Resubmissions

21-10-2021 12:22

211021-pj5j4sacd5 10

21-10-2021 12:15

211021-pew26sacc7 10

Analysis

  • max time kernel
    300s
  • max time network
    300s
  • platform
    windows7_x64
  • resource
    win7-ja-20211014
  • submitted
    21-10-2021 12:22

General

  • Target

    triage_dropped_file.exe

  • Size

    253KB

  • MD5

    d0e4c13e6c8ba9fe34d86b554b595d9a

  • SHA1

    83eee2dbe00ae265af9eb13105dc1068b6b034cd

  • SHA256

    f8d9fbcef6907460baa7c91e53d1a40865901bb50906b5519cba440fdbc65032

  • SHA512

    72f5fcd367c0f0fdc83827bea529f84a85ace28550a5cd8102cb0cde2829d81defe312fb0d95d3c5a8e8728f4efd8cb433bfab0b3e1f265fffdc4e0ad687247d

Score
10/10

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

kqna

C2

http://www.surfsolutions.info/kqna/

Decoy

achyutlifesciences.com

anthemmg.com

netkopat.com

generationgirlnaturals.com

novatel-network.com

craftstockco.com

thevishantiverse.art

elkerfly.com

haerotechs.com

candypalette.com

gregdokes.com

e-commerce.company

gratitudeland.com

companyintelcloud.com

publicyazilim.com

xc6811.com

aracsozluk.com

janesgalant.quest

fraserstephendop.com

ryan.rentals

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Xloader Payload 4 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 59 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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 AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
      "C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1088
      • C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
        "C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:788
    • C:\Windows\SysWOW64\NETSTAT.EXE
      "C:\Windows\SysWOW64\NETSTAT.EXE"
      2⤵
      • Suspicious use of SetThreadContext
      • Gathers network information
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1240
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
        3⤵
        • Deletes itself
        PID:2000
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {4A86F13A-C0C0-4008-92F3-EE2E9A6B84CA} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
      PID:952

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Command-Line Interface

    1
    T1059

    Discovery

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nsy4E6F.tmp\oirygpbyia.dll
      MD5

      6d2a0ca8aac6594e4f037d3cecdace3b

      SHA1

      2fdc815752d2483ae536ed60dd2104b0e5cc2abd

      SHA256

      f7a3aa43e037f6b25c8070b3aaac9f0c5037abb1c4d01afd30a6f52f7c44f468

      SHA512

      cacc25100aedd926141416ef443dd40f03cb6b1512129bd707fc8ece1c9db2ad9a1de559e8cb3d29b569e2b1b843822f4ef681c4ea33bc5a6a290a3f17bdb7ee

    • memory/788-64-0x0000000000750000-0x0000000000761000-memory.dmp
      Filesize

      68KB

    • memory/788-63-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/788-58-0x000000000041D400-mapping.dmp
    • memory/788-61-0x00000000003E0000-0x00000000003F1000-memory.dmp
      Filesize

      68KB

    • memory/788-60-0x0000000000770000-0x0000000000A73000-memory.dmp
      Filesize

      3.0MB

    • memory/788-57-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/1088-55-0x0000000075981000-0x0000000075983000-memory.dmp
      Filesize

      8KB

    • memory/1240-67-0x00000000007A0000-0x00000000007A9000-memory.dmp
      Filesize

      36KB

    • memory/1240-66-0x0000000000000000-mapping.dmp
    • memory/1240-68-0x00000000000E0000-0x0000000000109000-memory.dmp
      Filesize

      164KB

    • memory/1240-70-0x00000000022C0000-0x00000000025C3000-memory.dmp
      Filesize

      3.0MB

    • memory/1240-71-0x00000000007B0000-0x0000000000840000-memory.dmp
      Filesize

      576KB

    • memory/1244-62-0x0000000006ED0000-0x0000000007034000-memory.dmp
      Filesize

      1.4MB

    • memory/1244-65-0x0000000007040000-0x00000000071CC000-memory.dmp
      Filesize

      1.5MB

    • memory/1244-72-0x0000000003C90000-0x0000000003D57000-memory.dmp
      Filesize

      796KB

    • memory/2000-69-0x0000000000000000-mapping.dmp