MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c
SHA3-384 hash: c0f0972376bd34e563792e6d62e5e62254fed88e911e36f6903f565ec68652d07a3163f43c1262b9ab01aadd220f7f8a
SHA1 hash: c2468b1792e5ecef461d2d89470e8438c05cce24
MD5 hash: aa80d5960e65ac46ad446c09c1a17608
humanhash: charlie-queen-georgia-stairway
File name:aa80d5960e65ac46ad446c09c1a17608.exe
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'321'664 bytes
First seen:2021-06-03 16:36:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 4035d2883e01d64f3e7a9dccb1d63af5 (47 x ServHelper, 20 x LummaStealer, 17 x Rhadamanthys)
ssdeep 49152:qeJaWFIEavyT5gmuNLtw3vnHkqNhofom+RzWHvlk1rd4c6/3vXQLoUuLy9B6EINy:qVWFIJyR
Threatray 136 similar samples on MalwareBazaar
TLSH C656E012BCE218FAC57AE17098569B513A723CA483317BE32ED4B56D1A75FD02B3E314
Reporter abuse_ch
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'580
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9d8c7ac5f187791b701c916c35911821.exe
Verdict:
Malicious activity
Analysis date:
2021-06-03 16:40:49 UTC
Tags:
trojan stealer raccoon loader
Link:
https://app.any.run/tasks/d7b379a9-c828-4390-9f28-76d01b53c6ef

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/164471/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Sending a UDP request
Creating a process with a hidden window
Deleting a recently created file
Using the Windows Management Instrumentation requests
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
Enabling autorun for a service
Downloading the file
Result
Verdict:
UNKNOWN
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:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/796854
Signature
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
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: Suspicious Csc.exe Source File Folder
Uses cmd line tools excessively to alter registry or file data
Yara detected Costura Assembly Loader
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 429251 Sample: lx2H3ZaZjn.exe Startdate: 03/06/2021 Architecture: WINDOWS Score: 96 83 Antivirus detection for dropped file 2->83 85 Multi AV Scanner detection for submitted file 2->85 87 Yara detected Powershell download and execute 2->87 89 3 other signatures 2->89 10 lx2H3ZaZjn.exe 4 2->10         started        13 cmd.exe 2->13         started        15 cmd.exe 2->15         started        17 3 other processes 2->17 process3 signatures4 99 Bypasses PowerShell execution policy 10->99 19 powershell.exe 45 10->19         started        23 net.exe 13->23         started        25 conhost.exe 13->25         started        27 net.exe 15->27         started        29 conhost.exe 15->29         started        31 net.exe 17->31         started        33 conhost.exe 17->33         started        35 conhost.exe 17->35         started        37 net.exe 17->37         started        process5 file6 75 C:\Windows\Branding\mediasvc.png, PE32+ 19->75 dropped 77 C:\Windows\Branding\mediasrv.png, PE32+ 19->77 dropped 79 C:\Users\user\AppData\...\pujlvull.cmdline, UTF-8 19->79 dropped 91 Uses cmd line tools excessively to alter registry or file data 19->91 93 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 19->93 95 Powershell drops PE file 19->95 39 reg.exe 19->39         started        42 cmd.exe 19->42         started        44 cmd.exe 19->44         started        52 8 other processes 19->52 46 net1.exe 23->46         started        48 net1.exe 27->48         started        50 net1.exe 31->50         started        signatures7 process8 file9 97 Creates a Windows Service pointing to an executable in C:\Windows 39->97 55 cmd.exe 42->55         started        57 cmd.exe 44->57         started        81 C:\Users\user\AppData\Local\...\pujlvull.dll, PE32 52->81 dropped 59 cvtres.exe 52->59         started        61 conhost.exe 52->61         started        63 conhost.exe 52->63         started        65 2 other processes 52->65 signatures10 process11 process12 67 net.exe 55->67         started        69 net.exe 57->69         started        process13 71 net1.exe 67->71         started        73 net1.exe 69->73         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c/
Threat name:
Win64.Trojan.Hynamer
Create hunting rule
Status:
Malicious
First seen:
2021-06-03 16:37:10 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qv65zdpfm6x2dh23zerw63htnapenemvgd4qvtbf743bcjleimwa._file
Verdict:
malicious
Similar samples:
4411d8a69230284cb6238a2e8cf29878afbbef90935bb94d1a6f8d59af30c6cc
ServHelper
5090fa74f83368086c1d197dcd28e51f8b36cd5d2c18e9a964d925a445ea0066
ServHelper
6890d24b841f053f3fa975836a3f37e25370942c935acc3ffa9965ae55137e25
ServHelper
71599788e1da3359b99ada8c3b84b96a9741c1f68550c09b0345d979cdc4b8a6
ServHelper
80271a13696df77f092c3b6abce154f98e83f5840c64b610af7ae83cfe711482
ServHelper
a6e43031567484437341b50ea0c165ad416ffa629e2951a0e82844dcfb27e408
ServHelper
c302411319308e836e2eac6893ba39b513226d19d874ce9ff7fbbbd07316aba3
ServHelper
c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63
ServHelper
d4989171b0fe1cc05ae35c3ce1f779f1ed190cb194c68595586cad6694aa8e64
ServHelper
d8d3c3800a157b2b6efa4fd9f0e07901a404f8d19d3e7163f4ae31776ff7a3a2
ServHelper
+ 126 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/210603-9n2lmnekgn/
Behaviour
Modifies data under HKEY_USERS
Modifies registry key
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
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:
857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c
MD5 hash:
aa80d5960e65ac46ad446c09c1a17608
SHA1 hash:
c2468b1792e5ecef461d2d89470e8438c05cce24
Link:
https://www.unpac.me/results/106e4d18-eb55-4abf-941e-0727ea26d340/
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/857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c

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:adonunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:AD on UNIX
Rule name:crime_win32_ransom_avaddon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
Rule name:GoBinTest
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:suspicious_packer_section
Create hunting rule
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
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 857ddc8de567afa19f5bc9236f6cf3681e46919530f90acc25ff36112564432c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1315338/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/164471/

Comments