Overview

overview

10

Static

static

TW0091.xlsx

windows7_x64

10

TW0091.xlsx

windows10-2004_x64

4

Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    11-02-2022 18:02

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    TW0091.xlsx

  • Size

    187KB

  • MD5

    41521b74c54998dcd1460d444b07c5f1

  • SHA1

    29dcf07f9964a0c2a36defa2935441f559fe7cd2

  • SHA256

    91cf449506a9c3ade639027f6a38e99ee22d9cc7c2a1c4bc42fc8047185b8918

  • SHA512

    8841ddad3690fb1c1436331b03ac26a356f0ff32ab5df923770da4af94785ee5d73cf0f68367cdb2bd3c31922f8be8726004e737753b11c9b32959f71155466d

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 8 IoCs
  • 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 use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 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\TW0091.xlsx"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:1740
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3448
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1836

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

Loading Replay Monitor...

Downloads

  • memory/1740-136-0x00007FFEA21F0000-0x00007FFEA21F1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1740-130-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-132-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-133-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-134-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-135-0x00007FFEA21ED000-0x00007FFEA21EE000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1740-131-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-143-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-140-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-142-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1740-141-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3448-138-0x000001C64B620000-0x000001C64B630000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3448-139-0x000001C64DD10000-0x000001C64DD14000-memory.dmp
    Filesize

    16KB

    Download
  • memory/3448-137-0x000001C64AF90000-0x000001C64AFA0000-memory.dmp
    Filesize

    64KB

    Download