Overview

overview

10

Static

static

Sheet.......pdf.exe

windows7_x64

10

Sheet.......pdf.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    128s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:58

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General

  • Target

    Sheet.......pdf.exe

  • Size

    437KB

  • MD5

    ac621011571eca9bfcc83b3457e8bc4e

  • SHA1

    9979d2ac17eaaeb8c65457212cd0b8f25db24dc4

  • SHA256

    c4ccd023eed63b7c47c69e1b08e267f4579cc54e9998f3767d7c1438127b6d1a

  • SHA512

    86715884fc9ce924919b37ec820ebf57f8acf7ede3eadd4aa1af71da9d606bf8e3f41f33b2e958bd11826377a7ccdd94f1328235fb457a41041592e30500b783

Score
10/10
agentteslacollectionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Sheet.......pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Sheet.......pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1392
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hrZoEWJfRidjT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9E72.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2600
    • C:\Users\Admin\AppData\Local\Temp\Sheet.......pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3308

Network

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

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Sheet.......pdf.exe.log
    Filesize

    496B

    MD5

    cb76b18ebed3a9f05a14aed43d35fba6

    SHA1

    836a4b4e351846fca08b84149cb734cb59b8c0d6

    SHA256

    8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349

    SHA512

    7631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmp9E72.tmp
    Filesize

    1KB

    MD5

    05106614aadec497e560d468ca204083

    SHA1

    1a5bb798bd70796087f36e79941bfc17e8c47da9

    SHA256

    d5e10ec0a80b97548817aa6b469896f13b356ec4c4684fbfc8c1fc5f4fc45e70

    SHA512

    ed59678854ab5fe3c088cac234690ab8c9e14ddc23beac2703cee23de065d015edd8ad4acb83c5d99a9dd8ec14e4e101061088169ffe8bf2b3690be5d4cb00ad

    Download Submit
  • memory/1392-130-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2600-131-0x0000000000000000-mapping.dmp
    Download
  • memory/3308-133-0x0000000000000000-mapping.dmp
    Download
  • memory/3308-134-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

    Download
  • memory/3308-136-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

    Download