Analysis
- max time kernel
151s - max time network
143s - platform
windows7_x64 - resource
win7v20210408 - submitted
16/04/2021, 12:58
General
- Target PO# PO_009237-1 pdf.exe
- Size 1.1MB
- Sample210416-ythvwm5kh6
- SHA256 a64fb325fa611518c20644dfbe5728eb7767caeb63df08c4935dec5fc4ffe988
Malware Config
Extracted
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formbook
-
4.1
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http://w����5 �@q[*��S=���m
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 IoCs
- Deletes itself 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.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO# PO_009237-1 pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO# PO_009237-1 pdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UTxFVFzlvAW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA5F.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\PO# PO_009237-1 pdf.exe"C:\Users\Admin\AppData\Local\Temp\PO# PO_009237-1 pdf.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wlanext.exe"C:\Windows\SysWOW64\wlanext.exe"2⤵
- Suspicious use of SetThreadContext
- 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\PO# PO_009237-1 pdf.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/344-61-0x0000000000AC0000-0x0000000000AC1000-memory.dmp
memory/344-62-0x0000000000AC1000-0x0000000000AC2000-memory.dmp
memory/344-60-0x0000000075211000-0x0000000075213000-memory.dmp
memory/1136-73-0x0000000000AA0000-0x0000000000AB6000-memory.dmp
memory/1136-74-0x00000000000E0000-0x000000000010E000-memory.dmp
memory/1136-75-0x0000000002050000-0x0000000002353000-memory.dmp
memory/1136-76-0x0000000001F60000-0x0000000001FF3000-memory.dmp
memory/1180-70-0x0000000004DF0000-0x0000000004F8E000-memory.dmp
memory/1180-77-0x0000000007420000-0x00000000075A2000-memory.dmp
memory/1672-65-0x0000000000400000-0x000000000042E000-memory.dmp
memory/1672-68-0x0000000000ED0000-0x00000000011D3000-memory.dmp
memory/1672-69-0x0000000000160000-0x0000000000174000-memory.dmp