Resubmissions

13-08-2021 20:48

210813-kcved12sx6 10

13-08-2021 16:47

210813-hn9mb6jy42 10

General

  • Target

    2737E2CAB1E399C563FE0557683234FD.exe

  • Size

    3.9MB

  • Sample

    210813-kcved12sx6

  • MD5

    2737e2cab1e399c563fe0557683234fd

  • SHA1

    a78fdf21a20d386622a448909c4c3d8a527e3102

  • SHA256

    f7f5898bbed2b677a52a031071110b8aebb4b3eba2669703f6dd60e6953dc2a2

  • SHA512

    3e58d11e6a87bb5f52e674b998672e9d3d8b165275e8818733a2da1043279a9c4109aa7ad51bb74de9984d360e7f277f92653f50e2088c66cb0b6552901a6dff

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforjuly1.xyz/

http://readinglistforjuly2.xyz/

http://readinglistforjuly3.xyz/

http://readinglistforjuly4.xyz/

http://readinglistforjuly5.xyz/

http://readinglistforjuly6.xyz/

http://readinglistforjuly7.xyz/

http://readinglistforjuly8.xyz/

http://readinglistforjuly9.xyz/

http://readinglistforjuly10.xyz/

http://readinglistforjuly1.site/

http://readinglistforjuly2.site/

http://readinglistforjuly3.site/

http://readinglistforjuly4.site/

http://readinglistforjuly5.site/

http://readinglistforjuly6.site/

http://readinglistforjuly7.site/

http://readinglistforjuly8.site/

http://readinglistforjuly9.site/

http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Targets

    • Target

      2737E2CAB1E399C563FE0557683234FD.exe

    • Size

      3.9MB

    • MD5

      2737e2cab1e399c563fe0557683234fd

    • SHA1

      a78fdf21a20d386622a448909c4c3d8a527e3102

    • SHA256

      f7f5898bbed2b677a52a031071110b8aebb4b3eba2669703f6dd60e6953dc2a2

    • SHA512

      3e58d11e6a87bb5f52e674b998672e9d3d8b165275e8818733a2da1043279a9c4109aa7ad51bb74de9984d360e7f277f92653f50e2088c66cb0b6552901a6dff

    • 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.

    • Raccoon

      Simple but powerful infostealer which was very active 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.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Observed Elysium Stealer Variant CnC Domain (all-brain-company .xyz in TLS SNI)

      suricata: ET MALWARE Observed Elysium Stealer Variant CnC Domain (all-brain-company .xyz in TLS SNI)

    • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

      suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

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

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

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Disabling Security Tools

1
T1089

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Tasks