MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4a2ef1275bc990de685f884d4f707a2d6ce6a759aee9939dc0ec89faa95f1dff. 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: 11
Maldoc score: 25
| SHA256 hash: | 4a2ef1275bc990de685f884d4f707a2d6ce6a759aee9939dc0ec89faa95f1dff |
|---|---|
| SHA3-384 hash: | f4e81cd53409d033d63bf795fe3c0d72d4fede547ab124df652d9bbe20f2fa0dea2b8ebb9a544ca50b236643925c368a |
| SHA1 hash: | 0ee218b82bced448ebdb0b0f44a17b85bad0dc04 |
| MD5 hash: | 1c3e72af7df13ac844fb88b7ec12a594 |
| humanhash: | jupiter-nevada-eleven-football |
| File name: | Comprobante de Pago.doc |
| Download: | download sample |
| File size: | 183'808 bytes |
| First seen: | 2022-03-22 17:27:08 UTC |
| Last seen: | Never |
| File type: |  doc |
| MIME type: | application/msword |
| ssdeep | 1536:Nzr6SnF20a1RRIAIjaFXw9zJx93dIT0VYpYA7K52z6eh3lBuKjg3d/Qdf3UTvsgQ:dTIsApFXmP93+T0VY+b66+6KS350npI |
| TLSH | T13E04F19676A9D432E253553249D3EBF737A4FCC90D89C28B33493F2EAE761649603381 |
| Reporter |  abuse_ch |
| Tags: | doc |
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: 25 |
OLE dump
MalwareBazaar was able to identify 12 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 114 bytes | CompObj |
| 2 | 4096 bytes | DocumentSummaryInformation |
| 3 | 4096 bytes | SummaryInformation |
| 4 | 7191 bytes | 1Table |
| 5 | 135708 bytes | Data |
| 6 | 494 bytes | Macros/PROJECT |
| 7 | 71 bytes | Macros/PROJECTwm |
| 8 | 934 bytes | Macros/VBA/NewMacros |
| 9 | 11533 bytes | Macros/VBA/ThisDocument |
| 10 | 8412 bytes | Macros/VBA/_VBA_PROJECT |
| 11 | 578 bytes | Macros/VBA/dir |
| 12 | 4096 bytes | WordDocument |
OLE vba
MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:
| Type | Keyword | Description |
|---|---|---|
| AutoExec | Document_Open | Runs when the Word or Publisher document is opened |
| Suspicious | Open | May open a file |
| Suspicious | Write | May write to a file (if combined with Open) |
| Suspicious | adodb.stream | May create a text file |
| Suspicious | SaveToFile | May create a text file |
| Suspicious | Shell | May run an executable file or a system command |
| Suspicious | WScript.Shell | May run an executable file or a system command |
| Suspicious | CreateObject | May create an OLE object |
| Suspicious | Shell.Application | May run an application (if combined with CreateObject) |
| Suspicious | microsoft.xmlhttp | May download files from the Internet |
| Suspicious | Chr | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Xor | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) code and P-code are different, this may have been used to hide malicious code |
Intelligence
File Origin
# of uploads :
1
# of downloads :
193
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Searching for the window
Running batch commands
Creating a process with a hidden window
Changing the Zone.Identifier stream
Sending an HTTP GET request
Unauthorized injection to a recently created process
Sending a custom TCP request by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Word File with Macro
Document image
Image:
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
evasive evasive macros macros-on-open packed vbastomped
Label:
Malicious
Suspicious Score:
8.4/10
Score Malicious:
85%
Score Benign:
15%
Result
Verdict:
MALICIOUS
Link:
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Macro with File System Write
Detected macro logic that can write data to the file system.
Shell.Application Object
Detected the instantiation of Shell Application object within the macro.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
76 / 100
Signature
Antivirus / Scanner detection for submitted sample
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Threat name:
Document-Word.Downloader.Donoff
Status:
Malicious
First seen:
2022-03-22 17:28:11 UTC
File Type:
Document
Extracted files:
19
AV detection:
18 of 41 (43.90%)
Threat level:
3/5
Result
Malware family:
n/a
Score:
8/10
Tags:
macro macro_on_action
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
Malware family:
NanoCore
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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