MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8779c8ac97c45254bc243e2ee79b436d1a96bc56885dcaa72c4837790b2071fc. 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 6 File information Comments

SHA256 hash: 8779c8ac97c45254bc243e2ee79b436d1a96bc56885dcaa72c4837790b2071fc
SHA3-384 hash: b06622b705cf290d8c8659a1924b8472c85d82815d88797f1ba273eeca952c4681b215d0fe9d6e66c4a111ae3c3f6c1b
SHA1 hash: 52d3d55364d8c4d350231d38bfe6eb156cf8473f
MD5 hash: 1e9f45329ffece31382bb884367f58df
humanhash: south-ten-thirteen-mirror
File name:1e9f45329ffece31382bb884367f58df.exe
Download: download sample
Signature ServHelper
File size:6'340'608 bytes
First seen:2021-04-06 15:25:57 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 49152:4yH0ZgeTfUsbBZvw5NpJX9ZtYXvQNp+cOj/jxPvgjehDeksrvFuigy3fZPogU/vq:4ZfTfNbX3n
Threatray 64 similar samples on MalwareBazaar
TLSH B856E012BCD214FAC17AE1704596A3617A713CA5C7323BD32E94A6AA1BB5FD42F3D310
Reporter abuse_ch
Tags:exe ServHelper


Avatar
abuse_ch
ServHelper C2:
https://afsifufufgg42.cn/

Intelligence


File Origin
# of uploads :
1
# of downloads :
1'672
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1e9f45329ffece31382bb884367f58df.exe
Verdict:
No threats detected
Analysis date:
2021-04-06 15:30:14 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the system32 subdirectories
Modifying a system executable file
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
Using the Windows Management Instrumentation requests
Forced system process termination
Launching the process to interact with network services
Running batch commands
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.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
84 / 100
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
Powershell drops PE file
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Sigma detected: Dot net compiler compiles file from suspicious location
Uses cmd line tools excessively to alter registry or file data
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 382805 Sample: 1zZc8MDCDz.exe Startdate: 06/04/2021 Architecture: WINDOWS Score: 84 53 Antivirus detection for dropped file 2->53 55 Sigma detected: Dot net compiler compiles file from suspicious location 2->55 57 Yara detected Costura Assembly Loader 2->57 10 1zZc8MDCDz.exe 5 2->10         started        process3 signatures4 59 Bypasses PowerShell execution policy 10->59 13 powershell.exe 45 10->13         started        process5 file6 45 C:\Windows\Branding\mediasvc.png, PE32+ 13->45 dropped 47 C:\Windows\Branding\mediasrv.png, PE32+ 13->47 dropped 49 C:\Users\user\AppData\...\bqctvo3f.cmdline, UTF-8 13->49 dropped 61 Uses cmd line tools excessively to alter registry or file data 13->61 63 Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes) 13->63 65 Adds a new user with administrator rights 13->65 67 Powershell drops PE file 13->67 17 reg.exe 13->17         started        20 cmd.exe 13->20         started        22 csc.exe 13->22         started        25 7 other processes 13->25 signatures7 process8 file9 51 Creates a Windows Service pointing to an executable in C:\Windows 17->51 27 cmd.exe 20->27         started        43 C:\Users\user\AppData\Local\...\bqctvo3f.dll, PE32 22->43 dropped 29 cvtres.exe 22->29         started        31 conhost.exe 25->31         started        33 conhost.exe 25->33         started        35 conhost.exe 25->35         started        37 net1.exe 25->37         started        signatures10 process11 process12 39 net.exe 27->39         started        process13 41 net1.exe 39->41         started       
Threat name:
Win64.Trojan.WinGoGoCLR
Status:
Malicious
First seen:
2021-04-06 15:26:07 UTC
AV detection:
16 of 48 (33.33%)
Threat level:
  5/5
Result
Malware family:
servhelper
Score:
  10/10
Tags:
family:servhelper backdoor discovery exploit persistence trojan upx
Behaviour
Delays execution with timeout.exe
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
Unpacked files
SH256 hash:
8779c8ac97c45254bc243e2ee79b436d1a96bc56885dcaa72c4837790b2071fc
MD5 hash:
1e9f45329ffece31382bb884367f58df
SHA1 hash:
52d3d55364d8c4d350231d38bfe6eb156cf8473f
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_TOOL_GoCLR
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
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
Author:SBousseaden
Description:broad hunt for any PE exporting ServiceMain API and upx packed
Rule name:Warp
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Author:Seth Hardy
Description:Warp Identifying Strings
Rule name:win_servhelper_auto
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 8779c8ac97c45254bc243e2ee79b436d1a96bc56885dcaa72c4837790b2071fc

(this sample)

  
Delivery method
Distributed via web download

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