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
    19-04-2024 23:51

General

  • Target

    $_2_/TXSSOSetup.exe

  • Size

    1.2MB

  • MD5

    e9756141d085d3b332014d7f9b184480

  • SHA1

    7527574eb3b415744815ec4c51ae423ee58494e7

  • SHA256

    8aa5ad11255f7526bd924a14b2ad0f4511ec2abf9f80abc5d2ac3d147490088a

  • SHA512

    20f6c37ca83d4fe3cc34fe0018d184447ec2c2c990930601eeb9e5f29e8da4cc1b172894deada85d0bdcbb7bb09e907a757aa2932aaaea46fa5ed19444a0a439

  • SSDEEP

    24576:PBKYYrcWwGWZBxY/7jeN9B8dz8w47dywfUKIKvyqNJvbqaEaJe:2oWwG+Bx28odYy4UKl0dge

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 13 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$_2_\TXSSOSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\$_2_\TXSSOSetup.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Users\Admin\AppData\Local\Temp\TXSSO\InstTXSSO.exe
      "C:\Users\Admin\AppData\Local\Temp\TXSSO\InstTXSSO.exe" "C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2976
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" /s "C:\Program Files (x86)\Common Files\Tencent\TXSSO\1.2.1.94\Bin\\SSOCommon.dll"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:2948
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" /s "C:\Program Files (x86)\Common Files\Tencent\TXSSO\1.2.1.94\Bin\\npSSOAxCtrlForPTLogin.dll"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:2648
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" /s "C:\Program Files (x86)\Common Files\Tencent\TXSSO\1.2.1.94\Bin\\SSOLUIControl.dll"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:2652

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\Bin\SSOPlatform.dll
    Filesize

    1.3MB

    MD5

    73f49831086377eb8d02b2b30f256897

    SHA1

    0930b17f251999ddc0ac636a416564613fd8905e

    SHA256

    cff96f4fbfa0b7efc619a0c9ad39978873e24a8c9e737f6c64d57836d99bd182

    SHA512

    d68ce3882ed3097f820e33099766c5150be52e48bc0f5c7c36f30dec2497b4b244ecc9bc0e20c655eb275f6cce59be23c2bf4af8f4e96167ef098d55414766d3

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\I18N\2052\PGFStringBundle.xml
    Filesize

    6KB

    MD5

    15b8a58b2174cb7766e0e373580265a2

    SHA1

    c4f707c12e8f798b8b59aac155dd9fac89cd732c

    SHA256

    673eb178dae8cf3addcbb5d82969ec47a3631ac59a20e6cc806938de5cc3beb6

    SHA512

    0f8dc202a4eec0e8d66faed1dbbe57e599024f0206bcfc13141ecf56e5873d0278a394ba64794a5a6a08d987a0b81878732251161ba5ecec8d69560d9846c0f6

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\I18N\2052\SSOStringBundle.xml
    Filesize

    3KB

    MD5

    9abdb8aa100a963bee543ef44d194e76

    SHA1

    a10a879eaf2ad95a2fce534959ad8ff25079a9fb

    SHA256

    58adbbb6f500699838a417c5d8fbd1ad80e44849dafce453f80bc75f5d90b614

    SHA512

    5a1a40eccecfaeb4dac7a23f1904861735ab50b52b0e0240e7f34aa7a9c7c627d6867fda16dd3827b2fdb33be2c759b492ff5dd658a23cfa1a161d534172973b

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\I18N\SSOConfig.xml
    Filesize

    394B

    MD5

    2b563ba463450a8fd6f4bb7789503b44

    SHA1

    3cb6c17b613682106f3382d212d29b8af10df13e

    SHA256

    32f912e1eceb0000e04ddb3c627b00c4533e882cc34e3d8117bc9cafeb2faf8b

    SHA512

    b392808aa0686ff4b374c0e99af68428b361e6880f22dd5d59ca08e78228ad3162927d3fc347b53b26dae2bfbafbc795209fa5d1606af69604b9d2dc689affb4

