Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-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)

  • suricata: ET MALWARE FormBook CnC Checkin (POST) M2

    suricata: ET MALWARE FormBook CnC Checkin (POST) M2

  • Xloader Payload 4 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 46 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2684
    • C:\Users\Admin\AppData\Local\Temp\PI.exe
      "C:\Users\Admin\AppData\Local\Temp\PI.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4900
      • C:\Users\Admin\AppData\Local\Temp\PI.exe
        "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
          PID:2192
        • C:\Users\Admin\AppData\Local\Temp\PI.exe
          "C:\Users\Admin\AppData\Local\Temp\PI.exe"
          3⤵
            PID:2688
          • C:\Users\Admin\AppData\Local\Temp\PI.exe
            "C:\Users\Admin\AppData\Local\Temp\PI.exe"
            3⤵
              PID:3704
            • C:\Users\Admin\AppData\Local\Temp\PI.exe
              "C:\Users\Admin\AppData\Local\Temp\PI.exe"
              3⤵
              • Checks computer location settings
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              PID:704
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\SysWOW64\cmd.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
            • System policy modification
            PID:4580
            • C:\Windows\SysWOW64\cmd.exe
              /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
              3⤵
                PID:4496
              • C:\Windows\SysWOW64\cmd.exe
                /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
                3⤵
                  PID:2848
                • C:\Windows\SysWOW64\cmd.exe
                  /c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
                  3⤵
                    PID:1412
                  • C:\Program Files\Mozilla Firefox\Firefox.exe
                    "C:\Program Files\Mozilla Firefox\Firefox.exe"
                    3⤵
                      PID:3424

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\DB1

                        Filesize

                        40KB

                        MD5

                        b608d407fc15adea97c26936bc6f03f6

                        SHA1

                        953e7420801c76393902c0d6bb56148947e41571

                        SHA256

                        b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

                        SHA512

                        cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

                      • C:\Users\Admin\AppData\Local\Temp\DB1

                        Filesize

                        48KB

                        MD5

                        349e6eb110e34a08924d92f6b334801d

                        SHA1

                        bdfb289daff51890cc71697b6322aa4b35ec9169

                        SHA256

                        c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

                        SHA512

                        2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

                      • memory/704-143-0x0000000001490000-0x00000000014A1000-memory.dmp

                        Filesize

                        68KB

                      • memory/704-146-0x0000000000400000-0x000000000042C000-memory.dmp

                        Filesize

                        176KB

                      • memory/704-140-0x0000000000400000-0x000000000042C000-memory.dmp

                        Filesize

                        176KB

                      • memory/704-142-0x00000000019D0000-0x0000000001D1A000-memory.dmp

                        Filesize

                        3.3MB

                      • memory/2684-154-0x00000000082A0000-0x00000000083E9000-memory.dmp

                        Filesize

                        1.3MB

                      • memory/2684-152-0x00000000082A0000-0x00000000083E9000-memory.dmp

                        Filesize

                        1.3MB

                      • memory/2684-144-0x0000000002C10000-0x0000000002CE0000-memory.dmp

                        Filesize

                        832KB

                      • memory/4580-150-0x0000000000FC0000-0x0000000000FEC000-memory.dmp

                        Filesize

                        176KB

                      • memory/4580-148-0x0000000000A80000-0x0000000000ADA000-memory.dmp

                        Filesize

                        360KB

                      • memory/4580-149-0x0000000001C20000-0x0000000001F6A000-memory.dmp

                        Filesize

                        3.3MB

                      • memory/4580-151-0x0000000001A40000-0x0000000001AD0000-memory.dmp

                        Filesize

                        576KB

                      • memory/4580-153-0x0000000000FC0000-0x0000000000FEC000-memory.dmp

                        Filesize

                        176KB

                      • memory/4900-130-0x00000000003B0000-0x0000000000464000-memory.dmp

                        Filesize

                        720KB

                      • memory/4900-135-0x0000000007D60000-0x0000000007DFC000-memory.dmp

                        Filesize

                        624KB

                      • memory/4900-134-0x0000000005050000-0x000000000505A000-memory.dmp

                        Filesize

                        40KB

                      • memory/4900-133-0x0000000004F60000-0x000000000500A000-memory.dmp

                        Filesize

                        680KB

                      • memory/4900-132-0x0000000004E10000-0x0000000004EA2000-memory.dmp

                        Filesize

                        584KB

                      • memory/4900-131-0x00000000052E0000-0x0000000005884000-memory.dmp

                        Filesize

                        5.6MB