Analysis

  • max time kernel
    140s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    27-01-2021 14:30

General

  • Target

    New Order.exe

  • Size

    813KB

  • MD5

    3462afcbdb0969b7f24b42f0e42c7988

  • SHA1

    6429f37abdf26c93793eccdd8dc0ecaffb149655

  • SHA256

    112f430a8cc28d3889163bbaf9811c74c3d2af2c9af672d16f0f7888df6d51e2

  • SHA512

    4656f47988a96f6abb0e27d2c6a8bdfa69b41bc75a67b2c7d99ef45a4755e81450da02434ca2f7cc7a5441b99810dc90e372c74214ff723a3400b2aef3595029

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.pulpdant.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    pato1anita

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • 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.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New Order.exe
    "C:\Users\Admin\AppData\Local\Temp\New Order.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\veTETlsQyxlWT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDDF0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1112
    • C:\Users\Admin\AppData\Local\Temp\New Order.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:824

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpDDF0.tmp
    MD5

    cb725695d12c907eb82ccf466d0b87ee

    SHA1

    d94d1807d0909db740f2a6f369cfc6b373b68b33

    SHA256

    0a414163f8f75d988cbe03a78232ee4fca9a64fe71412ec4957ce4852d5416e4

    SHA512

    999b8468fc8fc50677065d188b72b8e1bb4515900aca7a443d33b9312fbba9921269e991f73ef183bf32f032f410eaae8e82cb72fff9091e102594c4e9816aed

  • memory/548-6-0x00000000002B0000-0x00000000002B4000-memory.dmp
    Filesize

    16KB

  • memory/548-5-0x0000000000F40000-0x0000000000F41000-memory.dmp
    Filesize

    4KB

  • memory/548-2-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/548-7-0x0000000000B60000-0x0000000000BB8000-memory.dmp
    Filesize

    352KB

  • memory/548-3-0x0000000001180000-0x0000000001181000-memory.dmp
    Filesize

    4KB

  • memory/824-10-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/824-11-0x00000000004375FE-mapping.dmp
  • memory/824-12-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/824-13-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/824-15-0x0000000001010000-0x0000000001011000-memory.dmp
    Filesize

    4KB

  • memory/824-16-0x0000000001011000-0x0000000001012000-memory.dmp
    Filesize

    4KB

  • memory/1112-8-0x0000000000000000-mapping.dmp