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Overview

overview

10

Static

static

7

3899f16e30...6c.exe

windows7-x64

10

3899f16e30...6c.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2024, 11:43

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General

  • Target

    3899f16e30129406a4a0858f6f16c66c.exe

  • Size

    63KB

  • MD5

    3899f16e30129406a4a0858f6f16c66c

  • SHA1

    2bac48457a15908d400c06f8dff0ccf87ec4fc7e

  • SHA256

    115e7f579b456e7ffe1b611eec0f1fc3223b1a564c230ccdae23eccaa5144c91

  • SHA512

    7b2aaff22d07394b8a07484c03be473e3f108d3245fee663e5d6990e5c510490e35592bd45906373043a452b2891e610dcc06f0fa5ac313342610298a68e0b02

  • SSDEEP

    1536:dv927G7dcJq4Ir36jXFEZbFo5q7NGf5EK8AMdjejx5bmWhnouy8km:V927gdcJ636jXFEZbRRdje9/Boutkm

Score
10/10
evasionpersistencespywarestealertrojanupx

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 18 IoCs
    evasion
  • Modifies security service 2 TTPs 1 IoCs
    evasion
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • UAC bypass 3 TTPs 3 IoCs
    evasiontrojan
  • Windows security bypass 2 TTPs 4 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Drops file in Drivers directory 1 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • UPX packed file 22 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Windows security modification 2 TTPs 15 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 14 IoCs
    adwarespyware
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
    stealer
  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • System policy modification 1 TTPs 4 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\3899f16e30129406a4a0858f6f16c66c.exe
    "C:\Users\Admin\AppData\Local\Temp\3899f16e30129406a4a0858f6f16c66c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3224
      • C:\Users\Admin\E696D64614\winlogon.exe
        "C:\Users\Admin\E696D64614\winlogon.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Sets file execution options in registry
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:4600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

3
T1562

Disable or Modify Tools

3
T1562.001

Modify Registry

12
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\E696D64614\winlogon.exe
    Filesize

    63KB

    MD5

    3899f16e30129406a4a0858f6f16c66c

    SHA1

    2bac48457a15908d400c06f8dff0ccf87ec4fc7e

    SHA256

    115e7f579b456e7ffe1b611eec0f1fc3223b1a564c230ccdae23eccaa5144c91

    SHA512

    7b2aaff22d07394b8a07484c03be473e3f108d3245fee663e5d6990e5c510490e35592bd45906373043a452b2891e610dcc06f0fa5ac313342610298a68e0b02

    Download Submit

  • memory/3224-37-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/3224-53-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/3224-47-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/3224-43-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/3224-25-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/4352-15-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/4352-0-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/4600-38-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-46-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-26-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-40-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-42-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-18-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-44-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-36-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-21-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-48-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-50-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-52-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-22-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/4600-56-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download