MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63
SHA3-384 hash: edccccd03c95e60b24ded7cf0680514b375e07bf8bc6b0112b41e25457e47cebb9dfe005acd1f5abf9a4a7259484ac92
SHA1 hash: fd96f6abb4517f9c8d8add8cf46a88c2dc12d247
MD5 hash: 52abd9b0522751f14763b92baf4afa37
humanhash: mobile-kansas-december-burger
File name:52abd9b0522751f14763b92baf4afa37.exe
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'321'664 bytes
First seen:2021-05-29 07:25:56 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:BwJaf3oVkfyl5tAmJr68tWh52k00IIXeoLrnV0aivaoJGxF9KyBpPaRh84mw7ueN:B7f3ooy+
Threatray 116 similar samples on MalwareBazaar
TLSH 2256F011BCE218FAC57AE170845697617A723CA883357BE72ED8756E1A74FD02B3E310
Reporter abuse_ch
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'644
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
52abd9b0522751f14763b92baf4afa37.exe
Verdict:
No threats detected
Analysis date:
2021-05-29 07:29:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b527c38e-3373-48ac-9c06-775f6e826169

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/163151/
Detection(s):
Win.Malware.Bulz-9847817-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Launching a process
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
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:
evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/794213
Signature
Adds a new user with administrator rights
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 submitted file
Powershell drops PE file
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Sigma detected: Hurricane Panda Activity
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: 426609 Sample: 3fsPjDdQeT.exe Startdate: 29/05/2021 Architecture: WINDOWS Score: 92 48 Antivirus detection for dropped file 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Sigma detected: Hurricane Panda Activity 2->52 54 2 other signatures 2->54 8 3fsPjDdQeT.exe 4 2->8         started        process3 signatures4 56 Bypasses PowerShell execution policy 8->56 11 powershell.exe 45 8->11         started        process5 dnsIp6 44 192.168.2.1 unknown unknown 11->44 38 C:\Windows\Branding\mediasvc.png, PE32+ 11->38 dropped 40 C:\Windows\Branding\mediasrv.png, PE32+ 11->40 dropped 42 C:\Users\user\AppData\...\j3ojtltx.cmdline, UTF-8 11->42 dropped 58 Uses cmd line tools excessively to alter registry or file data 11->58 60 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 11->60 62 Adds a new user with administrator rights 11->62 64 Powershell drops PE file 11->64 16 reg.exe 11->16         started        19 csc.exe 11->19         started        22 powershell.exe 11->22         started        24 7 other processes 11->24 file7 signatures8 process9 file10 46 Creates a Windows Service pointing to an executable in C:\Windows 16->46 36 C:\Users\user\AppData\Local\...\j3ojtltx.dll, PE32 19->36 dropped 26 cvtres.exe 19->26         started        28 conhost.exe 22->28         started        30 conhost.exe 24->30         started        32 conhost.exe 24->32         started        34 net1.exe 24->34         started        signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63/
Threat name:
Win64.Trojan.WinGoGoCLR
Create hunting rule
Status:
Malicious
First seen:
2021-05-28 23:37:14 UTC
AV detection:
11 of 28 (39.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zasz7ptjsurzyivjddyi43g6gdaydjzf5gq4g6nnx326z66tlvrq._file
Verdict:
malicious
Similar samples:
4411d8a69230284cb6238a2e8cf29878afbbef90935bb94d1a6f8d59af30c6cc
ServHelper
5090fa74f83368086c1d197dcd28e51f8b36cd5d2c18e9a964d925a445ea0066
ServHelper
6966ad7c975ddb2bddcd4b4ed59fbf594ea0efbf2ecf5379cb288a861ad135c6
ServHelper
6eca26fcfabbb12c6a37eb689de222e75b31574dd25e7fd3d8b446d700c40133
ServHelper
706a3b4438e7b883d8c3cd66ffabfbb3e3495b3b7c6f9b48adf7a5c8cdd0c3c1
ServHelper
80271a13696df77f092c3b6abce154f98e83f5840c64b610af7ae83cfe711482
ServHelper
d4989171b0fe1cc05ae35c3ce1f779f1ed190cb194c68595586cad6694aa8e64
ServHelper
e93ad362b1d92779ef40523def774c76cb59ee9bba560f88679063404a5999e9
ServHelper
ec85f413a53709831c4f1774f78d009dcf2f531006484a3b396992703bba2da1
ServHelper
fbf79b0e54a606ba74f107e39790bccf1fce6a4f9be65353f97b2a03b43c1c6f
ServHelper
+ 106 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/210529-p5lnp3raqj/
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
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/c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63

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: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 c8259fbe6995239c22a918f08e6cde30c181a725e9a1c379adbef5ecfbd35d63

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/163151/
  
URLhaus
https://urlhaus.abuse.ch/url/1284033/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1301474/

Comments