Overview

overview

10

Static

static

8

cb4f741e2e...5b.exe

windows7-x64

10

cb4f741e2e...5b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cb4f741e2e9df6f7c011e48bd33bf3da3ddd6b091bc9ffe1b0420f0f3a39345b

  • Size

    43.6MB

  • Sample

    221003-f6jrgsbahm

  • MD5

    5db9b584c3fceaaf17467727ea35a972

  • SHA1

    9e95d8d396921f03853c4a550111d5e20a9b99c0

  • SHA256

    cb4f741e2e9df6f7c011e48bd33bf3da3ddd6b091bc9ffe1b0420f0f3a39345b

  • SHA512

    d02e0ba321965cb9c1667677758aad8ed1c7f2ef6c682ad60a795f0050c40b265754065d59c85b08baa68e060c49ecc2535e2e81a8b562848337b3269fab792a

  • SSDEEP

    786432:Kx+p5kDn/qyNvZBB3kGBADni0M7DtuephMHr4zEh2lpDLqW8LpdL:Kx+p56RNxBBeDC78e0Hr4oAjqW8Lp9

Score
10/10
bazarbackdoorbackdoorbootkitpersistenceupx

Malware Config

Targets

    • Target

      cb4f741e2e9df6f7c011e48bd33bf3da3ddd6b091bc9ffe1b0420f0f3a39345b

    • Size

      43.6MB

    • MD5

      5db9b584c3fceaaf17467727ea35a972

    • SHA1

      9e95d8d396921f03853c4a550111d5e20a9b99c0

    • SHA256

      cb4f741e2e9df6f7c011e48bd33bf3da3ddd6b091bc9ffe1b0420f0f3a39345b

    • SHA512

      d02e0ba321965cb9c1667677758aad8ed1c7f2ef6c682ad60a795f0050c40b265754065d59c85b08baa68e060c49ecc2535e2e81a8b562848337b3269fab792a

    • SSDEEP

      786432:Kx+p5kDn/qyNvZBB3kGBADni0M7DtuephMHr4zEh2lpDLqW8LpdL:Kx+p56RNxBBeDC78e0Hr4oAjqW8Lp9

    Score
    10/10
    bazarbackdoorbackdoorbootkitpersistenceupx

    • BazarBackdoor

      Stealthy backdoor targeting corporate networks, believed to be developed by Trickbot's authors.

      backdoorbazarbackdoor

    • Bazar/Team9 Backdoor payload

    • Executes dropped EXE

    • UPX packed file

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

      upx

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks