Analysis

  • max time kernel
    144s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    11-05-2021 14:05

General

  • Target

    DUE INVOICES.exe

  • Size

    958KB

  • MD5

    c3dd015c631875adfecc6c229b474cf4

  • SHA1

    26835d1df6761a455b6645fd27dba5dc7ed506b3

  • SHA256

    7299f2323910def53bb344e98441a66dba82b84b0d8ec89dbddf0ee6a936280a

  • SHA512

    dab1e8d81bcbf7a79aa454711a02c8f6cc39ce7aa07031a7891f57aba9f4bdb5a8d215436ff912a615954ace3d43a5d81e8fd01c08694585c4bbbf80967ecb4c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sat0rius.com
  • Port:
    587
  • Username:
    sahar.fuchs@sat0rius.com
  • Password:
    Almaseera_delta_0000

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • 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\DUE INVOICES.exe
    "C:\Users\Admin\AppData\Local\Temp\DUE INVOICES.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OOzsNXDsbStEu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88CF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:412
    • C:\Users\Admin\AppData\Local\Temp\DUE INVOICES.exe
      "C:\Users\Admin\AppData\Local\Temp\DUE INVOICES.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1888

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

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp88CF.tmp
    MD5

    218ce78e92d1c163a0b56e991fbee11a

    SHA1

    0d7bf4732da3aa86e33573632058f721d162deef

    SHA256

    c3b730474737186238d52f4a5d10cfb89997bb0eae8975fa56091c1c2a5f09d4

    SHA512

    68c593c36d56363f00e016b8335a493f68cf08c544599f1105b75accc6b303e5057e9837497c0a36f3d596aeeb700a439403792bdffb508aebbc9f1a3e709ab9

  • memory/412-65-0x0000000000000000-mapping.dmp
  • memory/1676-59-0x0000000000D90000-0x0000000000D91000-memory.dmp
    Filesize

    4KB

  • memory/1676-61-0x0000000000340000-0x0000000000341000-memory.dmp
    Filesize

    4KB

  • memory/1676-62-0x0000000000320000-0x0000000000324000-memory.dmp
    Filesize

    16KB

  • memory/1676-63-0x00000000051F0000-0x00000000052C8000-memory.dmp
    Filesize

    864KB

  • memory/1676-64-0x0000000007780000-0x000000000781F000-memory.dmp
    Filesize

    636KB

  • memory/1888-67-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1888-68-0x000000000043759E-mapping.dmp
  • memory/1888-69-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1888-71-0x0000000004500000-0x0000000004501000-memory.dmp
    Filesize

    4KB