Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 11:09

General

  • Target

    RX7??????/RX7??????.exe

  • Size

    9.0MB

  • MD5

    9bb985a8d656695e7145b476f5843d9b

  • SHA1

    692349d245063578785f536eff53e74cb2ed3e8f

  • SHA256

    016c08c41d90c4824da1a0986cb76ff50fd529ad699b6fdb02ce2b9bcdcd7fa1

  • SHA512

    5ea151ae0e88a16e908e5fe5446248095e8aed337617b375dae00cbf01cd7c93153c37315bb20f6579b7a17e908e8f8873577e680a387dc54da535f6c3756430

  • SSDEEP

    98304:bhR4VT3Qs1nkoqshkmafkVsKys31+9KiugFWQJtbGkPQlrW5pDwffds7p8PLC4G/:dmVjTVkoNnekL3wDBP2yiW7LnM/kVa92

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 10 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Blocklisted process makes network request 2 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 10 IoCs
  • Access Token Manipulation: Create Process with Token 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 6 IoCs
  • Modifies registry class 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RX7______\RX7______.exe
    "C:\Users\Admin\AppData\Local\Temp\RX7______\RX7______.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Users\Admin\AppData\Local\Temp\RX7______\Liux.exe
      "C:\Users\Admin\AppData\Local\Temp\RX7______\Liux.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\System32\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\RarSFX0\SJs8Z_S.msi"
        3⤵
        • Blocklisted process makes network request
        • Enumerates connected drives
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:2608
    • C:\Users\Admin\AppData\Local\Temp\RX7______\RX7远程管理.exe
      "C:\Users\Admin\AppData\Local\Temp\RX7______\RX7远程管理.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2468
  • 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
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding F3520F0389DCDF24159F51DC5338ADA5
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1824
      • C:\Windows\SysWOW64\reg.exe
        "C:\Windows\SysWOW64\reg.exe" add "HKEY_CLASSES_ROOT\.sysconfig" /ve /d "sysconfig" /f
        3⤵
        • Modifies registry class
        PID:2808
      • C:\Windows\SysWOW64\reg.exe
        "C:\Windows\SysWOW64\reg.exe" add "HKEY_CLASSES_ROOT\sysconfig\shell\open\command" /ve /d "wscript.exe //E:vbscript ""%1%""" /f
        3⤵
        • Modifies registry class
        PID:2288
    • C:\Windows\Installer\MSI16A5.tmp
      "C:\Windows\Installer\MSI16A5.tmp" /EnforcedRunAsAdmin /DontWait /dir "C:\Users\Public\Documents\" regsvr32.exe /s C:\Users\Public\Documents\Properties.dll
      2⤵
      • Executes dropped EXE
      • Access Token Manipulation: Create Process with Token
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      PID:1240
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" /s C:\Users\Public\Documents\Properties.dll
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1880
        • C:\Windows\system32\regsvr32.exe
          /s C:\Users\Public\Documents\Properties.dll
          4⤵
          • Loads dropped DLL
          PID:2740

Network

MITRE ATT&CK Matrix ATT&CK v13

Privilege Escalation

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Defense Evasion

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\f7612aa.rbs
    Filesize

    1KB

    MD5

    c6754de477177f229810268f1a5c0f17

    SHA1

    39b81a2f8806720409bdb632156769492a353d38

    SHA256

    952c19d55c4a448e32cf4ffe05397338efd5e03af771516a70642a86d8c5e79f

    SHA512

    90929b8911ecd58f576d4f362c17d36f085b2bcf1b7d98313bb142b68674aaf64de690eb5903c25cbc05b4923505d18988adacba8228d0d2499536ff783b8c52

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

    342B

    MD5

    9c0b2a3911329a75c8acdc2418f50b7e

    SHA1

    f584689ed1abd05e5eb44b3f0d9da7c65f9e1616

    SHA256

    2dfb51a5329211f9f6db07ffbd0bc8882c487f0d2bbab8dfa846d4b2f1229d77

    SHA512

    78854be81709802b9e6d5f7500ec528f4fea76c19f734b7fce7403364c6125eeeecc9cfa5060ec9c4252d59e2ac26498d2b71b810377e47853d43d41cb71e7f9

