Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
08/02/2024, 02:02
General
- Target 958347e6a1c94b0b20ee65121d074ad4.exe
- Size 6.1MB
- Sample240208-cgcebscdd3
- SHA256 2315da7b94e782d98fce600182c5c2523a0422798237bf42360acd40f638936c
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 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 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 11 IoCs
Detects Themida, an advanced Windows software protection system.
- VMProtect packed file 4 IoCs
Detects executables packed with VMProtect commercial packer.
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
- 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 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
- 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 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\958347e6a1c94b0b20ee65121d074ad4.exe"C:\Users\Admin\AppData\Local\Temp\958347e6a1c94b0b20ee65121d074ad4.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
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C:\Users\Admin\AppData\Local\Temp\MAXIMUS BYPASS 1.3.EXE"C:\Users\Admin\AppData\Local\Temp\MAXIMUS BYPASS 1.3.EXE"2⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4524 -s 8603⤵
- Program crash
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-
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C:\Users\Admin\AppData\Local\Temp\DRIVER CRASH FIX.EXE"C:\Users\Admin\AppData\Local\Temp\DRIVER CRASH FIX.EXE"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4356 -s 26723⤵
- Program crash
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4524 -ip 45241⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4356 -ip 43561⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
DRIVER CRASH FIX.EXE
DRIVER CRASH FIX.EXE
DRIVER CRASH FIX.EXE
MAXIMUS BYPASS 1.3.EXE
MAXIMUS BYPASS 1.3.EXE
MAXIMUS BYPASS 1.3.EXE
memory/336-0-0x0000000000F70000-0x0000000001A19000-memory.dmp
memory/336-3-0x0000000000F70000-0x0000000001A19000-memory.dmp
memory/336-4-0x0000000000F70000-0x0000000001A19000-memory.dmp
memory/336-1-0x0000000076FB4000-0x0000000076FB6000-memory.dmp
memory/336-2-0x0000000000F70000-0x0000000001A19000-memory.dmp
memory/336-26-0x0000000000F70000-0x0000000001A19000-memory.dmp
memory/4356-39-0x0000000000B20000-0x00000000013CA000-memory.dmp
memory/4356-31-0x0000000075F40000-0x0000000076030000-memory.dmp
memory/4356-50-0x0000000000B20000-0x00000000013CA000-memory.dmp
memory/4356-38-0x0000000000B20000-0x00000000013CA000-memory.dmp
memory/4356-32-0x0000000075F40000-0x0000000076030000-memory.dmp
memory/4356-33-0x0000000075F40000-0x0000000076030000-memory.dmp
memory/4356-51-0x0000000075F40000-0x0000000076030000-memory.dmp
memory/4356-23-0x0000000000B20000-0x00000000013CA000-memory.dmp
memory/4356-45-0x00000000069C0000-0x0000000006A26000-memory.dmp
memory/4524-41-0x0000000007200000-0x0000000007292000-memory.dmp
memory/4524-40-0x00000000077B0000-0x0000000007D54000-memory.dmp
memory/4524-29-0x00000000005C0000-0x0000000000640000-memory.dmp
memory/4524-30-0x00000000731E0000-0x0000000073990000-memory.dmp
memory/4524-37-0x0000000007160000-0x00000000071FC000-memory.dmp
memory/4524-44-0x00000000731E0000-0x0000000073990000-memory.dmp