Analysis

  • max time kernel
    40s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-01-2023 21:29

General

  • Target

    16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe

  • Size

    292KB

  • MD5

    4e820624a50df38378d06063608a50a9

  • SHA1

    33d46f4b8430e08f3e74f2cb0c14dd876c92e5c1

  • SHA256

    16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e

  • SHA512

    f71cfd3c19bf591effa56c38243f19dd2649dc2305328dfe2b2a971e2a4165a174b5a78cf8cfebf98393e7d18b1066356b7158bc8f10b55d267db8e5e7d33bbd

  • SSDEEP

    6144:iloykaNXjYQUDA79GTulOSdAeGr1eIu97mL6K9GIM62:i1kaNTaDA5OkWeP9C+K9GIM62

Malware Config

Extracted

Family

oski

C2

timecforgoodnes.ml

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
    "C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
      "C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe"
      2⤵
        PID:1108
      • C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
        "C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1112
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 836
          3⤵
          • Program crash
          PID:976

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/976-72-0x0000000000000000-mapping.dmp
    • memory/1112-64-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-67-0x000000000040717B-mapping.dmp
    • memory/1112-57-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-58-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-60-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-73-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-62-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-71-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-66-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-69-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1112-70-0x00000000768A1000-0x00000000768A3000-memory.dmp
      Filesize

      8KB

    • memory/1460-56-0x00000000004F0000-0x00000000004FA000-memory.dmp
      Filesize

      40KB

    • memory/1460-55-0x00000000004C0000-0x00000000004C6000-memory.dmp
      Filesize

      24KB

    • memory/1460-54-0x00000000001B0000-0x0000000000204000-memory.dmp
      Filesize

      336KB