Analysis
- max time kernel
143s - max time network
93s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
19/04/2026, 00:52
General
- Target QUANTUMBOOST.exe
- Size 3.0MB
- Sample260419-a77xtaaz3j
- SHA256 4ad3818ea21f244e973b12b61148e042dadc75161fdb3d01f63a16491f7854c8
Malware Config
Extracted
-
santa_stealer
-
ioc.exchange
-
ruruurururururu.ru
-
post_request
fa3c16365fd0d67f6035f379df7a375ebe1aa51e99a2dde0db92c906ed003a70
-
url_path
/api/v1/accounts
-
user_agent
MastodonClient
Signatures
- Family: SantaStealer
SantaStealer is an information stealer written in C.
- Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵
-
C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
3Credentials In Files
3Replay Monitor
Loading Replay Monitor...
Downloads
Log.txt
Log.txt
Log.txt
Log.txt
Log.txt
Log.txt
Log.txt
Log.txt
pwd_3916.db
pwd_4288.db
memory/5112-183-0x000001BFE2B10000-0x000001BFE2BFA000-memory.dmp
memory/5112-182-0x00007FF69E800000-0x00007FF6A04AD000-memory.dmp
memory/5112-186-0x00007FF69E800000-0x00007FF6A04AD000-memory.dmp
memory/5112-189-0x000001BFE2B10000-0x000001BFE2BFA000-memory.dmp
memory/5112-188-0x00007FF69E800000-0x00007FF6A04AD000-memory.dmp