Overview

overview

10

Static

static

7

QSAR.exe

windows7-x64

10

QSAR.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    QSAR.exe

  • Size

    3.8MB

  • Sample

    230605-c6h86sfb5v

  • MD5

    b5f2bdcf06aae6c7e55c57fa3bb1233f

  • SHA1

    ae89b4e0ab3042a82f876bca93af1cd51564625a

  • SHA256

    a73e31f73387a5e43157b02f3df6edbebc54ab806dfc53054f4d0e2efbee5d54

  • SHA512

    9b0bc29d4c15c0d18281b543c5e9c7b9ace5aaf65eb13d679ece6178f903e2d8763d037307021e987c68889db12c827ebeebc27848b66608c91481710eebb03a

  • SSDEEP

    49152:dl93YePBeO8qmJmbEhN+TJBDgN8nCfV8ot35mzUNs6P/dXy8KGCz/W2nxLOpavvU:7ye5e4FbDI8sF1s6U8KGoTKIAQphv/Q

Score
10/10
quasardiscord updaterevasionspywarethemidatrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Discord Updater

C2

34.95.169.39:9000

microsotf.ddns.net:9000
Mutex

159eba35-3396-4041-83ca-f7ae82b4a3c4

Attributes
  • encryption_key

    DD11DD94FCA2BC6D9E7164A7520569590E885EE8

  • install_name

    Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Updater

  • subdirectory

    Discord Updater

Targets

    • Target

      QSAR.exe

    • Size

      3.8MB

    • MD5

      b5f2bdcf06aae6c7e55c57fa3bb1233f

    • SHA1

      ae89b4e0ab3042a82f876bca93af1cd51564625a

    • SHA256

      a73e31f73387a5e43157b02f3df6edbebc54ab806dfc53054f4d0e2efbee5d54

    • SHA512

      9b0bc29d4c15c0d18281b543c5e9c7b9ace5aaf65eb13d679ece6178f903e2d8763d037307021e987c68889db12c827ebeebc27848b66608c91481710eebb03a

    • SSDEEP

      49152:dl93YePBeO8qmJmbEhN+TJBDgN8nCfV8ot35mzUNs6P/dXy8KGCz/W2nxLOpavvU:7ye5e4FbDI8sF1s6U8KGoTKIAQphv/Q

    Score
    10/10
    quasardiscord updaterevasionspywarethemidatrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

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

      evasion

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks