General
- Target http://sacsingapore.org
- Sample260808-fsaxes1bph
Score
9/10
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
http://sacsingapore.org
Resource
win11ltsc2024-20260709-en
55 signatures
600 seconds
Malware Config
Targets
-
- Target http://sacsingapore.org
Score9/10-
.NET loader stage by imphash + section/import shape
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CLR-hosted .NET infostealer assembly: GDI screen capture + AES CryptoStream + raw TcpClient exfil +
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CLR-hosted .NET infostealer: reflective assembly + browser cred theft + AES socket exfil
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CLR-hosting MZER loader (student_s.bin, /std/ branch); boots .NET/Donut infostealer via mscoree.
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CLR-hosting MZER loader stage (my_sss.bin / student_s.bin), ~276KB
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ClickFix injector, disguise-independent: newState canary + heavy obfuscator.io. Catches fake-CSS, li
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ClickFix v8 — MZER custom loader stub with x64 PIC bootstrapper
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Complete MZER GetPC stub as a code-anchor (immediate wildcarded)
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Donut .NET loader by imphash — stable across all waves/branches despite per-lure SHA-256 churn
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Dropped persistence set under C:\ProgramData\<16hex>\: legit signed sideload host LockScreenContentS
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Dual-chain EtherHiding bootstrap: Polygon-mainnet + BSC-testnet RPC pool w/ eth_call read
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Embedded RSA-1024 C2 handshake public key (CAPI RSA1 blob, e=65537). Client RSA-wraps the AES sessio
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Fires on any WP-002 chain component
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Injected CLR-hosted .NET infostealer (memory scan): AES-over-raw-TCP + screen capture + WMI recon
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MZER polyglot header + complete GetPC self-locating x64 stub (branch immediate wildcarded)
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MZER polyglot header: position-independent Donut shellcode masquerading as PE (cross-version cluster
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MZER polyglot: MZ-lookalike header that is also a GetPC self-locating x64 stub
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MZER polyglot: MZ-lookalike header that is also a GetPC self-locating x64 stub (offset 0). Durable c
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MZER-polyglot Donut loader family: header + GetPC bootstrap prologue at offset 0
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NEW in V12.1: native MinGW-w64/GCC-15 WinHTTP downloader stage fetching enterprise/student_s.bin
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Native PE32+ loader: process-enum + remote-thread injection + WinHTTP stage fetch
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Network IOCs for the WP-002 stage host and C2 gate
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Server-templated ClickFix widget (fake Cloudflare Turnstile) with REPLACE_SERVER placeholder + clipb
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Stable WP-002 inject idioms (window['atob'] split-concat + Uint8Array XOR stub); catches string-encr
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V12 C2/lure/stage-2 domains, IPs and stage path
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V12.1 infra: new stage-2 IP, recycled V11 C2 domain, TDS, lure host, EtherHiding contract
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WinHTTP downloader by imphash — durable cross-wave-cluster pivot
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WinHTTP downloader/injector MZER stage (std_enterprise ~50KB).
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WinHTTP downloader/injector MZER stage, ~50KB
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obfuscator.io RC4/rotate loader family (V7-V12.1). Decoder-shape; no cleartext eth_call dependency.
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obfuscator.io RC4/rotate loader — decoder-shape (NO cleartext eth_call dependency; fixes V12 gap)
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Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
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Downloads MZ/PE file
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1