Analysis

  • max time kernel
    65s
  • max time network
    37s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    02-02-2022 18:28

General

  • Target

    e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe

  • Size

    1.7MB

  • MD5

    43aa5bbf3c44b243538175bd312cd8af

  • SHA1

    ba2e14ccd5c148c7571671cc0d5f5a01049c38b9

  • SHA256

    e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948

  • SHA512

    77cae2b22bc8f9686d3dc0cfced72e4bb0ef81163e2cfc7e12ac88acc828742974677e8a303cb334a2eea7bc1797f434d0793609065b60e9bd6d1b1f449deb6e

Malware Config

Extracted

Family

vidar

Version

50

Botnet

1148

C2

https://mastodon.social/@prophef6

https://noc.social/@prophef5

Attributes
  • profile_id

    1148

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

  • Vidar Stealer 1 IoCs
  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 4 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe
    "C:\Users\Admin\AppData\Local\Temp\e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im e3e3fab86a5f23fce4ad40791aead7f2558d164a2f40124d217fb391a926c948.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1336
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:916

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

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\msvcp140.dll

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • \ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • \ProgramData\vcruntime140.dll

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • memory/1472-77-0x0000000075610000-0x000000007569F000-memory.dmp

    Filesize

    572KB

  • memory/1472-82-0x00000000747A0000-0x00000000747D8000-memory.dmp

    Filesize

    224KB

  • memory/1472-62-0x0000000074A30000-0x0000000074BC0000-memory.dmp

    Filesize

    1.6MB

  • memory/1472-63-0x0000000077010000-0x0000000077057000-memory.dmp

    Filesize

    284KB

  • memory/1472-64-0x0000000075240000-0x000000007524C000-memory.dmp

    Filesize

    48KB

  • memory/1472-65-0x0000000075280000-0x000000007539D000-memory.dmp

    Filesize

    1.1MB

  • memory/1472-66-0x0000000000260000-0x0000000000262000-memory.dmp

    Filesize

    8KB

  • memory/1472-67-0x0000000074D60000-0x0000000074D77000-memory.dmp

    Filesize

    92KB

  • memory/1472-69-0x0000000075D00000-0x0000000075D57000-memory.dmp

    Filesize

    348KB

  • memory/1472-70-0x0000000075440000-0x0000000075475000-memory.dmp

    Filesize

    212KB

  • memory/1472-71-0x0000000074980000-0x00000000749CF000-memory.dmp

    Filesize

    316KB

  • memory/1472-72-0x00000000749D0000-0x0000000074A28000-memory.dmp

    Filesize

    352KB

  • memory/1472-74-0x0000000074D80000-0x0000000074D8B000-memory.dmp

    Filesize

    44KB

  • memory/1472-76-0x0000000074940000-0x0000000074984000-memory.dmp

    Filesize

    272KB

  • memory/1472-61-0x00000000005A0000-0x00000000005E7000-memory.dmp

    Filesize

    284KB

  • memory/1472-78-0x0000000074760000-0x000000007479D000-memory.dmp

    Filesize

    244KB

  • memory/1472-79-0x0000000075100000-0x000000007512D000-memory.dmp

    Filesize

    180KB

  • memory/1472-80-0x0000000074D10000-0x0000000074D26000-memory.dmp

    Filesize

    88KB

  • memory/1472-81-0x0000000075260000-0x0000000075279000-memory.dmp

    Filesize

    100KB

  • memory/1472-60-0x0000000076D00000-0x0000000076E5C000-memory.dmp

    Filesize

    1.4MB

  • memory/1472-83-0x0000000075160000-0x00000000751A5000-memory.dmp

    Filesize

    276KB

  • memory/1472-84-0x0000000074720000-0x000000007473C000-memory.dmp

    Filesize

    112KB

  • memory/1472-85-0x00000000753A0000-0x00000000753C7000-memory.dmp

    Filesize

    156KB

  • memory/1472-86-0x0000000076CE0000-0x0000000076CF2000-memory.dmp

    Filesize

    72KB

  • memory/1472-87-0x0000000077060000-0x00000000771FD000-memory.dmp

    Filesize

    1.6MB

  • memory/1472-88-0x0000000074700000-0x0000000074715000-memory.dmp

    Filesize

    84KB

  • memory/1472-89-0x00000000746F0000-0x00000000746FE000-memory.dmp

    Filesize

    56KB

  • memory/1472-90-0x0000000074630000-0x000000007467F000-memory.dmp

    Filesize

    316KB

  • memory/1472-91-0x0000000074680000-0x00000000746D8000-memory.dmp

    Filesize

    352KB

  • memory/1472-92-0x0000000075090000-0x000000007509C000-memory.dmp

    Filesize

    48KB

  • memory/1472-58-0x0000000075A80000-0x0000000075B2C000-memory.dmp

    Filesize

    688KB

  • memory/1472-57-0x0000000000240000-0x0000000000242000-memory.dmp

    Filesize

    8KB

  • memory/1472-56-0x0000000075F91000-0x0000000075F93000-memory.dmp

    Filesize

    8KB

  • memory/1472-54-0x0000000000400000-0x0000000000597000-memory.dmp

    Filesize

    1.6MB

  • memory/1472-55-0x0000000000400000-0x0000000000597000-memory.dmp

    Filesize

    1.6MB

  • memory/1472-94-0x00000000753A0000-0x00000000753C7000-memory.dmp

    Filesize

    156KB

  • memory/1472-95-0x0000000076CE0000-0x0000000076CF2000-memory.dmp

    Filesize

    72KB

  • memory/1472-96-0x0000000077060000-0x00000000771FD000-memory.dmp

    Filesize

    1.6MB

  • memory/1472-97-0x0000000076CE0000-0x0000000076CF2000-memory.dmp

    Filesize

    72KB

  • memory/1472-98-0x0000000077060000-0x00000000771FD000-memory.dmp

    Filesize

    1.6MB