servhelper | 64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07 | Triage

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Reports

Overview

overview

Static

static

3

64cb280711...07.exe

windows7-x64

64cb280711...07.exe

windows10-2004-x64

Sharing

General

Target

64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07
Size

6.7MB
Sample

240410-nnb8paea79
MD5

185a05aefc21ed3f07716a01871e2c5a
SHA1

2e706b6810c21605fbb4b6c32dbdb1e5c1c28f0a
SHA256

64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07
SHA512

458307a3b8f9ecd0bcae80582051835f5b263690d28bc85d4b228b1de7a3cb8146af9e7c139201146a1585a0d11531ef8a4534d00e1517406d8b19ecd835a7d9
SSDEEP

98304:Wrbq9XeGw2WuPDwTTOzAElMLmZ7oo8kTApKGaRqc4O1XujlqHRARZ:WrbcZpPDsTTLmxoQT7RRq4ujlzRZ

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07.exe

Resource

win7-20240319-en

servhelper backdoor discovery exploit persistence trojan upx

windows7-x64

20 signatures

150 seconds

Behavioral task

behavioral2

Sample

64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07.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
  
  64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07
- Size
  
  6.7MB
- MD5
  
  185a05aefc21ed3f07716a01871e2c5a
- SHA1
  
  2e706b6810c21605fbb4b6c32dbdb1e5c1c28f0a
- SHA256
  
  64cb280711db0137dc6da7f2cd71745f94ada56d890c6326f07f1b36eee36e07
- SHA512
  
  458307a3b8f9ecd0bcae80582051835f5b263690d28bc85d4b228b1de7a3cb8146af9e7c139201146a1585a0d11531ef8a4534d00e1517406d8b19ecd835a7d9
- SSDEEP
  
  98304:Wrbq9XeGw2WuPDwTTOzAElMLmZ7oo8kTApKGaRqc4O1XujlqHRARZ:WrbcZpPDsTTLmxoQT7RRq4ujlzRZ
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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