Analysis

  • max time kernel
    154s
  • max time network
    145s
  • 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

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • 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 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 14 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PI.exe
    "C:\Users\Admin\AppData\Local\Temp\PI.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4000
    • 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:3032
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\SysWOW64\wscript.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:4272
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
          PID:1808
        • 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:1904
          • 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:392
            • C:\Program Files\Mozilla Firefox\Firefox.exe
              "C:\Program Files\Mozilla Firefox\Firefox.exe"
              3⤵
                PID:4056

          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/1064-141-0x00000000071C0000-0x00000000072FC000-memory.dmp

                  Filesize

                  1.2MB

                • memory/1064-152-0x0000000002710000-0x00000000027F6000-memory.dmp

                  Filesize

                  920KB

                • memory/1064-151-0x0000000002710000-0x00000000027F6000-memory.dmp

                  Filesize

                  920KB

                • memory/1064-148-0x00000000071C0000-0x00000000072FC000-memory.dmp

                  Filesize

                  1.2MB

                • memory/3032-143-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/3032-138-0x0000000001810000-0x0000000001B5A000-memory.dmp

                  Filesize

                  3.3MB

                • memory/3032-140-0x0000000001B60000-0x0000000001B71000-memory.dmp

                  Filesize

                  68KB

                • memory/3032-137-0x0000000000400000-0x000000000042C000-memory.dmp

                  Filesize

                  176KB

                • memory/4000-131-0x0000000005710000-0x0000000005CB4000-memory.dmp

                  Filesize

                  5.6MB

                • memory/4000-130-0x0000000000740000-0x00000000007F4000-memory.dmp

                  Filesize

                  720KB

                • memory/4000-132-0x0000000005200000-0x0000000005292000-memory.dmp

                  Filesize

                  584KB

                • memory/4000-133-0x0000000005350000-0x00000000053FA000-memory.dmp

                  Filesize

                  680KB

                • memory/4000-134-0x0000000005700000-0x000000000570A000-memory.dmp

                  Filesize

                  40KB

                • memory/4000-135-0x0000000000FE0000-0x000000000107C000-memory.dmp

                  Filesize

                  624KB

                • memory/4272-145-0x0000000000F80000-0x0000000000FA7000-memory.dmp

                  Filesize

                  156KB

                • memory/4272-150-0x00000000032D0000-0x0000000003360000-memory.dmp

                  Filesize

                  576KB

                • memory/4272-149-0x0000000001390000-0x00000000013BC000-memory.dmp

                  Filesize

                  176KB

                • memory/4272-147-0x00000000033B0000-0x00000000036FA000-memory.dmp

                  Filesize

                  3.3MB

                • memory/4272-146-0x0000000001390000-0x00000000013BC000-memory.dmp

                  Filesize

                  176KB