Analysis
-
max time kernel
109s -
max time network
119s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2023 04:55
Behavioral task
behavioral1
Sample
user-PC.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
user-PC.exe
Resource
win10v2004-20221111-en
General
-
Target
user-PC.exe
-
Size
114KB
-
MD5
13339515c6424f70fdfcbfa1d5f22cba
-
SHA1
24947a5af2576155e13b2af69337d645ccd9ccff
-
SHA256
5457e63322d9eed080807b8fcc91bf1db6b71418f9f56a28a1f77e3de2e9053f
-
SHA512
f49203cd23e7ee614d1ab89453d29e02e93c0e0814eff27c841b825493ca3842dd88861769df87c9c7df31b568f46eba56f833c0622a7d85556c3bc522740544
-
SSDEEP
3072:EgZApdYrD28fbJB2yLtyTkbjjxK3QdjrxivW+DXnH4vymbs1j:E/pe1J0kbXtrxivW+D34vq
Malware Config
Signatures
-
VanillaRat
VanillaRat is an advanced remote administration tool coded in C#.
-
Vanilla Rat payload 3 IoCs
resource yara_rule behavioral2/memory/4644-132-0x00000000005F0000-0x0000000000612000-memory.dmp vanillarat behavioral2/files/0x000300000001e77a-137.dat vanillarat behavioral2/files/0x000300000001e77a-138.dat vanillarat -
Executes dropped EXE 1 IoCs
pid Process 3916 user-PC.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation user-PC.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\user-PC = "C:\\Users\\Admin\\AppData\\Roaming\\user-PC.exe" user-PC.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4644 user-PC.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4644 wrote to memory of 3916 4644 user-PC.exe 84 PID 4644 wrote to memory of 3916 4644 user-PC.exe 84 PID 4644 wrote to memory of 3916 4644 user-PC.exe 84
Processes
-
C:\Users\Admin\AppData\Local\Temp\user-PC.exe"C:\Users\Admin\AppData\Local\Temp\user-PC.exe"1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4644 -
C:\Users\Admin\AppData\Roaming\user-PC.exe"C:\Users\Admin\AppData\Roaming\user-PC.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
PID:3916
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
114KB
MD513339515c6424f70fdfcbfa1d5f22cba
SHA124947a5af2576155e13b2af69337d645ccd9ccff
SHA2565457e63322d9eed080807b8fcc91bf1db6b71418f9f56a28a1f77e3de2e9053f
SHA512f49203cd23e7ee614d1ab89453d29e02e93c0e0814eff27c841b825493ca3842dd88861769df87c9c7df31b568f46eba56f833c0622a7d85556c3bc522740544
-
Filesize
114KB
MD513339515c6424f70fdfcbfa1d5f22cba
SHA124947a5af2576155e13b2af69337d645ccd9ccff
SHA2565457e63322d9eed080807b8fcc91bf1db6b71418f9f56a28a1f77e3de2e9053f
SHA512f49203cd23e7ee614d1ab89453d29e02e93c0e0814eff27c841b825493ca3842dd88861769df87c9c7df31b568f46eba56f833c0622a7d85556c3bc522740544