Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 04:53

General

  • Target

    17a8ec56dafaad109906330a0ccef3dbb3592fbf21c33cc26255a154fe3976f7.xls

  • Size

    813KB

  • MD5

    b5c98554695c6d71e28bf2ed1a10098a

  • SHA1

    40d789b940747f88f40cdd0cbc891486cd0868ec

  • SHA256

    17a8ec56dafaad109906330a0ccef3dbb3592fbf21c33cc26255a154fe3976f7

  • SHA512

    3817d96e370d28d92d2ba05ab50cfed03c8afbb357c670964c190273e1f3fe09aac053ff1913ec8f51fe868e153f9b53ed471c74200b0d7a6ef83da6a7d1947e

  • SSDEEP

    24576:bL8r5XXXXXXXXXXXXUXXXXXXXSXXXXXXXX9mZr5XXXXXXXXXXXXUXXXXXXXSXXXr:DSW

Malware Config

Extracted

Family

formbook

Campaign

pgnt

Decoy

0WG18LbM4lR9iqMRa4nlBzTb

jcfGYzPgZTqFZVO9FV2yIw==

laIfrdSC8/4CNg==

Q73ilev5GIWuOrAAFV2yIw==

Q2u/pMw7pv4sPA==

TbqvIUHwlQscPo0HFV2yIw==

8PNWfGPyE8n0IQ==

WtgROxXzvY2L

PryaRBNjm4eP

Y9Hdi06Cry1um9Sj68YAu1o=

3Gulyp7CMQtR78jvLkk=

JJ3GasTVTCRQT6Tfz6S6GlI=

RnS42bhb9tI0R6UpD6wOxriNxw==

he1mi2sOGfzTRGHnuA==

eaYjCtjxVjdU5XLRtBMBLKk9quA=

k9rTeEqYzzw8WaTfz6S6GlI=

5luVQwe2vJWKEAiMdF4=

MGW14L9OVk5Y5TaR6w/DqdhYxXVY

mAsYz6k6sQkDC0/DoHj9t1RPWLSgFQ==

y5klhuMbE8n0IQ==

Extracted

Family

xloader

Version

3.�E

Campaign

pgnt

Decoy

0WG18LbM4lR9iqMRa4nlBzTb

jcfGYzPgZTqFZVO9FV2yIw==

laIfrdSC8/4CNg==

Q73ilev5GIWuOrAAFV2yIw==

Q2u/pMw7pv4sPA==

TbqvIUHwlQscPo0HFV2yIw==

8PNWfGPyE8n0IQ==

WtgROxXzvY2L

PryaRBNjm4eP

Y9Hdi06Cry1um9Sj68YAu1o=

3Gulyp7CMQtR78jvLkk=

JJ3GasTVTCRQT6Tfz6S6GlI=

RnS42bhb9tI0R6UpD6wOxriNxw==

he1mi2sOGfzTRGHnuA==

eaYjCtjxVjdU5XLRtBMBLKk9quA=

k9rTeEqYzzw8WaTfz6S6GlI=

5luVQwe2vJWKEAiMdF4=

MGW14L9OVk5Y5TaR6w/DqdhYxXVY

mAsYz6k6sQkDC0/DoHj9t1RPWLSgFQ==

y5klhuMbE8n0IQ==

Signatures

  • Formbook

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

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1200
    • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\17a8ec56dafaad109906330a0ccef3dbb3592fbf21c33cc26255a154fe3976f7.xls
      2⤵
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1292
    • C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.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
      PID:1660
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:1632
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Users\Public\vbc.exe
        "C:\Users\Public\vbc.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1800
        • 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
          PID:1952

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Public\vbc.exe

      Filesize

      268KB

      MD5

      f3feaf8d347c650922694576101d334a

      SHA1

      e0c79d30068226d24e0459a2ed1df000cce3da51

      SHA256

      c374702b64ce7be870353ea15567fe8a8065c207565c0892d2549a26d7c885e2

      SHA512

      2adce41f1953385cf34655e7c0a51406e3773b89f83bd9226ea485765e29115c0578b34daa6c47b721aadbc56a5f227af3f9efc38c2fe25ff7c58d1c8196bec6

