Overview

overview

10

Static

static

f113556c66...ab.exe

windows7_x64

1

f113556c66...ab.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    f113556c666089edb042e0fe628d12c5e705443ee004d7633f6d1ac8f129e9ab

  • Size

    3.5MB

  • Sample

    220419-grd35agbhk

  • MD5

    430153f225c19501842717a80283c9ed

  • SHA1

    b53056dd325af27d8c295731dbbe102ace42def6

  • SHA256

    f113556c666089edb042e0fe628d12c5e705443ee004d7633f6d1ac8f129e9ab

  • SHA512

    a9051ad3af63a3bed0c63ab7e6ea26a8b4fc944bbf4eca394f1ea07f645c0fd94551fe2b33d86ca62fc86f6ee2ee515ad95b51473511466a679858468cdba8d2

Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

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

Targets

    • Target

      f113556c666089edb042e0fe628d12c5e705443ee004d7633f6d1ac8f129e9ab

    • Size

      3.5MB

    • MD5

      430153f225c19501842717a80283c9ed

    • SHA1

      b53056dd325af27d8c295731dbbe102ace42def6

    • SHA256

      f113556c666089edb042e0fe628d12c5e705443ee004d7633f6d1ac8f129e9ab

    • SHA512

      a9051ad3af63a3bed0c63ab7e6ea26a8b4fc944bbf4eca394f1ea07f645c0fd94551fe2b33d86ca62fc86f6ee2ee515ad95b51473511466a679858468cdba8d2

    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

    • 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