Analysis
- max time kernel
66s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
18/09/2022, 16:16
General
- Target 4987a7297078ad273f19351af8f535e9.exe
- Size 450KB
- Sample220918-tqs7wafdbm
- SHA256 12935ca1073fff08eb4fbd5d4cd1707b0fce7dd92a2106cac5af92de0451ffaf
Malware Config
Signatures
- ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 3 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses 2FA software files, possible credential harvesting 2 TTPs
- 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.
- Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Drops file in Program Files directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\4987a7297078ad273f19351af8f535e9.exe"C:\Users\Admin\AppData\Local\Temp\4987a7297078ad273f19351af8f535e9.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" 5.253.18.213/c taskkill /im 4987a7297078ad273f19351af8f535e9.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4987a7297078ad273f19351af8f535e9.exe" & del C:\PrograData\*.dll & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im 4987a7297078ad273f19351af8f535e9.exe /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\timeout.exetimeout /t 63⤵
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3912 -s 19922⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3912 -ip 39121⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
symsrv.dll
mozglue.dll
nss3.dll
memory/3912-137-0x0000000003760000-0x00000000037A9000-memory.dmp
memory/3912-138-0x0000000000400000-0x0000000000803000-memory.dmp
memory/3912-139-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3912-136-0x0000000003660000-0x0000000003760000-memory.dmp
memory/3912-134-0x0000000000400000-0x0000000000803000-memory.dmp
memory/3912-159-0x0000000010000000-0x0000000010030000-memory.dmp
memory/3912-160-0x0000000000400000-0x0000000000803000-memory.dmp
memory/3912-163-0x0000000010000000-0x0000000010030000-memory.dmp
memory/3912-133-0x0000000010000000-0x0000000010030000-memory.dmp
memory/3912-165-0x0000000000400000-0x0000000000803000-memory.dmp