MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d
SHA3-384 hash: 8c1ac2ba898bca494b4814d9b7965efe7a585de3911adcd76548710d2ebee0502c01fabd13207701446f185297694f6d
SHA1 hash: 5f181d65c3dad46a532098e550cb3ba876226766
MD5 hash: edd828a93761dbee9f460e9d10926569
humanhash: blue-eleven-zebra-floor
File name:RFQBUDGSFED2.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'044'480 bytes
First seen:2023-10-19 13:40:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:HgkZR5kOvXGzLVIvL9PhlrWP2JNjA9K+vaa0TOH0:HtZsoGOzJiPMW9Jvaa0qU
Threatray 2'692 similar samples on MalwareBazaar
TLSH T1B1250195E8918581EC285B7A24771C2853B3BE76BDB8E24D8D8D71B42BB32D31033D5B
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 0307612c88000000 (65 x AgentTesla, 47 x RemcosRAT, 9 x MassLogger)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
194.147.140.158:1998

Intelligence

File Origin
# of uploads :
1
# of downloads :
360
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
RFQBUDGSFED2.exe
Verdict:
Malicious activity
Analysis date:
2023-10-19 13:46:06 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/59644711-f7e0-476c-a7f6-9b0bfdcd40cc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Restart of the analyzed sample
Adding an exclusion to Microsoft Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/653131f0afc17c7912f8e1e2/reports/c0ec3c45-3642-4037-88da-aa5b36dd98bd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4a95990b-ab06-4719-a6d1-55d850d2804a
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1328719
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
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
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1328719 Sample: RFQBUDGSFED2.exe Startdate: 19/10/2023 Architecture: WINDOWS Score: 100 45 geoplugin.net 2->45 51 Snort IDS alert for network traffic 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 13 other signatures 2->57 8 trOBcbEiASVaO.exe 5 2->8         started        11 RFQBUDGSFED2.exe 7 2->11         started        14 SkypeApp.exe 2 4 2->14         started        signatures3 process4 file5 59 Multi AV Scanner detection for dropped file 8->59 61 Contains functionality to bypass UAC (CMSTPLUA) 8->61 63 Contains functionalty to change the wallpaper 8->63 71 6 other signatures 8->71 16 schtasks.exe 1 8->16         started        18 trOBcbEiASVaO.exe 8->18         started        20 trOBcbEiASVaO.exe 8->20         started        22 trOBcbEiASVaO.exe 8->22         started        41 C:\Users\user\AppData\...\trOBcbEiASVaO.exe, PE32 11->41 dropped 43 C:\Users\user\AppData\Local\...\tmpC7BC.tmp, XML 11->43 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 11->65 67 Adds a directory exclusion to Windows Defender 11->67 69 Injects a PE file into a foreign processes 11->69 24 RFQBUDGSFED2.exe 2 15 11->24         started        29 powershell.exe 20 11->29         started        31 schtasks.exe 1 11->31         started        signatures6 process7 dnsIp8 33 conhost.exe 16->33         started        47 194.147.140.158, 1998, 49707 PTPEU unknown 24->47 49 geoplugin.net 178.237.33.50, 49715, 80 ATOM86-ASATOM86NL Netherlands 24->49 39 C:\ProgramData\remcos\logs.dat, data 24->39 dropped 73 Installs a global keyboard hook 24->73 35 conhost.exe 29->35         started        37 conhost.exe 31->37         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-10-19 12:37:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h5nxtezaqe3qazoo4blnqfzezpugrqyotmhaajqcpoxv7lildn6q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
34c7377e5b187edf6d660e7df34b68b968940b6de1399c2f4a3e5675099139f4
RemcosRAT
4eecb3d02825158bc36d86c8d75f37137a11576eb8fb9fec7e592648fd369f96
RemcosRAT
50c55b209d899514903835fbded92e680b34cd34e24aac9d3919522c42b543d4
RemcosRAT
7a9e4659261f4a3c4744f60dfdb170ebc705756a6b921621c24d85c4a2876318
RemcosRAT
897a97b958884456ec4bc6222c29db3057ab0df05c31de0ad02fa1b0ab6a4730
RemcosRAT
9a00523dfd6d321adb4fffbb54a1550055dde6301dddba3a5157a4169b11d462
RemcosRAT
bdaeb27128a9d6dbcd93b0844d57e6de8a03ec3b53b1380f41523ec35ad6af18
RemcosRAT
+ 2'682 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:ojolos-2 rat
Link:
https://tria.ge/reports/231019-qy4f2agc3y/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
194.147.140.158:1998
Unpacked files
SH256 hash:
eeaa2d13fa2c3c5997c3c93f5a60a796a92b0c595874788fd144a26689110a35
MD5 hash:
c65a7d72e7f6abe079c5653f9cc4a7ec
SHA1 hash:
f8c3474c029eca5acdd62a8de75fdf2824d20c2b
Link:
https://www.unpac.me/results/346f13b8-d4ec-413e-ac91-e4baa1274cec/
SH256 hash:
b1270dc9ec3f22c6fd2296239426ac7c48589589580d4a1b3da8188920b22a63
MD5 hash:
5c904da8528cfb1b87b15a6aa7c059cd
SHA1 hash:
f0a192969485d1bc34bf52adf37d9c20176d6b85
Link:
https://www.unpac.me/results/346f13b8-d4ec-413e-ac91-e4baa1274cec/
SH256 hash:
ca3a63abfa2bfbf08086f4ad3a7d05c034fcbd09e22e123172374d788333c435
MD5 hash:
fccaecef4a9234ee3b2d72ea29e3a157
SHA1 hash:
4417278d3191835189565e1c9b93f48f0abfc18b
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/346f13b8-d4ec-413e-ac91-e4baa1274cec/
Parent samples :
3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d
7c93d76a0e9fcc56590bd9ff9aff722afcca47c6645df567f4a38fc79c57e40a
SH256 hash:
55b6cb7467359aa5843d18211c5e11f2c0ec25e1e6b282596db73a65b23e1978
MD5 hash:
8127f9bf73396f3d650378c3a563f832
SHA1 hash:
4362224d0e1686b1c86cff1a5d283018154f797b
Link:
https://www.unpac.me/results/346f13b8-d4ec-413e-ac91-e4baa1274cec/
SH256 hash:
3f5b79932081370065cee056d81724cbe868c30e9b0e0026027baf5fad0b1b7d
MD5 hash:
edd828a93761dbee9f460e9d10926569
SHA1 hash:
5f181d65c3dad46a532098e550cb3ba876226766
Link:
https://www.unpac.me/results/346f13b8-d4ec-413e-ac91-e4baa1274cec/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3f5b79932081/report/overview.html
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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Comments