Analysis

  • max time kernel
    68s
  • max time network
    69s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 17:57

General

  • Target

    solara--main/BootstrapperV1.23 (1).exe

  • Size

    800KB

  • MD5

    02c70d9d6696950c198db93b7f6a835e

  • SHA1

    30231a467a49cc37768eea0f55f4bea1cbfb48e2

  • SHA256

    8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3

  • SHA512

    431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb

  • SSDEEP

    12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Themida packer 7 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • cURL User-Agent 8 IoCs

    Uses User-Agent string associated with cURL utility.

Processes

  • C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV1.23 (1).exe
    "C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV1.23 (1).exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SYSTEM32\cmd.exe
      "cmd" /c ipconfig /all
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2480
      • C:\Windows\system32\ipconfig.exe
        ipconfig /all
        3⤵
        • Gathers network information
        PID:3736
    • C:\Windows\SYSTEM32\cmd.exe
      "cmd" /c wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4004
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1452
    • C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV2.13.exe
      "C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV2.13.exe" --oldBootstrapper "C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV1.23 (1).exe" --isUpdate true
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3928
      • C:\ProgramData\Solara\Solara.exe
        "C:\ProgramData\Solara\Solara.exe"
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:3212
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4380

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Solara\Microsoft.Web.WebView2.Core.dll

      Filesize

      557KB

      MD5

      b037ca44fd19b8eedb6d5b9de3e48469

      SHA1

      1f328389c62cf673b3de97e1869c139d2543494e

      SHA256

      11e88b2ca921e5c88f64567f11bd83cbc396c10365d40972f3359fcc7965d197

      SHA512

      fa89ab3347fd57486cf3064ad164574f70e2c2b77c382785479bfd5ab50caa0881de3c2763a0932feac2faaf09479ef699a04ba202866dc7e92640246ba9598b

    • C:\ProgramData\Solara\Microsoft.Web.WebView2.Wpf.dll

      Filesize

      50KB

      MD5

      e107c88a6fc54cc3ceb4d85768374074

      SHA1

      a8d89ae75880f4fca7d7167fae23ac0d95e3d5f6

      SHA256

      8f821f0c818f8d817b82f76c25f90fde9fb73ff1ae99c3df3eaf2b955653c9c8

      SHA512

      b39e07b0c614a0fa88afb1f3b0d9bb9ba9c932e2b30899002008220ccf1acb0f018d5414aee64d92222c2c39f3ffe2c0ad2d9962d23aaa4bf5750c12c7f3e6fe

    • C:\ProgramData\Solara\Monaco\combined.html

      Filesize

      14KB

      MD5

      0c9f56d7cd78d9fba2eada822f18d532

      SHA1

      cb8cdf91491059dddf9cb30dc9f0615fb6f7f0d0

      SHA256

      58296c2864e6f68dda0e4710fa284a37eb36c46b3b346590d252a0a9dabb1602

      SHA512

      1b70e80d94e187e13ffc5a6374a96366983b0ac2aab7f5bac81522a3fec2de89b212eb4d1e8f2aa153639879de2b445b7767fba2f6f24d9914edb8dbba3efd63

    • C:\ProgramData\Solara\Monaco\index.html

      Filesize

      14KB

      MD5

      610eb8cecd447fcf97c242720d32b6bd

      SHA1

      4b094388e0e5135e29c49ce42ff2aa099b7f2d43

      SHA256

      107d8d9d6c94d2a86ac5af4b4cec43d959c2e44d445017fea59e2e0a5efafdc7

      SHA512

      cf15f49ef3ae578a5f725e24bdde86c33bbc4fd30a6eb885729fd3d9b151a4b13822fa8c35d3e0345ec43d567a246111764812596fd0ecc36582b8ee2a76c331

    • C:\ProgramData\Solara\Newtonsoft.Json.dll

      Filesize

      695KB

      MD5

      195ffb7167db3219b217c4fd439eedd6

      SHA1

      1e76e6099570ede620b76ed47cf8d03a936d49f8

      SHA256

      e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

      SHA512

      56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

    • C:\ProgramData\Solara\Solara.exe

      Filesize

      613KB

      MD5

      efa26a96b7af259f6682bc888a8b6a14

      SHA1

      9800a30228504c30e7d8aea873ded6a7d7d133bb

      SHA256

      18f4dca864799d7cd00a26ae9fb7eccf5c7cf3883c51a5d0744fd92a60ca1953

      SHA512

      7ca4539ab544aee162c7d74ac94b290b409944dd746286e35c8a2712db045d255b9907d1ebea6377d1406ddd87f118666121d0ec1abe0e9415de1bba6799f76e

    • C:\ProgramData\Solara\SolaraV3.dll

      Filesize

      6.9MB

      MD5

      12daf1ddbc2b2634a1a76adc3ec2d66c

      SHA1

      9a03f18aca54fb3b3190c1d65e424ffb9a4e6ffe

      SHA256

      2b6a59eb5b1861138dd82e0d1ca304babe47886a0eeca29d45c5d36363cc3b23

      SHA512

      7af52091f371bdad89be6900a7d3636d4f74fad2c9614ad1a322df342515d8163f224447c73a8a66875a56285806e6437794a292062fca11f2e5eeee03bea597

