Analysis

  • max time kernel
    207s
  • max time network
    213s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 08:17

General

  • Target

    document_00980.rtf

  • Size

    18KB

  • MD5

    aff328a66fdc5b3e1233e34ea52b5210

  • SHA1

    944592196bd7042fe76dd72af790be102106e79a

  • SHA256

    1407bcb68789cb9850c5006301431cc9d1536cf6c8e63a97eb50ba11cd724ddb

  • SHA512

    7bcc02d424de8e754aa4372ebd12cda6cd229053bf4f27ba4d9c712e41bf5ea064279677931bfb29532c43fced550cfbfd122fc4da531b34808f24e97ed82bac

  • SSDEEP

    384:J43W5XH6i1kVYAlJGusEGKVOWQn5sQwzFz6ty1JCeVhSRK6XMu6:em5XHf2VYeUusEGKVdQuVzR6U1JHhmXG

Malware Config

Extracted

Family

formbook

Campaign

dcn0

Decoy

ZVx68vDtAMBCwg==

oBMBvsNORkM/O/ox

Ff9pISWkm6eG4lByIspp

c2T42c6CIIF6B8xTxm9XzpVw

bvjhxRbnAC183w==

0lTttSNG4HUDNflyIspp

hPXFlstqiHA/O/ox

WLR+MeerxZ0cNn1ja+IQAYo=

IHRn4xXOVKi477zarG+ObSy7YJA=

Xhf3e+tdAC183w==

Xk0ZAezv2rWH

kngo+vBeSRN7AszNwam3Osmguuqc0MoC

a2Qp7a+E8fSw7LDjpnqEKjsRZA==

3zjy4E7+QM48wg==

YcCmqT3OUNAigVott2pBKiy7YJA=

4+SMeX1juat/5cZ1AZihcyy7YJA=

/+m7sro0OBTl3TMpCw==

i2ctEfe4//a64yklMsgS2J90

+loZ2QKGX0UWgpvErMs=

b9BNCnJWQJS8IfsR0uR3bCy7YJA=

Signatures

  • Formbook

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 5 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • 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 22 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\document_00980.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1516
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1196
      • C:\Windows\SysWOW64\control.exe
        "C:\Windows\SysWOW64\control.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:1092
        • C:\Program Files\Mozilla Firefox\Firefox.exe
          "C:\Program Files\Mozilla Firefox\Firefox.exe"
          3⤵
            PID:2020
      • 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:1908
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Users\Public\vbc.exe
            "C:\Users\Public\vbc.exe"
            3⤵
            • Executes dropped EXE
            PID:1000
          • C:\Users\Public\vbc.exe
            "C:\Users\Public\vbc.exe"
            3⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of AdjustPrivilegeToken
            PID:1812

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • C:\Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • C:\Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • C:\Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

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

        Filesize

        922KB

        MD5

        dda1b03a5cd2ca37c96b7daf5e3a8ed7

        SHA1

        c70e5f58e61980d39608f0795879bf012dbbbca2

        SHA256

        79f86c1edbbc69652a03a0f5667b3985bcf1e19f16fa3b8c7934e5b97ab8586d

        SHA512

        bf83648c9b5d6d65b2c8409d262a1b7421d2cb13d6c759ec5f352c2d1c5adff3ee2395250fbdfe3590f25fe96bf6b40c2d82a8e7eecaab03be2e6a398e83981f

      • \Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • \Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • \Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • \Users\Public\vbc.exe

        Filesize

        938KB

        MD5

        4cf9ee4def8a823bc5132f8f91c083d7

        SHA1

        73e85483bc4eaa7ff3f7ebfa89c48dcf23b13ce4

        SHA256

        37372679b024d50d46f5c1dbe0c0e1de65ff4b97a8e3915d229982769c891a2b

        SHA512

        1a5bdfb255d93ed6cb38e9f4cb05531a4a73d5d8a571fa610de5f51fe2682cb052055c39f1bc1006a0a650d63905b1c115de7b782fffc59793beb7ee5db23d77

      • memory/1092-96-0x0000000002080000-0x0000000002383000-memory.dmp

        Filesize

        3.0MB

      • memory/1092-97-0x00000000004B0000-0x000000000053F000-memory.dmp

        Filesize

        572KB

      • memory/1092-95-0x0000000000080000-0x00000000000AD000-memory.dmp

        Filesize

        180KB

      • memory/1092-94-0x0000000000AD0000-0x0000000000AEF000-memory.dmp

        Filesize

        124KB

      • memory/1092-92-0x0000000000000000-mapping.dmp

      • memory/1092-99-0x0000000000080000-0x00000000000AD000-memory.dmp

        Filesize

        180KB

      • memory/1196-69-0x0000000000000000-mapping.dmp

      • memory/1196-70-0x000007FEFBE41000-0x000007FEFBE43000-memory.dmp

        Filesize

        8KB

      • memory/1264-91-0x00000000067E0000-0x0000000006913000-memory.dmp

        Filesize

        1.2MB

      • memory/1264-102-0x0000000004950000-0x0000000004AA2000-memory.dmp

        Filesize

        1.3MB

      • memory/1264-101-0x000007FE9A6C0000-0x000007FE9A6CA000-memory.dmp

        Filesize

        40KB

      • memory/1264-100-0x000007FEF61E0000-0x000007FEF6323000-memory.dmp

        Filesize

        1.3MB

      • memory/1264-98-0x0000000004950000-0x0000000004AA2000-memory.dmp

        Filesize

        1.3MB

      • memory/1516-54-0x0000000072931000-0x0000000072934000-memory.dmp

        Filesize

        12KB

      • memory/1516-55-0x00000000703B1000-0x00000000703B3000-memory.dmp

        Filesize

        8KB

      • memory/1516-73-0x000000007139D000-0x00000000713A8000-memory.dmp

        Filesize

        44KB

      • memory/1516-72-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1516-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1516-57-0x0000000075F01000-0x0000000075F03000-memory.dmp

        Filesize

        8KB

      • memory/1516-58-0x000000007139D000-0x00000000713A8000-memory.dmp

        Filesize

        44KB

      • memory/1740-64-0x0000000000000000-mapping.dmp

      • memory/1740-67-0x00000000001A0000-0x0000000000290000-memory.dmp

        Filesize

        960KB

      • memory/1740-75-0x00000000051C0000-0x0000000005266000-memory.dmp

        Filesize

        664KB

      • memory/1740-76-0x0000000005580000-0x00000000055EE000-memory.dmp

        Filesize

        440KB

      • memory/1740-74-0x0000000000470000-0x000000000047C000-memory.dmp

        Filesize

        48KB

      • memory/1740-71-0x0000000000590000-0x00000000005A8000-memory.dmp

        Filesize

        96KB

      • memory/1812-87-0x0000000000401000-0x000000000042E000-memory.dmp

        Filesize

        180KB

      • memory/1812-88-0x0000000000A20000-0x0000000000D23000-memory.dmp

        Filesize

        3.0MB

      • memory/1812-86-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/1812-85-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/1812-81-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/1812-82-0x00000000004012B0-mapping.dmp

      • memory/1812-79-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/1812-78-0x0000000000400000-0x000000000042E000-memory.dmp

        Filesize

        184KB

      • memory/1812-90-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/1812-89-0x0000000000422000-0x0000000000424000-memory.dmp

        Filesize

        8KB