Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21/06/2022, 09:08

General

  • Target

    Purchase Order Sheet.xlsx

  • Size

    168KB

  • MD5

    939b429a57287162bc41f316f44eb30f

  • SHA1

    d847f7c19c0f05eaa78c01c7f3ce870542f126ec

  • SHA256

    db8c0ba2cb25a5ed15cdc6c5e58cffcdc276acea0036813db8824aad1ae5ca22

  • SHA512

    41a0025cec34032ab697f64774674fe50004d92268cbd75f0fdd237141d56bca0281c2485905b26ddcbe223afafef35f99bf7e083fe308f31545880dcdf6375e

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

ip4t

Decoy

710wgm.com

ournewhorizon.com

hilfe-online.xyz

suryaciptanusantara.com

hfrdwy.com

solutionscollection.com

savor.menu

fxivcama.com

freedom-recruitment.com

owldit.com

fullbiz.online

ztgifts.com

zerlastreeservices.com

simpleenergyai.com

ostheide-immobilien.com

mike-piano.com

xiheps.com

usedcarindonesia-ace.com

yuncuiyunying.xyz

hopecrtprotour.com

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 6 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 4 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 15 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 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:1284
    • 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\Purchase Order Sheet.xlsx"
      2⤵
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:316
    • C:\Windows\SysWOW64\cmmon32.exe
      "C:\Windows\SysWOW64\cmmon32.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:928
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Public\vbc.exe"
        3⤵
          PID:1292
        • C:\Program Files\Mozilla Firefox\Firefox.exe
          "C:\Program Files\Mozilla Firefox\Firefox.exe"
          3⤵
            PID:1672
      • 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:1204
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2012
          • 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:520

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • C:\Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • C:\Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • \Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • \Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • \Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • \Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • \Users\Public\vbc.exe

              Filesize

              668KB

              MD5

              d558a014b63621911fea88739bd4d442

              SHA1

              770267f47a9330db866ab28f10abab1fde94e625

              SHA256

              dc1325117fde7f750e5c4a2fcaa09560b63760da668d899ad9dcf9e414e85fbf

              SHA512

              cbfdf8a9422366faee5e546d9b02baf330f583c1684580b912ddbbfaff028bc6147c92db0ec9598a85bf48400a78288036ce7cb5564f82bd5769a457aadca2ef

            • memory/316-58-0x0000000076431000-0x0000000076433000-memory.dmp

              Filesize

              8KB

            • memory/316-57-0x00000000722FD000-0x0000000072308000-memory.dmp

              Filesize

              44KB

            • memory/316-99-0x00000000722FD000-0x0000000072308000-memory.dmp

              Filesize

              44KB

            • memory/316-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/316-55-0x0000000071311000-0x0000000071313000-memory.dmp

              Filesize

              8KB

            • memory/316-98-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/316-54-0x000000002F3E1000-0x000000002F3E4000-memory.dmp

              Filesize

              12KB

            • memory/316-71-0x00000000722FD000-0x0000000072308000-memory.dmp

              Filesize

              44KB

            • memory/520-89-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/520-83-0x0000000000170000-0x0000000000181000-memory.dmp

              Filesize

              68KB

            • memory/520-74-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/520-75-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/520-77-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/520-86-0x00000000002C0000-0x00000000002D1000-memory.dmp

              Filesize

              68KB

            • memory/520-81-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/520-82-0x0000000000A30000-0x0000000000D33000-memory.dmp

              Filesize

              3.0MB

            • memory/928-94-0x0000000000780000-0x0000000000810000-memory.dmp

              Filesize

              576KB

            • memory/928-96-0x00000000000D0000-0x00000000000FB000-memory.dmp

              Filesize

              172KB

            • memory/928-93-0x0000000001F40000-0x0000000002243000-memory.dmp

              Filesize

              3.0MB

            • memory/928-92-0x00000000000D0000-0x00000000000FB000-memory.dmp

              Filesize

              172KB

            • memory/928-91-0x0000000000810000-0x000000000081D000-memory.dmp

              Filesize

              52KB

            • memory/1284-87-0x0000000006DF0000-0x0000000006F19000-memory.dmp

              Filesize

              1.2MB

            • memory/1284-84-0x0000000006360000-0x000000000648E000-memory.dmp

              Filesize

              1.2MB

            • memory/1284-95-0x00000000077A0000-0x0000000007907000-memory.dmp

              Filesize

              1.4MB

            • memory/1284-97-0x00000000077A0000-0x0000000007907000-memory.dmp

              Filesize

              1.4MB

            • memory/2012-70-0x0000000000940000-0x000000000094E000-memory.dmp

              Filesize

              56KB

            • memory/2012-73-0x0000000002020000-0x0000000002084000-memory.dmp

              Filesize

              400KB

            • memory/2012-72-0x0000000005390000-0x000000000542A000-memory.dmp

              Filesize

              616KB

            • memory/2012-68-0x0000000000980000-0x0000000000A2E000-memory.dmp

              Filesize

              696KB