Analysis

  • max time kernel
    120s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    31-12-2023 00:53

General

  • Target

    224e8b219e855f118375d487e6ac15f0.exe

  • Size

    252KB

  • MD5

    224e8b219e855f118375d487e6ac15f0

  • SHA1

    02397f0e277508ce202d7f90b325c4ed7298eeb4

  • SHA256

    80d0de1de27f659bdc31d0aab393837167b348ff4029e354be394fb2b79ba371

  • SHA512

    c03b4714973936f93032e6cf5b50b12637c9a9d562221b9887b4f34c717ee03e49824dc1a2fe33d7b03c495255ab7ccb05c623807680230e8534d3cf6f1c7d4f

  • SSDEEP

    3072:nI7+8kQQHL+ueDVpsXMpI9B0p3DvsR2P4COdP0V9y40z4Ekz1eaMjAmectmqy3hb:4+8MHMt+9B0lvq2P4Lm9y1k1z1eRbpd

Malware Config

Extracted

Family

44caliber

C2

https://discordapp.com/api/webhooks/869635461541429258/hxEYazB2m_bqWOWdlnRrBOnLi8waabSchbnYiXPHDudSBlAEOry51hz3i902VgDh1LGm

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\224e8b219e855f118375d487e6ac15f0.exe
    "C:\Users\Admin\AppData\Local\Temp\224e8b219e855f118375d487e6ac15f0.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    270B

    MD5

    2669b0e6c856686b717eafb19686b69f

    SHA1

    f9ca0287fbd9a662ccef2c6caba46ca2366b4505

    SHA256

    a34e7e6c2edda0aca1e90a11639216f312f66bd574054802692549f6e05e6571

    SHA512

    22019d3981f82f2855987a694d5b57d983ff36ca969db6d396b5aae6c7e69cd6fda7ff0c5d703d9dd454b4057bbf1f00165410cf79ced7cf4f4592780204bbeb

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    397B

    MD5

    be4473e99aed6d7fb8e0f571ee2d2561

    SHA1

    0508924cbd7c35275353a6287292e6ccb38b6474

    SHA256

    58e644fe4e1f05859807ae143fe803815d2078d6b59477cc1b79ad89cabfa2f3

    SHA512

    39d6109c01743fb372bd830786b6bdd963eec3005859b3102c940e23eeb30447528606d48d55320ef377fadf4138bc89bd50d462b0eda60ee0d1311e503b2525

  • memory/1364-0-0x0000000000210000-0x0000000000256000-memory.dmp

    Filesize

    280KB

  • memory/1364-1-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

    Filesize

    9.9MB

  • memory/1364-2-0x000000001B360000-0x000000001B3E0000-memory.dmp

    Filesize

    512KB

  • memory/1364-63-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

    Filesize

    9.9MB