asyncrat | 1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 16:15

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General

Target

file.exe
Size

3.6MB
MD5

d3f515d42cf7e62738c596dc4ba9fdb9
SHA1

f63216b18ab4265d9c0b3243ba491fcb74b1bac6
SHA256

1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393
SHA512

81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52
SSDEEP

49152:TwWtZnTwCk7UHla796h+16eUMTycWaX/Ngvv1VlHIPIV/CdQvJuJ44wPcbErkcz3:TwwvYXUMmczWvnlo0KSj5L1Ln9

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

185.208.158.187:4449

Mutex

tnybaidkzovl

Attributes

delay
10
install
true
install_file
NotepadUpdate.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
2416	powershell.exe
2220	powershell.exe

Executes dropped EXE 3 IoCs

pid	Process
1988	NotepadUpdate.exe
1788	NotepadUpdate.exe
2816	NotepadUpdate.exe

Loads dropped DLL 3 IoCs

pid	Process
1716	cmd.exe
1988	NotepadUpdate.exe
1988	NotepadUpdate.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 2940	2224	file.exe	35
PID 1988 set thread context of 2816	1988	NotepadUpdate.exe	48

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NotepadUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NotepadUpdate.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	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2568	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
2744	schtasks.exe
2028	schtasks.exe
1920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2220	powershell.exe
2940	file.exe
2940	file.exe
2940	file.exe
2416	powershell.exe
1988	NotepadUpdate.exe
1988	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe
2816	NotepadUpdate.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	file.exe
Token: SeDebugPrivilege	2220	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeDebugPrivilege	1988	NotepadUpdate.exe
Token: SeDebugPrivilege	2816	NotepadUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	NotepadUpdate.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2220	2224	file.exe	31
PID 2224 wrote to memory of 2220	2224	file.exe	31
PID 2224 wrote to memory of 2220	2224	file.exe	31
PID 2224 wrote to memory of 2220	2224	file.exe	31
PID 2224 wrote to memory of 2744	2224	file.exe	32
PID 2224 wrote to memory of 2744	2224	file.exe	32
PID 2224 wrote to memory of 2744	2224	file.exe	32
PID 2224 wrote to memory of 2744	2224	file.exe	32
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2224 wrote to memory of 2940	2224	file.exe	35
PID 2940 wrote to memory of 2296	2940	file.exe	36
PID 2940 wrote to memory of 2296	2940	file.exe	36
PID 2940 wrote to memory of 2296	2940	file.exe	36
PID 2940 wrote to memory of 2296	2940	file.exe	36
PID 2940 wrote to memory of 1716	2940	file.exe	38
PID 2940 wrote to memory of 1716	2940	file.exe	38
PID 2940 wrote to memory of 1716	2940	file.exe	38
PID 2940 wrote to memory of 1716	2940	file.exe	38
PID 2296 wrote to memory of 2028	2296	cmd.exe	40
PID 2296 wrote to memory of 2028	2296	cmd.exe	40
PID 2296 wrote to memory of 2028	2296	cmd.exe	40
PID 2296 wrote to memory of 2028	2296	cmd.exe	40
PID 1716 wrote to memory of 2568	1716	cmd.exe	41
PID 1716 wrote to memory of 2568	1716	cmd.exe	41
PID 1716 wrote to memory of 2568	1716	cmd.exe	41
PID 1716 wrote to memory of 2568	1716	cmd.exe	41
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1716 wrote to memory of 1988	1716	cmd.exe	42
PID 1988 wrote to memory of 2416	1988	NotepadUpdate.exe	43
PID 1988 wrote to memory of 2416	1988	NotepadUpdate.exe	43
PID 1988 wrote to memory of 2416	1988	NotepadUpdate.exe	43
PID 1988 wrote to memory of 2416	1988	NotepadUpdate.exe	43
PID 1988 wrote to memory of 1920	1988	NotepadUpdate.exe	45
PID 1988 wrote to memory of 1920	1988	NotepadUpdate.exe	45
PID 1988 wrote to memory of 1920	1988	NotepadUpdate.exe	45
PID 1988 wrote to memory of 1920	1988	NotepadUpdate.exe	45
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 1788	1988	NotepadUpdate.exe	47
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48
PID 1988 wrote to memory of 2816	1988	NotepadUpdate.exe	48

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2220
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7CE.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2744
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2296
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2028
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3505.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2568
  - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
      "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1988
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2416
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7E83.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1920
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        
        PID:1788
    - - C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
        
        "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2816

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

Query Registry

T1012

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\CabB02F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarC2A8.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3505.tmp.bat

Filesize
157B

MD5
f87b6476b91015251f2cf907e84e4984

SHA1
c0a36632536652ef5a83e664dd70c97deaab5eba

SHA256
af223edd4e983061fe29b8b01267bebb5e0acefc3277fcbc1b79b7b8dda9adac

SHA512
51bc7e1f1a45daa2612937f6ffe7bd28ecb011f076bf8ca699d2f4f059b1dc47e10b4e4055a0d16133882561a0b001e7c55fa877b3b0f658a54fd6447f731cd7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7CE.tmp

Filesize
1KB

MD5
870bd4fd2982c168c8d861738db2d853

SHA1
eb804074e71447ae978ceca9b1d0226ea84ea589

SHA256
f48ff0657705e57e147af7b664390e53649d7721f3ceaa91b9f34b607d16a53c

SHA512
f96b05298bed76f4fb58ee4741f04a3ef9aaa228160a620117fdae1d0f075897cf534c2f7c0c3a078b0d3c897144791c0ecf8aecbbf302f025ae27c7cb710078

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

Filesize
7KB

MD5
5858856b320cb837d517c4d5a2fbdb73

SHA1
b82a28fbe1e38d4c8b6e9ac9009b46d453af0c44

SHA256
b404892b8a74f31b4bed9ff99241abdca3f2a8f032d13dfa0a598271abe1adff

SHA512
c7879102586eaf3cc2f14f93c30e798ea8eca5756dc59262482b4e2e51e1499d55dc77cf2e3933211389d5b4dc318ef10b992920176de40df91969d48b43ef70

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
3.6MB

MD5
d3f515d42cf7e62738c596dc4ba9fdb9

SHA1
f63216b18ab4265d9c0b3243ba491fcb74b1bac6

SHA256
1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

SHA512
81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

Download Submit
memory/1988-40-0x0000000000960000-0x0000000000A48000-memory.dmp

Filesize
928KB

Download
memory/2224-6-0x0000000004F70000-0x0000000004FCC000-memory.dmp

Filesize
368KB

Download
memory/2224-5-0x0000000074A10000-0x00000000750FE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-1-0x0000000000900000-0x00000000009E8000-memory.dmp

Filesize
928KB

Download
memory/2224-2-0x0000000074A10000-0x00000000750FE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-3-0x00000000008B0000-0x00000000008CE000-memory.dmp

Filesize
120KB

Download
memory/2224-26-0x0000000074A10000-0x00000000750FE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-4-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

Filesize
4KB

Download
memory/2224-0-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

Filesize
4KB

Download
memory/2816-59-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-62-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2816-63-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-14-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-16-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-20-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-18-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-24-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2940-25-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download