MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b. 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: 18


Intelligence 18 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b
SHA3-384 hash: c952f764fe9184a98412f494458b8676d4b43f53e8f09ee061e1400bbf82d44f25bbf31c0040667bcdec95ae7265143b
SHA1 hash: e0310f7cfc3824eb05768a9212fced3cf6787764
MD5 hash: 05895d7e7c006e73c304f641905d071d
humanhash: golf-magazine-october-orange
File name:REM098654567800.bat.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:724'992 bytes
First seen:2023-11-06 10:15:13 UTC
Last seen:2023-11-06 12:39:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:elZyANgK6t30+94CBApGo8CVTVwD/TSiuUmlBy+gHlu13bREQoIWvYs0eePyRYiN:e3yKn6CCBMbVTmD/LeW+cetEQtWvN0AN
TLSH T1ECF40194E2E4A233C2AA03F5DDF6E2441BFCF60266D7C2460D8AE1E5A55E75A0CC1DC3
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4505/5/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
107.175.229.139:8087

Intelligence

File Origin
# of uploads :
2
# of downloads :
353
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
REM098654567800.bat.exe
Verdict:
Malicious activity
Analysis date:
2023-11-06 13:17:20 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/90b98b5c-1235-418a-922b-0f98948ca7a5

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/458207/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.63754.27019.23465.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed remcos
Link:
https://www.filescan.io/uploads/6548bce8641154c7e3ebda53/reports/43eaabc1-4f76-406d-bfc8-c0822f2a6694/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b
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/dff7344c-b7c8-4ebc-b5ac-37fa5c2ccafc
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1337539
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to capture screen (.Net source)
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
Creates executable files without a name
Delayed program exit found
Drops PE files to the startup folder
Found 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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Copy file to startup via Powershell
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)
Writes to foreign memory regions
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: 1337539 Sample: REM098654567800.bat.exe Startdate: 06/11/2023 Architecture: WINDOWS Score: 100 41 geoplugin.net 2->41 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 16 other signatures 2->53 8 REM098654567800.bat.exe 3 2->8         started        11 .exe 3 2->11         started        signatures3 process4 signatures5 55 Bypasses PowerShell execution policy 8->55 57 Writes to foreign memory regions 8->57 59 Injects a PE file into a foreign processes 8->59 13 cvtres.exe 3 16 8->13         started        18 powershell.exe 13 8->18         started        20 powershell.exe 11 11->20         started        22 cvtres.exe 11->22         started        process6 dnsIp7 43 107.175.229.139, 49708, 49709, 8087 AS-COLOCROSSINGUS United States 13->43 45 geoplugin.net 178.237.33.50, 49710, 80 ATOM86-ASATOM86NL Netherlands 13->45 37 C:\ProgramData\remcos\logs.dat, data 13->37 dropped 67 Contains functionality to bypass UAC (CMSTPLUA) 13->67 69 Tries to steal Mail credentials (via file registry) 13->69 71 Contains functionalty to change the wallpaper 13->71 79 8 other signatures 13->79 24 cvtres.exe 1 13->24         started        27 cvtres.exe 1 13->27         started        29 cvtres.exe 2 13->29         started        35 4 other processes 13->35 39 C:\Users\user\AppData\Roaming\...\.exe, PE32 18->39 dropped 73 Creates executable files without a name 18->73 75 Drops PE files to the startup folder 18->75 77 Powershell drops PE file 18->77 31 conhost.exe 18->31         started        33 conhost.exe 20->33         started        file8 signatures9 process10 signatures11 61 Tries to steal Instant Messenger accounts or passwords 24->61 63 Tries to harvest and steal browser information (history, passwords, etc) 24->63 65 Tries to steal Mail credentials (via file / registry access) 27->65
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b/
Threat name:
ByteCode-MSIL.Trojan.Heracles
Create hunting rule
Status:
Malicious
First seen:
2023-11-06 09:53:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ehuxguwzsqm6q56akvcs5gsgfksplsr3wbtw3o5rf5iuf6e426nq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remcosbin collection rat
Link:
https://tria.ge/reports/231106-masg3sca74/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8087
Unpacked files
SH256 hash:
2df81b7a7580dd8099502f1caaf6ecf3af80d9b04ffe32cf2ac7834d944cc1f2
MD5 hash:
4cfae6afed1c1626499592c0d6711f93
SHA1 hash:
9f41bbd487e22867d3942e0db7a394ae00a69009
Link:
https://www.unpac.me/results/65fd7be3-57e1-49a3-b765-ec0e39e869e4/
SH256 hash:
4524098708067ecf052298acecdaf97d7035107885b76c99522aed825b551049
MD5 hash:
bef3583e38eb82d9974fce0dc1e7707d
SHA1 hash:
51872a3a5129f54d01ef4c24c35268df678551bc
Detections:
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/65fd7be3-57e1-49a3-b765-ec0e39e869e4/
SH256 hash:
2632c095fa87462597da81b732a65b11636b4267001729e371f4cdbbba1586dd
MD5 hash:
996e2e73de6aaaa4f3ec38b7c18a92d4
SHA1 hash:
310b8de5d66c9764f6be149a75ac848dfee635c3
Link:
https://www.unpac.me/results/65fd7be3-57e1-49a3-b765-ec0e39e869e4/
SH256 hash:
21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b
MD5 hash:
05895d7e7c006e73c304f641905d071d
SHA1 hash:
e0310f7cfc3824eb05768a9212fced3cf6787764
Link:
https://www.unpac.me/results/65fd7be3-57e1-49a3-b765-ec0e39e869e4/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/21e97352d994/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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
Rule name:yara_template
Create hunting rule

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/458207/

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