asyncrat | 18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173

General

Target

734CEFFDDCF39DF0E5C2259E6EBB975B.exe
Size

954KB
MD5

734ceffddcf39df0e5c2259e6ebb975b
SHA1

f8a544bbe088f09308a01dc598ddaac7cd89a552
SHA256

18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173
SHA512

4206ed733ddd620a5562c6faf0034416bb27f42cfbf84d7af59683a6742b194b066346c021546346993f4deda011db1ce4ba0e7aa8dc8cca9611e00abc8f88f2
SSDEEP

24576:ju6J33O0c+JY5UZ+XC0kGso6Fak3X20cyWY:tu0c++OCvkGs9FaknLYY

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

69.174.100.131:6606

Mutex

abkZfsCYRZhk

Attributes

delay
10
install
false
install_file
order.exe
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\tabulations.vbs	tabulations.exe

Executes dropped EXE 1 IoCs

pid	Process
440	tabulations.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0007000000023c93-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 440 set thread context of 2052	440	tabulations.exe	85

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	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tabulations.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
440	tabulations.exe
440	tabulations.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	RegSvcs.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
440	tabulations.exe
440	tabulations.exe
440	tabulations.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
440	tabulations.exe
440	tabulations.exe
440	tabulations.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 440	1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	83
PID 1488 wrote to memory of 440	1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	83
PID 1488 wrote to memory of 440	1488	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	83
PID 440 wrote to memory of 2052	440	tabulations.exe	85
PID 440 wrote to memory of 2052	440	tabulations.exe	85
PID 440 wrote to memory of 2052	440	tabulations.exe	85
PID 440 wrote to memory of 2052	440	tabulations.exe	85

C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.exe
"C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Users\Admin\AppData\Local\undiscernibleness\tabulations.exe
  "C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.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:440
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2052

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\undiscernibleness\tabulations.exe

Filesize
954KB

MD5
734ceffddcf39df0e5c2259e6ebb975b

SHA1
f8a544bbe088f09308a01dc598ddaac7cd89a552

SHA256
18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173

SHA512
4206ed733ddd620a5562c6faf0034416bb27f42cfbf84d7af59683a6742b194b066346c021546346993f4deda011db1ce4ba0e7aa8dc8cca9611e00abc8f88f2

Download Submit
memory/440-18-0x0000000001260000-0x0000000001660000-memory.dmp

Filesize
4.0MB

Download
memory/1488-6-0x0000000001480000-0x0000000001880000-memory.dmp

Filesize
4.0MB

Download
memory/2052-20-0x00000000007B0000-0x00000000007C2000-memory.dmp

Filesize
72KB

Download
memory/2052-21-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2052-22-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2052-23-0x0000000074190000-0x0000000074940000-memory.dmp

Filesize
7.7MB

Download
memory/2052-26-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/2052-27-0x0000000005CF0000-0x0000000006294000-memory.dmp

Filesize
5.6MB

Download
memory/2052-28-0x00000000052E0000-0x0000000005346000-memory.dmp

Filesize
408KB

Download
memory/2052-29-0x0000000074190000-0x0000000074940000-memory.dmp

Filesize
7.7MB

Download

Analysis

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