Overview

overview

10

Static

static

ghjk.exe

windows7_x64

10

ghjk.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    174s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    26-06-2022 05:34

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General

  • Target

    ghjk.exe

  • Size

    772KB

  • MD5

    d946c183fd128b4acf88d83ee89d79d3

  • SHA1

    6f35da72f339c7101e93a7adada27d24902db598

  • SHA256

    529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474

  • SHA512

    793727b08b92df108144308a7ac798e55ba35742308db18466cce6caa564b6c1cb5b0fece2850511450f69e497df1dba49a9cb3a0ff17b4f9cc27e05ef2fcd62

Score
10/10
arkeirecordbreakerdefaultstealer

Malware Config

Extracted

Family

recordbreaker

C2

http://136.244.65.99/

http://140.82.52.55/

Extracted

Family

arkei

Botnet

Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

    stealerarkei
  • RecordBreaker

    RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.

    stealerrecordbreaker
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ghjk.exe
    "C:\Users\Admin\AppData\Local\Temp\ghjk.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4668
    • C:\Users\Admin\AppData\Roaming\fcvtee.exe
      "C:\Users\Admin\AppData\Roaming\fcvtee.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3140
      • C:\Users\Admin\AppData\Roaming\fcvtee.exe
        "C:\Users\Admin\AppData\Roaming\fcvtee.exe"
        3⤵
        • Executes dropped EXE
        PID:724
    • C:\Users\Admin\AppData\Local\Temp\ghjk.exe
      "C:\Users\Admin\AppData\Local\Temp\ghjk.exe"
      2⤵
        PID:4812

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\fcvtee.exe
      Filesize

      392KB

      MD5

      32ab5685131d8bcfa172bf165adf9338

      SHA1

      5e3b167bc66a15c246a8f29f7b634cbe52731319

      SHA256

      2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

      SHA512

      c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

      Download Submit
    • C:\Users\Admin\AppData\Roaming\fcvtee.exe
      Filesize

      392KB

      MD5

      32ab5685131d8bcfa172bf165adf9338

      SHA1

      5e3b167bc66a15c246a8f29f7b634cbe52731319

      SHA256

      2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

      SHA512

      c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

      Download Submit
    • C:\Users\Admin\AppData\Roaming\fcvtee.exe
      Filesize

      392KB

      MD5

      32ab5685131d8bcfa172bf165adf9338

      SHA1

      5e3b167bc66a15c246a8f29f7b634cbe52731319

      SHA256

      2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

      SHA512

      c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

      Download Submit
    • memory/724-140-0x0000000000000000-mapping.dmp
      Download
    • memory/724-143-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB

      Download
    • memory/724-144-0x0000000000400000-0x000000000043D000-memory.dmp
      Filesize

      244KB

      Download
    • memory/3140-132-0x0000000000000000-mapping.dmp
      Download
    • memory/3140-142-0x0000000000910000-0x0000000000916000-memory.dmp
      Filesize

      24KB

      Download
    • memory/4668-138-0x0000000002C10000-0x0000000002C18000-memory.dmp
      Filesize

      32KB

      Download
    • memory/4812-137-0x0000000000000000-mapping.dmp
      Download
    • memory/4812-139-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

      Download