Overview

overview

7

Static

static

3

2024-04-28...re.exe

windows7-x64

7

2024-04-28...re.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 04:41

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General

  • Target

    2024-04-28_7f102dcc7063016547c72dc7da74eacb_bkransomware.exe

  • Size

    170KB

  • MD5

    7f102dcc7063016547c72dc7da74eacb

  • SHA1

    212fbaa08c19ad7e33afeaac266e2e12adc744c8

  • SHA256

    dfbfab57a37980f721f3096a5ce5801ed8e428724c132aafd0d5f286c353d01e

  • SHA512

    62371e8629dc0d2f073836820413000918f9cfe1d0e999e13791aeb0f89dad1157b1687d81708b6ac97218b03f2a66ae9a4c598fbf1f3806defdc9b7f1ff490f

  • SSDEEP

    3072:ZRpAyazIliazTAVZqf6Ddvi+ImQj237MxsqHvhmCeWPaZuD4sPgjuzSDROQBp:xZ8azWY6Zqo7MxsY5eqD4qeQQv

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\2024-04-28_7f102dcc7063016547c72dc7da74eacb_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_7f102dcc7063016547c72dc7da74eacb_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:1740
    • C:\Users\Admin\AppData\Local\Temp\hKV3vaSqQkZLF2l.exe
      C:\Users\Admin\AppData\Local\Temp\hKV3vaSqQkZLF2l.exe
      2⤵
      • Executes dropped EXE
      PID:2236
    • 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:2572

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:\Users\Admin\AppData\Local\Temp\hKV3vaSqQkZLF2l.exe
    Filesize

    170KB

    MD5

    2aa6692a08b6d5b5e1dcd26b29d666d9

    SHA1

    e2872453df047432aaafce82e93724d6b144cbfd

    SHA256

    2560d01a6e5f4f96d85be0e89d22195dc72cec82fa619b8b1fb9675ee160cb15

    SHA512

    bc4ee0f66376c9533ec6cd04a39f1b042d317d049da041803a7c25526008ef46ad0bacf4b73b73c288a6c250b64dd9b68c870a2905660f5ae3aa0c660f3b17f7

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  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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  • \Users\Admin\AppData\Local\Temp\hKV3vaSqQkZLF2l.exe
    Filesize

    99KB

    MD5

    98eea111050b063ba63c6086ed7d4723

    SHA1

    25cd896907cc56e03af7e2704679fc4cee2b0ff9

    SHA256

    a8c0b8b5a892198aef71fa68d0a0eb88d3e8d5c541ad6a1ecf5baa0bc95fc403

    SHA512

    41fc40864664c15bd8d6b1414bee1b79933c8f5a71e67e872c47b185e60ecf7d003613bf44de6d68c70a86e7a59620be6afa90850228dc251c5f61c91d017cd0

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