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
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 05:26

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General

  • Target

    2024-04-28_31399e198b2142c8720172842e3af5b8_bkransomware.exe

  • Size

    2.2MB

  • MD5

    31399e198b2142c8720172842e3af5b8

  • SHA1

    84e8a94e6b4595bc72b213b0fcb28f5675186118

  • SHA256

    4fd90ae17a33d64776141defd5f10af0d7a20af1ab087e179b6447120f786460

  • SHA512

    99298abd14eafd1c546108976bf21276401ba37d7e95f8ba035f496b1be9104d597358ed18d0ea57bd7db392265a7ef13642c4a1b8f7264a5ceceb3ed500e337

  • SSDEEP

    49152:DJKRJh28dl5VzMrSzR3zibwbCTYehyLDvarb3:DJabl5TzRjiZTci

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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-28_31399e198b2142c8720172842e3af5b8_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_31399e198b2142c8720172842e3af5b8_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:2152
    • C:\Users\Admin\AppData\Local\Temp\UhLe81X4F6yFO1j.exe
      C:\Users\Admin\AppData\Local\Temp\UhLe81X4F6yFO1j.exe
      2⤵
      • Executes dropped EXE
      PID:1632
    • 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:1696

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\UhLe81X4F6yFO1j.exe
    Filesize

    2.2MB

    MD5

    2454638c5a52eba50a7abcc18ae211cf

    SHA1

    42a14acafe789e346c03875eef2b04bb349b860c

    SHA256

    5fc8fe47bc90dcf94ae82ff83330f488215cf8b1b2b90d8a235d747cc1a4d92c

    SHA512

    cbdf1c0f40dfbd9f38b93d90dad38e1a26161aac923d76c267cd0e42910bbc21721b2dcd1bcd4faa04ef16069fe09d27eade1ecf2d6f8c27a6ac01e0b7261b05

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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\UhLe81X4F6yFO1j.exe
    Filesize

    2.2MB

    MD5

    20ea602903cfbe6a29f3de5195dd968d

    SHA1

    71f7832da8f4ee21dcc25685b78a58517119c394

    SHA256

    3c1fa2c7cc8b895612265cfd3cc19cd44ffd0f26cdbb6ab6cd14ec34b0b5c736

    SHA512

    2ad7c78446ec40d10b4a3a91fd3064f7092ff494d006752b911e5e79f0a5eea2849d39774bf73e2ad8ae7b1135f08f0b755d47bbb4a724b15756f4138158a337

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