asyncrat | aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1

General

Target

aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
Size

1000KB
MD5

4fc60bc5d5efe63f44146bf1f1bece0d
SHA1

b6dfd1478a58caca13ed041995840ea0250cff3e
SHA256

aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1
SHA512

c90a18d004bb03b3d3efddff4c5c60448d4aa9a50f33e8a23e93ac282e927f7f70c788c19982fb5642218baa1a6b04cb2852d447aee767f32e7fa7cf6a7db6ef
SSDEEP

24576:6qDEvCTbMWu7rQYlBQcBiT6rprG8a8hXks:6TvC/MTQYxsWR7a8

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\teepees.vbs	teepees.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	teepees.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000b000000023b8e-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 216	4896	teepees.exe	83

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	teepees.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4896	teepees.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
4896	teepees.exe
4896	teepees.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
4896	teepees.exe
4896	teepees.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3096 wrote to memory of 4896	3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe	82
PID 3096 wrote to memory of 4896	3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe	82
PID 3096 wrote to memory of 4896	3096	aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe	82
PID 4896 wrote to memory of 216	4896	teepees.exe	83
PID 4896 wrote to memory of 216	4896	teepees.exe	83
PID 4896 wrote to memory of 216	4896	teepees.exe	83
PID 4896 wrote to memory of 216	4896	teepees.exe	83

C:\Users\Admin\AppData\Local\Temp\aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe
"C:\Users\Admin\AppData\Local\Temp\aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3096
- C:\Users\Admin\AppData\Local\exhilaratingly\teepees.exe
  "C:\Users\Admin\AppData\Local\Temp\aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.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:4896
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:216

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\Graff

Filesize
45KB

MD5
8a4f25859828c5b3fa6c17bbc656f588

SHA1
869bd416534ca936fb571e0b34bc193be033be70

SHA256
fe0454ad725a63ea72a36738b4cadadb744dd4783c2227efd2168866814929a5

SHA512
aef96dcbc861ee48e67d70678f5e59359100cb0c21df14e9355853fb008ce5d250fed10756c29b47d36638a0597fd3182dc6c71aab84f14f82bf32a15c81e7e5

Download Submit
C:\Users\Admin\AppData\Local\exhilaratingly\teepees.exe

Filesize
1000KB

MD5
4fc60bc5d5efe63f44146bf1f1bece0d

SHA1
b6dfd1478a58caca13ed041995840ea0250cff3e

SHA256
aab63d73293024e2c135e11929702e1fd5c2497f5885f26e5a6dc6e6409c91d1

SHA512
c90a18d004bb03b3d3efddff4c5c60448d4aa9a50f33e8a23e93ac282e927f7f70c788c19982fb5642218baa1a6b04cb2852d447aee767f32e7fa7cf6a7db6ef

Download Submit
memory/216-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/216-21-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/216-22-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/216-23-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/216-24-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/3096-6-0x0000000000F40000-0x0000000001340000-memory.dmp

Filesize
4.0MB

Download
memory/4896-18-0x0000000001120000-0x0000000001520000-memory.dmp

Filesize
4.0MB

Download

Analysis

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