MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32. 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: 16


Intelligence 16 IOCs YARA 7 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
SHA3-384 hash: de316bedb6ac8bf4b0de16deb816dbb7ba62803dddffb99f720d7ddd10c3cbf9907c0c714be29b99a2c610573971eb03
SHA1 hash: 255df64f2dc464e5e89cd20d633605a5c02e9500
MD5 hash: 7f93ebca40acd75da0b0a599e0eb5276
humanhash: network-earth-colorado-river
File name:7f93ebca40acd75da0b0a599e0eb5276
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:909'824 bytes
First seen:2022-08-15 19:38:57 UTC
Last seen:2022-08-15 20:38:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:XzdrWAQ8UywLdFN0GLpjhIRHDF2XSITRFME390cBN9b+yzwnELvjry9CeAOPBWeB:XhLQXFRmDptE/DbYnEL0mOZWeryJ
TLSH T1F715126DB3CD8F03CA5807F190E3952607F5DA93AB33D7869EA444E10E4B3265E4A79C
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
318
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
7f93ebca40acd75da0b0a599e0eb5276
Verdict:
Malicious activity
Analysis date:
2022-08-15 19:40:41 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/74ef242b-df66-40c0-b0ff-62281d8bb5db

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/298823/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1469.28763.5362.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.PackedNET.1469.27139.24839.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
bladabindi packed
Link:
https://www.filescan.io/uploads/62faa153c8022caa1ac20ed8/reports/31675fe4-c06a-4f96-9f78-292a35a8a13b/overview
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:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/88ab3f7c-15cb-4b5b-8697-46c8e5184686
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1051867
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 684377 Sample: sLLRie1o43 Startdate: 15/08/2022 Architecture: WINDOWS Score: 100 56 Multi AV Scanner detection for domain / URL 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for dropped file 2->60 62 9 other signatures 2->62 10 sLLRie1o43.exe 3 2->10         started        13 oos.exe 3 2->13         started        16 oos.exe 2 2->16         started        18 oos.exe 2 2->18         started        process3 file4 52 C:\Users\user\AppData\...\sLLRie1o43.exe.log, ASCII 10->52 dropped 20 sLLRie1o43.exe 5 4 10->20         started        70 Injects a PE file into a foreign processes 13->70 23 oos.exe 2 2 13->23         started        27 oos.exe 16->27         started        29 oos.exe 16->29         started        31 oos.exe 18->31         started        33 oos.exe 18->33         started        signatures5 process6 dnsIp7 46 C:\Users\user\AppData\Roaming\oos.exe, PE32 20->46 dropped 48 C:\Users\user\...\oos.exe:Zone.Identifier, ASCII 20->48 dropped 50 C:\Users\user\AppData\Local\...\install.vbs, data 20->50 dropped 35 wscript.exe 1 20->35         started        54 xpremcuz300622.ddns.net 171.22.30.253, 3542, 49769 CMCSUS Germany 23->54 68 Installs a global keyboard hook 23->68 file8 signatures9 process10 process11 37 cmd.exe 1 35->37         started        process12 39 oos.exe 2 37->39         started        42 conhost.exe 37->42         started        signatures13 64 Multi AV Scanner detection for dropped file 39->64 66 Machine Learning detection for dropped file 39->66 44 oos.exe 39->44         started        process14
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-15 01:43:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gy42pfqflfuzfg4yvcru7xtx3gqppesc5rxqcl7kfxauvgdvfiza._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:xp persistence rat
Link:
https://tria.ge/reports/220815-ycybwshgc4/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
xpremcuz300622.ddns.net:3542
Unpacked files
SH256 hash:
e5db62eb9602eb4e7b1d2eda848b5f65f1ac35bc90e9127f4777b09493f1fcec
MD5 hash:
9705fef6bfdfbb7e9546fb9a9d1e4afc
SHA1 hash:
e74765ab9298b57cbad7927d693261c78075169d
Detections:
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
Parent samples :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 hash:
1d47547d5621efb3121280fe08f00efb823e493fb1b9a37327c7b7f541c468a0
MD5 hash:
8fb36237b2c69f397749a5aebc1ea6db
SHA1 hash:
c38a0c404a19336b28a42fd4f7ab0d59ac0825c4
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
SH256 hash:
44743dda09e3d58941f2330a4e3d11641a9cd1cb41306f30dd2575a17ccaec19
MD5 hash:
4e48d643ecc61d79cbff0d725c81ad88
SHA1 hash:
9c53f29dcfb790898ec9d90b8a77547064786e4e
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
SH256 hash:
535a8a800866d6cbfb289a2b40bc66855d0485fd2f84759cbfddcac03dba3ef5
MD5 hash:
ba3cedb54555e2923ef7a5fa420d0c09
SHA1 hash:
59390186f48615e4bf0c6747c1aa5a8b450716c9
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
SH256 hash:
2954c4c1582d19adeff42444a382092c60deb7709ba6ec74d4aec959f6b5c9b0
MD5 hash:
7b399d1e1b03b4011762a9960d4e9ca1
SHA1 hash:
15cbf2f77521bdbe7afe85266e9a22ee638ba1e5
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
SH256 hash:
3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
MD5 hash:
7f93ebca40acd75da0b0a599e0eb5276
SHA1 hash:
255df64f2dc464e5e89cd20d633605a5c02e9500
Link:
https://www.unpac.me/results/90ce1a95-3e12-40cb-8090-0f421f4995af/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3639a7960559/report/overview.html
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/3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32

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_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe 3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2273064/
Cape
Cape
https://www.capesandbox.com/analysis/298823/

Comments


Avatar
zbet commented on 2022-08-15 19:39:08 UTC

url : hxxp://79.110.62.213/XSW.exe