Analysis

  • max time kernel
    121s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 19:15

General

  • Target

    bbb52fa71217c68368d6b4d021227e325002e5bb7ecb248661aa4242bf773d8a.exe

  • Size

    631KB

  • MD5

    e6f3897b738846eb3d58ecd0677668ef

  • SHA1

    d558f3aafcba39e5c568df3d26bed75d4e4fc335

  • SHA256

    bbb52fa71217c68368d6b4d021227e325002e5bb7ecb248661aa4242bf773d8a

  • SHA512

    b31b2efcdbff1ed82919d8e169a5ab5a180c9ca225fa55de6c35958154c1f075c21e787a59bb821cd66f403a358f70f619efaaf9da2dda327a4b7adf22487cd0

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\bbb52fa71217c68368d6b4d021227e325002e5bb7ecb248661aa4242bf773d8a.exe
    "C:\Users\Admin\AppData\Local\Temp\bbb52fa71217c68368d6b4d021227e325002e5bb7ecb248661aa4242bf773d8a.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Users\Admin\AppData\Roaming\wowsfree\arinesp.exe
      arinesp.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:792

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/792-127-0x0000000008110000-0x0000000008111000-memory.dmp
    Filesize

    4KB

  • memory/792-122-0x00000000030A0000-0x00000000030CF000-memory.dmp
    Filesize

    188KB

  • memory/792-129-0x0000000007B00000-0x0000000007B01000-memory.dmp
    Filesize

    4KB

  • memory/792-141-0x00000000091C0000-0x00000000091C1000-memory.dmp
    Filesize

    4KB

  • memory/792-130-0x0000000007550000-0x0000000007551000-memory.dmp
    Filesize

    4KB

  • memory/792-121-0x0000000002F20000-0x0000000002FCE000-memory.dmp
    Filesize

    696KB

  • memory/792-123-0x0000000000400000-0x0000000002F1A000-memory.dmp
    Filesize

    43.1MB

  • memory/792-131-0x00000000075F0000-0x00000000075F1000-memory.dmp
    Filesize

    4KB

  • memory/792-125-0x0000000007600000-0x0000000007601000-memory.dmp
    Filesize

    4KB

  • memory/792-126-0x0000000007480000-0x000000000749A000-memory.dmp
    Filesize

    104KB

  • memory/792-140-0x0000000008FF0000-0x0000000008FF1000-memory.dmp
    Filesize

    4KB

  • memory/792-128-0x0000000007520000-0x0000000007521000-memory.dmp
    Filesize

    4KB

  • memory/792-118-0x0000000000000000-mapping.dmp
  • memory/792-139-0x0000000008A70000-0x0000000008A71000-memory.dmp
    Filesize

    4KB

  • memory/792-124-0x0000000004DF0000-0x0000000004E0C000-memory.dmp
    Filesize

    112KB

  • memory/792-132-0x00000000075F2000-0x00000000075F3000-memory.dmp
    Filesize

    4KB

  • memory/792-133-0x00000000075F3000-0x00000000075F4000-memory.dmp
    Filesize

    4KB

  • memory/792-134-0x00000000075F4000-0x00000000075F6000-memory.dmp
    Filesize

    8KB

  • memory/792-135-0x0000000007C10000-0x0000000007C11000-memory.dmp
    Filesize

    4KB

  • memory/792-136-0x0000000008720000-0x0000000008721000-memory.dmp
    Filesize

    4KB

  • memory/792-137-0x00000000087A0000-0x00000000087A1000-memory.dmp
    Filesize

    4KB

  • memory/792-138-0x0000000008880000-0x0000000008881000-memory.dmp
    Filesize

    4KB

  • memory/2764-117-0x0000000000400000-0x0000000002F64000-memory.dmp
    Filesize

    43.4MB

  • memory/2764-116-0x0000000004C80000-0x0000000004D4F000-memory.dmp
    Filesize

    828KB

  • memory/2764-115-0x0000000004B80000-0x0000000004BEB000-memory.dmp
    Filesize

    428KB