Analysis

  • max time kernel
    157s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    15-02-2022 06:13

General

  • Target

    c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe

  • Size

    675KB

  • MD5

    cef76d7fba522e19ac03269b6275ff3f

  • SHA1

    81cbb61d06fcd512081a5dac97a7865d98d7a22b

  • SHA256

    c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d

  • SHA512

    e4728e26ab451ec452fbb5b61fbc7efe4c7e3c138cb91ed2a4bb75a339bf2ee1cdee9f7fa0c03fb398fea3c6dd87c5075bff0095b6e55811198865550bdab33a

Score
10/10

Malware Config

Extracted

Family

vidar

Version

48.1

Botnet

937

C2

https://koyu.space/@rspich

Attributes
profile_id
937

Signatures

  • Suspicious use of NtCreateProcessExOtherParentProcess ⋅ 1 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer ⋅ 2 IoCs
  • Drops file in Windows directory ⋅ 3 IoCs
  • Program crash ⋅ 1 IoCs
  • Checks processor information in registry ⋅ 2 TTPs 5 IoCs

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

  • Enumerates system info in registry ⋅ 2 TTPs 2 IoCs
  • Modifies data under HKEY_USERS ⋅ 51 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 2 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 64 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe
    "C:\Users\Admin\AppData\Local\Temp\c7ad7dc565687b2fe2b2652ffbd135188acb4eef29c2e0d72a116bd988c1e40d.exe"
    PID:2168
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 1044
      Program crash
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: EnumeratesProcesses
      PID:828
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    Checks processor information in registry
    PID:1900
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    Drops file in Windows directory
    Modifies data under HKEY_USERS
    PID:2900
  • 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
    Drops file in Windows directory
    Suspicious use of AdjustPrivilegeToken
    PID:4072
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2168 -ip 2168
    Suspicious use of NtCreateProcessExOtherParentProcess
    Suspicious use of WriteProcessMemory
    PID:544

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • memory/2168-130-0x0000000002240000-0x00000000022BB000-memory.dmp
                        • memory/2168-131-0x00000000022C0000-0x0000000002395000-memory.dmp
                        • memory/2168-132-0x0000000000400000-0x00000000004D8000-memory.dmp