asyncrat | 80f785a35f7487df96bb17b1fe2a67f188417ad017db8efac8d83b3858efcd96

General

Target

vlc.exe
Size

83KB
MD5

56908392d21ec7d8be04f7bbd59732c2
SHA1

c864ef983e05ec65fcb4c9ef19444eef8728cc2b
SHA256

80f785a35f7487df96bb17b1fe2a67f188417ad017db8efac8d83b3858efcd96
SHA512

6d6aa7cc3bc963d8c0ed2eca6250f6a09ca69228704dabf5998bf8069708fbe4739a8e4ca47086cd937984b58c029af239442ac6227335320e51fc6d40e9e981
SSDEEP

1536:msGVpglGkHHFwPtwKOl2Dp+jZuMzJAGdjl:NV9OFtOAQQMzJVdjl

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

2.58.56.22:5211

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_file
Spoofer.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1000-140-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vlc = "C:\\Program Files (x86)\\vlc\\vlc.exe"	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vlc.exe

description pid process target process

PID 1888 set thread context of 1000 1888 vlc.exe RegAsm.exe
Drops file in Program Files directory 1 IoCs

Processes:

vlc.exe

description ioc process

File created C:\Program Files (x86)\vlc\vlc.exe vlc.exe

description	pid	process	target process
PID 1888 set thread context of 1000	1888	vlc.exe	RegAsm.exe

description	ioc	process
File created	C:\Program Files (x86)\vlc\vlc.exe	vlc.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

vlc.exepowershell.exe

pid	process
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
1888	vlc.exe
2244	powershell.exe
2244	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vlc.exepowershell.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1888 vlc.exe
Token: SeDebugPrivilege 2244 powershell.exe
Token: SeDebugPrivilege 1000 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1888	vlc.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	1000	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

vlc.exe

description	pid	process	target process
PID 1888 wrote to memory of 2244	1888	vlc.exe	powershell.exe
PID 1888 wrote to memory of 2244	1888	vlc.exe	powershell.exe
PID 1888 wrote to memory of 2244	1888	vlc.exe	powershell.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe
PID 1888 wrote to memory of 1000	1888	vlc.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\vlc.exe
"C:\Users\Admin\AppData\Local\Temp\vlc.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'vlc';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'vlc' -Value '"C:\Program Files (x86)\vlc\vlc.exe"' -PropertyType 'String'
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2244

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:1000

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1000-139-0x0000000000000000-mapping.dmp

Download
memory/1000-140-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1888-136-0x0000000005A10000-0x0000000005A86000-memory.dmp

Filesize
472KB

Download
memory/1888-133-0x0000000005C60000-0x0000000006204000-memory.dmp

Filesize
5.6MB

Download
memory/1888-132-0x0000000000DB0000-0x0000000000DCA000-memory.dmp

Filesize
104KB

Download
memory/1888-137-0x0000000005C20000-0x0000000005C3E000-memory.dmp

Filesize
120KB

Download
memory/1888-135-0x0000000005920000-0x000000000592A000-memory.dmp

Filesize
40KB

Download
memory/1888-134-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/2244-141-0x0000000004E10000-0x0000000004E46000-memory.dmp

Filesize
216KB

Download
memory/2244-138-0x0000000000000000-mapping.dmp

Download
memory/2244-142-0x00000000055F0000-0x0000000005C18000-memory.dmp

Filesize
6.2MB

Download
memory/2244-143-0x0000000005320000-0x0000000005342000-memory.dmp

Filesize
136KB

Download
memory/2244-144-0x0000000005C20000-0x0000000005C86000-memory.dmp

Filesize
408KB

Download
memory/2244-145-0x0000000005D90000-0x0000000005DF6000-memory.dmp

Filesize
408KB

Download
memory/2244-146-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/2244-147-0x00000000073B0000-0x0000000007446000-memory.dmp

Filesize
600KB

Download
memory/2244-148-0x0000000006970000-0x000000000698A000-memory.dmp

Filesize
104KB

Download
memory/2244-149-0x00000000069C0000-0x00000000069E2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads