Analysis

  • max time kernel
    45s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 13:44

General

  • Target

    ce25d12e8a646343cb0067adf988cc55053c59c92b04515c500f5ebe5500d925.exe

  • Size

    689KB

  • MD5

    ba87ab0cc90d6895f3952987c2eb8a85

  • SHA1

    027751bb9e9a42960c86dd09cd1333a95ea5d538

  • SHA256

    ce25d12e8a646343cb0067adf988cc55053c59c92b04515c500f5ebe5500d925

  • SHA512

    9750565d67241388fbba63f6412ec7276e7233711fed03713fe1d67b0693b04aee0cd6211ff8b597ca710b3f7b48e292dafb2888b95694b7e955aa985a2491c8

  • SSDEEP

    12288:oC3XHygb5fVdsbkG4G4Y7jeKuVnvon+N83LwwiAn6KkM33nxD3jeKuVGv/9+N8Oe:o63yW5fVdHG4G37tUnvone83Z76bMHxN

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 6 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 23 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 56 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ce25d12e8a646343cb0067adf988cc55053c59c92b04515c500f5ebe5500d925.exe
    "C:\Users\Admin\AppData\Local\Temp\ce25d12e8a646343cb0067adf988cc55053c59c92b04515c500f5ebe5500d925.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:912
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s "C:\Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1736
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies registry class
        PID:1356
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2036

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Browser Extensions

    1
    T1176

    Defense Evasion

    Modify Registry

    2
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601.dll
      Filesize

      85KB

      MD5

      dbd8f0b49d5f216097c9b0d04a963eef

      SHA1

      4ff1cbf6b6a9709208daf9156bdb9eb364dbd594

      SHA256

      3c601edddf1113b296bf50c0e41226e0e31dea80f790375fa5e75cc5e526172a

      SHA512

      cbd9f4ee75d727019d178d734b3888234f56829d2320f15b4fe10565e66726fc0c1ea25af56f70fd97c185277ca2690f107dfee0499f8d486f4696ff9c93dda3

    • C:\Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601x64.dll
      Filesize

      100KB

      MD5

      e7ae85e323093a23d04403d93694dac4

      SHA1

      923cdc2e49a59c9ae1f2d2ce35b605bcd9bd59af

      SHA256

      447736dfe55270fb70530606107d70fcd88423e6a0ccbfd17e26e60d46bbb6f3

      SHA512

      178dc0fbcc5d38aa35576e0c179399335cc9b596f35d9661ddd0f7671e6951d8482137459b290b16d4b278ff11e313f1f6071347bde4ef30a733e634b4ae5695

    • \Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601.dll
      Filesize

      85KB

      MD5

      dbd8f0b49d5f216097c9b0d04a963eef

      SHA1

      4ff1cbf6b6a9709208daf9156bdb9eb364dbd594

      SHA256

      3c601edddf1113b296bf50c0e41226e0e31dea80f790375fa5e75cc5e526172a

      SHA512

      cbd9f4ee75d727019d178d734b3888234f56829d2320f15b4fe10565e66726fc0c1ea25af56f70fd97c185277ca2690f107dfee0499f8d486f4696ff9c93dda3

    • \Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601x64.dll
      Filesize

      100KB

      MD5

      e7ae85e323093a23d04403d93694dac4

      SHA1

      923cdc2e49a59c9ae1f2d2ce35b605bcd9bd59af

      SHA256

      447736dfe55270fb70530606107d70fcd88423e6a0ccbfd17e26e60d46bbb6f3

      SHA512

      178dc0fbcc5d38aa35576e0c179399335cc9b596f35d9661ddd0f7671e6951d8482137459b290b16d4b278ff11e313f1f6071347bde4ef30a733e634b4ae5695

    • \Program Files (x86)\TrustMediaViewerV1\TrustMediaViewerV1alpha4601\ie\TrustMediaViewerV1alpha4601x64.dll
      Filesize

      100KB

      MD5

      e7ae85e323093a23d04403d93694dac4

      SHA1

      923cdc2e49a59c9ae1f2d2ce35b605bcd9bd59af

      SHA256

      447736dfe55270fb70530606107d70fcd88423e6a0ccbfd17e26e60d46bbb6f3

      SHA512

      178dc0fbcc5d38aa35576e0c179399335cc9b596f35d9661ddd0f7671e6951d8482137459b290b16d4b278ff11e313f1f6071347bde4ef30a733e634b4ae5695

    • \Users\Admin\AppData\Local\Temp\nstE1AA.tmp\System.dll
      Filesize

      11KB

      MD5

      c17103ae9072a06da581dec998343fc1

      SHA1

      b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

      SHA256

      dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

      SHA512

      d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

    • \Users\Admin\AppData\Local\Temp\nstE1AA.tmp\aminsis.dll
      Filesize

      567KB

      MD5

      f346047b13f37f79c462e59a6319faa1

      SHA1

      ce9e7cb9719000a69b463fe024c81229e322279f

      SHA256

      e78e0e61707cabec8383f1e74da9db8e0fa123a3a7b36f0080d70fbaed6f7453

      SHA512

      429209cc489ba9ac2d62055b128efb3cded3e31f966c7cdb1aee592ec7a54ab090526705fa2519498d92eb4bc2efa141cd83adc6c251b793388ad1208b172167

    • memory/536-54-0x0000000075B11000-0x0000000075B13000-memory.dmp
      Filesize

      8KB

    • memory/912-56-0x0000000000000000-mapping.dmp
    • memory/1356-65-0x0000000000000000-mapping.dmp
    • memory/1356-66-0x000007FEFBC61000-0x000007FEFBC63000-memory.dmp
      Filesize

      8KB

    • memory/1736-61-0x0000000000000000-mapping.dmp
    • memory/2036-68-0x0000000000000000-mapping.dmp