Analysis
- max time kernel
151s - max time network
148s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
15/10/2021, 18:19
General
- Target Nuevo Pago 15.10.2021.exe
- Size 247KB
- Sample211015-wx64esbcc3
- SHA256 12fa6c4f9dc345eca587fe606caf9a5eccfcdc5456b2617ec17b1b1f1e06d24a
Malware Config
Extracted
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xloader
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2.5
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u9xn
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http://www.crisisinterventionadvocates.com/u9xn/
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lifeguardingcoursenearme.com
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bolsaspapelcdmx.com
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parsleypkllqu.xyz
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68134.online
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shopthatlookboutique.com
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canlibahisportal.com
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oligopoly.city
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srchwithus.online
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151motors.com
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17yue.info
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auntmarysnj.com
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hanansalman.com
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heyunshangcheng.info
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doorslamersplus.com
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sfcn-dng.com
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highvizpeople.com
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seoexpertinbangladesh.com
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christinegagnonjewellery.com
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artifactorie.biz
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mre3.net
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 3 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 2 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Drops file in Program Files directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- NSIS installer 4 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 58 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Nuevo Pago 15.10.2021.exe"C:\Users\Admin\AppData\Local\Temp\Nuevo Pago 15.10.2021.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Nuevo Pago 15.10.2021.exe"C:\Users\Admin\AppData\Local\Temp\Nuevo Pago 15.10.2021.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmstp.exe"C:\Windows\SysWOW64\cmstp.exe"2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- 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\Nuevo Pago 15.10.2021.exe"3⤵
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵
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C:\Program Files (x86)\Bp6h\evnhj7njpftb.exe"C:\Program Files (x86)\Bp6h\evnhj7njpftb.exe"2⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/920-127-0x0000000000F70000-0x0000000001000000-memory.dmp
memory/920-125-0x0000000000610000-0x0000000000639000-memory.dmp
memory/920-124-0x0000000001240000-0x0000000001256000-memory.dmp
memory/920-126-0x0000000004660000-0x0000000004980000-memory.dmp
memory/3024-128-0x0000000002450000-0x0000000002529000-memory.dmp
memory/3024-121-0x0000000005D00000-0x0000000005E35000-memory.dmp
memory/4032-119-0x0000000000A90000-0x0000000000DB0000-memory.dmp
memory/4032-120-0x00000000004C0000-0x000000000060A000-memory.dmp
memory/4032-116-0x0000000000400000-0x0000000000429000-memory.dmp