MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7c2b459805c50ca9c86290e12bdeafbf35f75727d20a8975002d71f4a951259. 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


Formbook


Vendor detections: 10


Intelligence 10 IOCs YARA 17 File information Comments
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SHA256 hash: a7c2b459805c50ca9c86290e12bdeafbf35f75727d20a8975002d71f4a951259
SHA3-384 hash: f407e9602c16123cd78c5351f0d26e91fe94b1af4a16267db56c52e9087c72c6a6e43b6c391c0580e0c1a41b7dbc446e
SHA1 hash: ad23d52e1d58ab9645605eb9412442574f656afc
MD5 hash: aaa2852b465fa9e89e5a7425f139a91e
humanhash: solar-march-sixteen-autumn
File name:Request for Quotation.js
Download: download sample
Signature Formbook
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File size:1'121'233 bytes
First seen:2024-06-21 05:30:31 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:Bqh3t0LywhcJO8tpLvIkbdDlKpdL1eOSgIs2wnu1:BkzlET7IZ
TLSH T18635E13695E23664EA5E4660342E2D896C148F4FD3B3898CF1803ABC9E06DCCDF959F5
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
364
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Generic-EXE.UNOFFICIAL
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SecuriteInfo.com.PUA.Base64EXE-2.UNOFFICIAL
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Sanesecurity.Malware.26270.JsHeur.UNOFFICIAL
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Sanesecurity.Malware.25779.JsHeur.UNOFFICIAL
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Sanesecurity.Malware.26271.JsHeur.UNOFFICIAL
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Sanesecurity.Malware.25834.JsHeur.UNOFFICIAL
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Js.Downloader.Agent-9914219-0
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Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6675117fa9467d5d6f161c22win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Network Dexter
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dropper obfuscated packed
Link:
https://www.filescan.io/uploads/6675101c9fd5f9d592103f81/reports/322825f9-d0c8-49d4-a6f1-1f4f7cdb5245/overview
Verdict:
Malicious
Labled as:
GT:JS.Cbum.1
Link:
https://www.hybrid-analysis.com/sample/a7c2b459805c50ca9c86290e12bdeafbf35f75727d20a8975002d71f4a951259
Result
Verdict:
MALICIOUS
Details
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Result
Threat name:
AgentTesla
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1460569
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
JScript performs obfuscated calls to suspicious functions
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1460569 Sample: Request for Quotation.js Startdate: 21/06/2024 Architecture: WINDOWS Score: 100 40 s82.gocheapweb.com 2->40 42 ip-api.com 2->42 44 api.ipify.org 2->44 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 Antivirus / Scanner detection for submitted sample 2->74 76 9 other signatures 2->76 9 wscript.exe 1 2 2->9         started        13 dJHGTlTyiNIh.exe 5 2->13         started        signatures3 process4 file5 34 C:\Users\user\AppData\...\3DE8rUEopdv5pOU.exe, PE32 9->34 dropped 86 Benign windows process drops PE files 9->86 88 JScript performs obfuscated calls to suspicious functions 9->88 90 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->90 15 3DE8rUEopdv5pOU.exe 6 9->15         started        92 Antivirus detection for dropped file 13->92 94 Machine Learning detection for dropped file 13->94 96 Writes to foreign memory regions 13->96 98 2 other signatures 13->98 19 RegSvcs.exe 2 13->19         started        22 schtasks.exe 1 13->22         started        signatures6 process7 dnsIp8 36 C:\Users\user\AppData\...\dJHGTlTyiNIh.exe, PE32 15->36 dropped 38 C:\Users\user\AppData\Local\...\tmpF38F.tmp, XML 15->38 dropped 54 Antivirus detection for dropped file 15->54 56 Machine Learning detection for dropped file 15->56 58 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 15->58 66 4 other signatures 15->66 24 RegSvcs.exe 14 2 15->24         started        28 schtasks.exe 1 15->28         started        46 172.67.74.152, 443, 49739 CLOUDFLARENETUS United States 19->46 60 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->60 62 Tries to steal Mail credentials (via file / registry access) 19->62 64 Tries to harvest and steal ftp login credentials 19->64 68 2 other signatures 19->68 30 conhost.exe 22->30         started        file9 signatures10 process11 dnsIp12 48 ip-api.com 208.95.112.1, 49735, 49740, 80 TUT-ASUS United States 24->48 50 s82.gocheapweb.com 51.195.88.199, 49738, 49741, 49749 OVHFR France 24->50 52 api.ipify.org 104.26.13.205, 443, 49734 CLOUDFLARENETUS United States 24->52 78 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->78 80 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 24->80 82 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 24->82 84 4 other signatures 24->84 32 conhost.exe 28->32         started        signatures13 process14
Detection:
agenttesla
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Link:
https://mwdb.cert.pl/sample/a7c2b459805c50ca9c86290e12bdeafbf35f75727d20a8975002d71f4a951259/
Threat name:
Script-JS.Downloader.Nemucod
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Status:
Malicious
First seen:
2024-06-21 05:31:07 UTC
File Type:
Text
AV detection:
19 of 38 (50.00%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u7bliwmalrimvhegfehbfppk7pzv65lspuqkrf2qallr6suvcjmq._file
Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240621-f7rtgsyhjd/
Behaviour
Suspicious use of WriteProcessMemory
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
AgentTesla
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:AgentTeslaV3
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Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTeslaV5
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Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:BitcoinAddress
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Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:DebuggerCheck__RemoteAPI
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
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Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
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Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

Comments