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\bin\SSOCommon.dll
    Filesize

    1.5MB

    MD5

    8db6c69fb57b1b3c39e26deb183e0a71

    SHA1

    79430886d5903784f53d2b541bc26512b1f5517c

    SHA256

    bbed821ef363e1dd69442417355d781391d1af6532d62d1f67c2c64de9121155

    SHA512

    c16015df421080b296f6361ddbaf6f73ab5515de1c7202a7e0507ccf83471d5af974402c915f854294a0af2d2be1e43b694ec84c706355b96985eb0e6cae9fed

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\bin\SSOLUIControl.dll
    Filesize

    482KB

    MD5

    0a97d034a281a99b4c5cbe10e30c27db

    SHA1

    c1bd2da331903cbd35e8bb61186e527653628d4a

    SHA256

    5ee176db9b6317ad7dbd0adc2f6b1735ed2fd55b10084565e27f28f829fe09dc

    SHA512

    c6cd07d06cb6b1913cc59f67707dbd4e9444ea70078209faeacbdd8e35d9f632306fd907b42b18132583b2cc9938790b28a250ed4b76ef11d0288879a7c97a47

  • C:\Users\Admin\AppData\Local\Temp\TXSSO\TXSSO\bin\npSSOAxCtrlForPTLogin.dll
    Filesize

    194KB

    MD5

    6aaafff9946c2fca0f74a45497c781f5

    SHA1

    aab0557e83ed54b956ffd159e1f76a5abeca9ef6

    SHA256

    9bdf42d867153622be14a65d7e56de0dde2f6e8c3ca693e0e50b65cd2756ef23

    SHA512

    171282874f5f08ae72ed84425be6bc2b099470d76f52f2059891746f853dcfc7f6e1f973b6ba13b063e4309839ec6674431fd09bb8f72dbed44fccd8cc96395b

  • C:\Users\Admin\AppData\Roaming\Tencent\Logs\regsvr32.tlg
    Filesize

    752B

    MD5

    8c2335654865a5f3f0f4bfb3419d8de1

    SHA1

    7b1522ef8a3ca900041f0babbd6008764814a1da

    SHA256

    03a1f22fe47633c1d8f53a8605b80f16c913c918ad58e0f1dd3faa8655731c6e

    SHA512

    bd48b016184dcae1f53a313ae0b442d12870b2dce67d37fa441ba4a909f9bc57dd44841acecee798108b696e540d497d1b51bc0f524b291f7126e0a69d5d1451

  • \Users\Admin\AppData\Local\Temp\TXSSO\InstTXSSO.exe
    Filesize

    92KB

    MD5

    58b88204dec307f6a58c6295d3f29c48

    SHA1

    20d225e0bf73882603d3e936adb1355fe643226d

    SHA256

    45c3dfbb89ad4298beb4724776df711d4dccd03f1e636c5ed20fa602e246c7bf

    SHA512

    cb3186cfe33c5477b1ed3c37064dadc6a5ba10af033f963fd79fcfcb4bb6bbd9079e1cb531bf91217bd118817fa3bc058ad89c7ad04b4a2fa5f89947ea0aea88

  • \Users\Admin\AppData\Local\Temp\nso1190.tmp\System.dll
    Filesize

    11KB

    MD5

    4cf3a81ab4579b30117c8a39a489d51d

    SHA1

    61af475e11e4e79e6a11e761fcb540d9c5eec0e9

    SHA256

    29f4a1c87161643e0ed5c46b46786d9a48437ec5dc6b99f4ff14037429e6e20a

    SHA512

    885d131304afbe92b9b0a16830b6b34c6b78e44f972c20aad63cf3695a400f2d82cf217753da2a2e5e399fdd5dd3306a257e9501a86884cad853e01ee125a664