asyncrat | 62f8cfee286a706856ebe02b176db9169ae776c6609c23016868887ea6b0ab98

Analysis

max time kernel
121s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/01/2025, 08:16

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General

Target

333.exe
Size

65KB
MD5

5855063b0ae049847b1d9eeced51a17b
SHA1

17cab3ae528d133d8f01bd8ef63b1a92f5cb23da
SHA256

62f8cfee286a706856ebe02b176db9169ae776c6609c23016868887ea6b0ab98
SHA512

c24970775e8da3f46763824b22fbccdbd2741836cdc3bd9966ef639db8db28cb1b888875da2babab037df6e26e5774f475f55ba10b6f354504185de4d5f4713f
SSDEEP

1536:VjTDKqibq1iqHNTcNbRn8smHeC403WAx:VjTDKqibq1iqH6NbRnyt39x

Score

10^/10

asyncrat default defense_evasion discovery execution rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

A 13

Botnet

Default

163.172.125.253:333

Mutex

AsyncMutex_555223

Attributes

delay
3
install
false
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 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1812	powershell.exe
2084	powershell.exe
604	powershell.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

Clear artifacts associated with previously established persistence like scheduletasks on a host.

defense_evasion

Clear Persistence

T1070.009

pid	Process
1832	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 1532	2532	333.exe	32

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 14 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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	333.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
944	taskkill.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
1632	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2532	333.exe
2084	powershell.exe
2532	333.exe
2532	333.exe
2084	powershell.exe
2084	powershell.exe
2084	powershell.exe
2084	powershell.exe
604	powershell.exe
816	powershell.exe
1812	powershell.exe
2532	333.exe
2532	333.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	333.exe
Token: SeDebugPrivilege	2084	powershell.exe
Token: SeDebugPrivilege	944	taskkill.exe
Token: SeDebugPrivilege	604	powershell.exe
Token: SeDebugPrivilege	816	powershell.exe
Token: SeDebugPrivilege	1812	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2532	333.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 2532 wrote to memory of 1532	2532	333.exe	32
PID 1532 wrote to memory of 1832	1532	aspnet_compiler.exe	33
PID 1532 wrote to memory of 1832	1532	aspnet_compiler.exe	33
PID 1532 wrote to memory of 1832	1532	aspnet_compiler.exe	33
PID 1532 wrote to memory of 1832	1532	aspnet_compiler.exe	33
PID 1832 wrote to memory of 1240	1832	cmd.exe	35
PID 1832 wrote to memory of 1240	1832	cmd.exe	35
PID 1832 wrote to memory of 1240	1832	cmd.exe	35
PID 1832 wrote to memory of 1240	1832	cmd.exe	35
PID 2532 wrote to memory of 2084	2532	333.exe	36
PID 2532 wrote to memory of 2084	2532	333.exe	36
PID 2532 wrote to memory of 2084	2532	333.exe	36
PID 2532 wrote to memory of 2084	2532	333.exe	36
PID 2084 wrote to memory of 2112	2084	powershell.exe	38
PID 2084 wrote to memory of 2112	2084	powershell.exe	38
PID 2084 wrote to memory of 2112	2084	powershell.exe	38
PID 2084 wrote to memory of 2112	2084	powershell.exe	38
PID 2084 wrote to memory of 2480	2084	powershell.exe	39
PID 2084 wrote to memory of 2480	2084	powershell.exe	39
PID 2084 wrote to memory of 2480	2084	powershell.exe	39
PID 2084 wrote to memory of 2480	2084	powershell.exe	39
PID 2480 wrote to memory of 2272	2480	WScript.exe	40
PID 2480 wrote to memory of 2272	2480	WScript.exe	40
PID 2480 wrote to memory of 2272	2480	WScript.exe	40
PID 2480 wrote to memory of 2272	2480	WScript.exe	40
PID 2272 wrote to memory of 944	2272	cmd.exe	42
PID 2272 wrote to memory of 944	2272	cmd.exe	42
PID 2272 wrote to memory of 944	2272	cmd.exe	42
PID 2272 wrote to memory of 944	2272	cmd.exe	42
PID 2272 wrote to memory of 604	2272	cmd.exe	43
PID 2272 wrote to memory of 604	2272	cmd.exe	43
PID 2272 wrote to memory of 604	2272	cmd.exe	43
PID 2272 wrote to memory of 604	2272	cmd.exe	43
PID 2112 wrote to memory of 816	2112	WScript.exe	44
PID 2112 wrote to memory of 816	2112	WScript.exe	44
PID 2112 wrote to memory of 816	2112	WScript.exe	44
PID 2112 wrote to memory of 816	2112	WScript.exe	44
PID 816 wrote to memory of 1920	816	powershell.exe	46
PID 816 wrote to memory of 1920	816	powershell.exe	46
PID 816 wrote to memory of 1920	816	powershell.exe	46
PID 816 wrote to memory of 1920	816	powershell.exe	46
PID 1920 wrote to memory of 1632	1920	cmd.exe	47
PID 1920 wrote to memory of 1632	1920	cmd.exe	47
PID 1920 wrote to memory of 1632	1920	cmd.exe	47
PID 1920 wrote to memory of 1632	1920	cmd.exe	47
PID 2532 wrote to memory of 1812	2532	333.exe	48
PID 2532 wrote to memory of 1812	2532	333.exe	48
PID 2532 wrote to memory of 1812	2532	333.exe	48
PID 2532 wrote to memory of 1812	2532	333.exe	48

