MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cff8f6a7086e172e1fc7d5c1c23cebd421ab8f9d3b8173dea497bf43ca15a903. 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



SnakeKeylogger


Vendor detections: 12


Maldoc score: 9


Intelligence 12 IOCs YARA 2 File information Comments

SHA256 hash: cff8f6a7086e172e1fc7d5c1c23cebd421ab8f9d3b8173dea497bf43ca15a903
SHA3-384 hash: 0cd4d51c70fea0dfd2e8bb8faceb0c52f3065b6447a85aef0f3727af71671b9dbc31d22738c3c6965ce1a49166d4ce66
SHA1 hash: 7f6bcbd2682983ce5442730bd12f7ef43bad691a
MD5 hash: aaca994cdde96bebbe0219247d5b4eb3
humanhash: echo-august-mobile-robert
File name:5067000010582.xlsm
Download: download sample
Signature SnakeKeylogger
File size:104'621 bytes
First seen:2022-01-31 14:36:56 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 3072:qlOKZu86S3Roy9uFwZlsaFPOHYonHBxqPZtmRL:qAYuS/IwZltFPgYonHBxqPZUN
TLSH T1BEA30299366A677FE2CF8D38841A370FEB91454598067CE61DA9714F785C8E30302EDE
Reporter abuse_ch
Tags:SnakeKeylogger xlsm


Avatar
abuse_ch
SnakeKeylogger payload URL:
http://18.156.129.63/entity/5067000010582.bat

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 9
OLE dump

MalwareBazaar was able to identify 8 sections in this file using oledump:

Section IDSection sizeSection name
A1527 bytesPROJECT
A289 bytesPROJECTwm
A3169 bytesVBA/Sheet1
A4362 bytesVBA/ThisWorkbook
A5171 bytesVBA/Workbook
A67 bytesVBA/_VBA_PROJECT
A7228 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
IOC18.156.129.63IPv4 address
IOCcertutil.exeExecutable file name
IOC5067000010582.batExecutable file name
IOCDtvwyixtcgwhkhddvpivExecutable file name
SuspiciousShellMay run an executable file or a system command
SuspiciousvbHideMay run an executable file or a system command
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
164
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Running batch commands
Running batch commands by exploiting the app vulnerability
Unauthorized injection to a system process
Enabling autorun by creating a file
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Payload URLs
URL
File name
http://18.156.129.63/entity/5067000010582.bat
ThisWorkbook
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm certutil certutil.exe cmd cmd.exe control.exe macros macros-on-open replace.exe
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
1%
Score Benign:
0%
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
IPv4 Dotted Quad URL
A URL was detected referencing a direct IP address, as opposed to a domain name.
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
InQuest Machine Learning
An InQuest machine-learning model classified this macro as potentially malicious.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
Snake Keylogger
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Behaviour
Behavior Graph:
n/a
Threat name:
Script-Macro.Trojan.Heuristic
Status:
Malicious
First seen:
2022-01-31 14:37:11 UTC
File Type:
Document
Extracted files:
28
AV detection:
5 of 43 (11.63%)
Threat level:
  2/5
Result
Malware family:
snakekeylogger
Score:
  10/10
Tags:
family:snakekeylogger collection keylogger macro persistence stealer
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Loads dropped DLL
Uses the VBS compiler for execution
Downloads MZ/PE file
Executes dropped EXE
Sets service image path in registry
Process spawned unexpected child process
Snake Keylogger
Snake Keylogger Payload
Malware family:
Phoenix
Verdict:
Malicious
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:BitcoinAddress
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_shellcode_hash
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value

File information


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

Comments