    • C:\ProgramData\Solara\WebView2Loader.dll

      Filesize

      133KB

      MD5

      a0bd0d1a66e7c7f1d97aedecdafb933f

      SHA1

      dd109ac34beb8289030e4ec0a026297b793f64a3

      SHA256

      79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36

      SHA512

      2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

    • C:\ProgramData\Solara\Wpf.Ui.dll

      Filesize

      5.2MB

      MD5

      aead90ab96e2853f59be27c4ec1e4853

      SHA1

      43cdedde26488d3209e17efff9a51e1f944eb35f

      SHA256

      46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

      SHA512

      f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

    • C:\Users\Admin\AppData\Local\Temp\solara--main\BootstrapperV2.13.exe

      Filesize

      2.9MB

      MD5

      fdeda3eb502d7eec02277cf08c7d926f

      SHA1

      fbf43baa8e3c610933866630ba767b60bbd0313f

      SHA256

      4d73c67dc61543f6116f8c0a8f6794ece2993e78713793c6e2066285e2607fd0

      SHA512

      0f6e6074951eda7347cc527734b6103ed10002a2e28aaee2a74a4e346576b1e448175e10bbd8f8e9adbd36a15fa22557a7a7c6465c5fcb9dc772a41c00a0112d

    • memory/1500-17-0x00007FFB10BC0000-0x00007FFB11681000-memory.dmp

      Filesize

      10.8MB

    • memory/1500-0-0x00007FFB10BC3000-0x00007FFB10BC5000-memory.dmp

      Filesize

      8KB

    • memory/1500-4-0x00000279B5260000-0x00000279B5282000-memory.dmp

      Filesize

      136KB

    • memory/1500-2-0x00007FFB10BC0000-0x00007FFB11681000-memory.dmp

      Filesize

      10.8MB

    • memory/1500-1-0x000002799A9C0000-0x000002799AA8E000-memory.dmp

      Filesize

      824KB

    • memory/3212-114-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-103-0x0000021FF77B0000-0x0000021FF7840000-memory.dmp

      Filesize

      576KB

    • memory/3212-110-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-111-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-112-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-98-0x0000021FDD290000-0x0000021FDD2A0000-memory.dmp

      Filesize

      64KB

    • memory/3212-96-0x0000021FF75F0000-0x0000021FF76A2000-memory.dmp

      Filesize

      712KB

    • memory/3212-109-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-113-0x0000000180000000-0x0000000181173000-memory.dmp

      Filesize

      17.4MB

    • memory/3212-91-0x0000021FDCD30000-0x0000021FDCDCC000-memory.dmp

      Filesize

      624KB

    • memory/3212-94-0x0000021FF7530000-0x0000021FF75EA000-memory.dmp

      Filesize

      744KB

    • memory/3212-93-0x0000021FF7A70000-0x0000021FF7FAC000-memory.dmp

      Filesize

      5.2MB

    • memory/3928-23-0x000001BA4F530000-0x000001BA4F630000-memory.dmp

      Filesize

      1024KB

    • memory/3928-37-0x000001BA80040000-0x000001BA80052000-memory.dmp

      Filesize

      72KB

    • memory/3928-35-0x000001BA4E720000-0x000001BA4E72A000-memory.dmp

      Filesize

      40KB

    • memory/3928-34-0x000001BA1B980000-0x000001BA1B99E000-memory.dmp

      Filesize

      120KB

    • memory/3928-32-0x000001BA1B760000-0x000001BA1B812000-memory.dmp

      Filesize

      712KB

    • memory/3928-30-0x000001BA4E710000-0x000001BA4E718000-memory.dmp

      Filesize

      32KB

    • memory/3928-29-0x000001BA4E640000-0x000001BA4E64A000-memory.dmp

      Filesize

      40KB

    • memory/3928-27-0x000001BA4E6E0000-0x000001BA4E6F6000-memory.dmp

      Filesize

      88KB

    • memory/3928-28-0x000001BA4E650000-0x000001BA4E65A000-memory.dmp

      Filesize

      40KB

    • memory/3928-26-0x000001BA4E660000-0x000001BA4E668000-memory.dmp

      Filesize

      32KB

    • memory/3928-25-0x000001BA4E6B0000-0x000001BA4E6D6000-memory.dmp

      Filesize

      152KB

    • memory/3928-24-0x000001BA4E630000-0x000001BA4E63A000-memory.dmp

      Filesize

      40KB

    • memory/3928-22-0x000001BA4A5D0000-0x000001BA4A5DE000-memory.dmp

      Filesize

      56KB

    • memory/3928-21-0x000001BA4E670000-0x000001BA4E6A8000-memory.dmp

      Filesize

      224KB

    • memory/3928-20-0x000001BA4A540000-0x000001BA4A548000-memory.dmp

      Filesize

      32KB

    • memory/3928-19-0x000001BA31B00000-0x000001BA31B10000-memory.dmp

      Filesize

      64KB

    • memory/3928-18-0x000001BA2FC30000-0x000001BA2FF10000-memory.dmp

      Filesize

      2.9MB