General

  • Target

    a1dbee4eb411d2403bdbdd3e22937e6f.exe

  • Size

    933KB

  • Sample

    230923-2ssywsag5y

  • MD5

    a1dbee4eb411d2403bdbdd3e22937e6f

  • SHA1

    96a35c0f122a53ec29dfd6e2f7218d0f86a0bcb7

  • SHA256

    2859265c38e2c246d998c7126acc83a60511e864e942edda3975130228e00367

  • SHA512

    ef156bb2be96f771212f3abbd431e2952244a59e2b84b5abc6cdfadb38f9112eb291c2b2607975e4d9c0e1e41263c15620a42eac8dd2611006b2359e42cd9c5e

  • SSDEEP

    24576:IyoQOExFt6AV40u9lEiznuBc9FVRbzOght:PoQLxjk0u7EizCuxS6

Malware Config

Extracted

Family

redline

Botnet

nanya

C2

77.91.124.82:19071

Attributes
  • auth_value

    640aa5afe54f566d8795f0dc723f8b52

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Targets

    • Target

      a1dbee4eb411d2403bdbdd3e22937e6f.exe

    • Size

      933KB

    • MD5

      a1dbee4eb411d2403bdbdd3e22937e6f

    • SHA1

      96a35c0f122a53ec29dfd6e2f7218d0f86a0bcb7

    • SHA256

      2859265c38e2c246d998c7126acc83a60511e864e942edda3975130228e00367

    • SHA512

      ef156bb2be96f771212f3abbd431e2952244a59e2b84b5abc6cdfadb38f9112eb291c2b2607975e4d9c0e1e41263c15620a42eac8dd2611006b2359e42cd9c5e

    • SSDEEP

      24576:IyoQOExFt6AV40u9lEiznuBc9FVRbzOght:PoQLxjk0u7EizCuxS6

    • Detect rhadamanthys stealer shellcode

    • Detects Healer an antivirus disabler dropper

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Healer

      Healer an antivirus disabler dropper.

    • Modifies Windows Defender Real-time Protection settings

    • Phobos

      Phobos ransomware appeared at the beginning of 2019.

    • RedLine

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

    • RedLine payload

    • Rhadamanthys

      Rhadamanthys is an info stealer written in C++ first seen in August 2022.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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.

    • Renames multiple (60) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • XMRig Miner payload

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • 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.

    • Drops desktop.ini file(s)

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks