Analysis

  • max time kernel
    49s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12-08-2022 17:01

General

  • Target

    Proforma Invoice No. 00345 Dtd. 12.11.2022.pdf.exe

  • Size

    862KB

  • MD5

    1a6f63574e2e09dae22a49c8f39227f3

  • SHA1

    70e101fd885b9d041d0fdbe1f19ffd9becc4dd2c

  • SHA256

    7942a73de4742a8b5e282888492639e7070a36f979b22c1af3a0db0ff942a402

  • SHA512

    0c17fc82e22477f71b3cb8e7789d6d8b2a7a3bb5e6a5a12a783d2769b56eb885eaf2fc265c72b7da8cf98a0fa7ea76f117bdda3f636ff370ffdf486482ba7229

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    doublegrace50@yandex.com
  • Password:
    chukwuma22

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    doublegrace50@yandex.com
  • Password:
    chukwuma22

Signatures

  • AgentTesla

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No. 00345 Dtd. 12.11.2022.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No. 00345 Dtd. 12.11.2022.pdf.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sQbuiQXrRFHqh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5774.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1756
    • C:\Users\Admin\AppData\Local\Temp\Proforma Invoice No. 00345 Dtd. 12.11.2022.pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5774.tmp
    Filesize

    1KB

    MD5

    b7f96136ec865565a01505c13cb18abd

    SHA1

    9038f560e1f399f3f04d6c4d3de40724b51af83f

    SHA256

    c14fa7b65f4f2e5881343d7cd74178ec8fe9dbbc659a3f1b7b04d3d456ee53bd

    SHA512

    f01071fce0e05a45210806d25e40fa5e8541c33575825a247a02daddfa32076e496cef48d8db459c676605dc537b4a923c96932b3e04b2f498bd33a7f7529311

  • memory/288-57-0x00000000051B0000-0x000000000522A000-memory.dmp
    Filesize

    488KB

  • memory/288-56-0x0000000000370000-0x000000000037A000-memory.dmp
    Filesize

    40KB

  • memory/288-54-0x00000000008E0000-0x00000000009BE000-memory.dmp
    Filesize

    888KB

  • memory/288-58-0x00000000007F0000-0x000000000082A000-memory.dmp
    Filesize

    232KB

  • memory/288-55-0x0000000075B11000-0x0000000075B13000-memory.dmp
    Filesize

    8KB

  • memory/1756-59-0x0000000000000000-mapping.dmp
  • memory/1800-62-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-61-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-65-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-64-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-66-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-67-0x0000000000435B7E-mapping.dmp
  • memory/1800-69-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1800-71-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB