Overview

overview

10

Static

static

10

Account bringer.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    1200s
  • max time network
    1200s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2024 20:46

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General

  • Target

    Account bringer.exe

  • Size

    37KB

  • MD5

    3cab82bd6de68242b990d5148df5f8d8

  • SHA1

    8fb73e69451431286a5fa1a87ea05d1a338e339a

  • SHA256

    2d3597e65ffbb0f3ba134e0bba9d8897488f9fee3a3c55090c19aafeb574a8e3

  • SHA512

    afbd8f6cde2212ff9ca45b9781dcf60c18478c2738cf0b86e9688d2ae16b78f1ee4dab7af19d7be9291fdb8851a33ec3388d301e248204d752968adc38ab30a9

  • SSDEEP

    384:l6RrDam6i/Cz3xAdjYWaSyFz1YXnC8W4LtDrAF+rMRTyN/0L+EcoinblneHQM3ec:cKaC6mNhFz1Yyd4ZrM+rMRa8NuhWt

Score
8/10
discoveryevasionpersistenceprivilege_escalation

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Account bringer.exe
    "C:\Users\Admin\AppData\Local\Temp\Account bringer.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:644
    • C:\ProgramData\COM Surrogate.exe
      "C:\ProgramData\COM Surrogate.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3004
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\COM Surrogate.exe" "COM Surrogate.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:4928
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM SecHealthUI.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\ProgramData\COM Surrogate.exe
    Filesize

    37KB

    MD5

    3cab82bd6de68242b990d5148df5f8d8

    SHA1

    8fb73e69451431286a5fa1a87ea05d1a338e339a

    SHA256

    2d3597e65ffbb0f3ba134e0bba9d8897488f9fee3a3c55090c19aafeb574a8e3

    SHA512

    afbd8f6cde2212ff9ca45b9781dcf60c18478c2738cf0b86e9688d2ae16b78f1ee4dab7af19d7be9291fdb8851a33ec3388d301e248204d752968adc38ab30a9

    Download Submit

  • memory/644-0-0x0000000074A42000-0x0000000074A43000-memory.dmp

    Filesize

    4KB

    Download

  • memory/644-1-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/644-2-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/644-12-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3004-14-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3004-15-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3004-13-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3004-25-0x0000000074A40000-0x0000000074FF1000-memory.dmp

    Filesize

    5.7MB

    Download