asyncrat | 5a40afa6e0c4a9f1e700f69fa43bdb72a6bcb0a7f91a223296edf97ac4cf4bf5

Analysis

max time kernel
129s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 02:48

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General

Target

53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
Size

693KB
MD5

32a1c8ff16fa3dde2509d9cf26f79ba0
SHA1

eb8d087b2be3fb85375b77244e4a8e9ea5d6044b
SHA256

53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219
SHA512

b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088
SSDEEP

12288:C+JoKggb2iNdvpc++Ghkd1fW1xLeM2TgN/0s:CIoKgK1XpS4u+Ugi

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

37.0.14.197:6060

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
images.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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2712	powershell.exe
2372	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2656	images.exe
2068	images.exe

Loads dropped DLL 1 IoCs

pid	Process
1252	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2656 set thread context of 2068	2656	images.exe	47

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 12 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	powershell.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	images.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.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	images.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
936	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2784	schtasks.exe
2212	schtasks.exe
472	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2712	powershell.exe
2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2372	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
Token: SeDebugPrivilege	2372	powershell.exe
Token: SeDebugPrivilege	2068	images.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2712	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	31
PID 2396 wrote to memory of 2712	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	31
PID 2396 wrote to memory of 2712	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	31
PID 2396 wrote to memory of 2712	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	31
PID 2396 wrote to memory of 2212	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 2396 wrote to memory of 2212	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 2396 wrote to memory of 2212	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 2396 wrote to memory of 2212	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2396 wrote to memory of 2768	2396	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2768 wrote to memory of 1792	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2768 wrote to memory of 1792	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2768 wrote to memory of 1792	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2768 wrote to memory of 1792	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2768 wrote to memory of 1252	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	38
PID 2768 wrote to memory of 1252	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	38
PID 2768 wrote to memory of 1252	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	38
PID 2768 wrote to memory of 1252	2768	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	38
PID 1792 wrote to memory of 472	1792	cmd.exe	40
PID 1792 wrote to memory of 472	1792	cmd.exe	40
PID 1792 wrote to memory of 472	1792	cmd.exe	40
PID 1792 wrote to memory of 472	1792	cmd.exe	40
PID 1252 wrote to memory of 936	1252	cmd.exe	41
PID 1252 wrote to memory of 936	1252	cmd.exe	41
PID 1252 wrote to memory of 936	1252	cmd.exe	41
PID 1252 wrote to memory of 936	1252	cmd.exe	41
PID 1252 wrote to memory of 2656	1252	cmd.exe	42
PID 1252 wrote to memory of 2656	1252	cmd.exe	42
PID 1252 wrote to memory of 2656	1252	cmd.exe	42
PID 1252 wrote to memory of 2656	1252	cmd.exe	42
PID 2656 wrote to memory of 2372	2656	images.exe	43
PID 2656 wrote to memory of 2372	2656	images.exe	43
PID 2656 wrote to memory of 2372	2656	images.exe	43
PID 2656 wrote to memory of 2372	2656	images.exe	43
PID 2656 wrote to memory of 2784	2656	images.exe	45
PID 2656 wrote to memory of 2784	2656	images.exe	45
PID 2656 wrote to memory of 2784	2656	images.exe	45
PID 2656 wrote to memory of 2784	2656	images.exe	45
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47
PID 2656 wrote to memory of 2068	2656	images.exe	47

C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
"C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp54D4.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2212
- C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
  "C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:472
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp63F1.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1252
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:936
  - - C:\Users\Admin\AppData\Roaming\images.exe
      "C:\Users\Admin\AppData\Roaming\images.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2656
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2372
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2175.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2784
    - - C:\Users\Admin\AppData\Roaming\images.exe
        
        "C:\Users\Admin\AppData\Roaming\images.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:2068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp54D4.tmp

Filesize
1KB

MD5
1f090a1e41de630edf51e4c09a75ce58

SHA1
37331816ff500f3a8718a7215fa9b328f07de7c9

SHA256
45d4868fc9735bdad8bba60d249d3f9bb0ee72b08abcf6c131b601e9bb886433

SHA512
23be1ec3160273a68d1bd8fdd137a25a49aa843de9b1f245c03d8f31b71cecc3a1604abaaed0b866cc62f94dc52b81c24e07e8eb8a80c9d318d6eb87c69a8826

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp63F1.tmp.bat

Filesize
150B

MD5
d7f92c32036f8b0cfa3919a7be7f86ea

SHA1
da86c12360490acaec4fede0a0218fc94c4d0e9d

SHA256
8cd31299dc3ac098fc8ff32f757ecf12c0ee694d1150b280b45856e082ced243

SHA512
b8ddcd99f9da3eaa589f06d3f40b2fd733ea503350ac3fea0c13267f2e8e44bc5308e8d927b2a1542f0e90857f0aa82b733a4944dd7e39d40fd8e7a8064ba558

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
b3a8568a40e1a0b8b9a3b5ba24f785a5

SHA1
d77cb18beec4a72f8a8724491a007201ed88798d

SHA256
05e01c4a04488061d09dfd382512cd2032cbbed363416e0bb316d0dfc2587d8e

SHA512
4b6c0228ff344cfbc3ccef1112aa450102e64efc92d2bcb57a529ab6ead33ffe2fedcf078cfacc325734190b112d97564cc1d64a13a05de082b91573af299c5d

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

Filesize
693KB

MD5
32a1c8ff16fa3dde2509d9cf26f79ba0

SHA1
eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

SHA256
53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

SHA512
b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

Download Submit
memory/2068-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2068-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2068-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2396-5-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-6-0x0000000000650000-0x000000000065C000-memory.dmp

Filesize
48KB

Download
memory/2396-7-0x0000000004D00000-0x0000000004D54000-memory.dmp

Filesize
336KB

Download
memory/2396-4-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2396-15-0x0000000001000000-0x0000000001014000-memory.dmp

Filesize
80KB

Download
memory/2396-29-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-3-0x0000000000330000-0x0000000000354000-memory.dmp

Filesize
144KB

Download
memory/2396-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2396-2-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-1-0x00000000011A0000-0x0000000001254000-memory.dmp

Filesize
720KB

Download
memory/2656-42-0x0000000000A00000-0x0000000000AB4000-memory.dmp

Filesize
720KB

Download
memory/2656-43-0x00000000003D0000-0x00000000003F4000-memory.dmp

Filesize
144KB

Download
memory/2656-44-0x0000000005100000-0x0000000005154000-memory.dmp

Filesize
336KB

Download
memory/2768-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-22-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2768-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-28-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download