Analysis
- max time kernel
148s - max time network
151s - platform
windows10_x64 - resource
win10v20210408 - submitted
11/09/2021, 15:55
General
- Target Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
- Size 814KB
- Sample210911-tcsdesefaj
- SHA256 4d80ab79360b092bb5d8fa41d14388dffe5ef42839b6dbbf741f0ce5c3424d1e
Malware Config
Extracted
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formbook
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4.1
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3nop
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http://www.jakesplacebarbers.com/3nop/
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videohm.com
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panache-rose.com
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alnooncars-kw.com
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trueblue2u.com
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brussels-cafe.com
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ip2c.net
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influenzerr.com
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rbcoq.com
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zzful.com
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drainthe.com
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sumaholesson.com
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cursosaprovados.com
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genotecinc.com
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dbrulhart.com
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theapiarystudios.com
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kensyu-kan.com
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dkku88.com
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tikhyper.com
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aztecnort.com
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homebrim.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 3 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 54 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of FindShellTrayWindow 8 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\secinit.exeC:\Windows\System32\secinit.exe3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\ipconfig.exe"C:\Windows\SysWOW64\ipconfig.exe"2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- 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:\Windows\SysWOW64\secinit.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/808-114-0x0000000000600000-0x0000000000601000-memory.dmp
memory/2616-120-0x0000000010410000-0x000000001043E000-memory.dmp
memory/2616-119-0x0000000001220000-0x0000000001221000-memory.dmp
memory/2616-121-0x0000000005190000-0x00000000054B0000-memory.dmp
memory/2616-122-0x00000000050F0000-0x0000000005104000-memory.dmp
memory/2912-125-0x0000000000B70000-0x0000000000B7B000-memory.dmp
memory/2912-126-0x0000000002FA0000-0x0000000002FCE000-memory.dmp
memory/2912-128-0x0000000003790000-0x0000000003AB0000-memory.dmp
memory/2912-129-0x00000000034F0000-0x0000000003583000-memory.dmp
memory/3056-123-0x00000000057D0000-0x0000000005943000-memory.dmp
memory/3056-130-0x0000000003290000-0x000000000333C000-memory.dmp