asyncrat | 31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2025 02:51

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General

Target

31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
Size

950KB
MD5

a8a4aa9c047894582f100213370da8de
SHA1

e7b4d9747c787599947d9944cc90ed36c31984b4
SHA256

31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7
SHA512

235b0a604d73ea9a45c3db63693cf1a6ee3f38ea783c22568af233252a41c7018dd77b96f70020e2e97c0f2843b316b270a023d95983c55cdc72c6ecc86df0c9
SSDEEP

24576:Gu6J33O0c+JY5UZ+XC0kGso6Fat0svhWWY:Iu0c++OCvkGs9Fat0sv7Y

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

87.120.120.15:4449

Mutex

ykpleyrgtopul

Attributes

delay
10
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vitrailist.vbs	vitrailist.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	vitrailist.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0007000000023caf-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4008 set thread context of 552	4008	vitrailist.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
888	552	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 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	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vitrailist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4008	vitrailist.exe
4008	vitrailist.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	RegSvcs.exe
Token: SeIncreaseQuotaPrivilege	552	RegSvcs.exe
Token: SeSecurityPrivilege	552	RegSvcs.exe
Token: SeTakeOwnershipPrivilege	552	RegSvcs.exe
Token: SeLoadDriverPrivilege	552	RegSvcs.exe
Token: SeSystemProfilePrivilege	552	RegSvcs.exe
Token: SeSystemtimePrivilege	552	RegSvcs.exe
Token: SeProfSingleProcessPrivilege	552	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	552	RegSvcs.exe
Token: SeCreatePagefilePrivilege	552	RegSvcs.exe
Token: SeBackupPrivilege	552	RegSvcs.exe
Token: SeRestorePrivilege	552	RegSvcs.exe
Token: SeShutdownPrivilege	552	RegSvcs.exe
Token: SeDebugPrivilege	552	RegSvcs.exe
Token: SeSystemEnvironmentPrivilege	552	RegSvcs.exe
Token: SeRemoteShutdownPrivilege	552	RegSvcs.exe
Token: SeUndockPrivilege	552	RegSvcs.exe
Token: SeManageVolumePrivilege	552	RegSvcs.exe
Token: 33	552	RegSvcs.exe
Token: 34	552	RegSvcs.exe
Token: 35	552	RegSvcs.exe
Token: 36	552	RegSvcs.exe
Token: SeIncreaseQuotaPrivilege	552	RegSvcs.exe
Token: SeSecurityPrivilege	552	RegSvcs.exe
Token: SeTakeOwnershipPrivilege	552	RegSvcs.exe
Token: SeLoadDriverPrivilege	552	RegSvcs.exe
Token: SeSystemProfilePrivilege	552	RegSvcs.exe
Token: SeSystemtimePrivilege	552	RegSvcs.exe
Token: SeProfSingleProcessPrivilege	552	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	552	RegSvcs.exe
Token: SeCreatePagefilePrivilege	552	RegSvcs.exe
Token: SeBackupPrivilege	552	RegSvcs.exe
Token: SeRestorePrivilege	552	RegSvcs.exe
Token: SeShutdownPrivilege	552	RegSvcs.exe
Token: SeDebugPrivilege	552	RegSvcs.exe
Token: SeSystemEnvironmentPrivilege	552	RegSvcs.exe
Token: SeRemoteShutdownPrivilege	552	RegSvcs.exe
Token: SeUndockPrivilege	552	RegSvcs.exe
Token: SeManageVolumePrivilege	552	RegSvcs.exe
Token: 33	552	RegSvcs.exe
Token: 34	552	RegSvcs.exe
Token: 35	552	RegSvcs.exe
Token: 36	552	RegSvcs.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
4008	vitrailist.exe
4008	vitrailist.exe

Suspicious use of SendNotifyMessage 5 IoCs

pid	Process
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
4008	vitrailist.exe
4008	vitrailist.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1124 wrote to memory of 4008	1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe	82
PID 1124 wrote to memory of 4008	1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe	82
PID 1124 wrote to memory of 4008	1124	31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe	82
PID 4008 wrote to memory of 552	4008	vitrailist.exe	83
PID 4008 wrote to memory of 552	4008	vitrailist.exe	83
PID 4008 wrote to memory of 552	4008	vitrailist.exe	83
PID 4008 wrote to memory of 552	4008	vitrailist.exe	83

C:\Users\Admin\AppData\Local\Temp\31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe
"C:\Users\Admin\AppData\Local\Temp\31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1124
- C:\Users\Admin\AppData\Local\savagenesses\vitrailist.exe
  "C:\Users\Admin\AppData\Local\Temp\31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:552
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 552 -s 1304
      4⤵
      Program crash
      PID:888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 552 -ip 552
1⤵
PID:5104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\savagenesses\vitrailist.exe

Filesize
950KB

MD5
a8a4aa9c047894582f100213370da8de

SHA1
e7b4d9747c787599947d9944cc90ed36c31984b4

SHA256
31c1b7a32fed169045d32fda5b53a1bcc9e2919ef9217b3232380f89869204c7

SHA512
235b0a604d73ea9a45c3db63693cf1a6ee3f38ea783c22568af233252a41c7018dd77b96f70020e2e97c0f2843b316b270a023d95983c55cdc72c6ecc86df0c9

Download Submit
memory/552-20-0x0000000000410000-0x0000000000428000-memory.dmp

Filesize
96KB

Download
memory/552-21-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/552-22-0x0000000004F60000-0x0000000005504000-memory.dmp

Filesize
5.6MB

Download
memory/552-24-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/552-25-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/552-26-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/552-27-0x0000000004A50000-0x0000000004AB6000-memory.dmp

Filesize
408KB

Download
memory/552-28-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1124-6-0x0000000001510000-0x0000000001910000-memory.dmp

Filesize
4.0MB

Download
memory/4008-18-0x0000000001630000-0x0000000001A30000-memory.dmp

Filesize
4.0MB

Download