MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce. 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: 266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce
SHA3-384 hash: 15f0e32292837738688821e8d01ceb3d9199b3b019d7b990c8e8092221a2b5bce7a8db8f77469c3ade81785fbdab4860
SHA1 hash: 423785b67d20f4f5056ff6d9e34fda3c72a03bd4
MD5 hash: 87dd0632a95ca24443f8c6363bc055e6
humanhash: one-victor-music-burger
File name:87dd0632a95ca24443f8c6363bc055e6
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'203'392 bytes
First seen:2021-08-19 15:13:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c7269d59926fa4252270f407e4dab043 (45 x Hive, 23 x ServHelper, 22 x CobaltStrike)
ssdeep 49152:uM+J9Grb/TkvO90dL3BmAFd4A64nsfJte35ke4/Dirx5WgzPpvYhWQ2duQNH9ATA:uM++eamAQQQQQQQQQQQQQ
Threatray 139 similar samples on MalwareBazaar
TLSH T13E56F117BC9564B9C9E9D232897592A13731B859033937C73F84A6BA2F777C01E393A0
Reporter zbetcheckin
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'261
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
87dd0632a95ca24443f8c6363bc055e6
Verdict:
No threats detected
Analysis date:
2021-08-19 15:16:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d7de534b-7d9a-4495-870e-f3c8832f5bdf

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/180730/
Detection(s):
Win.Malware.Bulz-9847817-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP 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
Forced system process termination
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
DNS request
Connection attempt
Sending a custom TCP request
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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9399375c-b04f-4210-9316-3f54f30af829
Result
Threat name:
SERVHELPER
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/835890
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
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 PowerShell Invocations - Specific
Sigma detected: Suspicious Script Execution From Temp Folder
Uses cmd line tools excessively to alter registry or file data
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 468322 Sample: RrwKXQj5Wn Startdate: 19/08/2021 Architecture: WINDOWS Score: 100 85 raw.githubusercontent.com 2->85 87 prda.aadg.msidentity.com 2->87 89 aasouv636d.cn 2->89 93 Antivirus detection for dropped file 2->93 95 Multi AV Scanner detection for dropped file 2->95 97 Multi AV Scanner detection for submitted file 2->97 99 6 other signatures 2->99 11 RrwKXQj5Wn.exe 4 2->11         started        14 cmd.exe 2->14         started        16 cmd.exe 2->16         started        18 6 other processes 2->18 signatures3 process4 signatures5 113 Bypasses PowerShell execution policy 11->113 115 Queries memory information (via WMI often done to detect virtual machines) 11->115 20 powershell.exe 67 11->20         started        117 Adds a new user with administrator rights 14->117 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 net.exe 18->35         started        37 net.exe 18->37         started        39 5 other processes 18->39 process6 dnsIp7 91 asbza.cn 206.188.197.227, 49745, 80 DEFENSE-NETUS United States 20->91 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\...\0k21nw1e.cmdline, UTF-8 20->81 dropped 101 Detected SERVHELPER 20->101 103 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 20->103 105 Uses cmd line tools excessively to alter registry or file data 20->105 107 3 other signatures 20->107 41 cmd.exe 20->41         started        44 reg.exe 20->44         started        58 9 other processes 20->58 46 net1.exe 25->46         started        48 net1.exe 29->48         started        50 net1.exe 33->50         started        52 net1.exe 35->52         started        54 net1.exe 37->54         started        56 net1.exe 39->56         started        file8 signatures9 process10 file11 109 Adds a new user with administrator rights 41->109 61 cmd.exe 41->61         started        111 Creates a Windows Service pointing to an executable in C:\Windows 44->111 83 C:\Users\user\AppData\Local\...\0k21nw1e.dll, PE32 58->83 dropped 63 cmd.exe 58->63         started        65 cvtres.exe 58->65         started        67 conhost.exe 58->67         started        69 4 other processes 58->69 signatures12 process13 process14 71 net.exe 61->71         started        73 net.exe 63->73         started        process15 75 net1.exe 71->75         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce/
Threat name:
Win64.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-08-11 14:07:39 UTC
AV detection:
28 of 47 (59.57%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
6eca26fcfabbb12c6a37eb689de222e75b31574dd25e7fd3d8b446d700c40133
ServHelper
9d2a3042c4e2d68df7a39cd7efae7c64f2b7ed5ae507bac9282e154591757724
ServHelper
a5ce80281a88db0129bcdadd338ccf21d07b4b960ea92dc3b1861b7276d354ec
ServHelper
ae1c9d454905ed43654f99b1ea1e8ecc3ae08eb75c3860f46b285ce724ae5e4d
ServHelper
be9c5e5ce6d4544e6bddbd47c26873fe0c33414086824b1d4968a638184a8a7c
ServHelper
d4989171b0fe1cc05ae35c3ce1f779f1ed190cb194c68595586cad6694aa8e64
ServHelper
f4adc9d5df2c5543d17faa940efced9980a87b98a8858ccc3547fb51e154ecaa
ServHelper
f60f32ec899bcb92fd50491a8c32f0548afbd4dc02462dfa373d484b4b161a86
ServHelper
+ 129 additional samples on MalwareBazaar
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/210819-gkjhey53ze/
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:
266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce
MD5 hash:
87dd0632a95ca24443f8c6363bc055e6
SHA1 hash:
423785b67d20f4f5056ff6d9e34fda3c72a03bd4
Link:
https://www.unpac.me/results/39df69c4-b096-46e8-8af9-77ff7e10b17a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce

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 266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/180730/

Comments


Avatar
zbet commented on 2021-08-19 15:13:15 UTC

url : hxxp://97do.kowashitekata.ru/373032118.exe