Overview

overview

10

Static

static

8cb590f2b6...f0.exe

windows7-x64

7

8cb590f2b6...f0.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    8cb590f2b6915a98149d41b605f084cd0d08134ac34812b1b6a67f27615e65f0

  • Size

    4.6MB

  • Sample

    230129-v9edhahb8x

  • MD5

    62bb4a8734cacaaea9605ea3b282b6b7

  • SHA1

    134a17660b9c64e35a75c175fa9f5c4bec5b2835

  • SHA256

    8cb590f2b6915a98149d41b605f084cd0d08134ac34812b1b6a67f27615e65f0

  • SHA512

    15b68c65653c7446af02a1c548b7b19a12c9328b5170a0b4f9635eacf11cc62fe8862378f237a97acf68974183904410de5c51ddc4380675cec2d4459c7e06cd

  • SSDEEP

    49152:AHy5JqSxFHuTWN5wqqOvAbCI8whLT5Xz+HavHxp7dU/V4ZNEgyU1:b5JqSxFHuTp+

Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

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

Targets

    • Target

      8cb590f2b6915a98149d41b605f084cd0d08134ac34812b1b6a67f27615e65f0

    • Size

      4.6MB

    • MD5

      62bb4a8734cacaaea9605ea3b282b6b7

    • SHA1

      134a17660b9c64e35a75c175fa9f5c4bec5b2835

    • SHA256

      8cb590f2b6915a98149d41b605f084cd0d08134ac34812b1b6a67f27615e65f0

    • SHA512

      15b68c65653c7446af02a1c548b7b19a12c9328b5170a0b4f9635eacf11cc62fe8862378f237a97acf68974183904410de5c51ddc4380675cec2d4459c7e06cd

    • SSDEEP

      49152:AHy5JqSxFHuTWN5wqqOvAbCI8whLT5Xz+HavHxp7dU/V4ZNEgyU1:b5JqSxFHuTp+

    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

    • UPX packed file

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

      upx

    • Deletes itself

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Account Manipulation

1
T1098

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Credential Access

Discovery

Lateral Movement

Remote Desktop Protocol

1
T1076

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks