General

  • Target

    C105D4787DDE8F7183C57C1285E9F808.exe

  • Size

    5.7MB

  • Sample

    210820-sr9elgw9f6

  • MD5

    c105d4787dde8f7183c57c1285e9f808

  • SHA1

    91111164eb5a8b996eefe72a6363bad3f1a858b0

  • SHA256

    a8d8a6f9478a60a05d3b8c57a616da20c83b99bc7877c46163fcd126bbb25409

  • SHA512

    5f97fdcdb34d8ce3d3e7272a30e27d93766bf0214a54ac55cdafd41e3bbfb57ebc537fe5955a7af80fee578c17f81116410e69cf865aa38a2d93280ff0c308a1

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

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

Extracted

Family

redline

Botnet

www

C2

185.204.109.146:54891

Extracted

Family

redline

Botnet

Second_7.5K

C2

45.14.49.200:27625

Extracted

Family

redline

Botnet

fopoejpvcepjvwe[9

C2

45.14.49.232:6811

Targets

    • Target

      C105D4787DDE8F7183C57C1285E9F808.exe

    • Size

      5.7MB

    • MD5

      c105d4787dde8f7183c57c1285e9f808

    • SHA1

      91111164eb5a8b996eefe72a6363bad3f1a858b0

    • SHA256

      a8d8a6f9478a60a05d3b8c57a616da20c83b99bc7877c46163fcd126bbb25409

    • SHA512

      5f97fdcdb34d8ce3d3e7272a30e27d93766bf0214a54ac55cdafd41e3bbfb57ebc537fe5955a7af80fee578c17f81116410e69cf865aa38a2d93280ff0c308a1

    • 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.

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection 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

1
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks