MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32
SHA3-384 hash: b9ba494e2f722d533eb0bd07c1226ab270d02c709ed6442793558dca55a3453f2a0450c648f3087890f5e9f9f37a5d65
SHA1 hash: bda890389cdf441841377119c2eb81b29f5780a9
MD5 hash: 68fdb669425ec2a155ac6d508aa7a8a3
humanhash: october-sixteen-connecticut-idaho
File name:file
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'473'408 bytes
First seen:2023-01-31 13:11:30 UTC
Last seen:2023-01-31 14:29:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:gAzFN9Z2XBQFio7Qg/pAqqE96RoS3p/PmV08YKwTQok4U02409htjRjLYBS7Rt2c:gA36Iio7Qg2UX0TSLjRj
TLSH T15CF5B4203AFA901AF1B7BF759AE475A69E7EF6633B07954E1050038A0A13E40DDD173E
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter jstrosch
Tags:.NET exe MSIL RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
233
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-01-31 13:16:14 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/2bfa48c3-6460-4c3e-b340-7638fd30c428

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/358657/
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.63120.7425.6076.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Setting a keyboard event handler
Launching a process
Creating a window
Query of malicious DNS domain
Unauthorized injection to a system process
Verdict:
No Threat
Threat level:
  2/10
Confidence:
83%
Tags:
greyware hacktool
Link:
https://www.filescan.io/uploads/63d913a896add6d1cf49580e/reports/f630f315-77d9-42cf-945c-b170865b57a8/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/86ccf130-60f5-4965-b3f5-d1eb035b4d2c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1162396
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Deletes itself after installation
Injects a PE file into a foreign processes
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 submitted file
Sigma detected: Remcos
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 795151 Sample: file.exe Startdate: 31/01/2023 Architecture: WINDOWS Score: 100 59 Malicious sample detected (through community Yara rule) 2->59 61 Antivirus detection for URL or domain 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 4 other signatures 2->65 9 file.exe 1 2->9         started        process3 file4 39 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 9->39 dropped 69 Contains functionality to steal Chrome passwords or cookies 9->69 71 Contains functionality to inject code into remote processes 9->71 73 Contains functionality to steal Firefox passwords or cookies 9->73 75 3 other signatures 9->75 13 file.exe 7 19 9->13         started        signatures5 process6 dnsIp7 55 rem.unionbindinqcompany.it 91.193.75.232, 3361, 49701, 49739 DAVID_CRAIGGG Serbia 13->55 57 geoplugin.net 178.237.33.50, 49702, 80 ATOM86-ASATOM86NL Netherlands 13->57 41 C:\ProgramData\remcos\logs.dat, data 13->41 dropped 77 Writes to foreign memory regions 13->77 79 Maps a DLL or memory area into another process 13->79 81 Installs a global keyboard hook 13->81 18 wscript.exe 13->18         started        21 svchost.exe 12 13->21         started        23 svchost.exe 12 13->23         started        file8 signatures9 process10 signatures11 67 Deletes itself after installation 18->67 25 chrome.exe 15 1 21->25         started        28 chrome.exe 21->28         started        30 chrome.exe 23->30         started        process12 dnsIp13 49 192.168.2.1 unknown unknown 25->49 51 192.168.2.6 unknown unknown 25->51 53 239.255.255.250 unknown Reserved 25->53 32 chrome.exe 25->32         started        35 chrome.exe 28->35         started        37 chrome.exe 30->37         started        process14 dnsIp15 43 part-0032.t-0009.fdv2-t-msedge.net 13.107.237.60, 443, 49714, 49715 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 32->43 45 www.google.com 142.250.203.100, 443, 49731, 49859 GOOGLEUS United States 32->45 47 7 other IPs or domains 32->47
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-01-31 10:16:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
16 of 39 (41.03%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=32fi46ejph3alltitapmhp4eoepjk672i5dnl4r4eak2r3esrqza._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost brand:microsoft persistence phishing rat
Link:
https://tria.ge/reports/230131-qfh3dage32/
Behaviour
Enumerates system info in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Detected potential entity reuse from brand microsoft.
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
rem.unionbindinqcompany.it:3361
Unpacked files
SH256 hash:
c8035aaf04287c783562a13a560e8bc4cf8c54106029a085a92dd3079a933ca7
MD5 hash:
07cb2dc57cf2bb7895ba28a94906d1da
SHA1 hash:
d247476d2d6e5cba65cacf76ca35d27a095544c0
Link:
https://www.unpac.me/results/b890208b-190e-4250-b067-eb5d66d64065/
SH256 hash:
8f921c63d8ff677d4e08cc5f390ddee21770123716be64b5f6dc7f969a5c4ab5
MD5 hash:
149d083d4fe6911237071fa7f4764573
SHA1 hash:
31fc79b37c58a304c91ffa887f4ce498c0963a94
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/b890208b-190e-4250-b067-eb5d66d64065/
Parent samples :
c834570ccd6b2682beabbfc8d40e992d52f386aa4542edb5f171250d6f1cb549
de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32
a6bdc7d25ae942d15182d26e449c329340db53470a079647d3b6ddb06b7e28d5
SH256 hash:
de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32
MD5 hash:
68fdb669425ec2a155ac6d508aa7a8a3
SHA1 hash:
bda890389cdf441841377119c2eb81b29f5780a9
Link:
https://www.unpac.me/results/b890208b-190e-4250-b067-eb5d66d64065/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/de8a8e788979/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.78
Link:
https://yomi.yoroi.company/submissions/de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

File information

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

Web download

RemcosRAT

Executable exe de8a8e788979f605ae68981ec3bf84711e957bfa4746d5f23c2015a8ec928c32

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2518821/
Cape
Cape
https://www.capesandbox.com/analysis/358657/

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