Analysis

  • max time kernel
    135s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27-07-2021 15:14

General

  • Target

    fa322b962d854050adb6c6546f7aaed5.exe

  • Size

    684KB

  • MD5

    fa322b962d854050adb6c6546f7aaed5

  • SHA1

    b1c7f9e0cf2d4c99175bc38fb4d12d34858e5bea

  • SHA256

    cd043324499b97f0bfcd00d02c0a094aa6d8f4b33f5cd80d94ebf92445f8dc02

  • SHA512

    0a128ee744ed52a9a58ea2136b09e18b90f856a19ee4608ac995a49ecee807c7ff3f8a8f2bd0d313d79e43e7cf4ea14aa33f4e2bcfd540e8bd28043633ff4b9d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    dutchgardenfoodservices@saleperson.icu
  • Password:
    GOODGOD1234

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa322b962d854050adb6c6546f7aaed5.exe
    "C:\Users\Admin\AppData\Local\Temp\fa322b962d854050adb6c6546f7aaed5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OCdOwh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEF4E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:108
    • C:\Users\Admin\AppData\Local\Temp\fa322b962d854050adb6c6546f7aaed5.exe
      "C:\Users\Admin\AppData\Local\Temp\fa322b962d854050adb6c6546f7aaed5.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1828

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpEF4E.tmp
    MD5

    61aebf6352dc6dc03646af96b50228eb

    SHA1

    f470549b728c7d4895fe811013b4627b56177fc1

    SHA256

    704b4ef842d998796d8996b44f1aec31b90234ac9ad2aa2556b848d7d473a8c7

    SHA512

    05a26393a068b2b90c87d543e382f62105ce22939e75005333e353a77f0042550b52b9ca673552915f69bf54ac45d726c5fec5209dd20483270ec34493405e83

  • memory/108-65-0x0000000000000000-mapping.dmp
  • memory/1828-68-0x00000000004374AE-mapping.dmp
  • memory/1828-67-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1828-69-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1828-71-0x0000000000650000-0x0000000000651000-memory.dmp
    Filesize

    4KB

  • memory/1944-59-0x0000000000AD0000-0x0000000000AD1000-memory.dmp
    Filesize

    4KB

  • memory/1944-61-0x0000000004DB0000-0x0000000004DB1000-memory.dmp
    Filesize

    4KB

  • memory/1944-62-0x0000000000240000-0x000000000024B000-memory.dmp
    Filesize

    44KB

  • memory/1944-63-0x0000000005A00000-0x0000000005A82000-memory.dmp
    Filesize

    520KB

  • memory/1944-64-0x0000000000660000-0x000000000069D000-memory.dmp
    Filesize

    244KB