C:\Users\Admin\AppData\Local\Temp\333.exe
"C:\Users\Admin\AppData\Local\Temp\333.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C schtasks /delete /tn "Windows Update Service" /f
    3⤵
    - Indicator Removal: Clear Persistence
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1832
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /delete /tn "Windows Update Service" /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:1240
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" –ExecutionPolicy Bypass -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\bvkxhl.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\ProgramData\Player800\xx.vbs"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2112
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" C:\ProgramData\Player800\xx.bat
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:816
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd /c ""C:\ProgramData\Player800\xx.bat""
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1920
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks.exe /create /tn Player800 /sc minute /mo 3 /tr "C:\ProgramData\Player800\Cotrl.vbs"
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1632
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\ProgramData\Player800\Cotrl.vbs"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2480
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\ProgramData\Player800\Cotrl.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2272
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /F /IM powershell.exe /T
        5⤵
        System Location Discovery: System Language Discovery
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:944
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        PowerShell -NoProfile -ExecutionPolicy Bypass -Command C:\ProgramData\Player800\Cotrl.ps1
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:604
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" –ExecutionPolicy Bypass -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\qxsrig.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1812

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

Indicator Removal

T1070

Clear Persistence

T1070.009

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Player800\Cotrl.bat

Filesize
126B

MD5
8413f11ac195ec3844e954ac45538500

SHA1
3e0586796f1202aca0c5f6af6c14781ec2660521

SHA256
e1b4f887211f1a6f6af637d98a26dba4318cf1f8500f5a17f62154d4fcca3225

SHA512
b7481dde45b9b4fc83731cb2b51b38c1f971b2f87c948e09f8105ab2b5dd40a16f160e529c9acd38f7f5f36cf3802c33c8e7d42235092d6770bd913d69750118

Download Submit
C:\ProgramData\Player800\Cotrl.ps1

Filesize
172KB

MD5
bdefa9dbc66e6c71dea43df83551425a

SHA1
4e51dc57c3a6990615a84bd3895a20b65d6c917a

SHA256
3f3df1ff8cd87d96596cab1c8f2d46f0bb0679cce991a31a9e0d40ed559538aa

SHA512
6fc06e71d1b957dfe2235c779f0e82edd74a53ca89ad69d48dda040b015b97fe1c65896cc0f052a1b95cc8f5216b65475f6dc9b076c5677b11041261c8bbf4f6

Download Submit
C:\ProgramData\Player800\Cotrl.vbs

Filesize
633B

MD5
0704a2ff56715d462324e74432c452c3

SHA1
f20f04dc68c2dd4786f24e01ab661c7eb1b0d763

SHA256
1adf93db95f147dc8d83a90720f746619897b7a0dd29f76d57e138a8276a52f7

SHA512
1d614aaf75a240430071d64b889fe7c08251821fbb7786164cc5de8e339813999c4aff385a363cf074a1562aae1799fdaaea1205aecbda6c22d5d7a8eb404494

