Analysis

  • max time kernel
    81s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2023 04:11

General

  • Target

    c7cdd3263f66f1399fb8334e6e3a5c87.exe

  • Size

    795KB

  • MD5

    c7cdd3263f66f1399fb8334e6e3a5c87

  • SHA1

    d82dbd4489672989f56c662bd39ef89cf4a4a1e7

  • SHA256

    842902a229af05a242d1c6a8db6ff66bd624a3326aa75c1600c13711eb029eb9

  • SHA512

    a435d277a7b6d6504c3be2e25644156723a7a3c34627a7298e825b5eb1d9fbf48ca31da7601e83cf9a6dfa977eb20d5af5b3f62fdaf3325e4242f3d7876e5d42

  • SSDEEP

    24576:gdoZ5Z9saIUk00C2ZHTjn080WgKy3SLUJFLH:gdoZ5ZYUk0K/080133qg7

Malware Config

Extracted

Family

cryptbot

C2

http://ernjxs12.top/gate.php

Attributes
  • payload_url

    http://ovaxlo01.top/chavez.dat

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7cdd3263f66f1399fb8334e6e3a5c87.exe
    "C:\Users\Admin\AppData\Local\Temp\c7cdd3263f66f1399fb8334e6e3a5c87.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Users\Admin\AppData\Local\Temp\c7cdd3263f66f1399fb8334e6e3a5c87.exe
      "C:\Users\Admin\AppData\Local\Temp\c7cdd3263f66f1399fb8334e6e3a5c87.exe"
      2⤵
      • Checks computer location settings
      • Maps connected drives based on registry
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3092
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\c7cdd3263f66f1399fb8334e6e3a5c87.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2168
        • C:\Windows\SysWOW64\timeout.exe
          timeout -t 5
          4⤵
          • Delays execution with timeout.exe
          PID:1244

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\8F4A.tmp
    Filesize

    32B

    MD5

    987fa44e8f2f322577a051e857d5b710

    SHA1

    d2979061a67d821dd5ea34175af95c2533a1ff29

    SHA256

    cc65477af5d0510692c50feaf90d4c089b7dbcf7d967c3a9d0213a7ae7444e15

    SHA512

    554ad7d00b0874bb4c53e817e2df5a068e4061e1fb67d51c57122919c41f047e9c73efab6ba6482e2479391a4277cf7872f1eb6b28012c732e5bdede3f782220

  • C:\Users\Admin\AppData\Local\Temp\9123.tmp
    Filesize

    71KB

    MD5

    46988a922937a39036d6b71e62d0f966

    SHA1

    4a997f2a0360274ec7990aac156870a5a7030665

    SHA256

    5954db23a8424f6cb1e933387d0866910c45615f54342aa0f6dd597174393de6

    SHA512

    dd7774668cd24c303e670e7d096794aca67593b8d8a9b3b38aa08c148f67e74c07041f25941465b3ae030bafd76384b4b79d41c1eeebe5bd11d94ab25ef00e9d

  • C:\Users\Admin\AppData\Local\Temp\9872.tmp
    Filesize

    2KB

    MD5

    18da5c19d469f921ff9d44f1f17de97b

    SHA1

    bef606053494e1f516431d40f2aca29cf1deeb20

    SHA256

    662f6389650db2471a13412664d05cfed46fef73dd1d30cf16d2c8ceeee33eb0

    SHA512

    9eee1b05c10544813c2eb89c48369d78e5b9260fddd8e90a34f06ac8ea2955860083c6c8ac31089276e97e269b87b4ac0c43e9dcdb7bd6091759dccb4ac0e71d

  • memory/3092-133-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3092-134-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3092-135-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3092-136-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3092-236-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3092-237-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB