asyncrat | 4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454

General

Target

4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe
Size

64KB
MD5

254a11f9d435208efa20459c281ed8c2
SHA1

895bc765576d8c9d6f45a0076ebf4bbc82819c23
SHA256

4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454
SHA512

8efa0cb8fd0c3b56f83d7204651fd9db9e706010ad3debddffe83d3e01355379add35267aa27fdba766b07270a3925cf981c56ecac4cc429c1008618958ff0a2
SSDEEP

1536:LAnX35lynODDRtC8fJcXT0/iBlYqbVPP5feFGckOggakAX7tj:05COXmYJcXYalYUH5GFIOHAX7tj

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

oeSQUd5RFk09

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe
2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe
Token: SeDebugPrivilege	2360	RegAsm.exe
Token: SeDebugPrivilege	2360	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2336	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	31
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32
PID 2992 wrote to memory of 2360	2992	4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe	32

C:\Users\Admin\AppData\Local\Temp\4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe
"C:\Users\Admin\AppData\Local\Temp\4173877efb088a4c67894f89c2c572611f5336923e9719fd8a0b06adad909454.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2336
- 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 use of AdjustPrivilegeToken
  PID:2360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2360-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-7-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2360-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2992-1-0x00000000009A0000-0x00000000009B6000-memory.dmp

Filesize
88KB

Download
memory/2992-0-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2992-5-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download
memory/2992-4-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-3-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2992-2-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-18-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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