Overview

overview

10

Static

static

bf718c38ce...27.exe

windows7_x64

10

bf718c38ce...27.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    154s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 07:36

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General

  • Target

    bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe

  • Size

    518KB

  • MD5

    b3196f0ab1e0eeab4218b1626b796d10

  • SHA1

    81fc429e08a7e6b4b06010a89305facf0acaef48

  • SHA256

    bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

  • SHA512

    f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

Score
8/10
persistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe
    "C:\Users\Admin\AppData\Local\Temp\bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:4200
    • C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
      "C:\Users\Admin\AppData\Local\Temp\systemupdate.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4280

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
    Filesize

    518KB

    MD5

    b3196f0ab1e0eeab4218b1626b796d10

    SHA1

    81fc429e08a7e6b4b06010a89305facf0acaef48

    SHA256

    bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

    SHA512

    f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
    Filesize

    518KB

    MD5

    b3196f0ab1e0eeab4218b1626b796d10

    SHA1

    81fc429e08a7e6b4b06010a89305facf0acaef48

    SHA256

    bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

    SHA512

    f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

    Download Submit
  • memory/4200-130-0x0000000000740000-0x00000000007C8000-memory.dmp
    Filesize

    544KB

    Download
  • memory/4200-131-0x00000000098C0000-0x000000000995C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/4200-132-0x0000000005C00000-0x00000000061A4000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/4200-133-0x0000000005780000-0x0000000005812000-memory.dmp
    Filesize

    584KB

    Download
  • memory/4280-134-0x0000000000000000-mapping.dmp
    Download
  • memory/4280-137-0x0000000005500000-0x000000000550A000-memory.dmp
    Filesize

    40KB

    Download