  • C:\Users\Admin\AppData\Local\Temp\Cab12C6.tmp
    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\RX7______\RX7远程管理.exe
    Filesize

    9.3MB

    MD5

    a8b40d4763f08d51bfed24d0bf258d0a

    SHA1

    2d949f75673e7489ccdabb266134a951dbf5586f

    SHA256

    e4a80728e6f8efdefc6f75560196ceda43d8835b1038feccd6b132cbc6ff6b5b

    SHA512

    7ad834243e35af6ecdafe253bffc7b80d2020737e92ad0a82fbb881fde4506c7e6759e05e114ece6c91eda6f3877d4b6ede4a11d73ec4b20b383648b5f42f5c9

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\SJs8Z_S.msi
    Filesize

    1.7MB

    MD5

    1a9ec16d6fa353519ac078f899b404c2

    SHA1

    11d99d3b6de198433fcfb8b22e754af0a3b400f9

    SHA256

    968fbcc7f09c15075a7fe3c7e079c478f4e2a58590bf83141c18328589b6aded

    SHA512

    2a941e12049ed124a058b3cbf6698de7ce3430965ffb5b391340f433f422dda96d788f65643790c9a21f53482577a49b43e3ad3b39a62a805fecb7fc3b76f115

  • C:\Users\Admin\AppData\Local\Temp\Tar1336.tmp
    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Public\Documents\Properties.dll
    Filesize

    731KB

    MD5

    60922574639b3dc592a6b42321dea9f5

    SHA1

    042ae7a3bce4873626a1d86db854566bcbb46fec

    SHA256

    3357eb473e3d2872ff58e832533ba1d615f30503a77d3b4a3960e8d3c5a81ab6

    SHA512

    4f3b0a0b5f9ed3529b1e57d589e4186af1a283abe87151c2da8e4bedb8ee6011c97aeba98b764e1c8199745ace7043df933e23a49ee59fe3d0d8635eb829f98a

  • C:\Windows\Installer\MSI16A5.tmp
    Filesize

    389KB

    MD5

    377c83c6f0f37653ff911dc06e6c4274

    SHA1

    ce1e53b5bf0a220346ab7379b93c4341c24fdd8a

    SHA256

    c290a133b60220479acf0469781de847eb7e4a6b0c92de45ee9223be5e0ca769

    SHA512

    47bed026ef3d3e1a88a8cec3e0e2904029ec6f2e0ed9bb8d8836564fa713e882cf9bbf0d1e1dc7887072804578edd6af21b047d579f85f27bba733a20125fdd8

  • \Users\Admin\AppData\Local\Temp\RX7______\Liux.exe
    Filesize

    1.4MB

    MD5

    c4efb271c645d5a113c348ffa4b69724

    SHA1

    a6cd25cb6f7b952be89cc86976eb76bb4e6c3c72

    SHA256

    37f48b8f4a5cbe718477001f4869ed04c7f9b8dae7870ab80e7ef36fc00be0c1

    SHA512

    8fb88d24452f14b82aed26ab6aa28d16a4b77b50b75e919e486ade7320513e5fe66a85e8861ffbd6f78bf81c64407078109e97dddda42662d3b0bbd61e93a790

  • \Windows\Installer\MSI1366.tmp
    Filesize

    436KB

    MD5

    5788efa607d26332d6d7f5e6a1f6bd6f

    SHA1

    e7749843cc3e89bc81649087de4ad44c93d48bc6

    SHA256

    9fc2608c9e5ef5a88dd91c82660fa297144ba6bbf4602140d638de7233a4625d

    SHA512

    ce472ca4f956da4160cfd9b9051455974e24dd8b23a0b7b197afd1f7552e37980809e523bedc0d4c2f4c9cb6ef300b221e6404e6e6a1b789b67756550ddd2104

  • memory/1880-107-0x0000000002210000-0x0000000002326000-memory.dmp
    Filesize

    1.1MB