Overview

overview

10

Static

static

ProxyChecker.exe

windows7-x64

10

Sharing

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General

  • Target

    ProxyChecker.exe

  • Size

    9.2MB

  • Sample

    221218-x4ehesde52

  • MD5

    282a174261a5c0fdec33cada88a324e4

  • SHA1

    286d8b4aac44268445bb768f67131cd699fc744d

  • SHA256

    45d8f58be85155165282d500c6cb8e135c66791294c85362ff43f541ab9f8d8c

  • SHA512

    31e5c227d6ef3ed0e6d1373cfedda54993d484cbe2bfc680ad8e71d089aab791a422903e80755002833cce72d6260c8ed53cb632e651664dca28824077f02294

  • SSDEEP

    196608:x6ZLA0XTNTX5k+5ykc9EZXwJAinGPNbv0mlqzosG:x6S0F5ki+qYyND0mlqzosG

Score
10/10
bazarbackdooradwarebackdoorpersistencestealerupx

Malware Config

Targets

    • Target

      ProxyChecker.exe

    • Size

      9.2MB

    • MD5

      282a174261a5c0fdec33cada88a324e4

    • SHA1

      286d8b4aac44268445bb768f67131cd699fc744d

    • SHA256

      45d8f58be85155165282d500c6cb8e135c66791294c85362ff43f541ab9f8d8c

    • SHA512

      31e5c227d6ef3ed0e6d1373cfedda54993d484cbe2bfc680ad8e71d089aab791a422903e80755002833cce72d6260c8ed53cb632e651664dca28824077f02294

    • SSDEEP

      196608:x6ZLA0XTNTX5k+5ykc9EZXwJAinGPNbv0mlqzosG:x6S0F5ki+qYyND0mlqzosG

    Score
    10/10
    bazarbackdooradwarebackdoorpersistencestealerupx

    • BazarBackdoor

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

      backdoorbazarbackdoor

    • Bazar/Team9 Backdoor payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Registers COM server for autorun

      persistence

    • UPX packed file

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

      upx

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

      stealeradware

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

3
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks