asyncrat | d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
13-07-2024 12:34

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General

Target

d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe
Size

2.1MB
MD5

6d87f123772612929da682d8097938be
SHA1

563fa72a6b4b2084db8a54f3fc9076b9b744e8cb
SHA256

d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7
SHA512

cd09c640eb2598b2a31c2aa9cbdf79920256a1d7e4fd7d5771fc4a837fd74a284532b14da397a380b8f363ed00130b5af40224242609a49c15c4955ac97925fe
SSDEEP

24576:ve3yAGxmrk7ugY2yDWAzBOFaeLWxtUPom69bX83RJV6VPzKZUvW32r0enf3ELps8:ve9Q7ugcrvtUXCbXwcT1QMUdLlbU5M9

Score

10^/10

asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Mutex

Aakn1515knAakn1515kn

Attributes

c2_url_file
http://update-checker-status.cc/OCB-Async.txt
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1210443139-7911939-2760828654-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Goods\\Fines.exe\","	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5376 set thread context of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe
Token: SeDebugPrivilege	3348	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83
PID 5376 wrote to memory of 3348	5376	d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe	83

C:\Users\Admin\AppData\Local\Temp\d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe
"C:\Users\Admin\AppData\Local\Temp\d8ccf0d00dbf712744ba342e641ad6faf8d917254e7fd44cef4e0e4cb3ac99c7.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5376
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3348-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3348-17-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/3348-16-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/3348-15-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/3348-14-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/5376-4-0x0000000005670000-0x0000000005702000-memory.dmp

Filesize
584KB

Download
memory/5376-6-0x00000000059F0000-0x0000000005BFE000-memory.dmp

Filesize
2.1MB

Download
memory/5376-7-0x0000000006210000-0x0000000006232000-memory.dmp

Filesize
136KB

Download
memory/5376-8-0x0000000006340000-0x0000000006697000-memory.dmp

Filesize
3.3MB

Download
memory/5376-9-0x000000003E6C0000-0x000000003E726000-memory.dmp

Filesize
408KB

Download
memory/5376-5-0x0000000005640000-0x000000000564A000-memory.dmp

Filesize
40KB

Download
memory/5376-13-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/5376-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/5376-3-0x0000000074DA0000-0x0000000075551000-memory.dmp

Filesize
7.7MB

Download
memory/5376-2-0x0000000005C20000-0x00000000061C6000-memory.dmp

Filesize
5.6MB

Download
memory/5376-1-0x0000000000840000-0x0000000000A5C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads