General

  • Target

    D1EEC7914A5CA2F3E3A0B4C3C4E557EF.exe

  • Size

    2.4MB

  • Sample

    210825-qyjmlan4ve

  • MD5

    d1eec7914a5ca2f3e3a0b4c3c4e557ef

  • SHA1

    f655fcf0e1ecf1a79a6c19d71fba9714611c1bef

  • SHA256

    56e45f6af87cf8505b1d88360f14bf00bca7be5108db4d4283fab4605fca2482

  • SHA512

    0f640a7649b2b3fadf2686f3fb0fb811bee25f6eeb7591909ba2671036ef933604166737dc74eb22c12851330c027124522a3deee5317f62873b77b7325f163d

Malware Config

Extracted

Family

cryptbot

C2

lysuht78.top

morisc07.top

Attributes
  • payload_url

    http://damysa10.top/download.php?file=lv.exe

Extracted

Family

vidar

Version

40

Botnet

706

C2

https://lenak513.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

redline

Botnet

test1

C2

185.215.113.15:61506

Extracted

Family

smokeloader

Version

2020

C2

http://aucmoney.com/upload/

http://thegymmum.com/upload/

http://atvcampingtrips.com/upload/

http://kuapakualaman.com/upload/

http://renatazarazua.com/upload/

http://nasufmutlu.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      D1EEC7914A5CA2F3E3A0B4C3C4E557EF.exe

    • Size

      2.4MB

    • MD5

      d1eec7914a5ca2f3e3a0b4c3c4e557ef

    • SHA1

      f655fcf0e1ecf1a79a6c19d71fba9714611c1bef

    • SHA256

      56e45f6af87cf8505b1d88360f14bf00bca7be5108db4d4283fab4605fca2482

    • SHA512

      0f640a7649b2b3fadf2686f3fb0fb811bee25f6eeb7591909ba2671036ef933604166737dc74eb22c12851330c027124522a3deee5317f62873b77b7325f163d

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

    • CryptBot Payload

    • Modifies Windows Defender Real-time Protection settings

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • 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.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

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

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

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

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • 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 Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

2
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks