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
    119s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 04:45

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General

  • Target

    2024-04-28_9774d1051af0bec3277a17bfb4561c85_bkransomware.exe

  • Size

    302KB

  • MD5

    9774d1051af0bec3277a17bfb4561c85

  • SHA1

    3dac3741c5eb8181ed799e0dc621f95928a3e8c2

  • SHA256

    b8cadf3cc959803f9e3b3493a101051c500371a00d8c116e0226bd6d072b7a4b

  • SHA512

    d553157b77e84be558ad48de2ca6cf6aa15222d6550e01b5772abb682ac1143b64f974bb97938237be4793fe2ac896ed169633bcaa6a65476c93a9e8b9394706

  • SSDEEP

    6144:hZMazqoZM4uelnkHv2N9LYdgf/rkgatYNFHyVlJ1ICS:hS0qoZMYnkH/6fYxOGVlfIZ

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_9774d1051af0bec3277a17bfb4561c85_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_9774d1051af0bec3277a17bfb4561c85_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:2460
    • C:\Users\Admin\AppData\Local\Temp\feFeMROvfc5ki6b.exe
      C:\Users\Admin\AppData\Local\Temp\feFeMROvfc5ki6b.exe
      2⤵
      • Executes dropped EXE
      PID:1764
    • 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:1736

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

    66df4ffab62e674af2e75b163563fc0b

    SHA1

    dec8a197312e41eeb3cfef01cb2a443f0205cd6e

    SHA256

    075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

    SHA512

    1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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  • \Users\Admin\AppData\Local\Temp\feFeMROvfc5ki6b.exe
    Filesize

    231KB

    MD5

    022538483dc9f54cdbdc48a16899526c

    SHA1

    9b372370c29d2cdc72328bc680633212c6aa47fb

    SHA256

    b9d7fe7dcde0e386122ae04b0ffd3bf9dc7216b031826cfc32f7c6609e3da72d

    SHA512

    a0979c8779da3cb76d4d490fd9675ceeb516bdc697d2c1138f7ed36197d0e71aa0b036c3460a306f386e7140d09ce5aaec82f1fbcfe3839fcda7413e3badceb5

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