Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21/06/2022, 09:09

General

  • Target

    FDA HCM.xlsx

  • Size

    71KB

  • MD5

    f028af359cc6d711d1882ea4b08b059c

  • SHA1

    cc60b2e035fd3effde81c1b2f0fc1623204a7132

  • SHA256

    e8a557e098a05e5519447d0ad0735d7473203ba25fc83bfb67c3d03b66d7a9a2

  • SHA512

    9e87299ed846be2a129212bddc90421846e9193a33da553e2bc44afc2185dc70c9c4f29a3f972ebd7bd458f34a7416cd52c67b5c72ba12ea0454b40ebef62247

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

a2es

Decoy

glutenfreebahrain.com

sportrid.com

js-films.com

cie-revolver.com

outsourcinginstitutebd.com

roboticsdatascience.com

tebrunk.com

needgreatwork.com

df1b8j2iwbl33n.life

voluum-training.com

cherna-roza.com

xiyouap.com

bluefiftyfoundation.com

angolettomc.com

yhcp225.com

keondredejawn.com

ifeelsilky.com

coraorganizing.com

smartmindstutorials.com

tanphucuong.info

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 5 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 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 16 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1232
    • 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\FDA HCM.xlsx"
      2⤵
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1324
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\SysWOW64\netsh.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:340
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Public\vbc.exe"
        3⤵
          PID:916
        • C:\Program Files\Mozilla Firefox\Firefox.exe
          "C:\Program Files\Mozilla Firefox\Firefox.exe"
          3⤵
            PID:1712
      • 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:944
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Users\Public\vbc.exe
            "C:\Users\Public\vbc.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of AdjustPrivilegeToken
            PID:1852

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • C:\Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • C:\Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • \Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • \Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • \Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • \Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • \Users\Public\vbc.exe

              Filesize

              467KB

              MD5

              0a7ee72e2b57214272b36a91835ece31

              SHA1

              4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

              SHA256

              25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

              SHA512

              22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

            • memory/340-87-0x0000000001160000-0x000000000117B000-memory.dmp

              Filesize

              108KB

            • memory/340-88-0x00000000000C0000-0x00000000000EB000-memory.dmp

              Filesize

              172KB

            • memory/340-89-0x0000000000C40000-0x0000000000F43000-memory.dmp

              Filesize

              3.0MB

            • memory/340-90-0x0000000000470000-0x0000000000500000-memory.dmp

              Filesize

              576KB

            • memory/340-92-0x00000000000C0000-0x00000000000EB000-memory.dmp

              Filesize

              172KB

            • memory/1232-93-0x0000000006C40000-0x0000000006D4B000-memory.dmp

              Filesize

              1.0MB

            • memory/1232-91-0x0000000006C40000-0x0000000006D4B000-memory.dmp

              Filesize

              1.0MB

            • memory/1232-84-0x0000000006440000-0x0000000006572000-memory.dmp

              Filesize

              1.2MB

            • memory/1324-71-0x0000000072C3D000-0x0000000072C48000-memory.dmp

              Filesize

              44KB

            • memory/1324-58-0x0000000076011000-0x0000000076013000-memory.dmp

              Filesize

              8KB

            • memory/1324-94-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1324-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1324-57-0x0000000072C3D000-0x0000000072C48000-memory.dmp

              Filesize

              44KB

            • memory/1324-55-0x0000000071C51000-0x0000000071C53000-memory.dmp

              Filesize

              8KB

            • memory/1324-95-0x0000000072C3D000-0x0000000072C48000-memory.dmp

              Filesize

              44KB

            • memory/1324-54-0x000000002F321000-0x000000002F324000-memory.dmp

              Filesize

              12KB

            • memory/1740-72-0x0000000005140000-0x00000000051AA000-memory.dmp

              Filesize

              424KB

            • memory/1740-73-0x0000000000620000-0x0000000000652000-memory.dmp

              Filesize

              200KB

            • memory/1740-70-0x0000000000430000-0x000000000043E000-memory.dmp

              Filesize

              56KB

            • memory/1740-68-0x0000000001270000-0x00000000012EC000-memory.dmp

              Filesize

              496KB

            • memory/1852-83-0x00000000005C0000-0x00000000005D1000-memory.dmp

              Filesize

              68KB

            • memory/1852-82-0x0000000000700000-0x0000000000A03000-memory.dmp

              Filesize

              3.0MB

            • memory/1852-81-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1852-77-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1852-74-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1852-75-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB