Analysis

  • max time kernel
    143s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 16:28

General

  • Target

    fd44e58fef73d7ddf2897ce569189bc90dfbf5d2ccdb5b7197af8c755e502b1c.exe

  • Size

    4.3MB

  • MD5

    07ff8dee7df0af5140a9da00d160f1d8

  • SHA1

    e9d7166aa21be2ec65a33683efd4f3fb60fa9844

  • SHA256

    fd44e58fef73d7ddf2897ce569189bc90dfbf5d2ccdb5b7197af8c755e502b1c

  • SHA512

    f0a0a0c392e1b8fcd9810b47ae1a7fc38954e0d06292df3cf70cfd939973b6d3e69202e6e4e1710ab11fe858760619232c1d92c1fcebe3e5634275a40037d793

  • SSDEEP

    49152:tiOqoT5U2XC5Oarmxup4ddGKvghxfki1X9buOBqFyyoC3yE/Ac5mWxnmef:M25UdQaHKcPbuOBqFJoWNAxenl

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\fd44e58fef73d7ddf2897ce569189bc90dfbf5d2ccdb5b7197af8c755e502b1c.exe
    "C:\Users\Admin\AppData\Local\Temp\fd44e58fef73d7ddf2897ce569189bc90dfbf5d2ccdb5b7197af8c755e502b1c.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:660
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\cIejUKLDzQaXuz.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\cIejUKLDzQaXuz.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:820

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\cIejUKLDzQaXuz.dat
    Filesize

    4KB

    MD5

    d15132e42a669a2671e7cbc96b9500f7

    SHA1

    ea268f6f11ece5389039aaf538306186d6771fbe

    SHA256

    a6feccebced0cd5f67252423ecad1ff08c5abcb90bdfda3ba006b30064d22871

    SHA512

    15c3b79f678385913202759897f228475a36844b4f9278512508336e4d73697592daf4147459c37d2acc0fbb77455b5f9aeb5ec2e858f29af90278165e1d812b

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

    738KB

    MD5

    49961c7c9a7aef57f49adf50d1c810f6

    SHA1

    fc2078aeff5d5abee27c9e8a500cb2d6ae755b05

    SHA256

    c80abdc502d18db54137edc2680a498402c765999814b7fe1b2a7b69a64ce846

    SHA512

    8ad2c3dbd3b4390e4c49561f25ff2acdd4ab4468074e213f3efc81a598f71620e8f21fc87114623a6c0509997e47e1c4f5ffe703c7421ae313f7ba536df2772f

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

    3KB

    MD5

    e3ab22d8beac0180520ab5289a64419b

    SHA1

    1456ba2c78b293e5a80185fefdf05f5dbe424937

    SHA256

    0d3342857b67678dd76e6a24e137f0d75ba399bb48bf5095d7e4f7dfa0bbe416

    SHA512

    c04163026ffa1c6fab34b4fdbf23702148c7c2a31dd356d26f9541027db078b6433aff3a5f749a209a3acbcf3a853a9b5f77984540e21be1f823ce92bcbfc4bf

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

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

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

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

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

    872KB

    MD5

    337b97dbbcc7ad4d75fb5a90652e6de3

    SHA1

    50e50243af1819e62a7512d85e6dd67b8e1ed103

    SHA256

    b501a7a1e233ac26b0ba2fbbf54cbb782f98bc5484537e584fcbf4dcf5cc3f0c

    SHA512

    dab62835e885457c481d7ee4d76c1bc89278d5dc22178301629c78ad3215e1a4627a95f50b03587d8978e85cbba829f31acedf21c23773f5c526b0f76c8cf09e

  • memory/660-132-0x0000000002E20000-0x0000000002EE9000-memory.dmp
    Filesize

    804KB

  • memory/820-141-0x0000000000000000-mapping.dmp
  • memory/3236-138-0x0000000000000000-mapping.dmp