servhelper | c7cb1cc9a2148e8db293de61d791cbbe7202eda89335c93caf454028a61d0a90 | Triage

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Overview

overview

Static

static

3

f19b9d6b74...18.exe

windows7-x64

f19b9d6b74...18.exe

windows10-2004-x64

Sharing

General

Target

f19b9d6b74f65125623613a334baba76_JaffaCakes118
Size

7.0MB
Sample

240415-v46wkaed2y
MD5

f19b9d6b74f65125623613a334baba76
SHA1

8b1428daa9a7d2231663784c2e0457034dbdd468
SHA256

c7cb1cc9a2148e8db293de61d791cbbe7202eda89335c93caf454028a61d0a90
SHA512

f993b7002c952cc754d86726031052fde8dcdda6ce29b35aca9f8318e390c86b370f2519cb4ec2374e24645772ef6dfbbb4bcf25c49587e4b5d678588c5a3fd4
SSDEEP

196608:9gwCUo86gyVJHh22fiIUrKqJGZdwInqqwgrSPn:9pv6g+JHhu1WVZdwIqqdr

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

f19b9d6b74f65125623613a334baba76_JaffaCakes118.exe

Resource

win7-20240319-en

servhelper backdoor discovery exploit persistence trojan upx

windows7-x64

20 signatures

150 seconds

Behavioral task

behavioral2

Sample

f19b9d6b74f65125623613a334baba76_JaffaCakes118.exe

Resource

win10v2004-20240412-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
  
  f19b9d6b74f65125623613a334baba76_JaffaCakes118
- Size
  
  7.0MB
- MD5
  
  f19b9d6b74f65125623613a334baba76
- SHA1
  
  8b1428daa9a7d2231663784c2e0457034dbdd468
- SHA256
  
  c7cb1cc9a2148e8db293de61d791cbbe7202eda89335c93caf454028a61d0a90
- SHA512
  
  f993b7002c952cc754d86726031052fde8dcdda6ce29b35aca9f8318e390c86b370f2519cb4ec2374e24645772ef6dfbbb4bcf25c49587e4b5d678588c5a3fd4
- SSDEEP
  
  196608:9gwCUo86gyVJHh22fiIUrKqJGZdwInqqwgrSPn:9pv6g+JHhu1WVZdwIqqdr
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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