General

  • Target

    a9e8ec191b0897a19ed39e0fdf4e052ec3f49f04f4f4fd194c5c4b9ac3df0336

  • Size

    265KB

  • Sample

    210827-rtcspz4kkx

  • MD5

    c9e94a1ed1edd839eca2e9e01c08fc03

  • SHA1

    2d75e4ae0cc5979e5d1205de6eca62b75be8a7a9

  • SHA256

    a9e8ec191b0897a19ed39e0fdf4e052ec3f49f04f4f4fd194c5c4b9ac3df0336

  • SHA512

    51710d8d48f99c428c5bb0c6c75dc77db6c65897fe0461c1ff213b6640d958b4d2313f630502f8b71ea76212aaf54cea94773f62b2f7c046ff9861e5662ef231

Malware Config

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. PAY FAST 500$=0.013 btc or the price will increase tomorrow bitcoin address bc1qqxnp9z0ff8x852dyflp5r9r6rzse8jl5hzmqz8 To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? [email protected] TELEGRAM @ payfast290 Your personal ID: AD6-494-061 Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforaugust1.xyz/

http://readinglistforaugust2.xyz/

http://readinglistforaugust3.xyz/

http://readinglistforaugust4.xyz/

http://readinglistforaugust5.xyz/

http://readinglistforaugust6.xyz/

http://readinglistforaugust7.xyz/

http://readinglistforaugust8.xyz/

http://readinglistforaugust9.xyz/

http://readinglistforaugust10.xyz/

http://readinglistforaugust1.site/

http://readinglistforaugust2.site/

http://readinglistforaugust3.site/

http://readinglistforaugust4.site/

http://readinglistforaugust5.site/

http://readinglistforaugust6.site/

http://readinglistforaugust7.site/

http://readinglistforaugust8.site/

http://readinglistforaugust9.site/

http://readinglistforaugust10.site/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

1

C2

176.9.244.86:16284

Extracted

Family

redline

Botnet

Moneymaker

C2

77.83.175.169:11490

Targets

    • Target

      a9e8ec191b0897a19ed39e0fdf4e052ec3f49f04f4f4fd194c5c4b9ac3df0336

    • Size

      265KB

    • MD5

      c9e94a1ed1edd839eca2e9e01c08fc03

    • SHA1

      2d75e4ae0cc5979e5d1205de6eca62b75be8a7a9

    • SHA256

      a9e8ec191b0897a19ed39e0fdf4e052ec3f49f04f4f4fd194c5c4b9ac3df0336

    • SHA512

      51710d8d48f99c428c5bb0c6c75dc77db6c65897fe0461c1ff213b6640d958b4d2313f630502f8b71ea76212aaf54cea94773f62b2f7c046ff9861e5662ef231

    • Buran

      Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

    • RedLine

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

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Deletes itself

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks