Analysis

  • max time kernel
    62s
  • max time network
    65s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    27-12-2024 20:07

General

  • Target

    Bootstrapper.exe

  • Size

    800KB

  • MD5

    02c70d9d6696950c198db93b7f6a835e

  • SHA1

    30231a467a49cc37768eea0f55f4bea1cbfb48e2

  • SHA256

    8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3

  • SHA512

    431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb

  • SSDEEP

    12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Modifies registry class 48 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4580
    • C:\Windows\SYSTEM32\cmd.exe
      "cmd" /c ipconfig /all
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3400
      • C:\Windows\system32\ipconfig.exe
        ipconfig /all
        3⤵
        • Gathers network information
        PID:3164
    • 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:1096
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:708
    • C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.05.exe
      "C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.05.exe" --oldBootstrapper "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe" --isUpdate true
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Enumerates connected drives
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2828
      • F:\Solara\Solara.exe
        "F:\Solara\Solara.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.05.exe

    Filesize

    2.8MB

    MD5

    241706a4b2aa26c47eb1dbadf12eba14

    SHA1

    e46f254c6c29bf9371f04b7a27fb1569a7dbba23

    SHA256

    11b86e51f1f67bc7d59a881aa9cbbb5519c118ea74291476ff61fb9ddbff454e

    SHA512

    2e876573e2f44491bfe0cc915910f66d030c5e013f36d72e460603480f292bf6f4c5625cebeba47a9ea4fc564e776c656f74c5d7032ea0340de3840db8fe49ea

  • F:\Solara\Newtonsoft.Json.dll

    Filesize

    695KB

    MD5

    195ffb7167db3219b217c4fd439eedd6

    SHA1

    1e76e6099570ede620b76ed47cf8d03a936d49f8

    SHA256

    e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

    SHA512

    56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

  • F:\Solara\Solara.exe

    Filesize

    133KB

    MD5

    c6f770cbb24248537558c1f06f7ff855

    SHA1

    fdc2aaae292c32a58ea4d9974a31ece26628fdd7

    SHA256

    d1e4a542fa75f6a6fb636b5de6f7616e2827a79556d3d9a4afc3ecb47f0beb2b

    SHA512

    cac56c58bd01341ec3ff102fe04fdb66625baad1d3dd7127907cd8453d2c6e2226ad41033e16ba20413a509fc7c826e4fdc0c0d553175eb6f164c2fc0906614a

  • F:\Solara\Wpf.Ui.dll

    Filesize

    5.2MB

    MD5

    aead90ab96e2853f59be27c4ec1e4853

    SHA1

    43cdedde26488d3209e17efff9a51e1f944eb35f

    SHA256

    46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

    SHA512

    f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

  • memory/2828-31-0x000001A625EF0000-0x000001A625EFA000-memory.dmp

    Filesize

    40KB

  • memory/2828-32-0x000001A625E70000-0x000001A625E7A000-memory.dmp

    Filesize

    40KB

  • memory/2828-21-0x000001A6062B0000-0x000001A60658A000-memory.dmp

    Filesize

    2.9MB

  • memory/2828-22-0x000001A6069A0000-0x000001A6069B0000-memory.dmp

    Filesize

    64KB

  • memory/2828-23-0x000001A625E00000-0x000001A625E08000-memory.dmp

    Filesize

    32KB

  • memory/2828-24-0x000001A625E80000-0x000001A625EB8000-memory.dmp

    Filesize

    224KB

  • memory/2828-25-0x000001A625E50000-0x000001A625E5E000-memory.dmp

    Filesize

    56KB

  • memory/2828-26-0x000001A626D10000-0x000001A626E10000-memory.dmp

    Filesize

    1024KB

  • memory/2828-27-0x000001A625E60000-0x000001A625E6A000-memory.dmp

    Filesize

    40KB

  • memory/2828-28-0x000001A625EC0000-0x000001A625EE8000-memory.dmp

    Filesize

    160KB

  • memory/2828-29-0x000001A625F00000-0x000001A625F08000-memory.dmp

    Filesize

    32KB

  • memory/2828-30-0x000001A626E10000-0x000001A626E26000-memory.dmp

    Filesize

    88KB

  • memory/2828-44-0x000001A664CB0000-0x000001A664CC2000-memory.dmp

    Filesize

    72KB

  • memory/2828-42-0x000001A664C40000-0x000001A664C4A000-memory.dmp

    Filesize

    40KB

  • memory/2828-33-0x000001A626E40000-0x000001A626E48000-memory.dmp

    Filesize

    32KB

  • memory/2828-35-0x000001A664D50000-0x000001A664DDA000-memory.dmp

    Filesize

    552KB

  • memory/2828-36-0x000001A664DE0000-0x000001A664E00000-memory.dmp

    Filesize

    128KB

  • memory/2828-38-0x000001A66CFD0000-0x000001A66CFEE000-memory.dmp

    Filesize

    120KB

  • memory/2828-40-0x000001A66E6B0000-0x000001A66E762000-memory.dmp

    Filesize

    712KB

  • memory/4196-463-0x000002650D710000-0x000002650D734000-memory.dmp

    Filesize

    144KB

  • memory/4196-465-0x0000026528C80000-0x00000265291BC000-memory.dmp

    Filesize

    5.2MB

  • memory/4196-466-0x0000026528740000-0x00000265287FA000-memory.dmp

    Filesize

    744KB

  • memory/4196-468-0x0000026528800000-0x00000265288B2000-memory.dmp

    Filesize

    712KB

  • memory/4580-20-0x00007FFB59B40000-0x00007FFB5A602000-memory.dmp

    Filesize

    10.8MB

  • memory/4580-0-0x00007FFB59B43000-0x00007FFB59B45000-memory.dmp

    Filesize

    8KB

  • memory/4580-4-0x000001B1ECBF0000-0x000001B1ECC12000-memory.dmp

    Filesize

    136KB

  • memory/4580-2-0x00007FFB59B40000-0x00007FFB5A602000-memory.dmp

    Filesize

    10.8MB

  • memory/4580-1-0x000001B1E7A70000-0x000001B1E7B3E000-memory.dmp

    Filesize

    824KB