MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7. 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: 7


Intelligence 7 IOCs YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7
SHA3-384 hash: 6219e25501d4aaa59b25b440d9956575be0f7596dcf8d11ebec3b67cb2218edf88b7ca260e2247060a08baeaa17f6e34
SHA1 hash: 7b6a049d934368099ec559159464ca8827b92c3b
MD5 hash: b5d53c4dbacaa04350366e05b7222e7f
humanhash: uncle-mobile-jersey-fifteen
File name:b5d53c4dbacaa04350366e05b7222e7f
Download: download sample
Signature ServHelper
Create hunting rule
File size:6'203'904 bytes
First seen:2021-09-05 21:48:37 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:ozpUQirb/TkvO90dL3BmAFd4A64nsfJBYX5K/kh9Td1aDwQOq96GCXi06wDgKq3c:ozfiYUmAQQQQQQQQQQQQQ
Threatray 155 similar samples on MalwareBazaar
TLSH T1F556F107BCA474B9D9E9D231897592913732B459033937C32B55A6BE2FBB7C40E393A0
Reporter zbetcheckin
Tags:exe ServHelper

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'227
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b5d53c4dbacaa04350366e05b7222e7f
Verdict:
No threats detected
Analysis date:
2021-09-05 21:49:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1337e617-a899-44b7-a206-b790329120d9

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/185483/
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
Sending a UDP request
Creating a process with a hidden window
Deleting a recently created file
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
DNS request
Connection attempt
Sending a custom TCP request
Enabling autorun for a service
Downloading the file
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a29b4d33-7a18-4ebd-9078-54bf8e6db81a
Result
Threat name:
SERVHELPER
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/845620
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: 478051 Sample: 9Fa7nTQnI6 Startdate: 05/09/2021 Architecture: WINDOWS Score: 100 73 zuvujvhuaif.xyz 2->73 75 sasf6asf683jfsd.xyz 2->75 77 2 other IPs or domains 2->77 81 Antivirus detection for dropped file 2->81 83 Multi AV Scanner detection for dropped file 2->83 85 Multi AV Scanner detection for submitted file 2->85 87 7 other signatures 2->87 11 9Fa7nTQnI6.exe 4 2->11         started        14 cmd.exe 2->14         started        16 rdpdr.sys 2->16         started        18 cmd.exe 2->18         started        signatures3 process4 signatures5 97 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 11->97 99 Bypasses PowerShell execution policy 11->99 101 Queries memory information (via WMI often done to detect virtual machines) 11->101 20 powershell.exe 65 11->20         started        25 conhost.exe 14->25         started        27 net.exe 14->27         started        process6 dnsIp7 79 asbza.cn 206.188.197.227, 49766, 80 DEFENSE-NETUS United States 20->79 67 C:\Windows\Branding\mediasvc.png, PE32+ 20->67 dropped 69 C:\Windows\Branding\mediasrv.png, PE32+ 20->69 dropped 71 C:\Users\user\AppData\...\qye4fbum.cmdline, UTF-8 20->71 dropped 89 Detected SERVHELPER 20->89 91 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 20->91 93 Uses cmd line tools excessively to alter registry or file data 20->93 95 3 other signatures 20->95 29 reg.exe 20->29         started        32 powershell.exe 20->32         started        34 cmd.exe 20->34         started        36 8 other processes 20->36 file8 signatures9 process10 file11 103 Creates a Windows Service pointing to an executable in C:\Windows 29->103 39 net.exe 32->39         started        41 conhost.exe 32->41         started        43 conhost.exe 32->43         started        45 cmd.exe 34->45         started        65 C:\Users\user\AppData\Local\...\qye4fbum.dll, PE32 36->65 dropped 47 cmd.exe 36->47         started        49 cvtres.exe 36->49         started        51 conhost.exe 36->51         started        53 2 other processes 36->53 signatures12 process13 process14 55 net1.exe 39->55         started        57 net.exe 45->57         started        59 net.exe 47->59         started        process15 61 net1.exe 57->61         started        63 net1.exe 59->63         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7/
Threat name:
Win64.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-08-31 22:46:55 UTC
AV detection:
25 of 43 (58.14%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
255141a430ed2bbda653b5ab18acdd8dcca5a39cf8c2d1fa938445e31ecf38e5
ServHelper
266562d82899806c0eafc3ca72216e78d41403dd24effebd31d7635922ba96ce
ServHelper
5911ad0a2f2f76cbe6e83b58b95ac820aee88b7fb37e017275bd3984b3b92bfa
ServHelper
6eca26fcfabbb12c6a37eb689de222e75b31574dd25e7fd3d8b446d700c40133
ServHelper
ae1c9d454905ed43654f99b1ea1e8ecc3ae08eb75c3860f46b285ce724ae5e4d
ServHelper
ba15a8b7d1ecc6348ee4806b0903afdf5917a595a909ce529e85cacd197c6e77
ServHelper
be9c5e5ce6d4544e6bddbd47c26873fe0c33414086824b1d4968a638184a8a7c
ServHelper
fd8f5bd06d288207635503abf28da66ec823359d18c6f887750831035d51e9d6
ServHelper
+ 145 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/210905-1pcbaschhj/
Unpacked files
SH256 hash:
ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7
MD5 hash:
b5d53c4dbacaa04350366e05b7222e7f
SHA1 hash:
7b6a049d934368099ec559159464ca8827b92c3b
Link:
https://www.unpac.me/results/2bcad1e2-4bbd-444d-b244-8671ddd81eab/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ff257a7b22ba/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7

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: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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ServHelper

Executable exe ff257a7b22badf7948f21dd5dfaf008dd72895aa63bc6a1c5838cbe26036bbe7

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/185483/
  
URLhaus
https://urlhaus.abuse.ch/url/1595253/

Comments


Avatar
zbet commented on 2021-09-05 21:48:38 UTC

url : hxxp://223.252.173.63/h79km75/9ijhg5r/semple/7iyjgopen.exe