Analysis
- max time kernel
4294208s - max time network
143s - platform
windows7_x64 - resource
win7-20220223-en - submitted
08/03/2022, 07:50
General
- Target IRQ2107799_pdf.exe
- Size 434KB
- Sample220308-jpdexsffel
- SHA256 c657108efc3f78a3052d15e5f2e8593181566f45c2c3e3316437bf7d6632095c
Malware Config
Extracted
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formbook
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4.1
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s1m4
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fritzimmo.com
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seerefugee.com
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f2ymj6ud.xyz
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benchessell.com
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annplumb.com
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malpha.online
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thebengalsking.com
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ulctuscaloosa.church
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fotosenrutas.com
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lavishyummyinvite.quest
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indielanguagelearner.net
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tibbattipula.com
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sugarbabycones.com
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dxwzh.com
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brownsfinancialllc.com
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63838.xyz
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esscentsbyjhai.com
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therunningdoula.com
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63693.xyz
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ccchildrenscoalition.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- Formbook Payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 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.
- Suspicious behavior: EnumeratesProcesses 30 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 19 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\IRQ2107799_pdf.exe"C:\Users\Admin\AppData\Local\Temp\IRQ2107799_pdf.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\xzzepj.exeC:\Users\Admin\AppData\Local\Temp\xzzepj.exe C:\Users\Admin\AppData\Local\Temp\tqcey3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\xzzepj.exeC:\Users\Admin\AppData\Local\Temp\xzzepj.exe C:\Users\Admin\AppData\Local\Temp\tqcey4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\mstsc.exe"C:\Windows\SysWOW64\mstsc.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\xzzepj.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/560-65-0x000000000041F000-0x0000000000420000-memory.dmp
memory/560-64-0x0000000000850000-0x0000000000B53000-memory.dmp
memory/560-61-0x0000000000400000-0x000000000042F000-memory.dmp
memory/560-66-0x0000000000210000-0x0000000000224000-memory.dmp
memory/580-70-0x00000000000C0000-0x00000000000EF000-memory.dmp
memory/580-69-0x0000000000EB0000-0x0000000000FB4000-memory.dmp
memory/580-71-0x00000000023C0000-0x00000000026C3000-memory.dmp
memory/580-72-0x0000000000A00000-0x0000000000A93000-memory.dmp
memory/1196-67-0x0000000004B00000-0x0000000004C26000-memory.dmp
memory/1196-73-0x0000000004F50000-0x0000000005028000-memory.dmp
memory/1252-54-0x00000000762A1000-0x00000000762A3000-memory.dmp