Analysis

  • max time kernel
    60s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-09-2022 23:18

General

  • Target

    DOC20220929007______________________________________________________________________________________.exe

  • Size

    7KB

  • MD5

    3ff3e6792d8a9b2235c0e8a480744747

  • SHA1

    c698de49895254915dc2d3d31f87b4b693085664

  • SHA256

    d8852b94d342aa820e6acd3db2233af7783fd8da9952a823d5e82edf5b038f4d

  • SHA512

    564593ac3a31ca6bd08f142b231cb749b574b98518727ee9eebcdb27d7ed901c9562d46e1fb76f081a4d4ecb13212eff5f0a6f2c6712a75db53ae446afbcd49a

  • SSDEEP

    96:chO1eHUD+dk8AyqNXk6LKH4MIzlCRrfsRQ+yunKUUQpzNt:cE1HD+FMk6LKH4pzYxfV+yuKULL

Malware Config

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
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOC20220929007______________________________________________________________________________________.exe
    "C:\Users\Admin\AppData\Local\Temp\DOC20220929007______________________________________________________________________________________.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:768
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

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

  • memory/768-54-0x0000000000D80000-0x0000000000D88000-memory.dmp
    Filesize

    32KB

  • memory/768-55-0x0000000076871000-0x0000000076873000-memory.dmp
    Filesize

    8KB

  • memory/768-56-0x0000000005C00000-0x0000000005CB6000-memory.dmp
    Filesize

    728KB

  • memory/768-57-0x0000000005E40000-0x0000000005ED2000-memory.dmp
    Filesize

    584KB

  • memory/768-63-0x0000000004EE0000-0x0000000004F1A000-memory.dmp
    Filesize

    232KB

  • memory/1928-58-0x0000000000000000-mapping.dmp
  • memory/1928-60-0x000000006FB90000-0x000000007013B000-memory.dmp
    Filesize

    5.7MB

  • memory/1928-61-0x000000006FB90000-0x000000007013B000-memory.dmp
    Filesize

    5.7MB

  • memory/1928-62-0x000000006FB90000-0x000000007013B000-memory.dmp
    Filesize

    5.7MB