    • C:\Users\Public\vbc.exe

      Filesize

      268KB

      MD5

      f3feaf8d347c650922694576101d334a

      SHA1

      e0c79d30068226d24e0459a2ed1df000cce3da51

      SHA256

      c374702b64ce7be870353ea15567fe8a8065c207565c0892d2549a26d7c885e2

      SHA512

      2adce41f1953385cf34655e7c0a51406e3773b89f83bd9226ea485765e29115c0578b34daa6c47b721aadbc56a5f227af3f9efc38c2fe25ff7c58d1c8196bec6

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

      Filesize

      770KB

      MD5

      65f6090dfb069aca962a59f6df9e6113

      SHA1

      879bad504dfcce1a591c97817f3ff1e63931cfd2

      SHA256

      32a302d8c235226d8cdda4d957f151df3e5736fdce7886e6c794f0648b2eb106

      SHA512

      4c0e5e1103749356dceaaaa312e853bda83ec14f2f12288e9020cdf42b6e80d4caaec03d1ef7f34d81ddf2da88e6160c0c711380c2a7d89012e660406cdbb987

    • \Users\Public\vbc.exe

      Filesize

      268KB

      MD5

      f3feaf8d347c650922694576101d334a

      SHA1

      e0c79d30068226d24e0459a2ed1df000cce3da51

      SHA256

      c374702b64ce7be870353ea15567fe8a8065c207565c0892d2549a26d7c885e2

      SHA512

      2adce41f1953385cf34655e7c0a51406e3773b89f83bd9226ea485765e29115c0578b34daa6c47b721aadbc56a5f227af3f9efc38c2fe25ff7c58d1c8196bec6

    • memory/1200-87-0x0000000003BA0000-0x0000000003C36000-memory.dmp

      Filesize

      600KB

    • memory/1200-79-0x0000000004D70000-0x0000000004EEC000-memory.dmp

      Filesize

      1.5MB

    • memory/1200-90-0x0000000003BA0000-0x0000000003C36000-memory.dmp

      Filesize

      600KB

    • memory/1292-57-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

      Filesize

      44KB

    • memory/1292-92-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

      Filesize

      44KB

    • memory/1292-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1292-58-0x00000000762E1000-0x00000000762E3000-memory.dmp

      Filesize

      8KB

    • memory/1292-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1292-55-0x0000000071AB1000-0x0000000071AB3000-memory.dmp

      Filesize

      8KB

    • memory/1292-54-0x000000002F9A1000-0x000000002F9A4000-memory.dmp

      Filesize

      12KB

    • memory/1292-80-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

      Filesize

      44KB

    • memory/1660-81-0x0000000000000000-mapping.dmp

    • memory/1660-83-0x0000000000080000-0x000000000009C000-memory.dmp

      Filesize

      112KB

    • memory/1660-88-0x00000000000E0000-0x000000000010D000-memory.dmp

      Filesize

      180KB

    • memory/1660-86-0x0000000001CD0000-0x0000000001D5F000-memory.dmp

      Filesize

      572KB

    • memory/1660-85-0x0000000001DD0000-0x00000000020D3000-memory.dmp

      Filesize

      3.0MB

    • memory/1660-84-0x00000000000E0000-0x000000000010D000-memory.dmp

      Filesize

      180KB

    • memory/1800-61-0x0000000000000000-mapping.dmp

    • memory/1800-64-0x0000000000FF0000-0x0000000001038000-memory.dmp

      Filesize

      288KB

    • memory/1800-65-0x0000000000540000-0x0000000000546000-memory.dmp

      Filesize

      24KB

    • memory/1800-66-0x0000000000550000-0x000000000055A000-memory.dmp

      Filesize

      40KB

    • memory/1952-77-0x0000000000422000-0x0000000000424000-memory.dmp

      Filesize

      8KB

    • memory/1952-68-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1952-70-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1952-71-0x00000000004012B0-mapping.dmp

    • memory/1952-67-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1952-78-0x0000000000110000-0x0000000000120000-memory.dmp

      Filesize

      64KB

    • memory/1952-73-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/1952-76-0x0000000000840000-0x0000000000B43000-memory.dmp

      Filesize

      3.0MB

    • memory/1952-75-0x0000000000401000-0x000000000042F000-memory.dmp

      Filesize

      184KB

    • memory/1952-74-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB