Analysis

  • max time kernel
    44s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 20:49

General

  • Target

    add23eb2cf257e76a057d4c02debb98dc54d4a1ee5dd303d90526d98d1cf4bcc.exe

  • Size

    4.3MB

  • MD5

    e174e0433b5e28b14b28f1005b008d0a

  • SHA1

    3b1049c3c2d6a79390a760de9cc078a19340e985

  • SHA256

    add23eb2cf257e76a057d4c02debb98dc54d4a1ee5dd303d90526d98d1cf4bcc

  • SHA512

    e27c6687fa042ea85d770d43136584829c29339e11b93bf713a0dc3ffabc33746baaa287d6d4fc3a5587dbe988608efe28f7601b11150032320a51d0817ff2be

  • SSDEEP

    49152:8iOqoT5U2XC5Oarmxup4UdGKvghxfki14c7SKryoC3yE/Ac5mWxnm1f:n25UdQaqKc37SK+oWNAxen+

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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\add23eb2cf257e76a057d4c02debb98dc54d4a1ee5dd303d90526d98d1cf4bcc.exe
    "C:\Users\Admin\AppData\Local\Temp\add23eb2cf257e76a057d4c02debb98dc54d4a1ee5dd303d90526d98d1cf4bcc.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:1200
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\bO0qADxzJIYjR8.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\bO0qADxzJIYjR8.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1300

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\bO0qADxzJIYjR8.dat
    Filesize

    4KB

    MD5

    e7f30d5e555a504046f911658ad92b65

    SHA1

    835194ddaad940b754516b5b2bf3b580f43fe500

    SHA256

    940a168d8035da0e51dadf9a64ab94bae8f3a4b478f35d2ed122f04c102e2835

    SHA512

    efb078b9a0ed5f4cbd58e1b35e85b4ff7dc70c00ac9946e2b1f052deae810374ae214001eaeb21222da36850496da11e0aff99cb1a5a620fb12356e893070264

  • C:\Program Files (x86)\GoSave\bO0qADxzJIYjR8.tlb
    Filesize

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

  • C:\Program Files (x86)\GoSave\bO0qADxzJIYjR8.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\bO0qADxzJIYjR8.dll
    Filesize

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

  • \Program Files (x86)\GoSave\bO0qADxzJIYjR8.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • \Program Files (x86)\GoSave\bO0qADxzJIYjR8.x64.dll
    Filesize

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/1200-54-0x0000000075AC1000-0x0000000075AC3000-memory.dmp
    Filesize

    8KB

  • memory/1200-55-0x0000000000910000-0x00000000009D9000-memory.dmp
    Filesize

    804KB

  • memory/1300-65-0x0000000000000000-mapping.dmp
  • memory/1300-66-0x000007FEFC001000-0x000007FEFC003000-memory.dmp
    Filesize

    8KB

  • memory/2008-61-0x0000000000000000-mapping.dmp