MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91ec6c67b47495684c3911f25b793efec0af28162200cf44b00c70308b8a52e8. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments

SHA256 hash: 91ec6c67b47495684c3911f25b793efec0af28162200cf44b00c70308b8a52e8
SHA3-384 hash: 5a7a77fae0ca786a9ed27bd217222a1b284f3a80359b78b1bf3a20a7fed40e9d2f6b8e3cf2f080abe20f6b6a7c3337ab
SHA1 hash: 66cc59df26cbd680be3a7cf10b31df0ff0dec229
MD5 hash: 499c2c29f1f3936af28917c28b82d534
humanhash: football-lactose-wisconsin-five
File name:Payment Advice - W41901,pdf.exe
Download: download sample
Signature RemcosRAT
File size:1'111'552 bytes
First seen:2021-08-19 19:11:33 UTC
Last seen:2021-08-19 20:02:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash cd897a852beb0d729ee0e0d2a4c10746 (5 x RemcosRAT)
ssdeep 12288:Qq8SB+x3pPT30Sv6kGDbdYMqFMS7kLWa4H+NZ6rq436TD9dFSKt8Ed8Fj0RIRcDE:r5UzPT3Bv6L9kaDNZAcFSXvVRQyP
Threatray 537 similar samples on MalwareBazaar
TLSH T115358EC9FB7F9CF2C0224F349F3AA66AA4267D103B597C4666C48F495EED151782BC02
dhash icon 1120767d64360841 (5 x RemcosRAT)
Reporter malwarelabnet
Tags:exe remcos RemcosRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment Advice - W41901,pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-08-19 19:14:51 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Delayed writing of the file
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Deleting a recently created file
Sending a UDP request
Launching a process
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 468437 Sample: Payment Advice - W41901,pdf.exe Startdate: 19/08/2021 Architecture: WINDOWS Score: 100 26 clientconfig.passport.net 2->26 48 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->48 50 Multi AV Scanner detection for domain / URL 2->50 52 Found malware configuration 2->52 54 7 other signatures 2->54 7 Payment Advice - W41901,pdf.exe 1 19 2->7         started        12 Zhacmwa.exe 15 2->12         started        14 Zhacmwa.exe 2->14         started        signatures3 process4 dnsIp5 28 smpvlw.dm.files.1drv.com 7->28 30 onedrive.live.com 7->30 32 dm-files.fe.1drv.com 7->32 22 C:\Users\Public\Libraries\...\Zhacmwa.exe, PE32 7->22 dropped 56 Writes to foreign memory regions 7->56 58 Creates a thread in another existing process (thread injection) 7->58 60 Injects a PE file into a foreign processes 7->60 16 mobsync.exe 2 7->16         started        34 192.168.2.1 unknown unknown 12->34 36 smpvlw.dm.files.1drv.com 12->36 38 2 other IPs or domains 12->38 62 Antivirus detection for dropped file 12->62 64 Multi AV Scanner detection for dropped file 12->64 20 WerFault.exe 20 7 14->20         started        file6 signatures7 process8 dnsIp9 24 goddywin.freedynamicdns.net 185.140.53.15, 4108, 49718 DAVID_CRAIGGG Sweden 16->24 40 Contains functionality to steal Chrome passwords or cookies 16->40 42 Contains functionality to inject code into remote processes 16->42 44 Contains functionality to steal Firefox passwords or cookies 16->44 46 Delayed program exit found 16->46 signatures10
Threat name:
Win32.Trojan.Woreflint
Status:
Malicious
First seen:
2021-08-19 19:12:06 UTC
AV detection:
15 of 27 (55.56%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:nwanne'm persistence rat
Behaviour
Suspicious use of WriteProcessMemory
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
goddywin.freedynamicdns.net:4108
Unpacked files
SH256 hash:
795b2b5d6668147d7924ac96f90741ddc2a2b5003f455fb842b613a286fbf8fc
MD5 hash:
53011b69a7231aea23d66805a681144b
SHA1 hash:
e3d0d157e763c865e79ccc5bedc2fd5fd90413f7
SH256 hash:
91ec6c67b47495684c3911f25b793efec0af28162200cf44b00c70308b8a52e8
MD5 hash:
499c2c29f1f3936af28917c28b82d534
SHA1 hash:
66cc59df26cbd680be3a7cf10b31df0ff0dec229
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:ach_RemcosRAT
Author:abuse.ch
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EnvVarScheduledTasks
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC (ab)using Environment Variables in Scheduled Tasks
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants

File information


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

Comments