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
2724	tabulations.exe

Loads dropped DLL 1 IoCs

pid	Process
2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x00340000000191f6-8.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2708	2724	tabulations.exe	31

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 1 IoCs

pid	Process
2724	tabulations.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
2724	tabulations.exe
2724	tabulations.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe
2724	tabulations.exe
2724	tabulations.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2724	2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	30
PID 2232 wrote to memory of 2724	2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	30
PID 2232 wrote to memory of 2724	2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	30
PID 2232 wrote to memory of 2724	2232	734CEFFDDCF39DF0E5C2259E6EBB975B.exe	30
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31
PID 2724 wrote to memory of 2708	2724	tabulations.exe	31

C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.exe
"C:\Users\Admin\AppData\Local\Temp\734CEFFDDCF39DF0E5C2259E6EBB975B.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2232
- 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:2724
- - 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:2708

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab76D7.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
\Users\Admin\AppData\Local\undiscernibleness\tabulations.exe

Filesize
954KB

MD5
734ceffddcf39df0e5c2259e6ebb975b

SHA1
f8a544bbe088f09308a01dc598ddaac7cd89a552

SHA256
18725cce353d29c5fb73d6b93b17e0ddef59e53bc19c637cc15a96b921fcc173

SHA512
4206ed733ddd620a5562c6faf0034416bb27f42cfbf84d7af59683a6742b194b066346c021546346993f4deda011db1ce4ba0e7aa8dc8cca9611e00abc8f88f2

Download Submit
memory/2232-6-0x0000000000BE0000-0x0000000000FE0000-memory.dmp

Filesize
4.0MB

Download
memory/2708-22-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2708-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2708-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2708-27-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/2708-28-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/2708-29-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2708-46-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-20-0x0000000000C70000-0x0000000001070000-memory.dmp

Filesize
4.0MB

Download

Analysis

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