Analysis

  • max time kernel
    132s
  • max time network
    84s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 09:08

General

  • Target

    831bdafac182ed74305f9a612cd00cfec52a675c880e01a0cbad84e1e76a24cc.exe

  • Size

    4.9MB

  • MD5

    2b03146531dd5016ed68d30abf45ab58

  • SHA1

    28491f4ef4a236129522d2dcd582d9b1ecc0211c

  • SHA256

    831bdafac182ed74305f9a612cd00cfec52a675c880e01a0cbad84e1e76a24cc

  • SHA512

    7c853681ce07ed584510af9529007cda1c51252ddf166851d63cf07fa3d92a679ca2775e72b6d172c4f7b58ba7f1cb4e37b5a8263c26dc8a86bbbc99d4f876ea

  • SSDEEP

    98304:QT7ynCwGOC7Nf1+zWC+aOVP1YkXW3GzvFWYoDY+pIyDUoTPM+yMprj0hodPanLzy:0yCwGOYNf6WC+aOVtYh32vFRopdsMV0y

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 1 IoCs
  • Modifies data under HKEY_USERS 47 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\831bdafac182ed74305f9a612cd00cfec52a675c880e01a0cbad84e1e76a24cc.exe
    "C:\Users\Admin\AppData\Local\Temp\831bdafac182ed74305f9a612cd00cfec52a675c880e01a0cbad84e1e76a24cc.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "c:\progra~3\assist~1\AssistantSvc.dll",service -install
      2⤵
      • Loads dropped DLL
      PID:2040
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "c:\progra~3\assist~1\AssistantSvc.dll",service
    1⤵
    • Loads dropped DLL
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:108
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "c:\progra~3\assist~1\AssistantSvc.dll",service
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:1212

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\PROGRA~3\ASSIST~1\ASSIST~2.DLL

    Filesize

    4.2MB

    MD5

    72568eb5089b58b358473758e3f0ebfe

    SHA1

    135e3569852a727dc9bf87488605db9adbde0a03

    SHA256

    193f1b827ce2ffb536f567aaa466cf71cedeceb557a0b6ade63603ecb86e0c7b

    SHA512

    52201072a58f30e985374a4be6bf175d823091c7134ae03a3756d39cd3d58f90c42f25cde9f2120e0ade7ca2f500b529c4569f4e8868c6422273924612fc95ba

  • \??\c:\progra~3\assist~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \??\c:\progra~3\assist~1\assist~1.dll

    Filesize

    4.3MB

    MD5

    b32be388c4974d9b74f9782afeea865b

    SHA1

    18bb72942239e9453b1f1dd614626d875bcf3c04

    SHA256

    4d65a5a26eeaf00915659baed63e4cb0cae305b8a4c911730b476b2ededd3b8f

    SHA512

    cd66cfcafe690c0eb0eb184473f94f6020b127682323faad9983aedc2d75e7de3b3846d938ef6d05c5ba1d8041c3c85901b3cc4de381c98993eef89e055e71ea

  • \PROGRA~3\ASSIST~1\ASSIST~1.DLL

    Filesize

    4.3MB

    MD5

    b32be388c4974d9b74f9782afeea865b

    SHA1

    18bb72942239e9453b1f1dd614626d875bcf3c04

    SHA256

    4d65a5a26eeaf00915659baed63e4cb0cae305b8a4c911730b476b2ededd3b8f

    SHA512

    cd66cfcafe690c0eb0eb184473f94f6020b127682323faad9983aedc2d75e7de3b3846d938ef6d05c5ba1d8041c3c85901b3cc4de381c98993eef89e055e71ea

  • \PROGRA~3\ASSIST~1\ASSIST~2.DLL

    Filesize

    4.2MB

    MD5

    72568eb5089b58b358473758e3f0ebfe

    SHA1

    135e3569852a727dc9bf87488605db9adbde0a03

    SHA256

    193f1b827ce2ffb536f567aaa466cf71cedeceb557a0b6ade63603ecb86e0c7b

    SHA512

    52201072a58f30e985374a4be6bf175d823091c7134ae03a3756d39cd3d58f90c42f25cde9f2120e0ade7ca2f500b529c4569f4e8868c6422273924612fc95ba

  • \PROGRA~3\ASSIST~1\ASSIST~2.DLL

    Filesize

    4.2MB

    MD5

    72568eb5089b58b358473758e3f0ebfe

    SHA1

    135e3569852a727dc9bf87488605db9adbde0a03

    SHA256

    193f1b827ce2ffb536f567aaa466cf71cedeceb557a0b6ade63603ecb86e0c7b

    SHA512

    52201072a58f30e985374a4be6bf175d823091c7134ae03a3756d39cd3d58f90c42f25cde9f2120e0ade7ca2f500b529c4569f4e8868c6422273924612fc95ba

  • \PROGRA~3\ASSIST~1\ASSIST~2.DLL

    Filesize

    4.2MB

    MD5

    72568eb5089b58b358473758e3f0ebfe

    SHA1

    135e3569852a727dc9bf87488605db9adbde0a03

    SHA256

    193f1b827ce2ffb536f567aaa466cf71cedeceb557a0b6ade63603ecb86e0c7b

    SHA512

    52201072a58f30e985374a4be6bf175d823091c7134ae03a3756d39cd3d58f90c42f25cde9f2120e0ade7ca2f500b529c4569f4e8868c6422273924612fc95ba

  • \PROGRA~3\ASSIST~1\ASSIST~2.DLL

    Filesize

    4.2MB

    MD5

    72568eb5089b58b358473758e3f0ebfe

    SHA1

    135e3569852a727dc9bf87488605db9adbde0a03

    SHA256

    193f1b827ce2ffb536f567aaa466cf71cedeceb557a0b6ade63603ecb86e0c7b

    SHA512

    52201072a58f30e985374a4be6bf175d823091c7134ae03a3756d39cd3d58f90c42f25cde9f2120e0ade7ca2f500b529c4569f4e8868c6422273924612fc95ba

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \PROGRA~3\ASSIST~1\AssistantSvc.dll

    Filesize

    175KB

    MD5

    f93454d62071353c10f266641f838c7f

    SHA1

    5774ed0c0ea6bab4813e6c3502590ee4870df27b

    SHA256

    369c2641ff54603e21dd216f3e823aca15495a76f4e82f2b9f665b57d7d149b5

    SHA512

    22bb85068989b8bea056a68a740fb0fb0dc64e925b871b8a073a045a44bf5f78d90853b274f670b16f28d84725d6e7d3120b4256338fe07caa35f978f96cd399

  • \Users\Admin\AppData\Local\Temp\tf00294823.dll

    Filesize

    4.3MB

    MD5

    b32be388c4974d9b74f9782afeea865b

    SHA1

    18bb72942239e9453b1f1dd614626d875bcf3c04

    SHA256

    4d65a5a26eeaf00915659baed63e4cb0cae305b8a4c911730b476b2ededd3b8f

    SHA512

    cd66cfcafe690c0eb0eb184473f94f6020b127682323faad9983aedc2d75e7de3b3846d938ef6d05c5ba1d8041c3c85901b3cc4de381c98993eef89e055e71ea

  • memory/900-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

    Filesize

    8KB

  • memory/1212-65-0x0000000000000000-mapping.dmp

  • memory/2040-56-0x0000000000000000-mapping.dmp