Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
16/10/2022, 03:28
General
- Target invoice.exe
- Size 942KB
- Sample221016-d1b4cagfap
- SHA256 80315ef282c51636b3a9e174de8482d1bab51e044cba0b2cb915d7e48a551b64
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.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates system info in registry 2 TTPs 1 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 53 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 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 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 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\chkdsk.exe"C:\Windows\SysWOW64\chkdsk.exe"2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- 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
memory/392-153-0x0000000000B40000-0x0000000000B6D000-memory.dmp
memory/392-151-0x0000000001380000-0x000000000140F000-memory.dmp
memory/392-149-0x00000000014A0000-0x00000000017EA000-memory.dmp
memory/392-148-0x0000000000B40000-0x0000000000B6D000-memory.dmp
memory/392-147-0x0000000000A40000-0x0000000000A4A000-memory.dmp
memory/3092-145-0x00000000081D0000-0x000000000831A000-memory.dmp
memory/3092-154-0x0000000007DE0000-0x0000000007EAD000-memory.dmp
memory/3092-152-0x0000000007DE0000-0x0000000007EAD000-memory.dmp
memory/3092-150-0x00000000081D0000-0x000000000831A000-memory.dmp
memory/4704-143-0x00000000015E0000-0x000000000192A000-memory.dmp
memory/4704-144-0x0000000001090000-0x00000000010A0000-memory.dmp
memory/4704-142-0x0000000000401000-0x000000000042F000-memory.dmp
memory/4704-141-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4704-140-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4704-138-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4964-132-0x00000000001B0000-0x00000000002A2000-memory.dmp
memory/4964-136-0x0000000002760000-0x000000000276A000-memory.dmp
memory/4964-135-0x0000000004DF0000-0x0000000004E8C000-memory.dmp
memory/4964-134-0x0000000004D50000-0x0000000004DE2000-memory.dmp
memory/4964-133-0x0000000005260000-0x0000000005804000-memory.dmp