asyncrat | 33d0bc76fa1c09fe48e29f19ffd56325f1b435c4eac6c81ae7bd2ae26ab7444e

General

Target

archivo.exe
Size

1.3MB
MD5

240a6bf157e337dea52e7bf5a27f1cb8
SHA1

2773987e599d7b37e3848fadfd114b5cef35dc37
SHA256

06d02c153a476e7f2487b757c7c63685c3abd38b406acc598ad9fb76a4fb99c8
SHA512

c565881c347b9770cbbf183e50fa816a97a50601d4a537914c90d06e8eea790c8946062df1f86e0a764572c6afb0c2f01ee238ec2976aafc44f9bdfb25a583e8
SSDEEP

24576:YS+jvg5q5Dl0+FzYWWI5H4R09Y3h2OsDStIRWziIvH4Rh:YS+jvbDO6zDRUiah2OsDStI8JO

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

Default

C2

llechematerna02.kozow.com:7575

Mutex

AsyncMutex_alosh

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 2 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2800	2068	archivo.exe	30
PID 2800 set thread context of 2592	2800	cmd.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2068	archivo.exe
2068	archivo.exe
2800	cmd.exe
2800	cmd.exe
2592	MSBuild.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2068	archivo.exe
2800	cmd.exe
2800	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2592	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2592	MSBuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2800	2068	archivo.exe	30
PID 2068 wrote to memory of 2800	2068	archivo.exe	30
PID 2068 wrote to memory of 2800	2068	archivo.exe	30
PID 2068 wrote to memory of 2800	2068	archivo.exe	30
PID 2068 wrote to memory of 2800	2068	archivo.exe	30
PID 2800 wrote to memory of 2592	2800	cmd.exe	32
PID 2800 wrote to memory of 2592	2800	cmd.exe	32
PID 2800 wrote to memory of 2592	2800	cmd.exe	32
PID 2800 wrote to memory of 2592	2800	cmd.exe	32
PID 2800 wrote to memory of 2592	2800	cmd.exe	32
PID 2800 wrote to memory of 2592	2800	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\archivo.exe
"C:\Users\Admin\AppData\Local\Temp\archivo.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\SysWOW64\cmd.exe
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2592

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

C:\Users\Admin\AppData\Local\Temp\fe829a3b

Filesize
779KB

MD5
2838c8ca6e8d3ee94d195a5d2088cc48

SHA1
8cfe6f4253406e922aec73cf2aeda7ee5e7b1209

SHA256
ff763744ae1f5ece9c1401b6e29b4a863dcf9a4dedb2166b5135e7c7f413dcc4

SHA512
f9dad71af4fa2ee4686ccc0630faef2c5cfb0881c4abccf7e0851c064f4445d0633f469d2e7991b4f5fb7c7e6bff2988f40a817ac33aa375915827cfaec10311

Download Submit
memory/2068-0-0x000007FEF64E0000-0x000007FEF6638000-memory.dmp

Filesize
1.3MB

Download
memory/2068-7-0x000007FEF64F9000-0x000007FEF64FA000-memory.dmp

Filesize
4KB

Download
memory/2068-8-0x000007FEF64E0000-0x000007FEF6638000-memory.dmp

Filesize
1.3MB

Download
memory/2068-9-0x000007FEF64E0000-0x000007FEF6638000-memory.dmp

Filesize
1.3MB

Download
memory/2592-33-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/2592-27-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-32-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-31-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2592-30-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/2592-34-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-25-0x0000000072B70000-0x0000000073BD2000-memory.dmp

Filesize
16.4MB

Download
memory/2592-28-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-23-0x0000000074EE0000-0x0000000075054000-memory.dmp

Filesize
1.5MB

Download
memory/2800-26-0x0000000074EE0000-0x0000000075054000-memory.dmp

Filesize
1.5MB

Download
memory/2800-29-0x0000000074EEE000-0x0000000074EF2000-memory.dmp

Filesize
16KB

Download
memory/2800-22-0x0000000074EE0000-0x0000000075054000-memory.dmp

Filesize
1.5MB

Download
memory/2800-15-0x0000000074EE0000-0x0000000075054000-memory.dmp

Filesize
1.5MB

Download
memory/2800-13-0x0000000074EE0000-0x0000000075054000-memory.dmp

Filesize
1.5MB

Download
memory/2800-12-0x0000000077790000-0x0000000077939000-memory.dmp

Filesize
1.7MB

Download
memory/2800-14-0x0000000074EEE000-0x0000000074EF2000-memory.dmp

Filesize
16KB

Download

Analysis

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