Analysis

  • max time kernel
    145s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-04-2023 16:36

General

  • Target

    Ruzvelt.exe

  • Size

    336KB

  • MD5

    9a9f46fcecc308ef34b8148038a16596

  • SHA1

    0fdc279efc090a9b3e421b28d06b8dc0aef0d2b8

  • SHA256

    d69aa2521826d527ff78c9fff569d344cb4bbb93bb781d4b7e5d1d29ce1ce1a9

  • SHA512

    e0bc2cced00b2d0919a8525e6a4b52d9eaac1996c24c99585266ccf9f55833139b00e43a60ba628a0a41c46947b528f5f1659b6162ae9a6a5012cf1be6ead98f

  • SSDEEP

    6144:KuoFMf8kBfURCidAwGw6DHQuJ8IWtaOgFlO:Kuo08kBf5itGwY38IsaDO

Malware Config

Extracted

Family

vidar

Version

3.5

Botnet

2234cb18bdcd93ea6f4e5f1473025a81

C2

https://steamcommunity.com/profiles/76561199497218285

https://t.me/tg_duckworld

Attributes
  • profile_id_v2

    2234cb18bdcd93ea6f4e5f1473025a81

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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.

  • Modifies system certificate store 2 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ruzvelt.exe
    "C:\Users\Admin\AppData\Local\Temp\Ruzvelt.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    PID:1712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\Local\Temp\TarF31D.tmp

    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/1712-67-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-66-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-55-0x0000000000220000-0x0000000000277000-memory.dmp

    Filesize

    348KB

  • memory/1712-65-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-60-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-119-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-120-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-121-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1712-59-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB

  • memory/1712-56-0x0000000000400000-0x0000000002BAF000-memory.dmp

    Filesize

    39.7MB