Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2024 18:27

General

  • Target

    SolaraB2/SolaraBootstrapper.exe

  • Size

    798KB

  • MD5

    7416a188b82e9dc4b020a59d3c9267d5

  • SHA1

    15b67c0e13667dd00f2f1d1d2d3132e629e746f3

  • SHA256

    6a6990c2da4da8f8870da3e33865a1dff8f16874793b232971194c074f3b7838

  • SHA512

    3f2616216e8dc70362cc6d3f8e76a009108fe04d98697a744c131b76f3c693364ef2a80716ccd9a8f9987d2ac10b0316b0328a0066260055fcbadcd449aaf704

  • SSDEEP

    12288:pfSmzhHoAX5TyQvgwRojAojGdJaTGLLvlguxD:smzhHWQDRojAojGddLL

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 3 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 5 IoCs
  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SolaraB2\SolaraBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraB2\SolaraBootstrapper.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2200
    • C:\Windows\SysWOW64\msiexec.exe
      "msiexec" /i "C:\Users\Admin\AppData\Local\Temp\node-v18.16.0-x64.msi" /qn
      2⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      PID:2508
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1488
      2⤵
      • Program crash
      PID:1564
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Windows\system32\MsiExec.exe
      C:\Windows\system32\MsiExec.exe -Embedding 5753C7A5E1AE5900DAA4C1851C1503D0
      2⤵
      • Loads dropped DLL
      PID:2684
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 31242046DC869F7B29AAD9DBF1278C6E
      2⤵
      • Loads dropped DLL
      PID:1624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    342B

    MD5

    8402f24486dc9d4676344d0626a666bf

    SHA1

    3336e5bb8a959d41a1025793a11862f3364b9a8d

    SHA256

    36d664dd79f2b6a4e91b747d0e46b01eccaeb0094f26c829755eb2136c55d947

    SHA512

    a255c56a60ac0f29882117d6c97c644d70cf8ca3cab812304c6db01ecc58d4c0e70fb22c07d92175203b3f0ac51eac79783b313d6995aad4e4b2e173a9601350

  • C:\Users\Admin\AppData\Local\Temp\Cab7715.tmp
    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar7786.tmp
    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\Temp\node-v18.16.0-x64.msi
    Filesize

    30.1MB

    MD5

    0e4e9aa41d24221b29b19ba96c1a64d0

    SHA1

    231ade3d5a586c0eb4441c8dbfe9007dc26b2872

    SHA256

    5bfb6f3ab89e198539408f7e0e8ec0b0bd5efe8898573ec05b381228efb45a5d

    SHA512

    e6f27aecead72dffecbeaad46ebdf4b1fd3dbcddd1f6076ba183b654e4e32d30f7af1236bf2e04459186e993356fe2041840671be73612c8afed985c2c608913

  • C:\Windows\Installer\MSI9CC2.tmp
    Filesize

    122KB

    MD5

    9fe9b0ecaea0324ad99036a91db03ebb

    SHA1

    144068c64ec06fc08eadfcca0a014a44b95bb908

    SHA256

    e2cce64916e405976a1d0c522b44527d12b1cba19de25da62121cf5f41d184c9

    SHA512

    906641a73d69a841218ae90b83714a05af3537eec8ad1d761f58ac365cf005bdd74ad88f71c4437aaa126ac74fa46bcad424d17c746ab197eec2caa1bd838176

  • C:\Windows\Installer\MSI9E4A.tmp
    Filesize

    211KB

    MD5

    a3ae5d86ecf38db9427359ea37a5f646

    SHA1

    eb4cb5ff520717038adadcc5e1ef8f7c24b27a90

    SHA256

    c8d190d5be1efd2d52f72a72ae9dfa3940ab3faceb626405959349654fe18b74

    SHA512

    96ecb3bc00848eeb2836e289ef7b7b2607d30790ffd1ae0e0acfc2e14f26a991c6e728b8dc67280426e478c70231f9e13f514e52c8ce7d956c1fad0e322d98e0

  • memory/2200-0-0x000000007451E000-0x000000007451F000-memory.dmp
    Filesize

    4KB

  • memory/2200-1-0x00000000011F0000-0x00000000012BE000-memory.dmp
    Filesize

    824KB

  • memory/2200-2-0x0000000074510000-0x0000000074BFE000-memory.dmp
    Filesize

    6.9MB

  • memory/2200-92-0x000000007451E000-0x000000007451F000-memory.dmp
    Filesize

    4KB

  • memory/2200-93-0x0000000074510000-0x0000000074BFE000-memory.dmp
    Filesize

    6.9MB