Analysis
- max time kernel
159s - max time network
175s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
- submitted
13/10/2022, 16:18
General
- Target ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe
- Size 945KB
- Sample221013-tryhzschak
- SHA256 a942ff27c44b844b9b4b6c77a43fc5d454c009c8dc649cd381ca7d3a9e23792b
Malware Config
Extracted
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formbook
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5pdf
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ImkB41yxewa+HeQyPpDm
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cLnVt4DNZCL7QEV5KG7giA==
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OIEUzLUFkDn8y4abGEtC4yglSTX4
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EqHHULn+zpNozLr4ibEAuwM=
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evmLCwphcPbQTMEOmOyOivz3oA==
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itXoy64T3qaBgfZMZ4hP7x4=
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11lkKSydVQazaCfB
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rjVa6Vuxhm7o0DaMVKRiAEG548hjbXUh
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A5LGUb4V4HhTGw5J2kbJWt+1TcZ/lwk=
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Z/IjCQhZrlVCQyl3LzzkkQ==
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6S3Gn/1WV9DAuTpo8FyBEyDvpw==
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RZOeKrIJoj4kjlSGfuE/3ZSf
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Roivd82k8rJ8
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fwWrgboRZx7FLOUyPpDm
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aOsu9kWm5IZ+Mforn+g=
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q/+gMjuW2IJrbFCKBUzDT+Y7zBw=
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Za7YfdYb33L3lELL
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PX2kfQd1toOMfCutdLEAuwM=
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qUFE/vlKjo1rXujioun6vQA=
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xyUrsDOTXhbIrl7ejrEAuwM=
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.
- Loads dropped DLL 1 IoCs
- Suspicious use of SetThreadContext 4 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.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 8 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of WriteProcessMemory 28 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gefoYh.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gefoYh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFDA.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"3⤵
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C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.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\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
- Loads dropped DLL
- 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
tmpFDA.tmp
sqlite3.dll
memory/956-63-0x0000000004880000-0x00000000048B4000-memory.dmp
memory/956-58-0x0000000005C70000-0x0000000005D00000-memory.dmp
memory/956-57-0x0000000000490000-0x000000000049C000-memory.dmp
memory/956-56-0x0000000000470000-0x0000000000488000-memory.dmp
memory/956-54-0x00000000001B0000-0x00000000002A2000-memory.dmp
memory/956-55-0x00000000760E1000-0x00000000760E3000-memory.dmp
memory/1144-77-0x000000006E7E0000-0x000000006ED8B000-memory.dmp
memory/1144-71-0x000000006E7E0000-0x000000006ED8B000-memory.dmp
memory/1304-92-0x0000000006960000-0x0000000006A6A000-memory.dmp
memory/1304-90-0x0000000006960000-0x0000000006A6A000-memory.dmp
memory/1304-80-0x0000000006B60000-0x0000000006CFE000-memory.dmp
memory/1304-76-0x0000000004F70000-0x000000000502A000-memory.dmp
memory/1568-72-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1568-84-0x0000000000401000-0x000000000042F000-memory.dmp
memory/1568-75-0x00000000000A0000-0x00000000000B0000-memory.dmp
memory/1568-73-0x0000000000401000-0x000000000042F000-memory.dmp
memory/1568-70-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1568-79-0x0000000000190000-0x00000000001A0000-memory.dmp
memory/1568-64-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1568-82-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1568-74-0x0000000000AE0000-0x0000000000DE3000-memory.dmp
memory/1568-65-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1568-67-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1972-87-0x00000000000C0000-0x00000000000ED000-memory.dmp
memory/1972-88-0x00000000022D0000-0x00000000025D3000-memory.dmp
memory/1972-89-0x00000000021F0000-0x000000000227F000-memory.dmp
memory/1972-86-0x0000000000240000-0x00000000004C1000-memory.dmp
memory/1972-91-0x00000000000C0000-0x00000000000ED000-memory.dmp
memory/1972-85-0x0000000074C41000-0x0000000074C43000-memory.dmp