MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8. 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


Intelligence 9 IOCs YARA 5 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8
SHA3-384 hash: b4876d28df17970f01d292a41e435d92743c793de0c4ee2fd26111e0215797fc8aad1a826570ab04da162d970d3b58a5
SHA1 hash: 16ab38c0e9c4516532f9d111523e948a6311bfc0
MD5 hash: 86178014e457120d9dc6f6e27453338c
humanhash: minnesota-oscar-mississippi-mountain
File name:86178014e457120d9dc6f6e27453338c
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'329'856 bytes
First seen:2021-08-09 04:20:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 4035d2883e01d64f3e7a9dccb1d63af5 (47 x ServHelper, 29 x Vidar, 20 x LummaStealer)
ssdeep 49152:+G6we2P/3W01/65p9CepD70BIme1AWwYg015Y5vl5zytq9oB5JSZZSYu5q01ka2i:+32P/d/s
TLSH T1FF56E112BCE214BAC57AD170845697617A323CA483327BD72EA8B5692F75FD02F3E314
Reporter zbetcheckin
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'263
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
86178014e457120d9dc6f6e27453338c
Verdict:
No threats detected
Analysis date:
2021-08-09 04:24:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/89309b9e-dfb8-4576-a1e0-d757028d1456

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/177350/
Detection(s):
Win.Malware.Bulz-9847817-0
Create hunting rule

Win.Malware.ServHelper-9874966-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Forced system process termination
Sending a UDP request
Creating a file in the Windows subdirectories
Launching the process to interact with network services
Running batch commands
Launching a service
Loading a system driver
Creating a file
Connection attempt
Sending a custom TCP request
DNS request
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Enabling autorun for a service
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.
Malware family:
Raccoon Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b107f8f9-4b41-4bf3-ba25-daebdae9e3d8
Result
Threat name:
SERVHELPER RanzyLocker
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/828956
Signature
Adds a new user with administrator rights
Antivirus detection for dropped file
Bypasses PowerShell execution policy
Contains functionality to start a terminal service
Creates a Windows Service pointing to an executable in C:\Windows
Detected SERVHELPER
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Powershell drops PE file
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Hurricane Panda Activity
Sigma detected: Suspicious Csc.exe Source File Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Uses cmd line tools excessively to alter registry or file data
Yara detected Costura Assembly Loader
Yara detected RanzyLocker Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 461387 Sample: ej8XsshbQq Startdate: 09/08/2021 Architecture: WINDOWS Score: 100 85 sadiviai9d9asd.xyz 2->85 87 raw.githubusercontent.com 2->87 91 Antivirus detection for dropped file 2->91 93 Multi AV Scanner detection for dropped file 2->93 95 Multi AV Scanner detection for submitted file 2->95 97 7 other signatures 2->97 11 ej8XsshbQq.exe 4 2->11         started        14 cmd.exe 2->14         started        16 cmd.exe 2->16         started        18 3 other processes 2->18 signatures3 process4 signatures5 111 Bypasses PowerShell execution policy 11->111 113 Queries memory information (via WMI often done to detect virtual machines) 11->113 20 powershell.exe 67 11->20         started        25 net.exe 14->25         started        27 conhost.exe 14->27         started        29 net.exe 16->29         started        31 conhost.exe 16->31         started        33 net.exe 18->33         started        35 conhost.exe 18->35         started        37 conhost.exe 18->37         started        39 net.exe 18->39         started        process6 dnsIp7 89 asbza.cn 206.188.197.227, 49744, 80 DEFENSE-NETUS United States 20->89 77 C:\Windows\Branding\mediasvc.png, PE32+ 20->77 dropped 79 C:\Windows\Branding\mediasrv.png, PE32+ 20->79 dropped 81 C:\Users\user\AppData\...\sgsxxna5.cmdline, UTF-8 20->81 dropped 99 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 20->99 101 Uses cmd line tools excessively to alter registry or file data 20->101 103 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 20->103 105 2 other signatures 20->105 41 powershell.exe 20->41         started        44 reg.exe 20->44         started        46 cmd.exe 20->46         started        54 8 other processes 20->54 48 net1.exe 25->48         started        50 net1.exe 29->50         started        52 net1.exe 33->52         started        file8 signatures9 process10 file11 107 Detected SERVHELPER 41->107 57 conhost.exe 41->57         started        109 Creates a Windows Service pointing to an executable in C:\Windows 44->109 59 cmd.exe 46->59         started        83 C:\Users\user\AppData\Local\...\sgsxxna5.dll, PE32 54->83 dropped 61 cmd.exe 54->61         started        63 cvtres.exe 54->63         started        65 conhost.exe 54->65         started        67 2 other processes 54->67 signatures12 process13 process14 69 net.exe 59->69         started        71 net.exe 61->71         started        process15 73 net1.exe 69->73         started        75 net1.exe 71->75         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8/
Threat name:
Win64.Trojan.Mamson
Create hunting rule
Status:
Malicious
First seen:
2021-08-03 20:17:24 UTC
AV detection:
26 of 47 (55.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2va3t7y722ebrk6z2d3qszxjppvkxaw5nozs2zswn66w2zl7x7ma._file
Result
Malware family:
servhelper
Create hunting rule
Score:
  10/10
Tags:
family:servhelper backdoor discovery exploit persistence suricata trojan upx
Link:
https://tria.ge/reports/210809-tdzn1g2rps/
Behaviour
Modifies data under HKEY_USERS
Modifies registry key
Modifies system certificate store
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
suricata: ET MALWARE ServHelper CnC Inital Checkin
Malware Config
Dropper Extraction:
https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1
Unpacked files
SH256 hash:
d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8
MD5 hash:
86178014e457120d9dc6f6e27453338c
SHA1 hash:
16ab38c0e9c4516532f9d111523e948a6311bfc0
Link:
https://www.unpac.me/results/d8758085-cae0-4d4e-a83e-66d3ef76d66e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/d541b9ff1fd6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8

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:GoBinTest
Create hunting rule
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:INDICATOR_TOOL_GoCLR
Create hunting rule
Author:ditekSHen
Description:Detects binaries utilizing Go-CLR for hosting the CLR in a Go process and using it to execute a DLL from disk or an assembly from memory

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ServHelper

Executable exe d541b9ff1fd68818abd9d0f70966e97beaab82dd6bb32d66566fbd6d657fbfd8

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1518058/
Cape
Cape
https://www.capesandbox.com/analysis/177350/

Comments


Avatar
zbet commented on 2021-08-09 04:20:21 UTC

url : hxxp://223.252.173.9/123456543256/dcj83r7fy7328.exe