MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c. 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


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c
SHA3-384 hash: 26e8aa1eb60ff5d746d95bec3e046ffefd6ff9b7dd86e1164c0af89043b89543b8441a258d76973342a43e819a84a5eb
SHA1 hash: a9d6d25da5138418dbc6f8a25fe9dd9f3c7bd169
MD5 hash: 0d9a3c343c2348d4f629eacc735cc735
humanhash: queen-pennsylvania-cold-triple
File name:Walaa-Qasem-resume 2.doc
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'596'566 bytes
First seen:2021-02-03 07:17:59 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:v9GZ4BSofTNaJdtGUpLAShyNemOKnjou0jV0k1W8iCfSGka3ea8TwcQ75oBqbwfr:l
TLSH B0C5BFF876047DE6267F576BDA96ACDC03B626239ACBA4CD806477C305A3375FE02805
Reporter abuse_ch
Tags:doc RemcosRAT


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: cyber.net.pk
Sending IP: 84.38.135.130
From: Walaa Qasem <walaaqasem10@gmail.com>
Subject: Human Resources Officer vacancy
Attachment: Walaa-Qasem-resume 2.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Walaa-Qasem-resume 2.doc
Verdict:
Malicious activity
Analysis date:
2021-02-03 07:44:53 UTC
Tags:
exploit CVE-2017-11882 trojan rat remcos
Link:
https://app.any.run/tasks/dee692ba-fa80-4f12-bd24-80ad6e29e29a

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:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._EQUATION.200422.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file in the %AppData% directory
Running batch commands
Creating a process with a hidden window
Adding an access-denied ACE
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Deleting a recently created file
Connection attempt
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Creating a process from a recently created file
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/597475
Signature
Antivirus detection for URL or domain
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
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
Detected Remcos RAT
Hides threads from debuggers
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 347775 Sample: Walaa-Qasem-resume 2.doc Startdate: 03/02/2021 Architecture: WINDOWS Score: 100 74 Multi AV Scanner detection for domain / URL 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Antivirus detection for URL or domain 2->78 80 8 other signatures 2->80 12 EQNEDT32.EXE 1 2->12         started        17 win.exe 1 2->17         started        19 win.exe 2->19         started        21 2 other processes 2->21 process3 dnsIp4 72 sfghfsfjskdjkdfbvndcnfjskaklwrrfw.ydns.eu 46.183.220.125, 49165, 80 DATACLUBLV Latvia 12->72 66 C:\Users\user\AppData\Roaming\SJU.exe, PE32 12->66 dropped 98 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 12->98 23 SJU.exe 12 1 12->23         started        100 Hides threads from debuggers 17->100 102 Injects a PE file into a foreign processes 17->102 27 cmd.exe 17->27         started        29 win.exe 17->29         started        31 win.exe 17->31         started        33 cmd.exe 19->33         started        35 win.exe 19->35         started        37 win.exe 19->37         started        file5 signatures6 process7 dnsIp8 68 193.239.147.103, 49166, 49167, 49168 DEDIPATH-LLCUS Brunei Darussalam 23->68 90 Multi AV Scanner detection for dropped file 23->90 92 Contains functionality to steal Chrome passwords or cookies 23->92 94 Contains functionality to capture and log keystrokes 23->94 96 6 other signatures 23->96 39 SJU.exe 1 3 23->39         started        42 cmd.exe 23->42         started        44 timeout.exe 27->44         started        46 timeout.exe 33->46         started        signatures9 process10 file11 64 C:\Users\user\AppData\Roaming\win.exe, PE32 39->64 dropped 48 wscript.exe 1 39->48         started        50 timeout.exe 42->50         started        process12 process13 52 cmd.exe 48->52         started        process14 54 win.exe 12 1 52->54         started        signatures15 82 Multi AV Scanner detection for dropped file 54->82 84 Contains functionality to steal Chrome passwords or cookies 54->84 86 Contains functionality to capture and log keystrokes 54->86 88 3 other signatures 54->88 57 win.exe 54->57         started        60 cmd.exe 54->60         started        process16 dnsIp17 70 gdyhjjdhbvxgsfe.gotdns.ch 104.250.161.7, 2177 TOTAL-SERVER-SOLUTIONSUS United States 57->70 62 timeout.exe 60->62         started        process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-03 06:08:01 UTC
AV detection:
18 of 45 (40.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rlkgoos2f3rcgtniyj3bmve5eby5iptwtbinvvvqt3uv5wjz2rga._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210203-hafhwknapx/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
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
Program crash
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
gdyhjjdhbvxgsfe.gotdns.ch:2177
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/8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c

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:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.

File information

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

Malspam

RemcosRAT

Word file doc 8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c

(this sample)

  
Delivery method
Distributed via e-mail attachment

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