Analysis

  • max time kernel
    150s
  • max time network
    182s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    30-07-2021 15:26

General

  • Target

    83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe

  • Size

    708KB

  • MD5

    b2a93feb45e2d76bdfc83c623a14d5bf

  • SHA1

    f39c5e92adb9ba4602d8973cc286ab265f11d137

  • SHA256

    83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3

  • SHA512

    db93fcade10ff3b4291d6337acdb9a675e178154d98c1feb5f5c63e814edd08a37cfcab0140a6e0b84e5013127a93c8c4c4249c5d669a148fb0caf65575c66a5

Malware Config

Extracted

Family

vidar

Version

39.7

Botnet

517

C2

https://shpak125.tumblr.com/

Attributes
  • profile_id

    517

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
  • Vidar Stealer 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Modifies file permissions 1 TTPs 1 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 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
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
    "C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
      "C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b46544cb-1721-4c10-9f1b-6501dc4a3d75" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:540
      • C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
        "C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1600
        • C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
          "C:\Users\Admin\AppData\Local\Temp\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1124
          • C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
            "C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1300
            • C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
              "C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1740
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe" & del C:\ProgramData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1556
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:452
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1400
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {EF2636DA-2E7B-4604-BE1B-3AF3965780C7} S-1-5-21-2455352368-1077083310-2879168483-1000:QWOCTUPM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:592
    • C:\Users\Admin\AppData\Local\b46544cb-1721-4c10-9f1b-6501dc4a3d75\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
      C:\Users\Admin\AppData\Local\b46544cb-1721-4c10-9f1b-6501dc4a3d75\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe --Task
      2⤵
      • Executes dropped EXE
      PID:1072

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

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

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    MD5

    38b33d357b48f05e2e68d4f8a1db047a

    SHA1

    8ce535f29afb1fa588d7152fcc59f35cefc987ba

    SHA256

    74e458267a323f8bd03a94b9e476f734f925907f1d331d5faaec13dfaddd561e

    SHA512

    e92bb39c16f71a3a42457e917cbf80cf1ec04e34b14c63b5650d3d485556cbb371c81053e263ac5aaa531c7705ab375c92d85f98a9a8cff173c01905bed1ce3f

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    MD5

    2902de11e30dcc620b184e3bb0f0c1cb

    SHA1

    5d11d14a2558801a2688dc2d6dfad39ac294f222

    SHA256

    e6a7f1f8810e46a736e80ee5ac6187690f28f4d5d35d130d410e20084b2c1544

    SHA512

    efd415cde25b827ac2a7ca4d6486ce3a43cdcc1c31d3a94fd7944681aa3e83a4966625bf2e6770581c4b59d05e35ff9318d9adaddade9070f131076892af2fa0

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    MD5

    5ff584af05cab237078a6630a50548fe

    SHA1

    de58d2ed9b44cd4fd89c45ea7136d0faf86a7d63

    SHA256

    a9d0645039bc6644e1f83f69c4d78cc3a9a3a55615921a0c44a8c5abd3404eac

    SHA512

    07c3dc4a07fd68ae982cffec18a8aa7ffc708b832aada915c653398aba8f61c212c64e971afa47eebb547d124e33a1d5e093c9235dfcee9386b4c43a93dcc4b6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    MD5

    55f8c8443bcbe807523f70450da13b67

    SHA1

    274e3966fd2580d969e603f820e7a34b195d9057

    SHA256

    450123c7fd6801816379ef956f24ea76cc59fa5b3f6f22e656fa986eac6a513f

    SHA512

    f339c932f19553574c6e48c9d51a61df095f82c99a4a6eba169154152db42c2b2f7143f924f05b2a19bc6cb9e24101cf4400cfdd497ca85a94c0db65de37c670

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    MD5

    9cdcfc1279958c9c3c36d77ceecb0937

    SHA1

    9505016cd4dd6fb0caaca1ae7412d6037f8ae571

    SHA256

    c2726a39036b2c10e0f8acb9f04bfe8107c29c4d83c65c2724e84d8dd47b5af0

    SHA512

    9d845a056f279eae9df86e4a795f0f4ea3bc5f0c47a7a736356ce152448a08f13cc0634506df5f392f671fce63742d3d147efe8293af97c7ece4edccf2ecdeb1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    MD5

    fd4ee296c73fb1ef0a18882b09ea6bd6

    SHA1

    219be5079f0078fa1947cd44af24e9228acbd510

    SHA256

    e737e72814e28ecc563e852d9d8a6106cc2a6e6316a937ac79d399a5fdc88a96

    SHA512

    b3b8b77ce1ced729d4b4a4f4625fda2a2db7c8b663bad2fa2df61bea69d40a47240d4a69a73c87bdb12aa7fbb2443461343d01d783d122b173fee0917a2ba1a2

