MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394. 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

Intelligence 13 IOCs YARA 3 File information Comments

SHA256 hash:	37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394
SHA3-384 hash:	bb06efc1ecf1b1d78c334b20fb8b205d75d915a6bf967ba55a1b1b60d5a25be865ff99bb0f55cf8c514afc6dae417734
SHA1 hash:	378439d0e767cf0b917fc86c95330010b3dee038
MD5 hash:	09ed61ac54ec9307db27fe3872bdb9b5
humanhash:	golf-kilo-magazine-william
File name:	INQ # 8721.doc
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	70'251 bytes
First seen:	2024-01-30 11:54:09 UTC
Last seen:	2024-01-30 13:51:31 UTC
File type:	doc
MIME type:	text/rtf
ssdeep	768:hwAbZSibMX9gRWjtwAbZSibMX9gRWjtwAbZSibMX9gRWjlTTukWvtZLQu5lI2KsK:hwAlRkwAlRkwAlRYe7vvLBdK
TLSH	T19E634D2DD34B02598F620377AB571E5142BDBA6EF38552B1302C537933EAC3DA1262BD
Reporter	e24111111111111
Tags:	CVE-2017-11882 doc RemcosRAT

e24111111154168

RFQ OUR INQ # 8721
Petros Demetriou [info@medicalpq.gr]
Στάλθηκε: Δευτέρα, 29 Ιανουαρίου 2024 08:56
Συνημμένα:
INQ # 8721.doc‎ (69 KB‎)
Γειά σου,

Καλημέρα,

Βρείτε το συνημμένο PO για το OUR INQ # 8721. Στείλτε μας Proforma
Invoice για περαιτέρω επεξεργασία με τα σωστά τραπεζικά στοιχεία.
Παρακαλούμε να κανονίσετε την παραγγελία και μόλις είστε έτοιμοι,
ενημερώστε μας πριν από μια μέρα για ετοιμότητα.

Χαιρετισμοί,

Πέτρος Δημητρίου
Assistant Manager - Αγορά
HR@medicalpq.gr
210.3506000

ΙΑΤΡΙΚΗ ΦΑΡΜΑΚΕΥΤΙΚΗ Α.Ε.

Ελαιών 54, 14564 Κηφισιά, Αθήνα | Τηλ.: 210.3506000, Fax: 210.8079888
Εταιρεία: info@medicalpq.gr | Ιατρικό Τμήμα: medical@medicalpq.gr
Τμήμα Εξαγωγών: exports@medicalpq.gr | Διεύθυνση Προσωπικού:
HR@medicalpq.gr

Intelligence

File Origin

# of uploads :

# of downloads :

456

Origin country :

Vendor Threat Intelligence

Verdict:

Legit

File type:

application/msword

Has a screenshot:

False

Contains macros:

False

Detection(s):

Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Result

Verdict:

Malicious

File Type:

Fake RTF File

Link:

https://app.docguard.net/37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

embedequation exploit lolbin packed remote shellcode

Link:

https://www.filescan.io/uploads/65b8e39af9733b1319adfbe3/reports/95adc9d4-f6ee-4829-9f58-66be0c6de997/overview

Verdict:

Malicious

Labled as:

CVE-2017-11882

Link:

https://www.hybrid-analysis.com/sample/37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394

Label:

Malicious

Suspicious Score:

10/10

Score Malicious:

Score Benign:

Link:

https://www.malware.ai/gui/files/?id=6efb72fe-175f-4dc4-b167-768330c4ffd2

Result

Verdict:

MALICIOUS

Result

Threat name:

Remcos

Detection:

malicious

Classification:

phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1383266

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

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

Delayed program exit found

Document exploit detected (process start blacklist hit)

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

Installs new ROOT certificates

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Multi AV Scanner detection for domain / URL

Multi AV Scanner 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)

Office equation editor drops PE file

Office equation editor establishes network connection

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Searches for Windows Mail specific files

Sigma detected: Equation Editor Network Connection

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Remcos

Sigma detected: Suspicious Binary In User Directory Spawned From Office Application

Sigma detected: Suspicious Microsoft Office Child Process

Sigma detected: Suspicious Process Patterns NTDS.DIT Exfil

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Instant Messenger accounts or passwords

Tries to steal Mail credentials (via file / registry access)

Tries to steal Mail credentials (via file registry)

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

Score:

44%

Verdict:

Susipicious

File Type:

ASCII

Link:

https://malprob.io/report/37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394/

Threat name:

Document-RTF.Exploit.CVE-2017-11882

Status:

Malicious

First seen:

2024-01-29 03:04:14 UTC

File Type:

Document

Extracted files:

AV detection:

15 of 24 (62.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=g7eplym7cjzub76vqe5la3j6apjly45oqyx7bfj7gderr6swcoka._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:b70inc collection rat spyware stealer

Link:

https://tria.ge/reports/240130-n3fjnagfal/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

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

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Blocklisted process makes network request

Downloads MZ/PE file

NirSoft MailPassView

NirSoft WebBrowserPassView

Nirsoft

Remcos

Malware Config

C2 Extraction:

7070bc8.sytes.net:6696

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

0.96

Link:

https://yomi.yoroi.company/submissions/37c8f5e19f127340ffd5813ab06d3e03d2bc73ae862ff0953f30c918fa561394

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.

Rule name:	SUSP_INDICATOR_RTF_MalVer_Objects Create hunting rule
Author:	ditekSHen
Description:	Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:	https://github.com/ditekshen/detection