Analysis

  • max time kernel
    300s
  • max time network
    303s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    23-11-2021 04:56

General

  • Target

    9A118F214B5C3906A5A88D325FC36D8B.exe

  • Size

    4.0MB

  • MD5

    9a118f214b5c3906a5a88d325fc36d8b

  • SHA1

    962bca3f6acdb1d88274b4c61cfb1a987758c3a3

  • SHA256

    d736600bb69d2649cb7d8e7df884063266fb9d0ae97e284b038c80563e7df645

  • SHA512

    d3cdb66deb1fe9103b67ba7e53255623b9ee9188c87fd5bd0c44944028d5d54035ccd0886566f337e15785eb1c0410aaf8b2fe2c8f94b36174cb9eadabc23c8a

Malware Config

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9A118F214B5C3906A5A88D325FC36D8B.exe
    "C:\Users\Admin\AppData\Local\Temp\9A118F214B5C3906A5A88D325FC36D8B.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v dyuegvfscdjfkkhfg /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\dwrn.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v dyuegvfscdjfkkhfg /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\dwrn.exe"
        3⤵
        • Adds Run key to start application
        PID:1736
    • C:\Users\Admin\AppData\Roaming\dwrn.exe
      "C:\Users\Admin\AppData\Roaming\dwrn.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:880
      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
        "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1660

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • C:\Users\Admin\AppData\Roaming\dwrn.exe
    MD5

    9a118f214b5c3906a5a88d325fc36d8b

    SHA1

    962bca3f6acdb1d88274b4c61cfb1a987758c3a3

    SHA256

    d736600bb69d2649cb7d8e7df884063266fb9d0ae97e284b038c80563e7df645

    SHA512

    d3cdb66deb1fe9103b67ba7e53255623b9ee9188c87fd5bd0c44944028d5d54035ccd0886566f337e15785eb1c0410aaf8b2fe2c8f94b36174cb9eadabc23c8a

  • C:\Users\Admin\AppData\Roaming\dwrn.exe
    MD5

    9a118f214b5c3906a5a88d325fc36d8b

    SHA1

    962bca3f6acdb1d88274b4c61cfb1a987758c3a3

    SHA256

    d736600bb69d2649cb7d8e7df884063266fb9d0ae97e284b038c80563e7df645

    SHA512

    d3cdb66deb1fe9103b67ba7e53255623b9ee9188c87fd5bd0c44944028d5d54035ccd0886566f337e15785eb1c0410aaf8b2fe2c8f94b36174cb9eadabc23c8a

  • \Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • \Users\Admin\AppData\Roaming\dwrn.exe
    MD5

    9a118f214b5c3906a5a88d325fc36d8b

    SHA1

    962bca3f6acdb1d88274b4c61cfb1a987758c3a3

    SHA256

    d736600bb69d2649cb7d8e7df884063266fb9d0ae97e284b038c80563e7df645

    SHA512

    d3cdb66deb1fe9103b67ba7e53255623b9ee9188c87fd5bd0c44944028d5d54035ccd0886566f337e15785eb1c0410aaf8b2fe2c8f94b36174cb9eadabc23c8a

  • memory/880-75-0x0000000004F60000-0x0000000004F61000-memory.dmp
    Filesize

    4KB

  • memory/880-70-0x0000000001290000-0x0000000001291000-memory.dmp
    Filesize

    4KB

  • memory/880-67-0x0000000000000000-mapping.dmp
  • memory/1660-79-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1660-81-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1660-88-0x0000000002120000-0x0000000002121000-memory.dmp
    Filesize

    4KB

  • memory/1660-87-0x0000000076231000-0x0000000076233000-memory.dmp
    Filesize

    8KB

  • memory/1660-85-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1660-83-0x0000000000446A2E-mapping.dmp
  • memory/1660-78-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1660-82-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1660-80-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1736-63-0x0000000000000000-mapping.dmp
  • memory/1748-62-0x0000000000000000-mapping.dmp
  • memory/2004-60-0x0000000004CA0000-0x0000000004CA1000-memory.dmp
    Filesize

    4KB

  • memory/2004-55-0x00000000003C0000-0x00000000003C1000-memory.dmp
    Filesize

    4KB

  • memory/2004-58-0x00000000008F0000-0x00000000008F2000-memory.dmp
    Filesize

    8KB

  • memory/2004-57-0x00000000003A0000-0x00000000003AE000-memory.dmp
    Filesize

    56KB

  • memory/2004-59-0x00000000021A0000-0x00000000021A2000-memory.dmp
    Filesize

    8KB

  • memory/2004-65-0x0000000004CA1000-0x0000000004CA2000-memory.dmp
    Filesize

    4KB

  • memory/2004-61-0x00000000021B0000-0x00000000021B2000-memory.dmp
    Filesize

    8KB