asyncrat | 46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-09-2024 13:57

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General

Target

Image-1.exe
Size

257KB
MD5

aa7453ea631c154413df9974a3b17b90
SHA1

ec7df5d298d392b3d1e7e7825e15ee112d587885
SHA256

46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e
SHA512

fb1b9f3216d4574936c019b7351f8b9f5a63983df0ad231b210cb67d188b1824aeb3240471d7ed7842a47108aef681d185c026233d1687af7b48510fae8bfbb1
SSDEEP

6144:mCn9gl994bCIMenvjnPrNoaIxT7K/P19yZD2kzMZOI:mCKl92CIDvjDNo1t7K/P19yZD2kzMZz

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

154.216.17.207:7707

154.216.17.207:8808

154.216.17.207:1188

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
100
install
true
install_file
file.exe
install_folder
%AppData%

aes.plain

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2252	file.exe
2208	file.exe
1972	file.exe

Loads dropped DLL 1 IoCs

pid	Process
2892	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 2328	2344	Image-1.exe	30
PID 2344 set thread context of 2320	2344	Image-1.exe	31
PID 2252 set thread context of 2208	2252	file.exe	41
PID 2252 set thread context of 1972	2252	file.exe	42

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 10 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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Image-1.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	Image-1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Image-1.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3044	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
3016	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2328	Image-1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	Image-1.exe
Token: SeDebugPrivilege	2328	Image-1.exe
Token: SeDebugPrivilege	2252	file.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2328	2344	Image-1.exe	30
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2344 wrote to memory of 2320	2344	Image-1.exe	31
PID 2328 wrote to memory of 1980	2328	Image-1.exe	34
PID 2328 wrote to memory of 1980	2328	Image-1.exe	34
PID 2328 wrote to memory of 1980	2328	Image-1.exe	34
PID 2328 wrote to memory of 1980	2328	Image-1.exe	34
PID 2328 wrote to memory of 2892	2328	Image-1.exe	36
PID 2328 wrote to memory of 2892	2328	Image-1.exe	36
PID 2328 wrote to memory of 2892	2328	Image-1.exe	36
PID 2328 wrote to memory of 2892	2328	Image-1.exe	36
PID 1980 wrote to memory of 3016	1980	cmd.exe	38
PID 1980 wrote to memory of 3016	1980	cmd.exe	38
PID 1980 wrote to memory of 3016	1980	cmd.exe	38
PID 1980 wrote to memory of 3016	1980	cmd.exe	38
PID 2892 wrote to memory of 3044	2892	cmd.exe	39
PID 2892 wrote to memory of 3044	2892	cmd.exe	39
PID 2892 wrote to memory of 3044	2892	cmd.exe	39
PID 2892 wrote to memory of 3044	2892	cmd.exe	39
PID 2892 wrote to memory of 2252	2892	cmd.exe	40
PID 2892 wrote to memory of 2252	2892	cmd.exe	40
PID 2892 wrote to memory of 2252	2892	cmd.exe	40
PID 2892 wrote to memory of 2252	2892	cmd.exe	40
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 2208	2252	file.exe	41
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42
PID 2252 wrote to memory of 1972	2252	file.exe	42

C:\Users\Admin\AppData\Local\Temp\Image-1.exe
"C:\Users\Admin\AppData\Local\Temp\Image-1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1980
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3016
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp566A.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2892
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3044
  - - C:\Users\Admin\AppData\Roaming\file.exe
      "C:\Users\Admin\AppData\Roaming\file.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2252
    - - C:\Users\Admin\AppData\Roaming\file.exe
        
        C:\Users\Admin\AppData\Roaming\file.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2208
    - - C:\Users\Admin\AppData\Roaming\file.exe
        
        C:\Users\Admin\AppData\Roaming\file.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1972
- C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320

Network

MITRE ATT&CK Enterprise v15

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

C:\Users\Admin\AppData\Local\Temp\tmp566A.tmp.bat

Filesize
148B

MD5
3bddb8278e6ba0c65acf744e12c5ec83

SHA1
4a07eae2ca94762a97d30c73c1317e3afc43aca4

SHA256
60ae6f8fba1361eddf2101b7e4aa12d0be670d8162baac54dd21c55aa63425cd

SHA512
29ef02c2200a2500cc638e1ef7a5bc6d9213e1d79db9c5c7732b2c922bf9c596a46d867bc91f90dc979ba6fa5eaf828c3ef3cd80f772345b130b750cf8de38e3

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

Filesize
257KB

MD5
aa7453ea631c154413df9974a3b17b90

SHA1
ec7df5d298d392b3d1e7e7825e15ee112d587885

SHA256
46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e

SHA512
fb1b9f3216d4574936c019b7351f8b9f5a63983df0ad231b210cb67d188b1824aeb3240471d7ed7842a47108aef681d185c026233d1687af7b48510fae8bfbb1

Download Submit
memory/1972-43-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1972-47-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2252-38-0x0000000000190000-0x00000000001DA000-memory.dmp

Filesize
296KB

Download
memory/2320-19-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-23-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-21-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-24-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2328-33-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-17-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-20-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2328-22-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2344-5-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2344-18-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2344-0-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/2344-4-0x00000000002C0000-0x0000000000300000-memory.dmp

Filesize
256KB

Download
memory/2344-3-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2344-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2344-1-0x0000000001150000-0x000000000119A000-memory.dmp

Filesize
296KB

Download