MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ad202f1b096cd6285e7d1c2891165737589889b74607159df0507a9f6b9eafef. 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: 13


Maldoc score: 5


Intelligence 13 IOCs YARA 5 File information Comments

SHA256 hash: ad202f1b096cd6285e7d1c2891165737589889b74607159df0507a9f6b9eafef
SHA3-384 hash: 95525baf0a0c2ec928bf2a108ef1a33f28fc20d214556e82e292915b2224f765959736b0b0ee1b939ddb88271fe9d1ec
SHA1 hash: e413d710459897b9320a38288a7e88e46b536f0a
MD5 hash: 74564f586088acabc48231123485d5bd
humanhash: carpet-virginia-earth-virginia
File name:SWIFT pagesa .doc
Download: download sample
Signature RemcosRAT
File size:46'080 bytes
First seen:2022-04-13 07:10:06 UTC
Last seen:2022-04-13 08:01:50 UTC
File type:Word file doc
MIME type:application/msword
ssdeep 768:Rv/K2j/GDsTzXH1xVPY4qxw+tESjkWIwF:NDjgMLPVmxrtECkW
TLSH T18F234911B3D9CC46F18292348EC3CB99B32DBD1D5E12C21B3351BB4EBCB56714A22B69
Reporter abuse_ch
Tags:doc RemcosRAT

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: 5
OLE dump

MalwareBazaar was able to identify 11 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
24096 bytesDocumentSummaryInformation
34096 bytesSummaryInformation
47089 bytes1Table
517196 bytesData
6357 bytesMacros/PROJECT
741 bytesMacros/PROJECTwm
81774 bytesMacros/VBA/ThisDocument
92435 bytesMacros/VBA/_VBA_PROJECT
10513 bytesMacros/VBA/dir
114096 bytesWordDocument
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
AutoExecAutoOpenRuns when the Word document is opened
IOCMAM1.msiExecutable file name
SuspiciousCreateObjectMay create an OLE object
SuspiciouswindowsMay enumerate application windows (if combined with Shell.Application object)

Intelligence


File Origin
# of uploads :
2
# of downloads :
340
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SWIFT pagesa .doc
Verdict:
Suspicious activity
Analysis date:
2022-04-13 08:37:34 UTC
Tags:
macros macros-on-open generated-doc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a file in the Windows subdirectories
Creating a file in the %temp% subdirectories
Launching a process
Creating a process with a hidden window
Moving a file to the %temp% subdirectory
Creating a process from a recently created file
Running batch commands
Using the Windows Management Instrumentation requests
Result
Verdict:
Malicious
File Type:
Legacy Word File with Macro
Payload URLs
URL
File name
https://filebin.net/7bhac6pxm9hgd9pv/MAM1.msi
ThisDocument
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
advpack.dll cmd.exe control.exe expand.exe explorer.exe fingerprint macros macros-on-open rundll32.exe setupapi.dll shell32.dll
Label:
Malicious
Suspicious Score:
7.9/10
Score Malicious:
8%
Score Benign:
2%
Result
Verdict:
MALICIOUS
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 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:
Unknown
Detection:
malicious
Classification:
expl
Score:
84 / 100
Signature
Antivirus detection for URL or domain
Document contains OLE streams with names of living off the land binaries
Document contains OLE streams with PE executables
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 608443 Sample: SWIFT pagesa .doc Startdate: 13/04/2022 Architecture: WINDOWS Score: 84 58 Multi AV Scanner detection for domain / URL 2->58 60 Antivirus detection for URL or domain 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 4 other signatures 2->64 9 msiexec.exe 87 31 2->9         started        13 WINWORD.EXE 46 41 2->13         started        15 rundll32.exe 2->15         started        process3 dnsIp4 54 filebin.net 185.47.40.36, 443, 49774 REDPILL-LINPRORedpillLinproNO Norway 9->54 56 situla.bitbit.net 87.238.33.8, 443, 49775 REDPILL-LINPRORedpillLinproNO Norway 9->56 46 C:\Windows\Installer\MSIC6CB.tmp, PE32 9->46 dropped 48 C:\Windows\Installer\MSIBD72.tmp, PE32 9->48 dropped 50 C:\Windows\Installer\MSI503E.tmp, PE32 9->50 dropped 17 msiexec.exe 5 9->17         started        52 C:\Users\user\...\~DFA57C5F537028CAA2.TMP, Composite 13->52 dropped file5 process6 process7 19 MAM1.exe 1 3 17->19         started        21 expand.exe 8 17->21         started        24 icacls.exe 1 17->24         started        26 2 other processes 17->26 file8 28 cmd.exe 1 19->28         started        42 C:\Users\user\AppData\...\MAM1.exe (copy), PE32+ 21->42 dropped 44 C:\...\185a20c4fc99c24caf0733424f05dc08.tmp, PE32+ 21->44 dropped 30 conhost.exe 21->30         started        32 conhost.exe 24->32         started        34 conhost.exe 26->34         started        36 conhost.exe 26->36         started        process9 process10 38 powershell.exe 20 28->38         started        40 conhost.exe 28->40         started       
Threat name:
Win32.Downloader.Mutisedow
Status:
Malicious
First seen:
2022-04-13 07:11:05 UTC
File Type:
Document
Extracted files:
17
AV detection:
11 of 41 (26.83%)
Threat level:
  3/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:mami discovery macro macro_on_action persistence rat
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Adds Run key to start application
Enumerates connected drives
Loads dropped DLL
Modifies file permissions
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
achimumuazi.hopto.org:2311
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:Office_AutoOpen_Macro
Author:Florian Roth
Description:Detects an Microsoft Office file that contains the AutoOpen Macro function
Rule name:SUSP_Doc_WindowsInstaller_Call_Feb22_1
Author:Nils Kuhnert
Description:Triggers on docfiles executing windows installer. Used for deploying ThinBasic scripts.
Reference:https://inquest.net/blog/2022/02/24/dangerously-thinbasic
Rule name:susp_lure_xls_WindowsInstaller_Feb2021_1
Author:Nils Kuhnert
Description:Triggers on docfiles executing windows installer. Used for deploying ThinBasic scripts.
Reference:https://twitter.com/threatinsight/status/1497355737844133895

File information


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

Comments