MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b. 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: 11


Maldoc score: 11


Intelligence 11 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b
SHA3-384 hash: ffe27de30dece11660556f9cf86d0398b57e5bc8a95fabb8ac617de0f170e3539c677ff90f46808255ce6dc3115b17eb
SHA1 hash: d946a7e52728e50d6013a65bc0eb008b42b83787
MD5 hash: cf4c3f1e0953167d484fb25ac961db42
humanhash: cold-robin-seventeen-pennsylvania
File name:delivery noticefNQSE5.xlsm
Download: download sample
Signature SnakeKeylogger
Create hunting rule
File size:399'153 bytes
First seen:2021-10-21 05:54:34 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 12288:g3WqMIJ2QZO06ADi7AjQkNNNKN8mWhELCpd4cU:g3qIJrZO06AO76Q4mNVzCpm3
TLSH T150841298CF6A4482C38BA670964ED892C4297801A40DFF672974531D8987CDF536FFEE
Reporter abuse_ch
Tags:SnakeKeylogger xlsm

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: 11
OLE dump

MalwareBazaar was able to identify 19 sections in this file using oledump:

Section IDSection sizeSection name
A11104 bytesPROJECT
A2335 bytesPROJECTwm
A3173 bytesVBA/Learn more
A4172 bytesVBA/Sheet10
A5178 bytesVBA/Sheet11
A6169 bytesVBA/Sheet2
A7170 bytesVBA/Sheet3
A8171 bytesVBA/Sheet4
A9173 bytesVBA/Sheet5
A10180 bytesVBA/Sheet6
A11171 bytesVBA/Sheet7
A12177 bytesVBA/Sheet8
A13173 bytesVBA/Sheet9
A14168 bytesVBA/Start
A151059 bytesVBA/ThisWorkbook
A16171 bytesVBA/Workbook
A177 bytesVBA/_VBA_PROJECT
A18452 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_ActivateRuns when the Excel Workbook is opened
IOCQtkkhrqfym.batExecutable file name
SuspiciousOpenMay open a file
SuspiciousOutputMay write to a file (if combined with Open)
SuspiciousShellMay 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 :
147
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Snake
Create hunting rule
Link:
https://www.capesandbox.com/analysis/198950/
Detection(s):
SecuriteInfo.com.VBS.Obfus-177.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.POWERSHELL.211012.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CancionDelMariachi.20211020.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open packed powershell
Link:
https://www.filescan.io/uploads/617100badb358dd15ecc027a/reports/f4b06aea-6f88-4027-a165-be598404a2dc/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b
Result
Threat name:
Snake Keylogger
Create hunting rule
Detection:
malicious
Classification:
bank.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/874326
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for dropped file
Document contains an embedded VBA macro which may execute processes
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious encrypted Powershell command line found
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious Encoded PowerShell Command Line
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected Snake Keylogger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 506754 Sample: delivery noticefNQSE5.xlsm Startdate: 21/10/2021 Architecture: WINDOWS Score: 100 98 Multi AV Scanner detection for domain / URL 2->98 100 Found malware configuration 2->100 102 Malicious sample detected (through community Yara rule) 2->102 104 12 other signatures 2->104 9 EXCEL.EXE 77 48 2->9         started        13 note.exe 1 2->13         started        15 note.exe 2->15         started        process3 file4 44 C:\Users\user\Documents\Qtkkhrqfym.bat, ASCII 9->44 dropped 46 C:\Users\...\~$delivery noticefNQSE5.xlsm, data 9->46 dropped 48 C:\...\delivery noticefNQSE5.xlsm (copy), Microsoft 9->48 dropped 114 Document exploit detected (creates forbidden files) 9->114 17 cmd.exe 9->17         started        50 C:\Users\user\AppData\Local\Temp\note.exe, PE32 13->50 dropped 116 Writes to foreign memory regions 13->116 118 Allocates memory in foreign processes 13->118 120 Injects a PE file into a foreign processes 13->120 20 note.exe 13->20         started        22 note.exe 12 13->22         started        25 note.exe 15->25         started        signatures5 process6 dnsIp7 74 Malicious encrypted Powershell command line found 17->74 76 Encrypted powershell cmdline option found 17->76 27 powershell.exe 12 7 17->27         started        78 Antivirus detection for dropped file 20->78 80 May check the online IP address of the machine 20->80 82 Machine Learning detection for dropped file 20->82 60 checkip.dyndns.org 22->60 62 216.146.43.70, 49168, 49169, 80 DYNDNSUS United States 22->62 68 2 other IPs or domains 22->68 64 checkip.dyndns.org 25->64 66 172.67.188.154, 443, 49172 CLOUDFLARENETUS United States 25->66 70 2 other IPs or domains 25->70 84 Tries to steal Mail credentials (via file access) 25->84 86 Tries to harvest and steal ftp login credentials 25->86 88 Tries to harvest and steal browser information (history, passwords, etc) 25->88 signatures8 process9 dnsIp10 72 3.64.251.139, 49165, 80 AMAZON-02US United States 27->72 52 C:\Users\user\...\Qxwhhwxztatczrimdt.exe, PE32 27->52 dropped 122 Powershell drops PE file 27->122 32 Qxwhhwxztatczrimdt.exe 1 3 27->32         started        file11 signatures12 process13 file14 40 C:\Users\user\AppData\Roaming\...\note.exe, PE32 32->40 dropped 42 C:\Users\user\...\Qxwhhwxztatczrimdt.exe, PE32 32->42 dropped 90 Antivirus detection for dropped file 32->90 92 Machine Learning detection for dropped file 32->92 94 Writes to foreign memory regions 32->94 96 2 other signatures 32->96 36 Qxwhhwxztatczrimdt.exe 12 32->36         started        signatures15 process16 dnsIp17 54 checkip.dyndns.org 36->54 56 checkip.dyndns.com 193.122.6.168, 49166, 49171, 80 ORACLE-BMC-31898US United States 36->56 58 freegeoip.app 104.21.19.200, 443, 49167, 49170 CLOUDFLARENETUS United States 36->58 106 Antivirus detection for dropped file 36->106 108 May check the online IP address of the machine 36->108 110 Tries to steal Mail credentials (via file access) 36->110 112 Machine Learning detection for dropped file 36->112 signatures18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b/
Threat name:
Script.Trojan.Donoff
Create hunting rule
Status:
Malicious
First seen:
2021-10-21 02:35:59 UTC
AV detection:
11 of 43 (25.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhohtmqzicvu3fh3a7g7ym36v44ht7ckplkow4lvd46a5ksbaynq._file
Result
Malware family:
snakekeylogger
Create hunting rule
Score:
  10/10
Tags:
family:snakekeylogger collection keylogger macro persistence spyware stealer
Link:
https://tria.ge/reports/211021-gmgcpaagbp/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
NTFS ADS
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Deletes itself
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Process spawned unexpected child process
Snake Keylogger
Malware Config
Dropper Extraction:
http://3.64.251.139/vr/r/QA4ty2uUkTCD2tfNQSE5.exe
Malware family:
Phoenix
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/81dc79b21940/report/overview.html
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/81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b

File information

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

Malspam

SnakeKeylogger

Excel file xlsm 81dc79b21940ab4d94fb07cdfc337eaf3879fc4a7ad4eb71751f3c0eaa41061b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/198950/

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