Analysis

  • max time kernel
    34s
  • max time network
    38s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 17:10

General

  • Target

    55c2d52e2aeb924d64a44590c1721e7e9246155da3a025bab577123042eba3e4.exe

  • Size

    3.3MB

  • MD5

    09040c6541c7ee566a9d6293af4e2f7f

  • SHA1

    72ec1083d0a3e1f912189b631ad9614866904306

  • SHA256

    55c2d52e2aeb924d64a44590c1721e7e9246155da3a025bab577123042eba3e4

  • SHA512

    abfcab61da064e78d0cd598e2d2fe7d2238f48c53cdb0d99df1457bee211505ee5156e4bec38fe342b894d1a29fe42f10a7f43f7a2319ffb7555f8c530c79f89

  • SSDEEP

    49152:DVZ5PUYt3FkqlNJNBjJAIQC/tbFXAq6JE8i6PR2M+yNfcRZp5:DVvtJjNRYE8XfV

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 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.

  • Drops Chrome extension 3 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 8 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 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55c2d52e2aeb924d64a44590c1721e7e9246155da3a025bab577123042eba3e4.exe
    "C:\Users\Admin\AppData\Local\Temp\55c2d52e2aeb924d64a44590c1721e7e9246155da3a025bab577123042eba3e4.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Installs/modifies Browser Helper Object
    • 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
    • System policy modification
    PID:1224
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GOSSave\bLCah71IRamlGV.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GOSSave\bLCah71IRamlGV.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:992

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GOSSave\bLCah71IRamlGV.dat

    Filesize

    5KB

    MD5

    7c6259f21f388ed9381045fa0f74ca8c

    SHA1

    a25c2eebb5060df4075bda0f79d0d4dad9b78153

    SHA256

    c0f536b416f411da3cfc4ffba203121030bd548c1ee271d20a4ba10e486bd487

    SHA512

    97a5ec551c70c25d74cbf37d3ad9616f703809c783711882bebfe984db10f22f84648d9843f5dd585fa3a970a3308b0446c84589e679035b49a740d8bdb1bca0

  • C:\Program Files (x86)\GOSSave\bLCah71IRamlGV.tlb

    Filesize

    3KB

    MD5

    52866228bb7539656bd8281c08fb2261

    SHA1

    4c1b05dce1486823ae3cfeb3da9c4160a2cd87da

    SHA256

    39cc8a6f65f31290fc5178640328a256432a6c5e85476394f7258e30a2422570

    SHA512

    0eb408b1aa33c9ae50e75c72ffad12f88251dc1420ea3eb13b581e127f5ebaa5e350b4f65d67040f23923d4ce66ddadf594188bf05ae96d41ffbd59ff3e27715

  • C:\Program Files (x86)\GOSSave\bLCah71IRamlGV.x64.dll

    Filesize

    693KB

    MD5

    c9dddde71dbaa1cef628bb002eed6b70

    SHA1

    6f51e6d4640545a95b7830db997d9ed52a34c09f

    SHA256

    86c41c24b11fbd48135b5de608b93ff79ab370b674f50777453ef9ea550d6159

    SHA512

    15c5ace4a80c2f58b51a29977ec1ff62a5a988a4b24f5d75a4dee9bc15c9cd8abd39e7df120fc5f3cc86c9e8e97a855ae883385b8e483da46edb56d3fcff7720

  • \Program Files (x86)\GOSSave\bLCah71IRamlGV.dll

    Filesize

    613KB

    MD5

    748d9cd3bdc752d12f45cf798eac8de5

    SHA1

    fd30cc69cb173920c1162a367459ee3756060b10

    SHA256

    fb5985728d426dd6004f2e7ee843bffa843ca9dadd72e270e120f1224d9590b6

    SHA512

    4b2f6cba07887294c9adf53d651127f23bad949ab3162933877b96dcd9c01160f5457c617f9d487f13b284eae6a4726bd808e02c779cd8d3b0149950c9e955ed

  • \Program Files (x86)\GOSSave\bLCah71IRamlGV.x64.dll

    Filesize

    693KB

    MD5

    c9dddde71dbaa1cef628bb002eed6b70

    SHA1

    6f51e6d4640545a95b7830db997d9ed52a34c09f

    SHA256

    86c41c24b11fbd48135b5de608b93ff79ab370b674f50777453ef9ea550d6159

    SHA512

    15c5ace4a80c2f58b51a29977ec1ff62a5a988a4b24f5d75a4dee9bc15c9cd8abd39e7df120fc5f3cc86c9e8e97a855ae883385b8e483da46edb56d3fcff7720

  • \Program Files (x86)\GOSSave\bLCah71IRamlGV.x64.dll

    Filesize

    693KB

    MD5

    c9dddde71dbaa1cef628bb002eed6b70

    SHA1

    6f51e6d4640545a95b7830db997d9ed52a34c09f

    SHA256

    86c41c24b11fbd48135b5de608b93ff79ab370b674f50777453ef9ea550d6159

    SHA512

    15c5ace4a80c2f58b51a29977ec1ff62a5a988a4b24f5d75a4dee9bc15c9cd8abd39e7df120fc5f3cc86c9e8e97a855ae883385b8e483da46edb56d3fcff7720

  • memory/992-84-0x000007FEFC2E1000-0x000007FEFC2E3000-memory.dmp

    Filesize

    8KB

  • memory/992-83-0x0000000000000000-mapping.dmp

  • memory/1156-79-0x0000000000000000-mapping.dmp

  • memory/1224-65-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-76-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-69-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-70-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-71-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-72-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-73-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-74-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-75-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-68-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-77-0x00000000003E6000-0x00000000003E9000-memory.dmp

    Filesize

    12KB

  • memory/1224-67-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-66-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

    Filesize

    8KB

  • memory/1224-64-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-63-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-62-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-61-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-60-0x00000000003E2000-0x00000000003E6000-memory.dmp

    Filesize

    16KB

  • memory/1224-55-0x0000000000CA0000-0x0000000000D46000-memory.dmp

    Filesize

    664KB