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
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 19:23

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General

  • Target

    2024-05-24_f89c5acd1f23aa06926607dbe085c751_bkransomware.exe

  • Size

    74KB

  • MD5

    f89c5acd1f23aa06926607dbe085c751

  • SHA1

    182f4749dbe3f93a84e4c255dd0c69ad639286b0

  • SHA256

    103a03c646a5e74b2a494dbf2e8467b669df1a98eed7a45ccae53b2f3c6f9e34

  • SHA512

    05852aeb0d914bbb2ceacf657d04a433edcc7fd916b56e97030d1811006c67eb6809c5b3bf287b4c52a6e1e70645251359e497b8923e82f95d003cc9f2f36339

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTP9Zid:ZRpAyazIliazTVQd

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\2024-05-24_f89c5acd1f23aa06926607dbe085c751_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_f89c5acd1f23aa06926607dbe085c751_bkransomware.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2088
    • 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:2004

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\YjNQRPCLyeJRHsf.exe
    Filesize

    74KB

    MD5

    e450de58cd248f02550bac75bf181983

    SHA1

    a1f8507224a69bca891d30d3ed5cfb01c4b0d36a

    SHA256

    bba811f47eb15a4a85b09d25526cb83bfa9e0f70ef27409e1e83a67d693be4ea

    SHA512

    16a3b8d619871db1d2ef3603b97efa95818e9a91497734c2a4138e6ab168ea2fd13b235250c71547b16e8880340ef8ee824f3de0bb0c76cd9ed63f60a7afd6e5

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  • C:\Windows\CTS.exe
    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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