Resubmissions

23-08-2021 19:50

210823-a9g9lc668j 10

23-08-2021 15:35

210823-m6psjka2ye 10

General

  • Target

    817.zip

  • Size

    9.6MB

  • Sample

    210823-m6psjka2ye

  • MD5

    4b234d2532387c31344a285a8c03fe8f

  • SHA1

    68743d269f02669f473cc74f0b09fc0f4b1032c8

  • SHA256

    5159ddf4335b0e93e4b265d03549ce64d2e20081941de194f88b0ad81119d53e

  • SHA512

    32ce72e4e8110b26ce7bd49ea62865282bcfb827969315705ead6dda56990756a52847635070bf730cfd4d13e978cb690b2fecb3ec83beae5c86636d202a46db

Malware Config

Extracted

Family

redline

Botnet

UPD

C2

193.56.146.78:54955

Extracted

Family

metasploit

Version

windows/single_exec

Extracted

Family

redline

Botnet

Build2_Mastif

C2

95.181.157.69:8552

Extracted

Family

redline

Botnet

Ayrelia1

C2

77.83.175.169:11490

Extracted

Family

vidar

Version

40.1

Botnet

973

C2

https://eduarroma.tumblr.com/

Attributes
  • profile_id

    973

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
rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

23.08

C2

95.181.172.100:55640

Extracted

Family

vidar

Version

40.1

Botnet

937

C2

https://eduarroma.tumblr.com/

Attributes
  • profile_id

    937

Extracted

Family

vidar

Version

40.1

Botnet

995

C2

https://eduarroma.tumblr.com/

Attributes
  • profile_id

    995

Targets

    • Target

      817

    • Size

      9.8MB

    • MD5

      724f01298e921f1f7362af6b1bc31642

    • SHA1

      e892f38da2f930133cf67533e592ded56b7d6154

    • SHA256

      8174d7d1e9ccf99d8a0164e39dbb7df725cbd710cf2f611d3ca4f2fdeb434535

    • SHA512

      ee276907cf9d4a0039d3c0affdb318bf08c1b265f4b454bfc9459a923428e701efeccbae1d88c40e2bbc56e05602289aa7e142f7193f39ec4e20bb2fcb4f0953

    • Glupteba

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

    • Glupteba Payload

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • Modifies Windows Defender Real-time Protection settings

    • NetSupport

      NetSupport is a remote access tool sold as a legitimate system administration software.

    • 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.

    • Socelars

      Socelars is an infostealer targeting browser cookies and credit card credentials.

    • Socelars Payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

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

    • Vidar Stealer

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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.

    • Drops startup file

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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 2FA software files, possible credential harvesting

    • 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 Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

File Deletion

2
T1107

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

8
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

8
T1082

Peripheral Device Discovery

2
T1120

Remote System Discovery

1
T1018

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Tasks