Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    26-09-2021 13:32

General

  • Target

    def4055093a8c99192cfd87e5dc5ead65ade8b59782aa7cd0044ef9fad8eb496.exe

  • Size

    1.5MB

  • MD5

    fa0fc4e438328d168f869cf58bbd671f

  • SHA1

    6f4f2a7b8e5c8cb7e01c81cfa80c400cfc1c8210

  • SHA256

    def4055093a8c99192cfd87e5dc5ead65ade8b59782aa7cd0044ef9fad8eb496

  • SHA512

    be5cee43ad9a624c51b8e45d27f0c5ad4007dc1f2a7aa38792ab913898fe305150bc5578454ded9a98b9ec2cafa0ec23eae08b396cbf4cc8483d1f2687837298

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Program crash 13 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\def4055093a8c99192cfd87e5dc5ead65ade8b59782aa7cd0044ef9fad8eb496.exe
    "C:\Users\Admin\AppData\Local\Temp\def4055093a8c99192cfd87e5dc5ead65ade8b59782aa7cd0044ef9fad8eb496.exe"
    1⤵
    • Loads dropped DLL
    PID:2372
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 948
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2904
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1056
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3780
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1068
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2192
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1504
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2288
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1724
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1644
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1632
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1860
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1496
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:604
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1492
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1256
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1456
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1476
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1516
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1700
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1300
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1780
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:2924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 1676
      2⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:804

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Collection

Data from Local System

2
T1005

Replay Monitor

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Downloads

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/2372-115-0x0000000000810000-0x0000000000811000-memory.dmp
    Filesize

    4KB

  • memory/2372-116-0x0000000002A60000-0x0000000002B7B000-memory.dmp
    Filesize

    1.1MB

  • memory/2372-117-0x0000000000400000-0x000000000057E000-memory.dmp
    Filesize

    1.5MB