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
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 10:03

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General

  • Target

    2024-04-28_4bc9ffb3e40815e89c46e511821a207b_bkransomware.exe

  • Size

    73KB

  • MD5

    4bc9ffb3e40815e89c46e511821a207b

  • SHA1

    7dba7735b3a9b3534187975c4fa9cb87d1f11412

  • SHA256

    ef2d13b1e43fdf1acd0237e797b43a88aef668c3160e054fb92cd8ae1dfb87ab

  • SHA512

    14ecd188c3d9d262fd04c5d18e47a40c73d7d8f96735bc1ab7da3cda0bb260924f1a0262753a214fb0532460912a96f59c1858f2bef217625bae32f035080ae2

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTWB:ZRpAyazIliazTm

Score
7/10
persistencespywarestealer

Malware Config

Signatures

  • Executes dropped EXE 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-28_4bc9ffb3e40815e89c46e511821a207b_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_4bc9ffb3e40815e89c46e511821a207b_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1720
    • 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:1664

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\cZ5Ej47JaAuEMEj.exe
    Filesize

    73KB

    MD5

    ba6c9d147c1977d28149d836fb93beaf

    SHA1

    5886012b118b32118661f107271aa0f1cc40b275

    SHA256

    43c82b39277efe186551944ae9f6efe3a4fd886c5cfddabc5c7fcb4a6eb17cff

    SHA512

    0930a4074260a3f0721c463f7b89c73ce37b05ce465bbcbba42bb99dfefb028dcd28a518b1a5fab4ea5ea8534739923b0856aa28f7f8b901c949b51d7385f6fe

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  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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