MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 204806f363e25b8caab19fade1152cbdef6d19a2ee0f122ce2a2aa3949154f1d. 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
RemcosRAT
Vendor detections: 11
Maldoc score: 8
| SHA256 hash: | 204806f363e25b8caab19fade1152cbdef6d19a2ee0f122ce2a2aa3949154f1d |
|---|---|
| SHA3-384 hash: | db9f2b10f513c812568e62c46db8dd2e343ff910470f6202a112c6274ee56382e0282cb1a0eebe746ed33ff80598db5c |
| SHA1 hash: | 79197c202c6b9b5444e54b676c71daa170f66b3d |
| MD5 hash: | 71de1e4e9693bd5e37eca72de6f42cde |
| humanhash: | snake-four-undress-texas |
| File name: | Electronic Payment Advice.xls |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 236'544 bytes |
| First seen: | 2021-09-03 19:19:21 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 6144:tk3hOdsylKlgxopeiBNhZF+E+W2kdACkgAPvAqW5261qS1MmM1c92+CgmivgJh5Q:4eZKcUgcigmivrqFa |
| TLSH | T1DC34D032B780D855DA9F83B88AE6D69A2712FD929AC74647339DF70E1F30FC05D02646 |
| Reporter |  abuse_ch |
| Tags: | ModiLoader RAT RemcosRAT 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: 8 |
| Application name is Microsoft Excel |
| Office document is in OLE format |
| Office document contains VBA Macros |
OLE dump
MalwareBazaar was able to identify 15 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 108 bytes | CompObj |
| 2 | 244 bytes | DocumentSummaryInformation |
| 3 | 220 bytes | SummaryInformation |
| 4 | 218762 bytes | Workbook |
| 5 | 530 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 80 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 1554 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 8 | 1261 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 9 | 3412 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 10 | 831 bytes | _VBA_PROJECT_CUR/VBA/dir |
| 11 | 1784 bytes | _VBA_PROJECT_CUR/VBA/gqmCL |
| 12 | 97 bytes | _VBA_PROJECT_CUR/gqmCL/CompObj |
| 13 | 262 bytes | _VBA_PROJECT_CUR/gqmCL/VBFrame |
| 14 | 38 bytes | _VBA_PROJECT_CUR/gqmCL/f |
| 15 | 0 bytes | _VBA_PROJECT_CUR/gqmCL/o |
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_Activate | Runs when the Excel Workbook is opened |
| AutoExec | Worksheet_Change | Runs when the file is opened and ActiveX objects trigger events |
| Suspicious | ShellExecute | May run an executable file or a system command |
| Suspicious | GetObject | May get an OLE object with a running instance |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Electronic Payment Advice.xls
Verdict:
Malicious activity
Analysis date:
2021-09-03 19:22:25 UTC
Tags:
macros macros-on-open loader rat remcos
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
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Connection attempt
Sending an HTTP GET request
Creating a file in the %temp% directory
Creating a process from a recently created file
Sending a UDP request
DNS request
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Running batch commands
Launching cmd.exe command interpreter
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Launching a process by exploiting the app vulnerability
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Document image
Image:
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 Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
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:
Remcos
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates a thread in another existing process (thread injection)
Delayed program exit found
Detected Remcos RAT
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
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
Very long command line found
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Threat name:
Document-Office.Trojan.Valyria
Status:
Malicious
First seen:
2021-09-03 19:20:08 UTC
AV detection:
9 of 43 (20.93%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:augusta macro macro_on_action persistence rat
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Modifies registry key
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Office loads VBA resources, possible macro or embedded object present
Adds Run key to start application
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Process spawned unexpected child process
Remcos
Malware Config
C2 Extraction:
twistednerd.dvrlists.com:8618
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.
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