Overview

overview

10

Static

static

3

046f08e500...11.exe

windows7-x64

10

046f08e500...11.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    046f08e500cc9156c4af47a73744ccb060606c77d7a8beb5677aa6ff4d256211

  • Size

    5.9MB

  • Sample

    240410-lcbrnsde41

  • MD5

    f71c575754e1f5890ad8b35afd08b8be

  • SHA1

    69803b96f3820fabd81c79d422a1fa2a72ccb699

  • SHA256

    046f08e500cc9156c4af47a73744ccb060606c77d7a8beb5677aa6ff4d256211

  • SHA512

    32f7fab593c46efe2586825aff79688e4a688735bf950b351fe3bdffc4a9dff01da0b2d4a92acf4d4bd14aac362884bd264beced9e8b82fd3111e8ef8ef31301

  • SSDEEP

    49152:1Hjgzprb/TkvO90dL3BmAFd4A64nsfJ9X559RIO3CV7rfM2Zy4oaBqn4BHXVpetO:1H6/X5mAQQQQQQQQQQQQQ

Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Targets

    • Target

      046f08e500cc9156c4af47a73744ccb060606c77d7a8beb5677aa6ff4d256211

    • Size

      5.9MB

    • MD5

      f71c575754e1f5890ad8b35afd08b8be

    • SHA1

      69803b96f3820fabd81c79d422a1fa2a72ccb699

    • SHA256

      046f08e500cc9156c4af47a73744ccb060606c77d7a8beb5677aa6ff4d256211

    • SHA512

      32f7fab593c46efe2586825aff79688e4a688735bf950b351fe3bdffc4a9dff01da0b2d4a92acf4d4bd14aac362884bd264beced9e8b82fd3111e8ef8ef31301

    • SSDEEP

      49152:1Hjgzprb/TkvO90dL3BmAFd4A64nsfJ9X559RIO3CV7rfM2Zy4oaBqn4BHXVpetO:1H6/X5mAQQQQQQQQQQQQQ

    Score
    10/10
    servhelperbackdoordiscoveryexploitpersistencetrojanupx

    • ServHelper

      ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

      trojanbackdoorservhelper

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Blocklisted process makes network request

    • Modifies RDP port number used by Windows

    • Possible privilege escalation attempt

      exploit

    • Sets DLL path for service in the registry

      persistence

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • UPX packed file

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

      upx

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

2
T1112

File and Directory Permissions Modification

1
T1222

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Remote Services

1
T1021

Remote Desktop Protocol

1
T1021.001

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks