asyncrat | aa7bac8f487e48aebeb4314e00ea2f965e565d7cf5add605b649f4c0dfc21b1a

General

Target

77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe
Size

8.7MB
MD5

32b22925a8b07544e2d4fc57dd79ba0f
SHA1

338fbb0d2e7b06c87c94dc7888fdb6e9d712e800
SHA256

77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7
SHA512

708a0de7a1e4d420aa9ceb85529f0fea5cacf9774732860cc037d8b359f505cddd5f59a2fa0f242fcfa0c245a299555404c26d14df91c751a661811dad5450ba
SSDEEP

98304:NF3hbrGUjo4lV0UQy82tRdC9fy56u3z2IjJYE:NvbaUjo4nlFzdC9Q6H6J

Score

10^/10

asyncrat default discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Default

C2

91.92.248.82:4343

Mutex

mjbrqycafbygy

Attributes

delay
11
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\detectw = "C:\\Users\\Admin\\AppData\\Roaming\\marketplace\\dete\\1.0.0.0\\windefragsvc.exe"	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4888 set thread context of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86

System Location Discovery: System Language Discovery 1 TTPs 2 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	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4960	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86
PID 4888 wrote to memory of 4960	4888	77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe	86

C:\Users\Admin\AppData\Local\Temp\77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe
"C:\Users\Admin\AppData\Local\Temp\77e6d7aee5bef0a0ea6ab7ada94420b3ddef461bc51b0fface3a75e2eb1965e7.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4888-6-0x00000000075E0000-0x0000000007766000-memory.dmp

Filesize
1.5MB

Download
memory/4888-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/4888-2-0x00000000067A0000-0x0000000006D44000-memory.dmp

Filesize
5.6MB

Download
memory/4888-3-0x00000000061F0000-0x0000000006282000-memory.dmp

Filesize
584KB

Download
memory/4888-4-0x00000000061D0000-0x00000000061DA000-memory.dmp

Filesize
40KB

Download
memory/4888-5-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4888-1-0x0000000000F10000-0x00000000017C0000-memory.dmp

Filesize
8.7MB

Download
memory/4888-8-0x0000000008C20000-0x0000000008F6C000-memory.dmp

Filesize
3.3MB

Download
memory/4888-14-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4960-10-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4960-9-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4960-13-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4960-15-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4960-16-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads