Analysis

  • max time kernel
    161s
  • max time network
    161s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    15/12/2021, 02:23

General

  • Target
    cd2f5c374cf74fcfa938eb4235f2e24f.exe
  • Size 172KB
  • Sample211215-ct5xeahfbj
  • SHA256 bb27a6c8335367f37f668297c04172fe0e12ed2b7f52da1750de8fa1d8a48ff8
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://rcacademy.at/upload/

  • http://e-lanpengeonline.com/upload/

  • http://vjcmvz.cn/upload/

  • http://galala.ru/upload/

  • http://witra.ru/upload/

rc4.i32
rc4.i32

Extracted

Family
  • redline

Botnet
  • 1

C2
  • 195.133.47.114:38127

Extracted

Family
  • redline

Botnet
  • 11

C2
  • 45.9.20.157:46257

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • 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.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cd2f5c374cf74fcfa938eb4235f2e24f.exe
    "C:\Users\Admin\AppData\Local\Temp\cd2f5c374cf74fcfa938eb4235f2e24f.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3744
  • C:\Users\Admin\AppData\Local\Temp\9D74.exe
    C:\Users\Admin\AppData\Local\Temp\9D74.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3488
  • C:\Users\Admin\AppData\Local\Temp\B24.exe
    C:\Users\Admin\AppData\Local\Temp\B24.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4076

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/3016-121-0x0000000000B60000-0x0000000000B76000-memory.dmp

        memory/3488-135-0x0000000005950000-0x0000000005951000-memory.dmp

        memory/3488-139-0x0000000006C30000-0x0000000006C31000-memory.dmp

        memory/3488-125-0x00000000001F0000-0x00000000001F1000-memory.dmp

        memory/3488-127-0x0000000004F50000-0x0000000004F51000-memory.dmp

        memory/3488-128-0x00000000049F0000-0x00000000049F1000-memory.dmp

        memory/3488-129-0x0000000004B20000-0x0000000004B21000-memory.dmp

        memory/3488-130-0x0000000004A50000-0x0000000004A51000-memory.dmp

        memory/3488-131-0x0000000004A90000-0x0000000004A91000-memory.dmp

        memory/3488-132-0x0000000004940000-0x0000000004F46000-memory.dmp

        memory/3488-133-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

        memory/3488-134-0x0000000005D60000-0x0000000005D61000-memory.dmp

        memory/3488-136-0x0000000005A70000-0x0000000005A71000-memory.dmp

        memory/3488-137-0x0000000005C10000-0x0000000005C11000-memory.dmp

        memory/3488-138-0x0000000006530000-0x0000000006531000-memory.dmp

        memory/3744-118-0x0000000000030000-0x0000000000038000-memory.dmp

        memory/3744-119-0x0000000000930000-0x0000000000939000-memory.dmp

        memory/3744-120-0x0000000000400000-0x000000000081D000-memory.dmp

        memory/4076-149-0x0000000000CC0000-0x0000000000CEB000-memory.dmp

        memory/4076-143-0x0000000002800000-0x000000000282E000-memory.dmp

        memory/4076-145-0x0000000004DB0000-0x0000000004DDD000-memory.dmp

        memory/4076-150-0x0000000004F74000-0x0000000004F76000-memory.dmp

        memory/4076-154-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

        memory/4076-153-0x0000000000400000-0x0000000000840000-memory.dmp

        memory/4076-155-0x0000000004F70000-0x0000000004F71000-memory.dmp

        memory/4076-156-0x0000000004F72000-0x0000000004F73000-memory.dmp

        memory/4076-157-0x0000000004F73000-0x0000000004F74000-memory.dmp

        memory/4076-152-0x0000000000CF0000-0x0000000000D29000-memory.dmp