Overview

overview

7

Static

static

3

2024-05-24...re.exe

windows7-x64

7

2024-05-24...re.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 15:00

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General

  • Target

    2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe

  • Size

    170KB

  • MD5

    c92a370bc94c4d642f649dfe6712c878

  • SHA1

    50f45776b643273c2ce12c11fd8d92342ec1aaef

  • SHA256

    d4b183dc2599f0a475ffabfbe73e12dbee5645181cec1be8056e97edcba896e0

  • SHA512

    500afe0979a77a66a3824a0b60c70400321e1eaecd2a45e111f61165ebba8f4e57db609e16356cf35af6e176feee3f2d5ba5029cd8b078bb537f79524a06870a

  • SSDEEP

    3072:ZRpAyazIliazTyqy/P+/TCuhgem68WdoKignDGb4ZbRD0hksJe9rcTj:xZ8azLy/PKTf78WdoEGEZbRDhsgc/

Score
7/10
persistencespywarestealer

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Users\Admin\AppData\Local\Temp\k339xsyREH47nik.exe
      C:\Users\Admin\AppData\Local\Temp\k339xsyREH47nik.exe
      2⤵
      • Executes dropped EXE
      PID:300
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:1972

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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  • \Users\Admin\AppData\Local\Temp\k339xsyREH47nik.exe
    Filesize

    99KB

    MD5

    af88cab288e8213a11a7ea5313363d31

    SHA1

    cb769e3246d5244a0040621e919f7c519ba49986

    SHA256

    7407fac6e170430f34322202b73aa392431b5c2c49e15304fb255bb24c540366

    SHA512

    a4e353fcb78579345d4c5bc1f48970b473e0499dfe5bc6abeffb669295fa2940ce8637045a11f881fe88dd9b97d380ae9a8eed1b94fbd47181e0b4eb427e9679

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