Analysis

  • max time kernel
    123s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    22-10-2021 18:42

General

  • Target

    33312ed9ae90f5bc1158f5d77db9e2f5.exe

  • Size

    714KB

  • MD5

    33312ed9ae90f5bc1158f5d77db9e2f5

  • SHA1

    55b3b14afd90d8fb09dc4017a30960cd41da3a4d

  • SHA256

    e3cc1d9e6c4d4c641410780650e30c1719e66d2885c82dbb1042767de4f25de9

  • SHA512

    5b07f5f4ef1aec19b875b45361071a8d784f187336d4141a70c2d981e148a6e9b0752190aa08720904a5a1c7abdb94a34988c2884b96abe21f828d69333e3bdc

Malware Config

Extracted

Family

redline

Botnet

mix22.10

C2

185.215.113.15:21508

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger

    suricata: ET MALWARE AutoHotkey Downloader Checkin via IPLogger

  • 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 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33312ed9ae90f5bc1158f5d77db9e2f5.exe
    "C:\Users\Admin\AppData\Local\Temp\33312ed9ae90f5bc1158f5d77db9e2f5.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2640
    • C:\Users\Admin\AppData\Roaming\wowsfree\arinesp.exe
      arinesp.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3144

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\wowsfree\arinesp.exe
    MD5

    1ae3794f124bfc4723c91150469a408a

    SHA1

    3a1ec7ab994293f8ffc0e5c5f79959ada980582c

    SHA256

    12ab922da7afdaec8bc1a2fc551f41aa9703efc19186b50eee1e42edda7fd721

    SHA512

    8405e811fdda76b49893a857c2007a85e3db9ab3c44317c3afcd954122ae4c98559bad42acb52176c0dd0d4c65d12e952d9df33aaa1966d06e827f2b2b44a1f3

  • C:\Users\Admin\AppData\Roaming\wowsfree\arinesp.exe
    MD5

    1ae3794f124bfc4723c91150469a408a

    SHA1

    3a1ec7ab994293f8ffc0e5c5f79959ada980582c

    SHA256

    12ab922da7afdaec8bc1a2fc551f41aa9703efc19186b50eee1e42edda7fd721

    SHA512

    8405e811fdda76b49893a857c2007a85e3db9ab3c44317c3afcd954122ae4c98559bad42acb52176c0dd0d4c65d12e952d9df33aaa1966d06e827f2b2b44a1f3

  • memory/2640-117-0x0000000000400000-0x00000000008E2000-memory.dmp
    Filesize

    4.9MB

  • memory/2640-116-0x0000000000D90000-0x0000000000E5F000-memory.dmp
    Filesize

    828KB

  • memory/2640-115-0x0000000000A5B000-0x0000000000AC7000-memory.dmp
    Filesize

    432KB

  • memory/3144-127-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
    Filesize

    4KB

  • memory/3144-131-0x0000000004F92000-0x0000000004F93000-memory.dmp
    Filesize

    4KB

  • memory/3144-121-0x0000000002F70000-0x0000000002F91000-memory.dmp
    Filesize

    132KB

  • memory/3144-123-0x0000000004C50000-0x0000000004C6C000-memory.dmp
    Filesize

    112KB

  • memory/3144-124-0x0000000007640000-0x0000000007641000-memory.dmp
    Filesize

    4KB

  • memory/3144-125-0x0000000004F30000-0x0000000004F4A000-memory.dmp
    Filesize

    104KB

  • memory/3144-126-0x0000000007B40000-0x0000000007B41000-memory.dmp
    Filesize

    4KB

  • memory/3144-118-0x0000000000000000-mapping.dmp
  • memory/3144-128-0x0000000008150000-0x0000000008151000-memory.dmp
    Filesize

    4KB

  • memory/3144-129-0x0000000000400000-0x0000000002F1A000-memory.dmp
    Filesize

    43.1MB

  • memory/3144-130-0x0000000004F90000-0x0000000004F91000-memory.dmp
    Filesize

    4KB

  • memory/3144-122-0x0000000002FC0000-0x000000000306E000-memory.dmp
    Filesize

    696KB

  • memory/3144-132-0x0000000004F94000-0x0000000004F96000-memory.dmp
    Filesize

    8KB

  • memory/3144-133-0x0000000004F93000-0x0000000004F94000-memory.dmp
    Filesize

    4KB

  • memory/3144-134-0x0000000005120000-0x0000000005121000-memory.dmp
    Filesize

    4KB

  • memory/3144-135-0x0000000005190000-0x0000000005191000-memory.dmp
    Filesize

    4KB

  • memory/3144-136-0x00000000086D0000-0x00000000086D1000-memory.dmp
    Filesize

    4KB

  • memory/3144-137-0x00000000087B0000-0x00000000087B1000-memory.dmp
    Filesize

    4KB

  • memory/3144-138-0x0000000008990000-0x0000000008991000-memory.dmp
    Filesize

    4KB

  • memory/3144-139-0x0000000008A30000-0x0000000008A31000-memory.dmp
    Filesize

    4KB

  • memory/3144-140-0x0000000008EB0000-0x0000000008EB1000-memory.dmp
    Filesize

    4KB

  • memory/3144-141-0x0000000009080000-0x0000000009081000-memory.dmp
    Filesize

    4KB