MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b. 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


StormKitty


Vendor detections: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b
SHA3-384 hash: 2b7291aebe654052477957d3e01fd5a674669fae51b5c3b8a9bec7fb43c59796d2ed84917884d598e58f8facc622f4a4
SHA1 hash: ec0998d7e46b457432a4de49b3dc8330ae892254
MD5 hash: cbfca6bac76bae78506b23ef0c5f2a20
humanhash: october-comet-oven-failed
File name:build2.exe
Download: download sample
Signature StormKitty
Create hunting rule
File size:599'552 bytes
First seen:2023-05-21 16:21:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'750 x AgentTesla, 19'654 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 12288:q5uHsKs5FNFfcaFeFOFwcGF6cmFWc0FWc8cIcKcUFJFpcNcHc7cbchFFc5cbc1cT:q5GTD+b
TLSH T10BD439817BE8DA57E2BF1779D47248015B70E04BE7A2D70F68C061B91CA2B806D177BB
TrID 39.7% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
35.8% (.RLL) Microsoft Resource Library (x86) (177572/6/26)
14.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
2.6% (.SCR) Windows screen saver (13097/50/3)
2.1% (.EXE) Win64 Executable (generic) (10523/12/4)
Reporter ULTRAFRAUD
Tags:exe StormKitty

Intelligence

File Origin
# of uploads :
1
# of downloads :
279
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
build2.exe
Verdict:
Malicious activity
Analysis date:
2023-05-21 16:22:15 UTC
Tags:
blackguard stealer
Link:
https://app.any.run/tasks/6f3f669d-b693-45ab-a14c-a8aba21f8106

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Adwarex-9851111-0
Create hunting rule

Win.Packed.Bulz-9891112-0
Create hunting rule

Win.Packed.AsyncRAT-9938103-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Creating a file
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Reading critical registry keys
Launching a process
Creating a process from a recently created file
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler.exe crypto evasive greyware hacktool installutil.exe lolbin msbuild.exe packed regasm.exe regsvcs.exe stealer vbc.exe
Link:
https://www.filescan.io/uploads/646a452b9777de4cf33afa1a/reports/048986e9-3eef-4041-ba30-39a2a3c9c379/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/323749ec-9ad8-406e-8a1d-b920b556563a
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1239083
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Drops PE files to the user root directory
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 872075 Sample: build2.exe Startdate: 22/05/2023 Architecture: WINDOWS Score: 100 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 4 other signatures 2->47 7 build2.exe 1 43 2->7         started        12 updater.exe 501 2->12         started        14 updater.exe 2->14         started        16 updater.exe 2->16         started        process3 dnsIp4 39 85.217.144.10, 9990 WS171-ASRU Bulgaria 7->39 33 C:\Users\user\updater.exe, PE32 7->33 dropped 35 C:\Users\user\AppData\...\build2.exe.log, CSV 7->35 dropped 37 C:\Users\user\AppData\...\DownloadMetadata, PDP-11 7->37 dropped 51 Drops PE files to the user root directory 7->51 18 cmd.exe 1 7->18         started        21 cmd.exe 1 7->21         started        53 Multi AV Scanner detection for dropped file 12->53 55 Tries to harvest and steal browser information (history, passwords, etc) 12->55 file5 signatures6 process7 signatures8 49 Uses schtasks.exe or at.exe to add and modify task schedules 18->49 23 conhost.exe 18->23         started        25 schtasks.exe 1 18->25         started        27 updater.exe 1 21->27         started        29 conhost.exe 21->29         started        31 timeout.exe 1 21->31         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b/
Threat name:
ByteCode-MSIL.Spyware.Stormkitty
Create hunting rule
Status:
Suspicious
First seen:
2023-04-20 01:48:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
25 of 37 (67.57%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cx7nzbxipba4cqnrcpx2mnppln6sr56psbszpjqdktgs2o5ily5q._file
Verdict:
malicious
Result
Malware family:
stormkitty
Create hunting rule
Score:
  10/10
Tags:
family:stormkitty persistence spyware stealer
Link:
https://tria.ge/reports/230521-tt757sdh5x/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
StormKitty
StormKitty payload
Unpacked files
SH256 hash:
ae90449c4ffc22b81b7d37c7796c19ca2d0d8584f45f139b69b76b003e27dea0
MD5 hash:
620c1e05fcdc20c08d721e4ab428a83d
SHA1 hash:
65c8ff28f7d81cf2d724995a9688ed956c470fdc
Link:
https://www.unpac.me/results/6c479532-fefd-4f68-8c85-5e2b4abb9bdb/
SH256 hash:
15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b
MD5 hash:
cbfca6bac76bae78506b23ef0c5f2a20
SHA1 hash:
ec0998d7e46b457432a4de49b3dc8330ae892254
Link:
https://www.unpac.me/results/6c479532-fefd-4f68-8c85-5e2b4abb9bdb/
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/15fedc86e87841c141b113efa635ef5b7d28f7cf906597a60354cd2d3ba85e3b

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_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:MALWARE_Win_DLAgent10
Create hunting rule
Author:ditekSHen
Description:Detects known downloader agent
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Comments