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
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 03:49

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General

  • Target

    2024-05-24_bc47de6ab74e6387e377739470834afd_bkransomware.exe

  • Size

    159KB

  • MD5

    bc47de6ab74e6387e377739470834afd

  • SHA1

    ec1479f70b13eb235d8869011e557117b677b632

  • SHA256

    e60cdbbcd0091ce0450e45af1021f0eadf75dca1e66c7dc02dbf5cfe3965481e

  • SHA512

    ef71ca6edfd6dd04383c6e449ff4cca0dad8f15206272974bdd7583abbb9eeb965ea2ff398fa5f2bc3c88c0b27b4752f742719a73740fb4bebbc53dc38290ef5

  • SSDEEP

    3072:ZhpAyazIlyazTZklTPyhvZIxtuyjgW2YftbvN6WyqWri:hZMaztOuhCWfW2sbvei

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_bc47de6ab74e6387e377739470834afd_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_bc47de6ab74e6387e377739470834afd_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:2172
    • C:\Users\Admin\AppData\Local\Temp\ehREEi3NqoVCIVi.exe
      C:\Users\Admin\AppData\Local\Temp\ehREEi3NqoVCIVi.exe
      2⤵
      • Executes dropped EXE
      PID:1532
    • 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:2276

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\ehREEi3NqoVCIVi.exe
    Filesize

    88KB

    MD5

    4a895ec6c5a9df94820219ef525cf65a

    SHA1

    525dd15cdeec20966d61c5f0a81667cd931349cb

    SHA256

    949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

    SHA512

    a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

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  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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