MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9
SHA3-384 hash: df0c9b550f614dc2842a24ec31c49efd1766e13e170a006186b21365162584587b164492dd4bffc79cea63f6dbf9d635
SHA1 hash: 724fc4f1a2c27ba4987a58d6169677b740788d9a
MD5 hash: b23f257eddfbe8de4150e590a9328293
humanhash: glucose-illinois-mirror-quiet
File name:b23f257eddfbe8de4150e590a9328293.exe
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'321'152 bytes
First seen:2021-05-28 19:07:07 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:cldavIRFjbyf5Jjugr41Jx3ugmVa1NAJ39RVZ2MSOxzv5sGj3BSQKqWKs92VThLm:cCvIRxy0
Threatray 112 similar samples on MalwareBazaar
TLSH 9156E012FCE218FAC5BAE170845693A27A713C6883317BD72E94756E1B71FD42A3E314
Reporter abuse_ch
Tags:exe ServHelper


Avatar
abuse_ch
ServHelper C2:
https://asdjausg.cn/

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'528
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b23f257eddfbe8de4150e590a9328293.exe
Verdict:
No threats detected
Analysis date:
2021-05-28 19:42:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a0369813-c33b-4826-881d-fed3e0ae0d9f

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/163028/
Detection(s):
Win.Malware.Bulz-9847817-0
Create hunting rule

Win.Trojan.Goclr-9849713-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Sending a UDP request
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
Downloading the file
Enabling autorun for a service
Result
Verdict:
SUSPICIOUS
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:
go-clr
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ae0bedf5-7764-4778-83c3-399972161145
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/794023
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 dropped file
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 426419 Sample: jiqVAxnzMe.exe Startdate: 28/05/2021 Architecture: WINDOWS Score: 92 50 Antivirus detection for dropped file 2->50 52 Multi AV Scanner detection for dropped file 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 2 other signatures 2->56 9 jiqVAxnzMe.exe 4 2->9         started        process3 signatures4 58 Bypasses PowerShell execution policy 9->58 12 powershell.exe 45 9->12         started        process5 file6 42 C:\Windows\Branding\mediasvc.png, PE32+ 12->42 dropped 44 C:\Windows\Branding\mediasrv.png, PE32+ 12->44 dropped 46 C:\Users\user\AppData\...\hk3mircj.cmdline, UTF-8 12->46 dropped 60 Uses cmd line tools excessively to alter registry or file data 12->60 62 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 12->62 64 Powershell drops PE file 12->64 16 reg.exe 12->16         started        19 csc.exe 12->19         started        22 cmd.exe 12->22         started        24 7 other processes 12->24 signatures7 process8 file9 48 Creates a Windows Service pointing to an executable in C:\Windows 16->48 40 C:\Users\user\AppData\Local\...\hk3mircj.dll, PE32 19->40 dropped 26 cvtres.exe 19->26         started        28 cmd.exe 22->28         started        30 conhost.exe 24->30         started        32 conhost.exe 24->32         started        34 conhost.exe 24->34         started        36 net1.exe 24->36         started        signatures10 process11 process12 38 net.exe 28->38         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9/
Threat name:
ByteCode-MSIL.Trojan.WinGoGoCLR
Create hunting rule
Status:
Malicious
First seen:
2021-05-28 17:18:07 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5e5ngyvr3etxt32aki66652mo3fvt3u3xjla7cdhsbruasszthuq._file
Verdict:
malicious
Similar samples:
4411d8a69230284cb6238a2e8cf29878afbbef90935bb94d1a6f8d59af30c6cc
ServHelper
5090fa74f83368086c1d197dcd28e51f8b36cd5d2c18e9a964d925a445ea0066
ServHelper
6890d24b841f053f3fa975836a3f37e25370942c935acc3ffa9965ae55137e25
ServHelper
71599788e1da3359b99ada8c3b84b96a9741c1f68550c09b0345d979cdc4b8a6
ServHelper
80271a13696df77f092c3b6abce154f98e83f5840c64b610af7ae83cfe711482
ServHelper
8962a3b3d7ed877d9642f72ad224101c528f965de1facb3ee87276cb144dfaf6
ServHelper
a27fa7724da938df040a3e535f2be9cec4d6d93bd4f2e5ec2ba79560f84cb69c
ServHelper
a6e43031567484437341b50ea0c165ad416ffa629e2951a0e82844dcfb27e408
ServHelper
c302411319308e836e2eac6893ba39b513226d19d874ce9ff7fbbbd07316aba3
ServHelper
d4989171b0fe1cc05ae35c3ce1f779f1ed190cb194c68595586cad6694aa8e64
ServHelper
+ 102 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/210528-ngnjplwkyn/
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
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/e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9

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
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 e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/163028/
  
URLhaus
https://urlhaus.abuse.ch/url/1284033/
  
Delivery method
Distributed via web download

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