Analysis
- max time kernel
146s - max time network
148s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
18/10/2022, 04:18
General
- Target invoice.exe
- Size 611KB
- Sample221018-ewybfseffl
- SHA256 03877e2ca8962961d8cf797402da2bccb8fc6afe876cfa4e327ef29363a9b4ba
Malware Config
Extracted
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formbook
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dj6o
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eHTcR+KSbIHKrEJYcaqomJrw
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d4CQy4B84xPiXuPwHUtF
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8eIkbHEq+BPxberwHUtF
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m0+kGJZPG1H1jgngcA==
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AMbXEsJxX4/J80MD
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cxBd6axquGelQQc=
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J9URjF0q/TbJ80MD
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HxxYujs6bp7dberwHUtF
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VhwjWCuW1Xau
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Hs4ZrXYwBycFVX7hJpekXd1oRg==
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XyAqZOXgWECQBQ==
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H+HaBrNXMlQ5j+GkDTwf7dEalRSG8g==
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Kvj6PwPvL2f1jgngcA==
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q3F0mzHxjbyi
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G/sniBrf1waZ08/yTxyN8qLm
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9uD0ZBYgb5ZiuP3wHUtF
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Ndkqiyj14RhyZziD6WwV4O8=
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PuY9wEs6hMAOTUs2mUCtdjzUeRyb+A==
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PwsHXAKokKjJ80MD
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xa4YnG9AI0WKthDfFO0=
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 3 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 17 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"C:\Users\Admin\AppData\Local\Temp\invoice.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"{path}"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\mstsc.exe"C:\Windows\SysWOW64\mstsc.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
sqlite3.dll
memory/852-68-0x0000000000850000-0x0000000000B53000-memory.dmp
memory/852-65-0x0000000000400000-0x000000000042F000-memory.dmp
memory/852-69-0x0000000000080000-0x0000000000090000-memory.dmp
memory/852-59-0x0000000000400000-0x000000000042F000-memory.dmp
memory/852-60-0x0000000000400000-0x000000000042F000-memory.dmp
memory/852-62-0x0000000000400000-0x000000000042F000-memory.dmp
memory/852-66-0x0000000000400000-0x000000000042F000-memory.dmp
memory/852-67-0x0000000000401000-0x000000000042F000-memory.dmp
memory/1376-77-0x0000000006C90000-0x0000000006DDD000-memory.dmp
memory/1376-70-0x0000000004A50000-0x0000000004B07000-memory.dmp
memory/1376-79-0x0000000006C90000-0x0000000006DDD000-memory.dmp
memory/1660-56-0x0000000000390000-0x00000000003B0000-memory.dmp
memory/1660-58-0x0000000000A60000-0x0000000000A94000-memory.dmp
memory/1660-57-0x0000000004C30000-0x0000000004CBC000-memory.dmp
memory/1660-54-0x0000000000FA0000-0x000000000103E000-memory.dmp
memory/1660-55-0x0000000075FB1000-0x0000000075FB3000-memory.dmp
memory/2000-76-0x0000000001F00000-0x0000000001F8F000-memory.dmp
memory/2000-73-0x00000000007A0000-0x00000000008A4000-memory.dmp
memory/2000-75-0x0000000002110000-0x0000000002413000-memory.dmp
memory/2000-78-0x00000000000C0000-0x00000000000ED000-memory.dmp
memory/2000-74-0x00000000000C0000-0x00000000000ED000-memory.dmp