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
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 15:27

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General

  • Target

    2024-05-24_833bb40c2adc4c8e667bd4cb817fd567_bkransomware.exe

  • Size

    96KB

  • MD5

    833bb40c2adc4c8e667bd4cb817fd567

  • SHA1

    d5fa33c274fa8c2c543fad21b238dd99c263eb3a

  • SHA256

    25f8a420e5e1c4cbdb6b181b631beac5341f2d9efd51bcd1e78cc709f857bdd0

  • SHA512

    1c1f681e36f4d615c7e7e3b50dba7c58575f9f9c1d2da0c7449ce6f9bb41730c151912d9c770457da942bab8f71bed174954f17684026e53b0b7da316ecaf298

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTTOvlLSAlB:ZRpAyazIliazTT+SAn

Score
7/10
persistencespywarestealer

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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_833bb40c2adc4c8e667bd4cb817fd567_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_833bb40c2adc4c8e667bd4cb817fd567_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:1888
    • C:\Users\Admin\AppData\Local\Temp\oXvKsOn5Jb8OKFN.exe
      C:\Users\Admin\AppData\Local\Temp\oXvKsOn5Jb8OKFN.exe
      2⤵
      • Executes dropped EXE
      PID:2964
    • 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:2972

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\oXvKsOn5Jb8OKFN.exe
    Filesize

    96KB

    MD5

    0aa09264a1e1c3ac7c43f8083fac75d9

    SHA1

    4fe376d89b22715d25567e03d45ae74d7ea108a1

    SHA256

    be9a72bedcbeabf6fae9a6fdba7cf7640777b2b3395cbed80d6bbf98c599ba2b

    SHA512

    21932e8da61ce96c996f78cf70d9b07d28f5d745d6236306ad1a36668df27508d026a989afa28b89ce51b2ad6e7f0ad7a402d81b21f281c3a9b5254fbdfee123

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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\oXvKsOn5Jb8OKFN.exe
    Filesize

    25KB

    MD5

    abbd49c180a2f8703f6306d6fa731fdc

    SHA1

    d63f4bfe7f74936b2fbace803e3da6103fbf6586

    SHA256

    5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

    SHA512

    290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

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  • memory/2964-14-0x0000000000400000-0x000000000040D000-memory.dmp
    Filesize

    52KB

    Download