Analysis
- max time kernel
149s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
12/12/2022, 10:57
General
- Target ET3B30WFvUox72P.exe
- Size 853KB
- Sample221212-m19jaabb66
- SHA256 e121e41abc24cd4a27ec0537679a24a0c8ab76bacbb4e7d636fff4b775a89cbd
Malware Config
Extracted
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formbook
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bmr1
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q05YNsJC4MpYLGAf4A==
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6KUzKCvwX0fwzrFQXvlucw==
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KA4ZibW1w+hWN5Q=
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TfgNq18tIWtsM7h+DexncQ==
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zspNqjUKBdJVHTkiMMXJYeF7G53bVvMPoA==
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hopQr+b8KzPIbMWvw0Yxir6cyw==
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2thmt+17FR/MVsakbM/+w3xGOhopJw==
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5gO5gfA6jwna/4FNSPqrvvHyr2A=
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kqtr0wr9KaOXVMyDDexncQ==
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PNldyz0Boa5cLGAf4A==
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Gysor7fqabd0UzTwWp3Zir6cyw==
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pMRgV18gtLorB21prX4=
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ukpf+vu2u+hWN5Q=
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pcS/rO+KmPMj69G9cMHnoSEm59cbIQ==
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4fWGzv347bFNDYJeeIHKG5co
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WXlRyM2Yn+4Ab1EgRAFHWdGDCzf1
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ZPoM+2U1cwMzteOBsHY=
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o8jQoNron4sT3A/KomE=
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7QX8tTpv/A+YKw==
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wFvmV8SY/A+YKw==
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 3 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 46 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ET3B30WFvUox72P.exe"C:\Users\Admin\AppData\Local\Temp\ET3B30WFvUox72P.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ET3B30WFvUox72P.exe"C:\Users\Admin\AppData\Local\Temp\ET3B30WFvUox72P.exe"3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/800-132-0x0000000000C10000-0x0000000000CEC000-memory.dmp
memory/800-133-0x0000000005D10000-0x00000000062B4000-memory.dmp
memory/800-134-0x0000000005760000-0x00000000057F2000-memory.dmp
memory/800-135-0x00000000056B0000-0x00000000056BA000-memory.dmp
memory/800-136-0x0000000006680000-0x000000000671C000-memory.dmp
memory/2532-144-0x00000000013F0000-0x0000000001400000-memory.dmp
memory/2532-148-0x0000000000401000-0x000000000042F000-memory.dmp
memory/2532-140-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2532-141-0x0000000000401000-0x000000000042F000-memory.dmp
memory/2532-143-0x00000000016C0000-0x0000000001A0A000-memory.dmp
memory/2532-138-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2532-147-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3060-145-0x0000000008070000-0x00000000081E5000-memory.dmp
memory/3060-153-0x00000000026D0000-0x00000000027A9000-memory.dmp
memory/3060-155-0x00000000026D0000-0x00000000027A9000-memory.dmp
memory/4276-149-0x0000000000A50000-0x0000000000A64000-memory.dmp
memory/4276-151-0x0000000002890000-0x0000000002BDA000-memory.dmp
memory/4276-150-0x0000000000860000-0x000000000088D000-memory.dmp
memory/4276-152-0x0000000002630000-0x00000000026BF000-memory.dmp
memory/4276-154-0x0000000000860000-0x000000000088D000-memory.dmp