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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83. 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


ZLoader


Vendor detections: 7


Maldoc score: 8


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

SHA256 hash: a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83
SHA3-384 hash: 9e37d3fc3a70e182b6e5321429987c2ad6aa1e1a8da8e2be27f75a85ea7b4839ba9a8fab125f920c0aaa0b12874426d5
SHA1 hash: 3df901e85298d8dcb3fe62f3617d522f4483df97
MD5 hash: 8f3e4a4679754768a8a17390e8f7d88b
humanhash: emma-twenty-speaker-grey
File name:907r.xlsm
Download: download sample
Signature ZLoader
Create hunting rule
File size:20'370 bytes
First seen:2021-03-23 06:20:47 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 384:ZawoNTpNxHfwW0oCOqXLiRCRrRQHrTejUlM9zTU9G/g:fobHVaX9qWxYh
TLSH 3E92CF2EF544F8ADC077893BA00C12E2F30E205066E753E62953B6DB57966C3138EBD8
Reporter JoulK
Tags:xlsm ZLoader

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: 8
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
SuspiciousFORMULA.FILLMay modify Excel 4 Macro formulas at runtime
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)
SuspiciousXLM macrosheetXLM macrosheet found. It could contain malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
175
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
907r.xlsm
Verdict:
No threats detected
Analysis date:
2021-03-23 06:24:16 UTC
Tags:
macros40
Link:
https://app.any.run/tasks/b8783fed-ba84-4701-8c99-9373f427cacf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/126407/
Detection(s):
SecuriteInfo.com.Office.Macro-1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Zloader.KeepTheirHeadsRingin.20210311.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Zloader.KeepTheirHeadsRingin.M2.20210311.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Excel4Macro
Link:
https://app.docguard.net/a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83/results/dashboard
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
evad
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/649403
Signature
Found abnormal large hidden Excel 4.0 Macro sheet
Hides that the sample has been downloaded from the Internet (zone.identifier)
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83/
Threat name:
Document-Excel.Downloader.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-03-23 06:21:04 UTC
AV detection:
5 of 48 (10.42%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=usj6thllf2n2hwqcgp2ecpk33mm63rmtyit6a5rr4lsdv4wa5obq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro xlm
Link:
https://tria.ge/reports/210323-t141f3tpbs/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
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/a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Microsoft_XLSX_with_Macrosheet
Create hunting rule
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Web download

ZLoader

Excel file xlsm a493e99d6b2e9ba3da0233f4413d5bdb19edc593c227e07631e2e43af2c0eb83

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/126407/

Comments