Analysis
- max time kernel
94s - max time network
97s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
08/09/2024, 23:26
General
- Target d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe
- Size 58KB
- Sample240908-3e7qkatanc
- SHA256 f54dd71bb0feb30a19123b93cc9ce60b3d6e603b9b5967c472b8cc35d9618c12
Malware Config
Extracted
-
mercurialgrabber
-
https://discord.com/api/webhooks/888502856733294672/TOj_bSh6Zkm2K7SzTPO616Cabe61-suc7UYdT52jA3Da2mmB2WhCEsY9-w2h5G8rjsRY
Signatures
- Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\d5481b1558c02cc5b27eea52074e0d08_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 21363⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4856 -ip 48561⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4444-8-0x0000000075280000-0x0000000075A30000-memory.dmp
memory/4444-10-0x00000000051F0000-0x000000000520E000-memory.dmp
memory/4444-2-0x00000000053F0000-0x0000000005994000-memory.dmp
memory/4444-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp
memory/4444-4-0x0000000075280000-0x0000000075A30000-memory.dmp
memory/4444-5-0x0000000005070000-0x000000000507A000-memory.dmp
memory/4444-6-0x0000000005150000-0x00000000051C6000-memory.dmp
memory/4444-7-0x000000007528E000-0x000000007528F000-memory.dmp
memory/4444-1-0x0000000000640000-0x0000000000654000-memory.dmp
memory/4444-0-0x000000007528E000-0x000000007528F000-memory.dmp
memory/4444-9-0x0000000004ED0000-0x0000000004EE4000-memory.dmp
memory/4444-13-0x0000000075280000-0x0000000075A30000-memory.dmp
memory/4856-11-0x0000000000400000-0x0000000000410000-memory.dmp
memory/4856-14-0x0000000074A5E000-0x0000000074A5F000-memory.dmp
memory/4856-15-0x0000000074A50000-0x0000000075200000-memory.dmp
memory/4856-16-0x0000000074A50000-0x0000000075200000-memory.dmp
memory/4856-17-0x0000000005EC0000-0x0000000005F26000-memory.dmp
memory/4856-21-0x0000000074A50000-0x0000000075200000-memory.dmp