token: SeDebugPrivilege	2524	Windows.exe
Token: SeDebugPrivilege	2524	Windows.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 1164	2632	Loader.exe	30
PID 2632 wrote to memory of 1164	2632	Loader.exe	30
PID 2632 wrote to memory of 1164	2632	Loader.exe	30
PID 2632 wrote to memory of 1164	2632	Loader.exe	30
PID 2632 wrote to memory of 2532	2632	Loader.exe	31
PID 2632 wrote to memory of 2532	2632	Loader.exe	31
PID 2632 wrote to memory of 2532	2632	Loader.exe	31
PID 2632 wrote to memory of 2532	2632	Loader.exe	31
PID 1164 wrote to memory of 2552	1164	cmd.exe	34
PID 1164 wrote to memory of 2552	1164	cmd.exe	34
PID 1164 wrote to memory of 2552	1164	cmd.exe	34
PID 1164 wrote to memory of 2552	1164	cmd.exe	34
PID 2532 wrote to memory of 2548	2532	cmd.exe	35
PID 2532 wrote to memory of 2548	2532	cmd.exe	35
PID 2532 wrote to memory of 2548	2532	cmd.exe	35
PID 2532 wrote to memory of 2548	2532	cmd.exe	35
PID 2532 wrote to memory of 2524	2532	cmd.exe	36
PID 2532 wrote to memory of 2524	2532	cmd.exe	36
PID 2532 wrote to memory of 2524	2532	cmd.exe	36
PID 2532 wrote to memory of 2524	2532	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows" /tr '"C:\Users\Admin\AppData\Roaming\Windows.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2552
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5A8E.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2548
- - C:\Users\Admin\AppData\Roaming\Windows.exe
    "C:\Users\Admin\AppData\Roaming\Windows.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5A8E.tmp.bat

Filesize
151B

MD5
fc6ee65092ca3566331e08913c606cf4

SHA1
9eac3c70664d473070ed2d37318999a45a3642f1

SHA256
b7d0ae9b879642a4c23baebedbc4edbcfcce16d5ce56f75f62585242788eae3b

SHA512
cc730954fe360fe6e4e2f4e3c61e4ba421649e7940ba8ba2326acdb2927124c9c306548047b5d7b43a1493376d292835c0cc96bbceee40c460516311b6a8fb06

Download Submit
\Users\Admin\AppData\Roaming\Windows.exe

Filesize
47KB

MD5
ad44130f8f42acf617c47f83717e1b58

SHA1
b74238ba25a96abfe889d92547d42712da39635e

SHA256
1763700355c9a6a137f72badfbf615c10b16c6b3313b36efd8ba8fc1ea7d3574

SHA512
74966ed6542d3f62f0b2950bd8bebd8f763b939a5f114adfaf5e4f7986047c4ffdc52e88999913ccbbfa34999e32c76e3c3e6a358806f7738b8586e464fa63c1

Download Submit
memory/2524-16-0x00000000009B0000-0x00000000009C2000-memory.dmp

Filesize
72KB

Download
memory/2632-0-0x00000000747FE000-0x00000000747FF000-memory.dmp

Filesize
4KB

Download
memory/2632-1-0x0000000001230000-0x0000000001242000-memory.dmp

Filesize
72KB

Download
memory/2632-2-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2632-11-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads