Analysis

  • max time kernel
    90s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 19:47

General

  • Target

    c0de110500a87b50750cf3ea04229493931ffc21794687fe23241ed192e708b0.exe

  • Size

    4.4MB

  • MD5

    0a99f67f4fd59e5d6625ee14e9d4a538

  • SHA1

    3dc951c5e6ddd3ba1427ce57ba505957838d779f

  • SHA256

    c0de110500a87b50750cf3ea04229493931ffc21794687fe23241ed192e708b0

  • SHA512

    0a395982e321d80137a6d4e1b9c22e2a0d578586d9715b47081af26ab8b697ed69f11c54ff92083b91e0b9f8e33ae8a36a12d6f7a35cbf1cbb6770899c587257

  • SSDEEP

    49152:eHkUtMlGbeCxKKjmxup4BdGKvghxfki11OCrZguQhZ8hpTQdsi:CmlGhcKLKcKWZg3Zspsds

Malware Config

Signatures

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

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

  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c0de110500a87b50750cf3ea04229493931ffc21794687fe23241ed192e708b0.exe
    "C:\Users\Admin\AppData\Local\Temp\c0de110500a87b50750cf3ea04229493931ffc21794687fe23241ed192e708b0.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:384
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:5020
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:5040

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Discovery

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.dat
    Filesize

    4KB

    MD5

    152e1101eb62402b39ff52b2b580c6f7

    SHA1

    bc1b539dbca0ca0d9d74e0f2da1d7fff3d9a5a94

    SHA256

    e851e6932f3a294906d74dbbd9f4ce4529c5ebed2ec1af761fb7f871b89057e2

    SHA512

    352f7ec779dd9f57dff25a2e033a2615160f5763cc4becdcbbb4ec4bfd5fea61c7fc23b265ddb3408b0019c707c6be71d1819213a7c6d4938d5fe79aa124d7f7

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • C:\Program Files (x86)\GoSave\OeZtCpnkLIsBuf.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/384-132-0x0000000003640000-0x0000000003709000-memory.dmp
    Filesize

    804KB

  • memory/5020-138-0x0000000000000000-mapping.dmp
  • memory/5040-141-0x0000000000000000-mapping.dmp