MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa. 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 7 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
SHA3-384 hash: fa338c28ce6d002690be06e3d8821e8ee65c1839e64cf5f26ac9d1ba1962ea0ac4829fb18ee9c0a000c4a126d0945791
SHA1 hash: cba5bc5d238ffa84cadb81d8ac65c81c289ec74a
MD5 hash: 3cb66d271255d59945381fdc6fab9b91
humanhash: gee-iowa-aspen-pennsylvania
File name:3cb66d271255d59945381fdc6fab9b91
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'203'392 bytes
First seen:2021-08-20 20:45:45 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:ZvAR1erb/TkvO90dL3BmAFd4A64nsfJibC5IaYNPk6bs3xwXmUGzDrQMHLPSZaaH:ZvQpbwmAQQQQQQQQQQQQQ
Threatray 141 similar samples on MalwareBazaar
TLSH T1C556F107BC9064B9C9E5E23289B592923731B489073937C72F95A6BB2F777C41E353A0
Reporter zbetcheckin
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'244
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3cb66d271255d59945381fdc6fab9b91
Verdict:
No threats detected
Analysis date:
2021-08-20 20:48:14 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d7ae138d-5f22-4973-9677-1c00d3eb0330

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/181040/
Detection(s):
Win.Malware.Bulz-9847817-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
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
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/2e05d831-15cd-417d-8766-b7a7171d6e8f
Result
Threat name:
SERVHELPER
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/836685
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 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: 469114 Sample: 8sfaZGDxDo Startdate: 20/08/2021 Architecture: WINDOWS Score: 100 79 sasf6asf683jfsd.xyz 2->79 81 raw.githubusercontent.com 2->81 85 Antivirus detection for dropped file 2->85 87 Multi AV Scanner detection for dropped file 2->87 89 Multi AV Scanner detection for submitted file 2->89 91 7 other signatures 2->91 11 8sfaZGDxDo.exe 4 2->11         started        14 cmd.exe 2->14         started        16 cmd.exe 2->16         started        18 2 other processes 2->18 signatures3 process4 signatures5 105 Bypasses PowerShell execution policy 11->105 107 Queries memory information (via WMI often done to detect virtual machines) 11->107 20 powershell.exe 66 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 conhost.exe 18->33         started        35 net.exe 18->35         started        process6 dnsIp7 83 asbza.cn 206.188.197.227, 49724, 80 DEFENSE-NETUS United States 20->83 73 C:\Windows\Branding\mediasvc.png, PE32+ 20->73 dropped 75 C:\Windows\Branding\mediasrv.png, PE32+ 20->75 dropped 77 C:\Users\user\AppData\...\icj0asew.cmdline, UTF-8 20->77 dropped 97 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 20->97 99 Uses cmd line tools excessively to alter registry or file data 20->99 101 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 20->101 103 2 other signatures 20->103 37 powershell.exe 20->37         started        40 reg.exe 20->40         started        42 cmd.exe 20->42         started        48 8 other processes 20->48 44 net1.exe 25->44         started        46 net1.exe 29->46         started        file8 signatures9 process10 file11 93 Detected SERVHELPER 37->93 51 conhost.exe 37->51         started        95 Creates a Windows Service pointing to an executable in C:\Windows 40->95 53 cmd.exe 42->53         started        71 C:\Users\user\AppData\Local\...\icj0asew.dll, PE32 48->71 dropped 55 cmd.exe 48->55         started        57 cvtres.exe 48->57         started        59 conhost.exe 48->59         started        61 2 other processes 48->61 signatures12 process13 process14 63 net.exe 53->63         started        65 net.exe 55->65         started        process15 67 net1.exe 63->67         started        69 net1.exe 65->69         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa/
Threat name:
Win64.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2021-08-19 03:46:03 UTC
AV detection:
22 of 47 (46.81%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lei22crpf53mxzxihnmlswwiecxorc37wn7ac4tvxu4yjm5zfp5a._file
Verdict:
malicious
Similar samples:
266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce
ServHelper
58514fa7288607858aae17799ded4bb96d5f9b78733ad1ca2cece597d5516d44
ServHelper
6c4aab4c3bd1ba8f77a781d70ecbc1b4c7dfd9d3c7ad60158fb8d35d1d4246e2
ServHelper
6eca26fcfabbb12c6a37eb689de222e75b31574dd25e7fd3d8b446d700c40133
ServHelper
9d2a3042c4e2d68df7a39cd7efae7c64f2b7ed5ae507bac9282e154591757724
ServHelper
be9c5e5ce6d4544e6bddbd47c26873fe0c33414086824b1d4968a638184a8a7c
ServHelper
d4989171b0fe1cc05ae35c3ce1f779f1ed190cb194c68595586cad6694aa8e64
ServHelper
e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9
ServHelper
eb02c967fb3feaf5504a78de8a7e0513c2c4e52ddf2243bfbcb10e83954baaad
ServHelper
+ 131 additional samples on MalwareBazaar
Result
Malware family:
servhelper
Create hunting rule
Score:
  10/10
Tags:
family:servhelper backdoor discovery exploit persistence trojan upx
Link:
https://tria.ge/reports/210820-lqplm8qh7x/
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
Malware Config
Dropper Extraction:
https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1
Unpacked files
SH256 hash:
5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
MD5 hash:
3cb66d271255d59945381fdc6fab9b91
SHA1 hash:
cba5bc5d238ffa84cadb81d8ac65c81c289ec74a
Link:
https://www.unpac.me/results/0b479189-1aca-4d55-91af-6d2fb1e69b02/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.30
Link:
https://yomi.yoroi.company/submissions/5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa

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
Rule name:susp_winsvc_upx
Create hunting rule
Author:SBousseaden
Description:broad hunt for any PE exporting ServiceMain API and upx packed
Rule name:win_servhelper_auto
Create hunting rule
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

ServHelper

Executable exe 5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1550031/
Cape
Cape
https://www.capesandbox.com/analysis/181040/

Comments


Avatar
zbet commented on 2021-08-20 20:45:46 UTC

url : hxxp://223.252.173.91/7kyholrf9ji5t9j6tg/vmv4r9rk4ejd829w0rkk5/6tigjr8i4rjfrghr.exe