  • C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
    MD5

    bb494dd99be260d8eeb1980ce2a96d4c

    SHA1

    ac28b998e53f55c106f624025480ab9a51a00539

    SHA256

    910c0e730a147927a0b840ac1d5501c0046d6c568da8adced6ce9d95171bf886

    SHA512

    b135732538c19d17aca4ec51fea19d1200ae387e2fccdb91876e9890ac28de58bde4bba8d5801532a76015eda3d08bcc9f65398c4c5e63537e96d916ce7c7030

  • C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
    MD5

    bb494dd99be260d8eeb1980ce2a96d4c

    SHA1

    ac28b998e53f55c106f624025480ab9a51a00539

    SHA256

    910c0e730a147927a0b840ac1d5501c0046d6c568da8adced6ce9d95171bf886

    SHA512

    b135732538c19d17aca4ec51fea19d1200ae387e2fccdb91876e9890ac28de58bde4bba8d5801532a76015eda3d08bcc9f65398c4c5e63537e96d916ce7c7030

  • C:\Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
    MD5

    bb494dd99be260d8eeb1980ce2a96d4c

    SHA1

    ac28b998e53f55c106f624025480ab9a51a00539

    SHA256

    910c0e730a147927a0b840ac1d5501c0046d6c568da8adced6ce9d95171bf886

    SHA512

    b135732538c19d17aca4ec51fea19d1200ae387e2fccdb91876e9890ac28de58bde4bba8d5801532a76015eda3d08bcc9f65398c4c5e63537e96d916ce7c7030

  • C:\Users\Admin\AppData\Local\b46544cb-1721-4c10-9f1b-6501dc4a3d75\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
    MD5

    b2a93feb45e2d76bdfc83c623a14d5bf

    SHA1

    f39c5e92adb9ba4602d8973cc286ab265f11d137

    SHA256

    83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3

    SHA512

    db93fcade10ff3b4291d6337acdb9a675e178154d98c1feb5f5c63e814edd08a37cfcab0140a6e0b84e5013127a93c8c4c4249c5d669a148fb0caf65575c66a5

  • C:\Users\Admin\AppData\Local\b46544cb-1721-4c10-9f1b-6501dc4a3d75\83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3.exe
    MD5

    b2a93feb45e2d76bdfc83c623a14d5bf

    SHA1

    f39c5e92adb9ba4602d8973cc286ab265f11d137

    SHA256

    83c46c1972e541b0d3baebec8cbdfe6e6ae7d87643c701eed91ffc844b9168c3

    SHA512

    db93fcade10ff3b4291d6337acdb9a675e178154d98c1feb5f5c63e814edd08a37cfcab0140a6e0b84e5013127a93c8c4c4249c5d669a148fb0caf65575c66a5

  • \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

  • \Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
    MD5

    bb494dd99be260d8eeb1980ce2a96d4c

    SHA1

    ac28b998e53f55c106f624025480ab9a51a00539

    SHA256

    910c0e730a147927a0b840ac1d5501c0046d6c568da8adced6ce9d95171bf886

    SHA512

    b135732538c19d17aca4ec51fea19d1200ae387e2fccdb91876e9890ac28de58bde4bba8d5801532a76015eda3d08bcc9f65398c4c5e63537e96d916ce7c7030

  • \Users\Admin\AppData\Local\0dc040fd-d0ca-44dd-bdf9-02f2844c67ef\build2.exe
    MD5

    bb494dd99be260d8eeb1980ce2a96d4c

    SHA1

    ac28b998e53f55c106f624025480ab9a51a00539

    SHA256

    910c0e730a147927a0b840ac1d5501c0046d6c568da8adced6ce9d95171bf886

    SHA512

    b135732538c19d17aca4ec51fea19d1200ae387e2fccdb91876e9890ac28de58bde4bba8d5801532a76015eda3d08bcc9f65398c4c5e63537e96d916ce7c7030

  • memory/452-94-0x0000000000000000-mapping.dmp
  • memory/540-65-0x0000000000000000-mapping.dmp
  • memory/1072-102-0x0000000000000000-mapping.dmp
  • memory/1124-71-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1124-69-0x0000000000424141-mapping.dmp
  • memory/1264-63-0x0000000075891000-0x0000000075893000-memory.dmp
    Filesize

    8KB

  • memory/1264-62-0x0000000000424141-mapping.dmp
  • memory/1264-61-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1264-64-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1300-87-0x0000000001C50000-0x0000000001CEE000-memory.dmp
    Filesize

    632KB

  • memory/1300-80-0x0000000000000000-mapping.dmp
  • memory/1400-95-0x0000000000000000-mapping.dmp
  • memory/1556-93-0x0000000000000000-mapping.dmp
  • memory/1600-67-0x0000000000000000-mapping.dmp
  • memory/1740-88-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/1740-84-0x000000000046B76D-mapping.dmp
  • memory/1740-83-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/1884-60-0x0000000000920000-0x0000000000A3B000-memory.dmp
    Filesize

    1.1MB