asyncrat | 126ca25c724c3b76d945be8c103c7d3b0faa68a9f872342774b075efa2fd2c8b

Analysis

max time kernel
128s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 09:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
2756	powershell.exe
2100	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2400	images.exe
2920	images.exe

Loads dropped DLL 1 IoCs

pid	Process
2676	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1860 set thread context of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 2400 set thread context of 2920	2400	images.exe	46

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	schtasks.exe
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	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	images.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2016	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
2520	schtasks.exe
2868	schtasks.exe
2468	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2756	powershell.exe
2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
2100	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	2920	images.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2756	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	30
PID 1860 wrote to memory of 2756	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	30
PID 1860 wrote to memory of 2756	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	30
PID 1860 wrote to memory of 2756	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	30
PID 1860 wrote to memory of 2520	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 1860 wrote to memory of 2520	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 1860 wrote to memory of 2520	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 1860 wrote to memory of 2520	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	32
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 1860 wrote to memory of 2988	1860	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	34
PID 2988 wrote to memory of 552	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2988 wrote to memory of 552	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2988 wrote to memory of 552	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2988 wrote to memory of 552	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	35
PID 2988 wrote to memory of 2676	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2988 wrote to memory of 2676	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2988 wrote to memory of 2676	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2988 wrote to memory of 2676	2988	53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe	36
PID 2676 wrote to memory of 2016	2676	cmd.exe	39
PID 2676 wrote to memory of 2016	2676	cmd.exe	39
PID 2676 wrote to memory of 2016	2676	cmd.exe	39
PID 2676 wrote to memory of 2016	2676	cmd.exe	39
PID 552 wrote to memory of 2868	552	cmd.exe	40
PID 552 wrote to memory of 2868	552	cmd.exe	40
PID 552 wrote to memory of 2868	552	cmd.exe	40
PID 552 wrote to memory of 2868	552	cmd.exe	40
PID 2676 wrote to memory of 2400	2676	cmd.exe	41
PID 2676 wrote to memory of 2400	2676	cmd.exe	41
PID 2676 wrote to memory of 2400	2676	cmd.exe	41
PID 2676 wrote to memory of 2400	2676	cmd.exe	41
PID 2400 wrote to memory of 2100	2400	images.exe	42
PID 2400 wrote to memory of 2100	2400	images.exe	42
PID 2400 wrote to memory of 2100	2400	images.exe	42
PID 2400 wrote to memory of 2100	2400	images.exe	42
PID 2400 wrote to memory of 2468	2400	images.exe	44
PID 2400 wrote to memory of 2468	2400	images.exe	44
PID 2400 wrote to memory of 2468	2400	images.exe	44
PID 2400 wrote to memory of 2468	2400	images.exe	44
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46
PID 2400 wrote to memory of 2920	2400	images.exe	46

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:1860
- 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:2756
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC0.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2520
- 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:2988
- - 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:552
  - - 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:2868
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1DCD.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2016
  - - 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:2400
    - - 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:2100
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB80.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2468
    - - 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:2920

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1DCD.tmp.bat

Filesize
150B

MD5
264b11353a70702111753304f28ca5ac

SHA1
a4532265cee89150840f9689d5773fa73f4303a1

SHA256
d6dc08e23a80dde692cd97dcbbb6f50ddb4668733ea8ad751489e755b73dd8a6

SHA512
d74732409478863ef9bdcccb185bccc91e1b3f2d6f7543d83d57ca3278240dff7359b038c6bb9a9a0161a89ea68eae6b057f379b15b3d5ae6bf52f25bd8ea2ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEC0.tmp

Filesize
1KB

MD5
1f090a1e41de630edf51e4c09a75ce58

SHA1
37331816ff500f3a8718a7215fa9b328f07de7c9

SHA256
45d4868fc9735bdad8bba60d249d3f9bb0ee72b08abcf6c131b601e9bb886433

SHA512
23be1ec3160273a68d1bd8fdd137a25a49aa843de9b1f245c03d8f31b71cecc3a1604abaaed0b866cc62f94dc52b81c24e07e8eb8a80c9d318d6eb87c69a8826

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

Filesize
7KB

MD5
19a470c276f95b098b7e5611fdaeb6c7

SHA1
2aec5609bbdef7e9518785763618b35892204707

SHA256
936fdcf1dc1277c54758f504a6f1cfbd700001c4a6b53a8a623235fc6f340c93

SHA512
6c9f4d8dc24881846c19fa7d66dff2eb0c660f73570705af8bb566bd0e38bef192605f0e40958bf7179cfd6d97bcb11f4a27cf2af695f1a70e13dd22d4bf319a

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

Filesize
693KB

MD5
32a1c8ff16fa3dde2509d9cf26f79ba0

SHA1
eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

SHA256
53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

SHA512
b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

Download Submit
memory/1860-29-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/1860-1-0x0000000000EE0000-0x0000000000F94000-memory.dmp

Filesize
720KB

Download
memory/1860-6-0x00000000008F0000-0x00000000008FC000-memory.dmp

Filesize
48KB

Download
memory/1860-7-0x0000000004B70000-0x0000000004BC4000-memory.dmp

Filesize
336KB

Download
memory/1860-4-0x00000000740EE000-0x00000000740EF000-memory.dmp

Filesize
4KB

Download
memory/1860-15-0x0000000004E60000-0x0000000004E74000-memory.dmp

Filesize
80KB

Download
memory/1860-5-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/1860-3-0x0000000000570000-0x0000000000594000-memory.dmp

Filesize
144KB

Download
memory/1860-2-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/1860-0-0x00000000740EE000-0x00000000740EF000-memory.dmp

Filesize
4KB

Download
memory/2400-42-0x0000000000D10000-0x0000000000DC4000-memory.dmp

Filesize
720KB

Download
memory/2920-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2920-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2920-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-22-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2988-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-28-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2988-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download