asyncrat | 7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208

Resubmissions

12/01/2025, 09:31

250112-lhklrsyqem 10

12/01/2025, 03:05

250112-dlntlawjcj 10

Analysis

max time kernel
900s
max time network
840s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/01/2025, 09:31

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General

Target

7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe
Size

64KB
MD5

a310cc04b62041888f7168a1154fc470
SHA1

f565137db4db66aabb35665f05bd3a588ddeb01e
SHA256

7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208
SHA512

7b7da4c34561d7cc597c148b2f91aea2a35d846a146cb5a6032f8d20e0366bcb1aebc43a0cdd45c65202793882d7de1b1d4de3846e443c8be2bef5789febcf75
SSDEEP

1536:LAnX35lynODDRtC8fJcXT0/iBlYqbVPP5feFGckOggakAX7t:05COXmYJcXYalYUH5GFIOHAX7t

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

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 1640 set thread context of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30

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	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	RegAsm.exe
Token: SeDebugPrivilege	2412	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30
PID 1640 wrote to memory of 2412	1640	7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe	30

C:\Users\Admin\AppData\Local\Temp\7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe
C:\Users\Admin\AppData\Local\Temp\7c66ba80afb8f7c244088b3913c0d8bb344bd77f75a6e989b5a222b8b6ece208N.exe cmd /c %SIGILL% "SIGTERM|SIGKILL|SIGABRT"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1640
- 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:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1640-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/1640-1-0x00000000011B0000-0x00000000011C6000-memory.dmp

Filesize
88KB

Download
memory/1640-2-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-3-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-4-0x00000000003F0000-0x0000000000404000-memory.dmp

Filesize
80KB

Download
memory/1640-16-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2412-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2412-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-7-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2412-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download