Overview

overview

10

Static

static

WO-File.PDF.exe

windows7_x64

10

WO-File.PDF.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    4f0088a886aaa996f084420ba091b9e29f5df2096646b2f4bf8bfcec781397d6

  • Size

    378KB

  • Sample

    220521-djgmhafgd5

  • MD5

    df34f75b6401e6e2b31c86d920ec5efd

  • SHA1

    77dadc425d7651fefb9771e62e8d519d1091562c

  • SHA256

    4f0088a886aaa996f084420ba091b9e29f5df2096646b2f4bf8bfcec781397d6

  • SHA512

    43dbf207bcf7ea2093cab79988d308aed400eb24750c75e8dfa0173a0237d86858d9a62fa310c0048e6fb0011ce59cacefb8e36bc4f7c0f765aee441e76fb3a2

Score
10/10
agentteslacollectionevasionkeyloggerpersistencerezer0spywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    mail.pro-powersourcing.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    china1977

Targets

    • Target

      WO-File.PDF.exe

    • Size

      416KB

    • MD5

      20a70b9509a96449ec99e50fa5824fed

    • SHA1

      7bed798c0c3cf3f63271a9adb8a281c14dd9da6b

    • SHA256

      c87b319c28a538e76b2f86f21b68efa15581c90c727d36d4fd415a9d899e59dd

    • SHA512

      ba1f0feba08612a7ae6b41d6ee2dfa867508e347002dcb9250063d2103f6f5fb6f50602c717b223b82610b39f2965e8851fdf1eeeb02865a7fd49709bdba6c99

    Score
    10/10
    agentteslacollectionevasionkeyloggerpersistencerezer0spywarestealertrojan

    • AgentTesla

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

      keyloggertrojanstealerspywareagenttesla

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

      rezer0

    • Disables Task Manager via registry modification

      evasion

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Accesses Microsoft Outlook profiles

      collection

    • Adds Run key to start application

      persistence

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

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

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Tasks