MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b591e73c3ebfe7ba44eb161c3cc1ee7b9a794d4e9b9b9aa4e3936f518e814ceb. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
ServHelper
Vendor detections: 9
| SHA256 hash: | b591e73c3ebfe7ba44eb161c3cc1ee7b9a794d4e9b9b9aa4e3936f518e814ceb |
|---|---|
| SHA3-384 hash: | d06c3f8efd4fd1d1c7d865cc4f2f3e74db6ca735114cb681983e176e070be529476fb12ceeabea6c4609608b93bd3f77 |
| SHA1 hash: | 1d8809af5064e34d19a266c2b4b30d279a78976a |
| MD5 hash: | f111dbe60c4dbff789a64d3a1145edd7 |
| humanhash: | cat-sodium-thirteen-undress |
| File name: | SecuriteInfo.com.Variant.Bulz.386265.27040.5090 |
| Download: | download sample |
| Signature | ServHelper |
| File size: | 6'347'264 bytes |
| First seen: | 2021-03-18 12:56:30 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 4035d2883e01d64f3e7a9dccb1d63af5 (47 x ServHelper, 20 x LummaStealer, 17 x Rhadamanthys) |
| ssdeep | 49152:4ELYbXCywfWdfl1k5kuw1FK7hhY0adWQfsNXAuxMoaw7kryDoktWAl7D7LVoQnoV:MXCywfM93n |
| Threatray | 74 similar samples on MalwareBazaar |
| TLSH | 6256E012BCD204FAC57AE170855693A1BA723C7487323BD72E94B66A1A75FD42F3E310 |
| Reporter |  SecuriteInfoCom |
| Tags: | ServHelper |
Intelligence
File Origin
# of uploads :
1
# of downloads :
972
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Variant.Bulz.386265.27040.5090
Verdict:
No threats detected
Analysis date:
2021-03-18 13:00:07 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a file in the system32 subdirectories
Modifying a system executable file
Creating a window
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Launching the process to interact with network services
Running batch commands
Downloading the file
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
88 / 100
Signature
Antivirus detection for dropped file
Bypasses PowerShell execution policy
Creates a Windows Service pointing to an executable in C:\Windows
Multi AV Scanner detection for submitted file
Powershell drops PE file
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Sigma detected: Dot net compiler compiles file from suspicious location
Uses cmd line tools excessively to alter registry or file data
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Threat name:
Win64.Trojan.WinGoGoCLR
Status:
Malicious
First seen:
2021-03-18 11:38:17 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 64 additional samples on MalwareBazaar
Result
Malware family:
servhelper
Score:
10/10
Tags:
family:servhelper backdoor discovery exploit persistence trojan upx
Behaviour
Modifies data under HKEY_USERS
Modifies registry key
Runs net.exe
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Loads dropped DLL
Modifies file permissions
Blocklisted process makes network request
Modifies RDP port number used by Windows
Possible privilege escalation attempt
Sets DLL path for service in the registry
UPX packed file
Grants admin privileges
ServHelper
Malware Config
Dropper Extraction:
https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1
Unpacked files
SH256 hash:
b591e73c3ebfe7ba44eb161c3cc1ee7b9a794d4e9b9b9aa4e3936f518e814ceb
MD5 hash:
f111dbe60c4dbff789a64d3a1145edd7
SHA1 hash:
1d8809af5064e34d19a266c2b4b30d279a78976a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| Rule name: | suspicious_packer_section |
|---|---|
| Author: | @j0sm1 |
| Description: | The packer/protector section names/keywords |
| Reference: | http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/ |
| Rule name: | susp_winsvc_upx |
|---|---|
| Author: | SBousseaden |
| Description: | broad hunt for any PE exporting ServiceMain API and upx packed |
| Rule name: | Warp |
|---|---|
| Author: | Seth Hardy |
| Description: | Warp |
| Rule name: | WarpStrings |
|---|---|
| Author: | Seth Hardy |
| Description: | Warp Identifying Strings |
| Rule name: | win_servhelper_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.