MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b. 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 16 File information Comments
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SHA256 hash: 839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b
SHA3-384 hash: acde381a3db9f5f223cbc400a65e5c8275bf799acf75e7696080bffc403d8f0835665665b725ee20482e5018798d79b0
SHA1 hash: ba374eb42010c5cf44fdc259983dc44442cb0753
MD5 hash: 3f6158f27ef80630313026f52cac93f4
humanhash: ohio-monkey-blossom-carpet
File name:ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe
Download: download sample
Signature RemcosRAT
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File size:1'007'616 bytes
First seen:2024-02-08 09:32:33 UTC
Last seen:2024-02-08 11:37:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:4Nxc5Gjn6R/TiWtnTS65ox40AjuCDLym06vQvyi3B:CxfjnkOYJ5cbuLyZ9
TLSH T1D32512116EACCB56E4BD43F0C42113F04771AE66D9A2E22B5EC67DDF3875B404A22E1B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter cocaman
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
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ID:
1
File name:
839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b.exe
Verdict:
Malicious activity
Analysis date:
2024-02-08 09:37:22 UTC
Tags:
rat remcos remote keylogger stealer
Link:
https://app.any.run/tasks/08297e75-3722-4eb6-88c6-ede0454bca38

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
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Link:
https://www.capesandbox.com/analysis/475347/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.991.17156.UNOFFICIAL
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Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed remcos
Link:
https://www.filescan.io/uploads/65c49fdb29ab210c3fabe7f6/reports/6db8de41-f3a1-4106-816a-62686d199ec8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b
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:
MSIL Injector
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f53d0da4-6268-41c1-9b99-26b62b7987a4
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388946
Signature
.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 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
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
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
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)
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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1388946 Sample: ORDER SPECIFICATION FOR 790... Startdate: 08/02/2024 Architecture: WINDOWS Score: 100 52 paygateme.net 2->52 54 geoplugin.net 2->54 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus detection for URL or domain 2->68 70 15 other signatures 2->70 8 ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe 7 2->8         started        12 opYxqsS.exe 5 2->12         started        signatures3 process4 file5 46 C:\Users\user\AppData\Roaming\opYxqsS.exe, PE32 8->46 dropped 48 C:\Users\user\AppData\Local\...\tmp9B2E.tmp, XML 8->48 dropped 72 Adds a directory exclusion to Windows Defender 8->72 74 Injects a PE file into a foreign processes 8->74 14 ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe 3 15 8->14         started        19 powershell.exe 23 8->19         started        21 schtasks.exe 1 8->21         started        76 Multi AV Scanner detection for dropped file 12->76 78 Contains functionality to bypass UAC (CMSTPLUA) 12->78 80 Contains functionalty to change the wallpaper 12->80 82 4 other signatures 12->82 23 schtasks.exe 1 12->23         started        25 opYxqsS.exe 12->25         started        27 opYxqsS.exe 12->27         started        signatures6 process7 dnsIp8 56 paygateme.net 146.70.57.34, 2286, 49707, 49710 TENET-1ZA United Kingdom 14->56 58 geoplugin.net 178.237.33.50, 49711, 80 ATOM86-ASATOM86NL Netherlands 14->58 50 C:\ProgramData\remcos\logs.dat, data 14->50 dropped 60 Maps a DLL or memory area into another process 14->60 62 Installs a global keyboard hook 14->62 29 ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe 14->29         started        32 ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe 14->32         started        34 ORDER SPECIFICATION FOR 790407 UPLASTICO 2024.exe 14 14->34         started        44 3 other processes 14->44 36 WmiPrvSE.exe 19->36         started        38 conhost.exe 19->38         started        40 conhost.exe 21->40         started        42 conhost.exe 23->42         started        file9 signatures10 process11 signatures12 84 Tries to steal Instant Messenger accounts or passwords 29->84 86 Tries to steal Mail credentials (via file / registry access) 29->86 88 Tries to harvest and steal browser information (history, passwords, etc) 32->88
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
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Status:
Malicious
First seen:
2024-02-08 09:32:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qon6lyvgkoz7xvbtobad2btlc3sn2iwym6mxwukw3zrb6rf7a4vq._file
Verdict:
malicious
Label(s):
remcos
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Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Link:
https://tria.ge/reports/240208-lh65rsbh7z/
Behaviour
Creates scheduled task(s)
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
Checks computer location settings
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
paygateme.net:2286
Unpacked files
SH256 hash:
4a2cf6ab29f939e528e7fb11617ccf6ad393ba0ee5c05a204dd7a61f269b0f15
MD5 hash:
fad2a4b1e771bf543c9a83d1319707c4
SHA1 hash:
f9a09428e4bb6cb0cfd0ca8a12c8c2fd5970437d
Detections:
Remcos
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win_remcos_w0
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win_remcos_auto
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malware_windows_remcos_rat
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INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
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Link:
https://www.unpac.me/results/cbd9cd09-be50-4ec4-a081-4fb21f258710/
Parent samples :
7d5fb292b4477237a05a35eb135a13c9f6d1177987217e94c3558b91fa97c285
c427e24d1c15e6b3e50e91fba701c2dafdafbabd1bcb0c629f8dcb9b33af8bd6
839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b
344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549
SH256 hash:
294c3e588ae58884e39e16d2d4a7720c4c60dedf7e7383126b48361b11cf9daa
MD5 hash:
9d3be8356aee21bcc6427b0388f40825
SHA1 hash:
e861a73b0d6afc6e0de25ae3d9a5b8dc653c488f
Link:
https://www.unpac.me/results/cbd9cd09-be50-4ec4-a081-4fb21f258710/
SH256 hash:
5fe50b7d9a6e9214e727581ebb1dfeb43e175c39ba3966684030f5da4c0c64bf
MD5 hash:
f6b2186dd134aed59815a420cc5ccc8c
SHA1 hash:
569326a8f69da0b50854f18c86805b019cd902fd
Link:
https://www.unpac.me/results/cbd9cd09-be50-4ec4-a081-4fb21f258710/
SH256 hash:
f53bef4888dc4cdbd300fe9164be1619415c151c916537efb20f1b42bb5980b9
MD5 hash:
0cde708a2f1b8399849ddb74560a4e7c
SHA1 hash:
0e1ac56188859701235d150aec8e96b2ffabc5ef
Link:
https://www.unpac.me/results/cbd9cd09-be50-4ec4-a081-4fb21f258710/
SH256 hash:
839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b
MD5 hash:
3f6158f27ef80630313026f52cac93f4
SHA1 hash:
ba374eb42010c5cf44fdc259983dc44442cb0753
Link:
https://www.unpac.me/results/cbd9cd09-be50-4ec4-a081-4fb21f258710/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/839be5e2a653/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/839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b

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:AgentTesla_DIFF_Common_Strings_01
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Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:DebuggerCheck__API
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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
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Author:Didier Stevens (https://DidierStevens.com)
Rule name:NET
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Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
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
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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

r01 b170872193e5d3fac34893de20ab05db895668f427a5188821e35ff59ac4ea23

RemcosRAT

Executable exe 839be5e2a653b3fbd43370403d066b16e4dd22d867997b5156de621f44bf072b

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 b170872193e5d3fac34893de20ab05db895668f427a5188821e35ff59ac4ea23
Cape
Cape
https://www.capesandbox.com/analysis/475347/
  
Dropped by
MD5 978eddbb46d1d750a8035e8f5ca54372

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