MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 6f033029c7437455250f86d2cc3958f57e58269c0a6b72d73b17eff908e76556. 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
RedLineStealer
Vendor detections: 11
Maldoc score: 9
| SHA256 hash: | 6f033029c7437455250f86d2cc3958f57e58269c0a6b72d73b17eff908e76556 |
|---|---|
| SHA3-384 hash: | 1e4cf888c6a45287c0a574b03452acd358dff398b750199d4191fc30a8907f67431e4d4dd616e023522ad2dfb77c768f |
| SHA1 hash: | 3fad8ddd53a9353bbc6ea3f0e648e3d2d4583c6d |
| MD5 hash: | 3894f21e1454137a3f29eba54185b67a |
| humanhash: | spaghetti-chicken-hamper-undress |
| File name: | Scanned invoice 9746-67347-1254-9884.xlsm |
| Download: | download sample |
| Signature | RedLineStealer |
| File size: | 43'415 bytes |
| First seen: | 2022-02-27 05:51:00 UTC |
| Last seen: | Never |
| File type: |  xlsm |
| MIME type: | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| ssdeep | 768:NvJbpvzssnr4BIJYfTH+niSpTvDHzmv+nW8FFiKk/fYqtwSWqRE+nItHQaJ:NvnvzTr4G1B1Tzmv+DFFi3/QqGxqZIZr |
| TLSH | T1BC13D02CCECA4A58DA4FD03475DEBB93A1459A91B2709F4B0E2CD24E1585CC1133BDEB |
| Reporter |  abuse_ch |
| Tags: | RedLineStealer xlsm |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 194.31.98.127:40250 | https://threatfox.abuse.ch/ioc/391109/ |
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 9 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| A1 | 586 bytes | PROJECT |
| A2 | 119 bytes | PROJECTwm |
| A3 | 173 bytes | VBA/Learn more |
| A4 | 168 bytes | VBA/Start |
| A5 | 354 bytes | VBA/ThisWorkbook |
| A6 | 171 bytes | VBA/Workbook |
| A7 | 7 bytes | VBA/_VBA_PROJECT |
| A8 | 270 bytes | 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:
| Type | Keyword | Description |
|---|---|---|
| AutoExec | Workbook_Open | Runs when the Excel Workbook is opened |
| IOC | certutil.exe | Executable file name |
| IOC | Olusvpn.exe | Executable file name |
| IOC | Xkihtxcwlxjfjzinrznx | Executable file name |
| Suspicious | Shell | May run an executable file or a system command |
| Suspicious | vbHide | May run an executable file or a system command |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
| Suspicious | Base64 Strings | Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
503
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Searching for the window
Launching a process
DNS request
Creating a file
Creating a process from a recently created file
Unauthorized injection to a recently created process
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Payload URLs
URL
File name
https://random1.x24hr.com/k/Olusvpn.exe
ThisWorkbook
Document image
Image:
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
certutil certutil.exe cmd macros macros-on-open
Label:
Malicious
Suspicious Score:
9.6/10
Score Malicious:
97%
Score Benign:
3%
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.
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.
External Relationship Element
Document contains an externally hosted relationship, which fetches further content.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Document contains an embedded VBA macro which may execute processes
Document exploit detected (process start blacklist hit)
Drops PE files to the document folder of the user
Machine Learning detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious Certutil Command
Sigma detected: Windows Shell File Write to Suspicious Folder
System process connects to network (likely due to code injection or exploit)
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Trojan.Heuristic
Status:
Malicious
First seen:
2022-02-27 05:51:08 UTC
File Type:
Document
Extracted files:
50
AV detection:
6 of 42 (14.29%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
macro
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Downloads MZ/PE file
Executes dropped EXE
Process spawned unexpected child process
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
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
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