Analysis

  • max time kernel
    151s
  • max time network
    190s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 22:18

General

  • Target

    BNK0002334789532_USD28,770.00.exe

  • Size

    637KB

  • MD5

    d7efd600d714d6d2f6b7fadc6adec0c9

  • SHA1

    ba35f96a741637af1d1319074396f1bf891f13e1

  • SHA256

    fe199e437de02d997427dfea4e864f386e12887c5ae16d2acc465417cd539521

  • SHA512

    f4e1558763fb4527ca464c7a7f8a533e4fa0d4725e97c956b83acd2ef503a056930526c6e1eeb28263d9e6bbc820be2fc110548e0ef8cd28dc003cfccfda8f18

  • SSDEEP

    12288:90zcBpbKbfzdHP/FvT9mzyK8DzVlCxlASlDAMTQu1c66XZp+:9hbbKnlJRKyKUBExjjcp

Malware Config

Extracted

Family

formbook

Campaign

uxpe

Decoy

a/CzoooH+7KLDxBh

pxq/4D9rqoY0CaqhS2ZJ3MoWxcQ=

54a97EJkYRruxKJBfg==

afibyRo7bSK3cepm9suqXQ==

2kIxy7hmdVItO11ceeC9

DsTkiAgZVGD7jykdq/ZFa8oWxcQ=

euyGFrS1t1r0xKJBfg==

ANUDttiRvXoVxcknM8L7cgli

vIWhu8Bb36VDR+udD2O2cn8=

CqdCYLyzwb5fWRlX5kY=

cis/39CB6vGMg5OqTrUoWvz177Fk

tl6GKyac14QX

HMzbyJUrUh3Ao80fOcr7cgli

7yKNGCGy57KLDxBh

hlormOKMBCD8uyrMw9QkUg==

3r/fZtwBUey8xw==

vlyJEwWudUHi2g==

214r37lXtmpLQWC0snrI5gjDdR0mPOKnDA==

YS1hgtPl0lz0xKJBfg==

3pa6XND7NgJ4Y3uxqO0nPnY=

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Blocklisted process makes network request 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 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 19 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1360
    • C:\Users\Admin\AppData\Local\Temp\BNK0002334789532_USD28,770.00.exe
      "C:\Users\Admin\AppData\Local\Temp\BNK0002334789532_USD28,770.00.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:808
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1124
        • C:\Windows\SysWOW64\cscript.exe
          "C:\Windows\SysWOW64\cscript.exe"
          4⤵
          • Blocklisted process makes network request
          • 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
          PID:1564
          • C:\Program Files\Mozilla Firefox\Firefox.exe
            "C:\Program Files\Mozilla Firefox\Firefox.exe"
            5⤵
              PID:1948

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\sqlite3.dll

      Filesize

      949KB

      MD5

      38a3e021eb32c9976adaf0b3372080fc

      SHA1

      68e02803c646be21007d90bec841c176b82211fd

      SHA256

      8cde0275d60da0d11954f73c7c8862cfc4b306f61bb8b1ce14abe4a193af2652

      SHA512

      b886cc112f2750e7300b66f7242850659fa49fdc97f75aed376cb9f5440875f303a143bf8b51068ec42674f1ebe1dfcc40534f3a7aed3cc4d20f9274b9a66d18

    • memory/808-54-0x0000000000C20000-0x0000000000CC6000-memory.dmp

      Filesize

      664KB

    • memory/808-55-0x0000000075B41000-0x0000000075B43000-memory.dmp

      Filesize

      8KB

    • memory/808-56-0x0000000000580000-0x0000000000596000-memory.dmp

      Filesize

      88KB

    • memory/808-57-0x0000000000590000-0x000000000059E000-memory.dmp

      Filesize

      56KB

    • memory/808-58-0x00000000051D0000-0x0000000005240000-memory.dmp

      Filesize

      448KB

    • memory/808-59-0x00000000040D0000-0x0000000004104000-memory.dmp

      Filesize

      208KB

    • memory/1124-71-0x0000000000422000-0x0000000000424000-memory.dmp

      Filesize

      8KB

    • memory/1124-61-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1124-64-0x00000000004012B0-mapping.dmp

    • memory/1124-67-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1124-68-0x0000000000401000-0x000000000042F000-memory.dmp

      Filesize

      184KB

    • memory/1124-69-0x0000000000A80000-0x0000000000D83000-memory.dmp

      Filesize

      3.0MB

    • memory/1124-63-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1124-78-0x0000000000401000-0x000000000042F000-memory.dmp

      Filesize

      184KB

    • memory/1124-72-0x0000000000270000-0x0000000000280000-memory.dmp

      Filesize

      64KB

    • memory/1124-73-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1124-74-0x0000000000422000-0x0000000000424000-memory.dmp

      Filesize

      8KB

    • memory/1124-75-0x00000000002B0000-0x00000000002C0000-memory.dmp

      Filesize

      64KB

    • memory/1124-60-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1124-77-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1360-70-0x0000000006D40000-0x0000000006EE6000-memory.dmp

      Filesize

      1.6MB

    • memory/1360-84-0x0000000007300000-0x000000000747C000-memory.dmp

      Filesize

      1.5MB

    • memory/1360-87-0x0000000007300000-0x000000000747C000-memory.dmp

      Filesize

      1.5MB

    • memory/1360-76-0x0000000006830000-0x0000000006961000-memory.dmp

      Filesize

      1.2MB

    • memory/1564-79-0x0000000000000000-mapping.dmp

    • memory/1564-80-0x00000000004C0000-0x00000000004E2000-memory.dmp

      Filesize

      136KB

    • memory/1564-81-0x0000000000070000-0x000000000009D000-memory.dmp

      Filesize

      180KB

    • memory/1564-82-0x0000000001FE0000-0x00000000022E3000-memory.dmp

      Filesize

      3.0MB

    • memory/1564-83-0x0000000001D10000-0x0000000001D9F000-memory.dmp

      Filesize

      572KB

    • memory/1564-85-0x0000000000070000-0x000000000009D000-memory.dmp

      Filesize

      180KB