Analysis

  • max time kernel
    81s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    15-10-2021 10:02

General

  • Target

    0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe

  • Size

    724KB

  • MD5

    d803cf7b3353802118337aa32c6d03f3

  • SHA1

    c28f295139b4ad7a292dc55cbb9ab1807a98e924

  • SHA256

    0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7

  • SHA512

    4c760a7fba97569245707f1dda0d6d7baac1f3ace29ac666991a7002757a26dd336f344d1e797d74c52ff3145387ff07e13f1ef70dee4e15a88da1bfa1f067b6

Malware Config

Extracted

Family

vidar

Version

41.3

Botnet

1008

C2

https://mas.to/@oleg98

Attributes
profile_id
1008

Signatures 15

  • 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
  • Accesses cryptocurrency files/wallets, possible credential harvesting ⋅ 2 TTPs
  • Checks installed software on the system ⋅ 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices ⋅ 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry ⋅ 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe ⋅ 1 IoCs
  • Kills process with taskkill ⋅ 1 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 8 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 9 IoCs

Processes 4

  • C:\Users\Admin\AppData\Local\Temp\0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe
    "C:\Users\Admin\AppData\Local\Temp\0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe"
    Loads dropped DLL
    Checks processor information in registry
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe" & del C:\ProgramData\*.dll & exit
      Suspicious use of WriteProcessMemory
      PID:1356
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 0c6b949623ff2665ed436d580b0f438a33eb5de97310a3e1644bfe02f25ce8b7.exe /f
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        PID:948
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        Delays execution with timeout.exe
        PID:3452

Network

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Defense Evasion

      Execution

        Exfiltration

          Impact

            Initial Access

              Lateral Movement

                Persistence

                  Privilege Escalation

                    Replay Monitor

                    00:00 00:00

                    Downloads

                    • C:\ProgramData\freebl3.dll
                      MD5

                      ef2834ac4ee7d6724f255beaf527e635

                      SHA1

                      5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

                      SHA256

                      a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

                      SHA512

                      c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

                    • C:\ProgramData\mozglue.dll
                      MD5

                      8f73c08a9660691143661bf7332c3c27

                      SHA1

                      37fa65dd737c50fda710fdbde89e51374d0c204a

                      SHA256

                      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

                      SHA512

                      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

                    • C:\ProgramData\msvcp140.dll
                      MD5

                      109f0f02fd37c84bfc7508d4227d7ed5

                      SHA1

                      ef7420141bb15ac334d3964082361a460bfdb975

                      SHA256

                      334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

                      SHA512

                      46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

                    • C:\ProgramData\nss3.dll
                      MD5

                      bfac4e3c5908856ba17d41edcd455a51

                      SHA1

                      8eec7e888767aa9e4cca8ff246eb2aacb9170428

                      SHA256

                      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

                      SHA512

                      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

                    • C:\ProgramData\softokn3.dll
                      MD5

                      a2ee53de9167bf0d6c019303b7ca84e5

                      SHA1

                      2a3c737fa1157e8483815e98b666408a18c0db42

                      SHA256

                      43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

                      SHA512

                      45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

                    • C:\ProgramData\vcruntime140.dll
                      MD5

                      7587bf9cb4147022cd5681b015183046

                      SHA1

                      f2106306a8f6f0da5afb7fc765cfa0757ad5a628

                      SHA256

                      c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

                      SHA512

                      0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

                    • \ProgramData\mozglue.dll
                      MD5

                      8f73c08a9660691143661bf7332c3c27

                      SHA1

                      37fa65dd737c50fda710fdbde89e51374d0c204a

                      SHA256

                      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

                      SHA512

                      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

                    • \ProgramData\nss3.dll
                      MD5

                      bfac4e3c5908856ba17d41edcd455a51

                      SHA1

                      8eec7e888767aa9e4cca8ff246eb2aacb9170428

                      SHA256

                      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

                      SHA512

                      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

                    • memory/948-121-0x0000000000000000-mapping.dmp
                    • memory/1356-120-0x0000000000000000-mapping.dmp
                    • memory/1892-115-0x00000000018E9000-0x0000000001965000-memory.dmp
                    • memory/1892-116-0x0000000003370000-0x0000000003446000-memory.dmp
                    • memory/1892-117-0x0000000000400000-0x0000000001728000-memory.dmp
                    • memory/3452-122-0x0000000000000000-mapping.dmp