Analysis
- max time kernel
132s - max time network
170s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
01/01/2024, 19:42
General
- Target 1015bf264695f7c2cbeaba91c9fa07a5.exe
- Size 4.7MB
- Sample240101-yerxwsbab6
- SHA256 7b9da4b3b552933acba5bc69d25232a50ef005b3c326888995da0597885843bd
Malware Config
Extracted
-
mercurialgrabber
-
https://discord.com/api/webhooks/875240417245950012/o1PrzHEt2aTJ_kb3nbEaoFG0hQahpLa7nZzcWhyVq8cuz-PEXjBtwQDtotocg7zufDkU
Signatures
- Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 5 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies system certificate store 2 TTPs 5 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1015bf264695f7c2cbeaba91c9fa07a5.exe"C:\Users\Admin\AppData\Local\Temp\1015bf264695f7c2cbeaba91c9fa07a5.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\MAXIMUS.EXE"C:\Users\Admin\AppData\Local\Temp\MAXIMUS.EXE"2⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Temp\OUTPUT (2).EXE"C:\Users\Admin\AppData\Local\Temp\OUTPUT (2).EXE"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
MAXIMUS.EXE
MAXIMUS.EXE
MAXIMUS.EXE
OUTPUT (2).EXE
memory/2192-27-0x0000000002E10000-0x0000000002E20000-memory.dmp
memory/2192-24-0x0000000000D40000-0x0000000000D50000-memory.dmp
memory/2192-26-0x00007FF958490000-0x00007FF958F51000-memory.dmp
memory/2192-33-0x00007FF958490000-0x00007FF958F51000-memory.dmp
memory/2192-34-0x0000000002E10000-0x0000000002E20000-memory.dmp
memory/2192-35-0x00007FF958490000-0x00007FF958F51000-memory.dmp
memory/4444-4-0x0000000000220000-0x0000000000CFD000-memory.dmp
memory/4444-3-0x0000000000220000-0x0000000000CFD000-memory.dmp
memory/4444-2-0x0000000000220000-0x0000000000CFD000-memory.dmp
memory/4444-1-0x0000000077084000-0x0000000077086000-memory.dmp
memory/4444-25-0x0000000000220000-0x0000000000CFD000-memory.dmp
memory/4444-0-0x0000000000220000-0x0000000000CFD000-memory.dmp