servhelper | cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3 | Triage

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Overview

overview

Static

static

3

cc28e32761...d3.exe

windows7-x64

cc28e32761...d3.exe

windows10-2004-x64

Sharing

General

Target

cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3
Size

5.7MB
Sample

240410-rhf68saf23
MD5

63151e4f7c3972f18a23c0e9996e14ef
SHA1

5d041fde6433a8ff8fc78a69fca1fd4630e3f270
SHA256

cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3
SHA512

f08c402f0a966cbe89fae0b5f9aa8536d6313dada788486a4db422a042769713a2896753acd47223348349b9960b5cde9470cc862668e2cdb90a6fcc1b87c8ec
SSDEEP

49152:H+zcyKrb/T/vO90dL3BmAFd4A64nsfJdItom5VWIKvZeUW+EMioAnt64mtCvtEhq:H+nvKojmAQQQQQQQQQQQQQ

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3.exe

Resource

win7-20240221-en

servhelper backdoor discovery exploit persistence trojan upx

windows7-x64

20 signatures

150 seconds

Behavioral task

behavioral2

Sample

cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3.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
  
  cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3
- Size
  
  5.7MB
- MD5
  
  63151e4f7c3972f18a23c0e9996e14ef
- SHA1
  
  5d041fde6433a8ff8fc78a69fca1fd4630e3f270
- SHA256
  
  cc28e327610e9deb6551c99a32a44fec86220f2840276474ded747580af850d3
- SHA512
  
  f08c402f0a966cbe89fae0b5f9aa8536d6313dada788486a4db422a042769713a2896753acd47223348349b9960b5cde9470cc862668e2cdb90a6fcc1b87c8ec
- SSDEEP
  
  49152:H+zcyKrb/T/vO90dL3BmAFd4A64nsfJdItom5VWIKvZeUW+EMioAnt64mtCvtEhq:H+nvKojmAQQQQQQQQQQQQQ
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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