Resubmissions

24-05-2021 05:31

210524-b4dx7j71fj 10

21-05-2021 13:30

210521-r42mg8cghe 10

General

  • Target

    keygen-step-4.exe

  • Size

    5.6MB

  • Sample

    210521-r42mg8cghe

  • MD5

    a110ce3f7366c6bb12553ea17a793110

  • SHA1

    8e10076496347d6324382f20968f3b7c8516eedf

  • SHA256

    0e63f296fdc309cb1e487cd1a549d029d2a9144b8a050db274901030dc6ec0f3

  • SHA512

    dc9103da71a1143365f3c7f39c4a316a9b9cc6e337b601a95d13d68bba777d2145d79a9d44ac96edce71775819e4d4bb2bb0cf7e49627163237ec3580b25c3cf

Malware Config

Extracted

Family

redline

Botnet

ServLyla2

C2

87.251.71.4:80

Targets

    • Target

      keygen-step-4.exe

    • Size

      5.6MB

    • MD5

      a110ce3f7366c6bb12553ea17a793110

    • SHA1

      8e10076496347d6324382f20968f3b7c8516eedf

    • SHA256

      0e63f296fdc309cb1e487cd1a549d029d2a9144b8a050db274901030dc6ec0f3

    • SHA512

      dc9103da71a1143365f3c7f39c4a316a9b9cc6e337b601a95d13d68bba777d2145d79a9d44ac96edce71775819e4d4bb2bb0cf7e49627163237ec3580b25c3cf

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • RedLine

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

    • RedLine Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Executes dropped EXE

    • UPX packed file

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

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • 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 cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • 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 SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks

static1

Score
N/A

behavioral1

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10

behavioral2

Score
8/10

behavioral3

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10

behavioral4

Score
8/10

behavioral5

redlineservlyla2infostealerspywarevmprotect
Score
10/10

behavioral6

Score
8/10

behavioral7

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10

behavioral8

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10

behavioral9

Score
8/10

behavioral10

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10

behavioral11

Score
8/10

behavioral12

plugxredlineservlyla2evasioninfostealerpersistencespywarestealertrojanupxvmprotect
Score
10/10