Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16/06/2022, 09:42

General

  • Target

    PI.exe

  • Size

    696KB

  • MD5

    ef9ddc4ebd697d61db488c560d2115e9

  • SHA1

    a60fa983cf0a54caa2001f86bac961bba4e4ecc6

  • SHA256

    ce60e4de64afb14f5f5db72f72dcb978930c13b743f093bc8562468c7680d9ee

  • SHA512

    c2564963ca294f5b6ccccc9ae1ae7c325cc981d0b225345b6aab72e1bb100f96606a46fab18f488d3d8eac98a814960c61f3d64986e9a422d3e2c7d6f7667aa9

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

k59h

Decoy

5Jmm72a3503V

N0yBoUCYUTRLfak=

211XjgQWec5Yk5Qo6SgqZGwU

1mxV5ax97shdmbA=

StuJphyppWyplnyrgD58/HNwVc4=

O2q6/rr5gcviVU/h

ataW27/QPlPRgNMvtQ==

ut6GGNcWyhBDDDQ1Db4=

93Rc7LJ6gUek2lG3djp7wg==

8wdHfz6ABUqJsUVbyLDW3Z08hA==

7nAdOLREOQFLfrv8ae4st8yEG1gjpCJs

HD53nVq5W+8zKjeAnUDT

udw2urI9JTRLfak=

eeyly1z1Ko4FGA==

VWym0IGvHmXECZ+AnUDT

Oez2q42RI520scgnuVUxpmA=

bZM6QYi3503V

kkZvoEkVm+eTBw==

HDJld+XLDUGV0YXCdjp7wg==

gW7mk4AU31LHCZ+AnUDT

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
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PI.exe
    "C:\Users\Admin\AppData\Local\Temp\PI.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\PI.exe
      "C:\Users\Admin\AppData\Local\Temp\PI.exe"
      2⤵
        PID:1324
      • C:\Users\Admin\AppData\Local\Temp\PI.exe
        "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        2⤵
          PID:1164
        • C:\Users\Admin\AppData\Local\Temp\PI.exe
          "C:\Users\Admin\AppData\Local\Temp\PI.exe"
          2⤵
            PID:1256
          • C:\Users\Admin\AppData\Local\Temp\PI.exe
            "C:\Users\Admin\AppData\Local\Temp\PI.exe"
            2⤵
            • Checks computer location settings
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of AdjustPrivilegeToken
            PID:1264
        • C:\Windows\Explorer.EXE
          C:\Windows\Explorer.EXE
          1⤵
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:1212
          • C:\Windows\SysWOW64\wininit.exe
            "C:\Windows\SysWOW64\wininit.exe"
            2⤵
            • Adds policy 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:364
            • C:\Windows\SysWOW64\cmd.exe
              /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
              3⤵
              • Deletes itself
              PID:664
            • C:\Program Files\Mozilla Firefox\Firefox.exe
              "C:\Program Files\Mozilla Firefox\Firefox.exe"
              3⤵
                PID:1276

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/364-76-0x0000000000080000-0x00000000000AC000-memory.dmp

                  Filesize

                  176KB

                • memory/364-74-0x0000000000990000-0x0000000000A20000-memory.dmp

                  Filesize

                  576KB

                • memory/364-73-0x0000000001FD0000-0x00000000022D3000-memory.dmp

                  Filesize

                  3.0MB

                • memory/364-72-0x0000000000080000-0x00000000000AC000-memory.dmp

                  Filesize

                  176KB

                • memory/364-71-0x0000000000A20000-0x0000000000A3A000-memory.dmp

                  Filesize

                  104KB

                • memory/1212-68-0x0000000004A60000-0x0000000004BD7000-memory.dmp

                  Filesize

                  1.5MB

                • memory/1212-78-0x0000000004BE0000-0x0000000004D5D000-memory.dmp

                  Filesize

                  1.5MB

                • memory/1212-75-0x0000000004BE0000-0x0000000004D5D000-memory.dmp

                  Filesize

                  1.5MB

                • memory/1264-59-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/1264-67-0x0000000000250000-0x0000000000261000-memory.dmp

                  Filesize

                  68KB

                • memory/1264-66-0x00000000009E0000-0x0000000000CE3000-memory.dmp

                  Filesize

                  3.0MB

                • memory/1264-65-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/1264-62-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/1264-60-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/1672-54-0x00000000000F0000-0x00000000001A4000-memory.dmp

                  Filesize

                  720KB

                • memory/1672-58-0x0000000005C20000-0x0000000005C8C000-memory.dmp

                  Filesize

                  432KB

                • memory/1672-57-0x0000000005B80000-0x0000000005C22000-memory.dmp

                  Filesize

                  648KB

                • memory/1672-56-0x0000000000540000-0x000000000054A000-memory.dmp

                  Filesize

                  40KB

                • memory/1672-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

                  Filesize

                  8KB