Download Submit
C:\ProgramData\Player800\xx.bat

Filesize
99B

MD5
e61680324b182019ff5c19318328af2c

SHA1
873bb4a2b81f547d7e96af7630b6a7ec046fadde

SHA256
136c19925edd50e80762854c743f995442756a24a8bbe2881eb2dd2b29e60ea1

SHA512
b7c032fce7ad525c6dbea1c4652f481597345bc4a44334cc53acdbd3e70f50b60a56e3a6b45d3eca449db2102815eaeef8a892e795a96211cef26ee6c834e1ab

Download Submit
C:\ProgramData\Player800\xx.vbs

Filesize
777B

MD5
451b8ecc6199593ff330395bde5724b2

SHA1
2e64df5e6accca8e497fb16bcbbb4e44c67a6ad3

SHA256
6aaa311e7ea5f886df73a5058e44589272b29f5fa4ff8fb497ff6c1694042987

SHA512
d3f350a7cd3121940fbeba7cede07ffa49fc66466e28de9beafc1b27d3324e7a732d1cd591f86b45da30d6f61b0e7740b440afd590d20cc2dbb908678c5dc155

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabB647.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarCB40.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\bvkxhl.ps1

Filesize
175KB

MD5
8e3c298bfec35470897383407038f653

SHA1
d231448a508649c8aa163bbc9e605bd417c3c0ff

SHA256
0ac77c14accd3fe938f7f7465aecf709b218d323b07c04a20e2deff0fc968dff

SHA512
cac0dbd264cce5ed6d37c2a54e7b8fe6120ade57e3c72fc1a92608cbc17ce0439b88eb7045c10b7ffc63892653ec19269f875b86f39b3452e36acb4a3dc39a10

Download Submit
C:\Users\Admin\AppData\Local\Temp\qxsrig.ps1

Filesize
615B

MD5
eb620b32fbda807e2d3d85c9ea7e7ecf

SHA1
3f07ce18947ee7ac4e9395d3d99746edd6055826

SHA256
d089f984fe9f0794217ede2c54e90972763fc518b3059e6d28c83c2b5ab793b5

SHA512
a2bfd7a501cd258516a978c8d21f2a387e4b955153d1cf76c6ad5f855dc618caffa67122994672dc8f9bd49539144884476aa5182fdcf9b2239d6da477500586

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

Filesize
7KB

MD5
87710c9b357759db842391af298e211f

SHA1
dac02d45f1a3e9143d78d7fc27b16fcd815e3faf

SHA256
9fbc26e71f134383aa772950b2cd0840d3af9e6cb977f225d7692e23ad42b982

SHA512
c479244747b47931e9d73e2fbb930a43a4ca78f24b3119a27abe31e35efbc854f42760c4e43bac984588e4e21ca9807eff7231a0cfdd762a32c64f8821b98b0a

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

Filesize
7KB

MD5
57776a0791a72fda606aad0e7c8d34db

SHA1
882d6983eb2034c9a24a111e699f14f9b4fbc0cf

SHA256
a1ca29900a6e3db4511811754bb9be4dc11efd678f08020cce4150e02e27d43b

SHA512
beab6bd408849cbc24e2fcf476ae99b5c79d7848de6667a674da694f64a91a367d26d16e44e524bab7c9c3c6f82fe6edc8bfafc9dd0b1c392311f9c2bd3e653d

Download Submit
memory/1532-57-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-59-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-69-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-71-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-61-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-73-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/1532-74-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/1532-63-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1532-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1532-67-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2532-75-0x0000000000A80000-0x0000000000A8C000-memory.dmp

Filesize
48KB

Download
memory/2532-72-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2532-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/2532-38-0x00000000009E0000-0x00000000009EE000-memory.dmp

Filesize
56KB

Download
memory/2532-19-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/2532-2-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2532-1-0x0000000000F40000-0x0000000000F56000-memory.dmp

Filesize
88KB

Download