MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596. 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: 15


Intelligence 15 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596
SHA3-384 hash: 395d4dc6008c1c10966b4a054ea3948b4ff8ba036b4e81f9d48a1c4d71c384dbd7aa4160eef660f1d609cba5fcbdfc53
SHA1 hash: 774d345b00e8dd09732bc8a01a4208e76e5a62dd
MD5 hash: 1197e7a27b14835cf1acf9c3cf35ca74
humanhash: jig-two-ink-grey
File name:87654345678900-98.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:406'259 bytes
First seen:2023-11-01 08:04:29 UTC
Last seen:2023-11-01 09:15:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:h8LxBnEhX9iCpLqrCVyMshjXlw6Nr1sOfiFtDXW/c5Q2Q56NGEi6uRFqFYqjyHWq:sE+6BVLCrXiFthhf43zq2vl
Threatray 419 similar samples on MalwareBazaar
TLSH T1078423DA31F0C5B3E57342720DBB9F7DE3D6AAB88290868B57983F3645A0607DD0D192
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter cocaman
Tags:exe payment RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
311
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/457562/
Detection(s):
SecuriteInfo.com.FileRepMalware.14332.5530.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Setting a keyboard event handler
Sending a custom TCP request
Creating a file
DNS request
Sending an HTTP GET request
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a recently created process
Stealing user critical data
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/654206ba4ebf05ac3f40ba95/reports/4acd5d2f-6731-4a66-b41b-761e158d2949/overview
Verdict:
Malicious
Labled as:
Jaik.Generic
Link:
https://www.hybrid-analysis.com/sample/659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596
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/0ab30bbf-6714-4735-972c-4cce7c95c22f
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1335334
Signature
Antivirus / Scanner detection for submitted sample
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 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 evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for sample
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
Sigma detected: Remcos
Snort IDS alert for network traffic
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1335334 Sample: 87654345678900-98.exe Startdate: 01/11/2023 Architecture: WINDOWS Score: 100 49 geoplugin.net 2->49 71 Snort IDS alert for network traffic 2->71 73 Multi AV Scanner detection for domain / URL 2->73 75 Found malware configuration 2->75 77 10 other signatures 2->77 9 87654345678900-98.exe 17 2->9         started        12 xhdmirbwpluqaj.exe 2->12         started        15 xhdmirbwpluqaj.exe 2->15         started        signatures3 process4 file5 45 C:\Users\user\AppData\Local\Temp\aiwox.exe, PE32 9->45 dropped 17 aiwox.exe 1 2 9->17         started        79 Multi AV Scanner detection for dropped file 12->79 81 Contains functionality to bypass UAC (CMSTPLUA) 12->81 83 Contains functionalty to change the wallpaper 12->83 87 5 other signatures 12->87 21 xhdmirbwpluqaj.exe 12->21         started        23 xhdmirbwpluqaj.exe 12->23         started        25 xhdmirbwpluqaj.exe 12->25         started        85 Maps a DLL or memory area into another process 15->85 27 xhdmirbwpluqaj.exe 15->27         started        signatures6 process7 file8 43 C:\Users\user\AppData\...\xhdmirbwpluqaj.exe, PE32 17->43 dropped 57 Multi AV Scanner detection for dropped file 17->57 59 Contains functionality to bypass UAC (CMSTPLUA) 17->59 61 Tries to steal Mail credentials (via file registry) 17->61 63 8 other signatures 17->63 29 aiwox.exe 3 16 17->29         started        signatures9 process10 dnsIp11 51 91.92.241.117, 49723, 49726, 8787 THEZONEBG Bulgaria 29->51 53 80.76.51.172, 8787 CLOUDCOMPUTINGDE Bulgaria 29->53 55 geoplugin.net 178.237.33.50, 49725, 80 ATOM86-ASATOM86NL Netherlands 29->55 47 C:\ProgramData\remcos\logs.dat, data 29->47 dropped 89 Maps a DLL or memory area into another process 29->89 91 Installs a global keyboard hook 29->91 34 aiwox.exe 1 29->34         started        37 aiwox.exe 1 29->37         started        39 aiwox.exe 2 29->39         started        41 aiwox.exe 29->41         started        file12 signatures13 process14 signatures15 65 Tries to steal Instant Messenger accounts or passwords 34->65 67 Tries to steal Mail credentials (via file / registry access) 34->67 69 Tries to harvest and steal browser information (history, passwords, etc) 37->69
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596/
Threat name:
Win32.Trojan.Generic
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Status:
Malicious
First seen:
2023-11-01 02:11:58 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
20 of 23 (86.96%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mwnpnrknghhrltokidbjswobmdsh4zjfj4lymypzrad3msp5wwla._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13c527233819f76ce94c4ab839838a213acd727de5cae5660222a5c4ddd8d5b4
RemcosRAT
1a5c013bfce405b156b314d2bac3db8f4e4bff2641ecba752416039c5dff5f2a
RemcosRAT
1ce13b1a107d66487c04da7180452270eebd76b7f0bcd1df37512fd1306d6656
RemcosRAT
280945c850b2ee81256b36dacdec35b2bbc147c3cba57b344cd50bf464d74f97
RemcosRAT
2d12bedd8d6cee6c6fbee5ccb9d7dd25fc6693d9d6a7a0207104f94b681b55aa
RemcosRAT
483d7f7379d43c9fb3effb226cb58a443f48105bda3a9a6310a76729d7c1b3bd
RemcosRAT
4f4a8ff83672c8134227742b12e228e512d32e3c3dabb8e96bdc6b28628d3d26
RemcosRAT
7fd1e285f1e5ce2a63513d7122f54b4c02bec1645aab6ae3b74139a60805bd4c
RemcosRAT
f1efd86756d2b913e17e6de502d9de494ffa89b503a209f4d82d204ad1d4be6b
RemcosRAT
+ 409 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat spyware stealer upx
Link:
https://tria.ge/reports/231101-jyts9sef93/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
UPX packed file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
80.76.51.172:8787
91.92.241.117:8787
Unpacked files
SH256 hash:
659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596
MD5 hash:
1197e7a27b14835cf1acf9c3cf35ca74
SHA1 hash:
774d345b00e8dd09732bc8a01a4208e76e5a62dd
Link:
https://www.unpac.me/results/2d5ff978-8731-427d-aff6-20b9039af092/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/659af6c54d31/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:UPXv20MarkusLaszloReiser
Create hunting rule
Author:malware-lu
Rule name:upx_3
Create hunting rule
Author:Kevin Falcoz
Description:UPX 3.X
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Malspam

RemcosRAT

zip 879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab

RemcosRAT

Executable exe 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab
Cape
Cape
https://www.capesandbox.com/analysis/457562/
  
Dropped by
MD5 be556f66e3086d9bf5465c33d51c0921

Comments