MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e. 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


Threat unknown


Vendor detections: 8


Maldoc score: 23


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e
SHA3-384 hash: 4b068c820ab0f665528d6a3b18a48eb1d01b96bc9824fb95ea082586ee659c84745750c1bc8c919998d2e144526f465f
SHA1 hash: ad3328cafb1fd86491f76705f2b5c9cb80394bc9
MD5 hash: 6a7bd45c84373b00086d7c0ecab1ffcd
humanhash: two-seventeen-twenty-red
File name:Shipment Information.xls
Download: download sample
File size:419'840 bytes
First seen:2021-05-10 06:30:32 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:cxEtjPOtioVjDGUU1qfDlavx+W2QnA+xVwdzozR2gMqqGr3xkhwrKUl/o3eoPyHS:Ko9xMEUwOXeosvzEdR1ODPy
TLSH 009403952742DE4FD64B06314CABBBF63365EC048F5FA2C7A150F21B1D3EA92EB61406
Reporter abuse_ch
Tags:xls

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: 23
Application name is Microsoft Excel
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 17 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3224 bytesSummaryInformation
4300696 bytesWorkbook
5586 bytes_VBA_PROJECT_CUR/PROJECT
6146 bytes_VBA_PROJECT_CUR/PROJECTwm
7824 bytes_VBA_PROJECT_CUR/VBA/Module1
8985 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9985 bytes_VBA_PROJECT_CUR/VBA/Sheet2
10985 bytes_VBA_PROJECT_CUR/VBA/Sheet3
1188135 bytes_VBA_PROJECT_CUR/VBA/ThisWordfgfnfkbook
125303 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
134604 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14327 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
153532 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
162172 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
17636 bytes_VBA_PROJECT_CUR/VBA/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
IOCwinethc.dllExecutable file name
IOCshell32.dllExecutable file name code and P-code are different, this may have been used to hide malicious code
SuspiciousEnvironMay read system environment variables
SuspiciousopenMay open a file
SuspiciousvbNormalFocusMay run an executable file or a system command
SuspiciousShellExecuteAMay run an executable file or a system command
Suspiciousshell32May run an executable file or a system command
SuspiciousLibMay run code from a DLL
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousStrReverseMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
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 :
105
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/153717/
Detection(s):
TwinWave.EvilDoc.URLDownloaderSuperStar.20200510.UNOFFICIAL
Create hunting rule

TwinWave.EvilDocs.FuncStacksJustWannaHaveFUN.20210129.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Doc.ShellExe.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e/results/dashboard
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/721163
Signature
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with hexadecimal encoded strings
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Drops PE files to the user root directory
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office process drops PE file
Sigma detected: MS Office Product Spawning Exe in User Dir
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e/
Threat name:
Script-Macro.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-05-07 04:37:01 UTC
AV detection:
14 of 46 (30.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vigch72xzcijccq3vakloj5lkujlkx7xpbozoxwwgs6gqjgukaxa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro macro_on_action
Link:
https://tria.ge/reports/210510-55b51tl716/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Office loads VBA resources, possible macro or embedded object present
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/aa0c23ff57c890910a1ba814b727ab5512b55ff7785d975ed634bc6824d4502e

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: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.

Cape
Cape
https://www.capesandbox.com/analysis/153717/

Comments