Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    15-12-2021 09:37

General

  • Target

    PO26910193.js

  • Size

    715KB

  • MD5

    471845f89fdc0d48bbbc4eef5513d5e2

  • SHA1

    e25a0ca1425e8bfcc8516e0e85ecaf8b5d99ecf2

  • SHA256

    1103cc349deb9d738448ee8ba8f4189af39984f3e92a9adf1bafcda1d45bd652

  • SHA512

    2605e7db46bd4e3435c3710ad2ab443525d9b94ead16a6fdb73756d8a9afba2c5a4792e2d625503b2ae19c944cb7c1e441f2b5dc9328573ea0a47ddfe0698ec6

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

pzi0

C2

http://www.buffstaff.com/pzi0/

Decoy

laylmodest.com

woruke.club

metaverseslots.net

syscogent.net

aluxxenterprise.com

lm-solar.com

lightempirestore.com

witcheboutique.com

hometech-bosch.xyz

expert-netcad.com

poteconomist.com

mycousinsfriend.biz

shineveranda.com

collegedictionary.cloud

zqlidexx.com

businessesopportunity.com

2utalahs4.com

participatetn.info

dare2ownit.com

varser.com

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • 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 3 IoCs
  • Blocklisted process makes network request 18 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1412
    • C:\Windows\system32\wscript.exe
      wscript.exe C:\Users\Admin\AppData\Local\Temp\PO26910193.js
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1724
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\lPObwAVZjm.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Adds Run key to start application
        PID:668
      • C:\Users\Admin\AppData\Local\Temp\wealth.exe
        "C:\Users\Admin\AppData\Local\Temp\wealth.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1372
    • C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1072
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\wealth.exe"
        3⤵
          PID:1972

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\wealth.exe
      MD5

      83481bf872730cd133669c5ea5b1be2b

      SHA1

      fbd2369965b20f6bee09063aa454de13a18c71d3

      SHA256

      5d174dd08492f307e4b367e262f3e96b9beefb99f5abb11043ddf7142a18e9e8

      SHA512

      9080dc9bcdfba87ff3ecb3ba04af7a03dea2228f093fbb91149ff8825694601908ba85b2ce27a1de47ce1f6e263b03d96d80d43b7a4033051fbbac64fde7dc51

    • C:\Users\Admin\AppData\Local\Temp\wealth.exe
      MD5

      83481bf872730cd133669c5ea5b1be2b

      SHA1

      fbd2369965b20f6bee09063aa454de13a18c71d3

      SHA256

      5d174dd08492f307e4b367e262f3e96b9beefb99f5abb11043ddf7142a18e9e8

      SHA512

      9080dc9bcdfba87ff3ecb3ba04af7a03dea2228f093fbb91149ff8825694601908ba85b2ce27a1de47ce1f6e263b03d96d80d43b7a4033051fbbac64fde7dc51

    • C:\Users\Admin\AppData\Roaming\lPObwAVZjm.js
      MD5

      cc4c347aa8b598d1187c6ac8220b645d

      SHA1

      9075dc46990744f92756bcf86493a1a85b45db97

      SHA256

      b27ceeed7816086caa5d310dbf342d345d2a9367ee1455d2ccf19196f4c2fe6b

      SHA512

      e9ae8851374c67c725f8a16ad2461497da793f56c73fff1bf89e1d4f3e3d48a110e01018d963aba843fd256c9cc9ab2950323b3ea93df422dbd20d348603cd03

    • memory/668-54-0x0000000000000000-mapping.dmp
    • memory/1072-65-0x0000000000480000-0x000000000049C000-memory.dmp
      Filesize

      112KB

    • memory/1072-61-0x0000000000000000-mapping.dmp
    • memory/1072-62-0x0000000076491000-0x0000000076493000-memory.dmp
      Filesize

      8KB

    • memory/1072-66-0x0000000000080000-0x00000000000A9000-memory.dmp
      Filesize

      164KB

    • memory/1072-67-0x0000000001FB0000-0x00000000022B3000-memory.dmp
      Filesize

      3.0MB

    • memory/1072-68-0x0000000000530000-0x00000000005C0000-memory.dmp
      Filesize

      576KB

    • memory/1372-59-0x0000000000280000-0x0000000000291000-memory.dmp
      Filesize

      68KB

    • memory/1372-58-0x0000000000B80000-0x0000000000E83000-memory.dmp
      Filesize

      3.0MB

    • memory/1372-56-0x0000000000000000-mapping.dmp
    • memory/1412-60-0x0000000007100000-0x00000000072A4000-memory.dmp
      Filesize

      1.6MB

    • memory/1412-69-0x0000000004940000-0x00000000049F1000-memory.dmp
      Filesize

      708KB

    • memory/1972-64-0x0000000000000000-mapping.dmp