Analysis
- max time kernel
150s - max time network
160s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
19/10/2021, 08:55
General
- Target YP20210925.exe
- Size 441KB
- Sample211019-kvg6qsfea2
- SHA256 f358d592a02990a899bc4ca7c35804529237cbffac5dcabb3e7e3916a79afbb4
Malware Config
Extracted
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formbook
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4.1
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cb2k
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http://www.freegovphoneservice.com/cb2k/
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prets-personnels-faciles-1.com
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lavandica.com
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855goldenpark.com
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ebrandschool.com
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annielaineinspirations.com
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tuscumbiadivorceattorney.com
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lovarebanwgt74.xyz
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car-plus.info
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fireloops.net
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psychtechsolutions.com
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didubreak.com
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cursodesigndesobrancelhas.com
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berrymyrick.com
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visit-croatia-now.com
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chamonix-cars.club
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1679tnpnd01uzznpvfu8795.com
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noisedelayrecovery.com
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sergiotimoteo.com
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lplc.cloud
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ppezjo.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 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 42 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 15 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\YP20210925.exe"C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UncQQycXJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp914F.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\autoconv.exe"C:\Windows\SysWOW64\autoconv.exe"2⤵
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C:\Windows\SysWOW64\raserver.exe"C:\Windows\SysWOW64\raserver.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\YP20210925.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2260-131-0x00000000014B0000-0x00000000014C4000-memory.dmp
memory/2260-130-0x00000000015E0000-0x0000000001900000-memory.dmp
memory/2260-127-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2484-122-0x0000000005830000-0x0000000005D2E000-memory.dmp
memory/2484-117-0x0000000005D30000-0x0000000005D31000-memory.dmp
memory/2484-123-0x0000000007500000-0x0000000007508000-memory.dmp
memory/2484-124-0x0000000009730000-0x0000000009731000-memory.dmp
memory/2484-125-0x00000000097D0000-0x0000000009820000-memory.dmp
memory/2484-115-0x0000000000E00000-0x0000000000E01000-memory.dmp
memory/2484-120-0x0000000005830000-0x0000000005D2E000-memory.dmp
memory/2484-119-0x0000000003260000-0x0000000003261000-memory.dmp
memory/2484-118-0x00000000056E0000-0x00000000056E1000-memory.dmp
memory/2484-121-0x0000000005830000-0x0000000005D2E000-memory.dmp
memory/3028-132-0x0000000005220000-0x0000000005331000-memory.dmp
memory/3028-139-0x0000000002BB0000-0x0000000002C54000-memory.dmp
memory/3668-134-0x0000000000190000-0x00000000001AF000-memory.dmp
memory/3668-135-0x0000000002340000-0x000000000236F000-memory.dmp
memory/3668-136-0x00000000044D0000-0x00000000047F0000-memory.dmp
memory/3668-138-0x0000000004240000-0x00000000042D3000-memory.dmp