servhelper | 5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa | Triage

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Reports

Overview

overview

Static

static

3

5911ad0a2f...fa.exe

windows7-x64

5911ad0a2f...fa.exe

windows10-2004-x64

Sharing

General

Target

5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
Size

5.9MB
Sample

240410-m8mpgsge7x
MD5

3cb66d271255d59945381fdc6fab9b91
SHA1

cba5bc5d238ffa84cadb81d8ac65c81c289ec74a
SHA256

5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
SHA512

770a6f375c8ba6c3c4a7da63652b58ccac9a3a0c005cf1cfc8db21447ae247bcc705c8f20da683ca89e1f0102604e23310be76c4c5daf358f81d2b36008c9a75
SSDEEP

49152:ZvAR1erb/TkvO90dL3BmAFd4A64nsfJibC5IaYNPk6bs3xwXmUGzDrQMHLPSZaaH:ZvQpbwmAQQQQQQQQQQQQQ

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa.exe

Resource

win7-20240221-en

servhelper backdoor discovery exploit persistence trojan upx

windows7-x64

20 signatures

150 seconds

Behavioral task

behavioral2

Sample

5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa.exe

Resource

win10v2004-20240226-en

servhelper backdoor discovery exploit persistence trojan upx

windows10-2004-x64

22 signatures

150 seconds

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

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

Targets

- Target
  
  5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
- Size
  
  5.9MB
- MD5
  
  3cb66d271255d59945381fdc6fab9b91
- SHA1
  
  cba5bc5d238ffa84cadb81d8ac65c81c289ec74a
- SHA256
  
  5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
- SHA512
  
  770a6f375c8ba6c3c4a7da63652b58ccac9a3a0c005cf1cfc8db21447ae247bcc705c8f20da683ca89e1f0102604e23310be76c4c5daf358f81d2b36008c9a75
- SSDEEP
  
  49152:ZvAR1erb/TkvO90dL3BmAFd4A64nsfJibC5IaYNPk6bs3xwXmUGzDrQMHLPSZaaH:ZvQpbwmAQQQQQQQQQQQQQ
Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx
- ServHelper
  ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.
  trojan backdoor servhelper
- 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
behavioral1 behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Account Manipulation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

File and Directory Permissions Modification

Credential Access

Discovery

System Information Discovery

Lateral Movement

Remote Services

Remote Desktop Protocol

Collection

Exfiltration

Command and Control

Web Service

Impact

Resource Development

Reconnaissance

Tasks

static1

behavioral1

servhelperbackdoordiscoveryexploitpersistencetrojanupx

behavioral2

servhelperbackdoordiscoveryexploitpersistencetrojanupx

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