Analysis

  • max time kernel
    60s
  • max time network
    59s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2023 12:08

General

  • Target

    5190672.exe

  • Size

    658KB

  • MD5

    131fc2043b4c740cb1a3bd4a8398a780

  • SHA1

    041be9bfdbed62d56906f5fe2ebdad0f1f7037d5

  • SHA256

    191529d733524665838e0d27b44844ca0a3c914d8577d4f2d8c8b93ea4a7729a

  • SHA512

    e2f5bd59a57b4a47756643e8395d9b8bdf2d1b02e3f4eb20409195027d7921e7614153b93efda90daa00e31cfd72f4f1e26774121d90b3995e681463c69af31c

  • SSDEEP

    12288:74DM4ky4LFhqvVeACFUYvHoIlC/BEzOCHHwaMgUa3EKrgXcsznauIimOMt+k:7Zy4LFyefHNlw+zOCnwapHrcPnbIimX

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5190672.exe
    "C:\Users\Admin\AppData\Local\Temp\5190672.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PQCrUHKoqi.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1212
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PQCrUHKoqi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC331.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:532
    • C:\Users\Admin\AppData\Local\Temp\5190672.exe
      "C:\Users\Admin\AppData\Local\Temp\5190672.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1456

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC331.tmp
    Filesize

    1KB

    MD5

    dc5a89437387892cdb13a18cef10d4b6

    SHA1

    0f2ce842418594cf9331438492c50918b194a4de

    SHA256

    1171e55b49ce910f4956e2e53913eeee5dc9979c558562b9351e2985a0655a30

    SHA512

    8e462b730f4a6ebac4f7eddf12896c9a87897ab158a1cc57fe05e02daf64d689af271b9efd4ff3b906f310e1a11b983305038a47d7f2194ec450ef7ae49246e6

  • memory/1212-80-0x0000000002620000-0x0000000002660000-memory.dmp
    Filesize

    256KB

  • memory/1212-79-0x0000000002620000-0x0000000002660000-memory.dmp
    Filesize

    256KB

  • memory/1372-54-0x0000000000C40000-0x0000000000CEA000-memory.dmp
    Filesize

    680KB

  • memory/1372-55-0x00000000005E0000-0x00000000005EE000-memory.dmp
    Filesize

    56KB

  • memory/1372-56-0x00000000043B0000-0x00000000043F0000-memory.dmp
    Filesize

    256KB

  • memory/1372-57-0x00000000043B0000-0x00000000043F0000-memory.dmp
    Filesize

    256KB

  • memory/1372-58-0x0000000000600000-0x000000000060C000-memory.dmp
    Filesize

    48KB

  • memory/1372-59-0x00000000050E0000-0x0000000005158000-memory.dmp
    Filesize

    480KB

  • memory/1372-65-0x0000000004530000-0x0000000004562000-memory.dmp
    Filesize

    200KB

  • memory/1456-69-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-71-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-72-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/1456-73-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-75-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-77-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-78-0x0000000004B70000-0x0000000004BB0000-memory.dmp
    Filesize

    256KB

  • memory/1456-70-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-68-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1456-99-0x0000000004B70000-0x0000000004BB0000-memory.dmp
    Filesize

    256KB