MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02. 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 29 File information Comments
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SHA256 hash: e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02
SHA3-384 hash: b3452416395ab7a2533dbed005c6ac61138253f6cf63bedaab04e8358eefde57b6f329d6455410e9bd6ca86f4ac61c95
SHA1 hash: 0443e79625859205fc6b332990e6e4d38d9b540c
MD5 hash: f394a9576dfcde0302072c00f8228829
humanhash: zebra-network-freddie-don
File name:FHK0987654000088.BAT
Download: download sample
Signature RemcosRAT
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File size:368'318 bytes
First seen:2023-11-30 15:08:28 UTC
Last seen:2023-11-30 16:27:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:QBlL/3u6CdzVSYAw/lsTM4kTV/O62UD8XpL8Io8hQR/y9PBGP0WnIxBGsH9Dwe:id5CvgwNe6tO6xupIX84y9ZwIxbHpwe
Threatray 3'058 similar samples on MalwareBazaar
TLSH T18A742320F5F2C4A7E58706B5923B1759D53F5A300064760F07D08F9F6CA2AC1ED9BAAB
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
304
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
Remcos
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Link:
https://www.capesandbox.com/analysis/461430/
Detection(s):
SecuriteInfo.com.FileRepMalware.4736.19688.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Setting a keyboard event handler
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cf63659b-0653-4e9c-9b30-c1656ac85741
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1350602
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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 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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1350602 Sample: FHK0987654000088.BAT.exe Startdate: 30/11/2023 Architecture: WINDOWS Score: 100 50 Multi AV Scanner detection for domain / URL 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 7 other signatures 2->56 7 FHK0987654000088.BAT.exe 17 2->7         started        10 ajfo.exe 2->10         started        13 ajfo.exe 2->13         started        process3 file4 34 C:\Users\user\AppData\Local\Temp\qmhtap.exe, PE32 7->34 dropped 15 qmhtap.exe 1 2 7->15         started        58 Machine Learning detection for dropped file 10->58 60 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->60 62 Maps a DLL or memory area into another process 10->62 19 ajfo.exe 10->19         started        21 ajfo.exe 10->21         started        23 ajfo.exe 10->23         started        25 ajfo.exe 13->25         started        27 ajfo.exe 13->27         started        signatures5 process6 file7 38 C:\Users\user\AppData\Roaming\...\ajfo.exe, PE32 15->38 dropped 42 Multi AV Scanner detection for dropped file 15->42 44 Contains functionality to bypass UAC (CMSTPLUA) 15->44 46 Contains functionalty to change the wallpaper 15->46 48 8 other signatures 15->48 29 qmhtap.exe 3 3 15->29         started        signatures8 process9 dnsIp10 40 107.175.229.139, 8087 AS-COLOCROSSINGUS United States 29->40 36 C:\ProgramData\remcos\logs.dat, data 29->36 dropped 64 Installs a global keyboard hook 29->64 file11 signatures12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02
Detection:
remcos
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Link:
https://mwdb.cert.pl/sample/e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02/
Threat name:
Win32.Trojan.Remcosrat
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Status:
Malicious
First seen:
2023-11-30 12:51:06 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4ugovaak5rengmdguvolvq6iq44ayltgrdpswt6amr6h4ptczqba._file
Verdict:
malicious
Label(s):
remcos
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Similar samples:
071c44bd1144e0a1f0cf5f61bc8336b774dc3ffce0d358d32d809b8e468a78e3
RemcosRAT
47429e294cd3e52f3b4984f1343428df1c0f66c8addf008ca8f65b8d260355e2
RemcosRAT
530899098de9bc4a8be22abaffba4a79fd215d0cd06337bb872421dffe6598ad
RemcosRAT
5370332f1c37afc41f5ef1780d6d991a7ce0b93e6790addc9b8917e63036f77f
RemcosRAT
+ 3'048 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat upx
Link:
https://tria.ge/reports/231130-sjfsjadc34/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
UPX packed file
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8087
Unpacked files
SH256 hash:
a94f6f882db8e02e75f76b4979bf2313e64b4d7be435215b8b28067a5f5ff19d
MD5 hash:
987b2d2948e0fc328fe969946102bad8
SHA1 hash:
2eb0c017076b505bf3d916451e438a237aea590f
Link:
https://www.unpac.me/results/5a2c08fa-d0bc-4f85-98ed-c3b657c97742/
SH256 hash:
e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02
MD5 hash:
f394a9576dfcde0302072c00f8228829
SHA1 hash:
0443e79625859205fc6b332990e6e4d38d9b540c
Link:
https://www.unpac.me/results/5a2c08fa-d0bc-4f85-98ed-c3b657c97742/
Malware family:
Remcos
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e50cea800aec/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/e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02

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
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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_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
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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
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
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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
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
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Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
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Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
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:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:UPXv20MarkusLaszloReiser
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Author:malware-lu
Rule name:upx_3
Create hunting rule
Author:Kevin Falcoz
Description:UPX 3.X
Rule name:Windows_Trojan_Remcos_b296e965
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Author:Elastic Security
Rule name:win_remcos_auto
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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
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.

Malspam

RemcosRAT

Executable exe e50cea800aec48d33066a55cbac3c887380c2e6688df2b4fc0647c7e3e62cc02

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/461430/

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