Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 02:48

General

  • Target

    Excess_nls.scr

  • Size

    247KB

  • MD5

    7435510d618cc836b23a1bb1791b67b2

  • SHA1

    1428f359a72436dc70e288963d6fb04387e94bd4

  • SHA256

    28b8e4f41d9f11d19a188dc903d3a8d37a643d5e3d61b260ddc01a4fd475b91d

  • SHA512

    5ccc5f49c7752d5367b4e7e4a858ac462e06a7eed7231b8dd96c8c441290e99e71fda3eaffec808656e7a3030c9cf476fc144a102a4ef373d7f184d40fdcfd7b

  • SSDEEP

    6144:bloZM+rIkd8g+EtXHkv/iD46UsziAfboMxUyzzqG2b8e1mWuFeiQfWsy:5oZtL+EP86UsziAfboMxUyzzq9futQf

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Excess_nls.scr
    "C:\Users\Admin\AppData\Local\Temp\Excess_nls.scr" /S
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2948

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/2264-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

    Filesize

    4KB

  • memory/2264-1-0x0000000000D50000-0x0000000000D94000-memory.dmp

    Filesize

    272KB

  • memory/2264-2-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2264-3-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB