Analysis
- max time kernel
150s - max time network
148s - platform
windows10_x64 - resource
win10v20201028 - submitted
25/02/2021, 14:02
General
- Target twistercrypted.exe
- Size 206KB
- Sample210225-6nlamca26s
- SHA256 0e1ec8c0b16042cc5f4e0c137f3939aa3e4a47096b32f1c2d41baf1a0d9aa177
Malware Config
Extracted
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formbook
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http://www.sometaco.com/e3rp/
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savannahgahomedeals.com
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puertasautomaticasarequipa.com
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lakshmistiffinservice.com
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checkmategmaing.com
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yemekkilavuzum.com
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gmcworktruckatlanta.com
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travelhacker.review
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theconcordeexperience.com
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espressobeast.com
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spreadlove-thruarts.info
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ipcgsomnus.com
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hqwyqhl.icu
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whitley360insurancegroup.com
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smartwithheartbook.com
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porternotarysigningservices.com
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publiartesv.com
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moroccoplaza.com
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escola-eeg.com
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tontinepay.com
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insuranceclaimsupport.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Xloader
Xloader is a rebranded version of Formbook malware.
- Xloader Payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 1 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\twistercrypted.exe"C:\Users\Admin\AppData\Local\Temp\twistercrypted.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\o07xvq5w8.exe"C:\Users\Admin\AppData\Local\Temp\o07xvq5w8.exe" "C:\Users\Admin\AppData\Local\Temp\hd5lg3nr4zeehzp.dll" "C:\Users\Admin\AppData\Local\Temp\qceaqod.fwe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\o07xvq5w8.exe"C:\Users\Admin\AppData\Local\Temp\o07xvq5w8.exe" "C:\Users\Admin\AppData\Local\Temp\hd5lg3nr4zeehzp.dll" "C:\Users\Admin\AppData\Local\Temp\qceaqod.fwe"4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\ipconfig.exe"C:\Windows\SysWOW64\ipconfig.exe"2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\o07xvq5w8.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1528-16-0x0000000000790000-0x00000000007B9000-memory.dmp
memory/1528-15-0x0000000000CE0000-0x0000000000CEB000-memory.dmp
memory/1528-18-0x0000000002CF0000-0x0000000003010000-memory.dmp
memory/1528-20-0x0000000000C00000-0x0000000000C90000-memory.dmp
memory/2620-11-0x00000000009E0000-0x0000000000D00000-memory.dmp
memory/2620-12-0x0000000000D20000-0x0000000000D31000-memory.dmp
memory/2620-10-0x0000000000400000-0x0000000000429000-memory.dmp
memory/3048-13-0x0000000003090000-0x0000000003159000-memory.dmp
memory/3048-21-0x00000000064E0000-0x00000000065CF000-memory.dmp