Analysis
- max time kernel
152s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
14/10/2022, 17:19
General
- Target invoice.exe
- Size 779KB
- Sample221014-vvtvmsdhem
- SHA256 281c8fd39c08dffdc05bab9f5ece8952452afbc7928451fb6276d3c8013d4db6
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.
- Drops file in System32 directory 2 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 41 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- 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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\control.exe"C:\Windows\SysWOW64\control.exe"2⤵
- 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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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2084-147-0x00000000004C0000-0x00000000004E7000-memory.dmp
memory/2084-148-0x0000000000820000-0x000000000084D000-memory.dmp
memory/2084-149-0x0000000002800000-0x0000000002B4A000-memory.dmp
memory/2084-150-0x00000000025A0000-0x000000000262F000-memory.dmp
memory/2084-151-0x0000000000820000-0x000000000084D000-memory.dmp
memory/3004-153-0x0000000008B40000-0x0000000008BFB000-memory.dmp
memory/3004-152-0x0000000008B40000-0x0000000008BFB000-memory.dmp
memory/3004-145-0x00000000036A0000-0x000000000379C000-memory.dmp
memory/3232-132-0x00000000002E0000-0x00000000003AA000-memory.dmp
memory/3232-136-0x0000000004D50000-0x0000000004D5A000-memory.dmp
memory/3232-135-0x0000000004E50000-0x0000000004EEC000-memory.dmp
memory/3232-134-0x0000000004D90000-0x0000000004E22000-memory.dmp
memory/3232-133-0x0000000005400000-0x00000000059A4000-memory.dmp
memory/3696-144-0x0000000000C40000-0x0000000000C50000-memory.dmp
memory/3696-143-0x0000000001100000-0x000000000144A000-memory.dmp
memory/3696-142-0x0000000000401000-0x000000000042F000-memory.dmp
memory/3696-141-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3696-140-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3696-138-0x0000000000400000-0x000000000042F000-memory.dmp