MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c. 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 33 File information Comments 1
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SHA256 hash: f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c
SHA3-384 hash: 5860ec0030eb98ceab90314256d2e18010ab96efd0f7fb9564912ac19ca13dc5b82fafab4dae2464801da0500fac404a
SHA1 hash: d1b669631370863da9ac7b01bc3881ff4b506f18
MD5 hash: cf7bc3c744eedf62ec6452c1ab170b51
humanhash: delta-nuts-cardinal-potato
File name:cf7bc3c744eedf62ec6452c1ab170b51
Download: download sample
Signature RemcosRAT
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File size:3'825'559 bytes
First seen:2024-05-01 04:57:12 UTC
Last seen:2024-05-01 05:17:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 49152:lp98Mq2HVhvxG9I1EBn1SdaVY6kqjpr33J7cXdn7jc7QBip7aF2M2/j8e3KEggFm:lR1h2qaVnkM3eeQY2Fgxt++IY404
TLSH T18E06BF01DAAD171BD56F53B8C8A241C037B5F301A3D7FF69496AA4692C83320F974E6B
TrID 70.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.ICL) Windows Icons Library (generic) (2059/9)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter zbetcheckin
Tags:64 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
369
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
remcos
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ID:
1
File name:
f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c.exe
Verdict:
Malicious activity
Analysis date:
2024-05-01 04:57:48 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/7145eade-98fd-4c74-8053-091c7d69328d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Siggen28.40222.26918.11338.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/6631cbdb8441a327526d6adb/reports/ed397207-0a0f-4928-b02e-79f02f6083e7/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/9ccd39a8-d5b2-4381-a99b-cabfff8fec60
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/1434450
Signature
.NET source code references suspicious native API functions
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 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
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
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 submitted file
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 regedit.exe to modify the Windows registry
Writes to foreign memory regions
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: 1434450 Sample: bYPQHxUNMF.exe Startdate: 01/05/2024 Architecture: WINDOWS Score: 100 28 geoplugin.net 2->28 34 Multi AV Scanner detection for domain / URL 2->34 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 9 other signatures 2->40 8 bYPQHxUNMF.exe 2 2->8         started        signatures3 process4 signatures5 48 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->48 50 Uses regedit.exe to modify the Windows registry 8->50 52 Writes to foreign memory regions 8->52 54 Injects a PE file into a foreign processes 8->54 11 csc.exe 3 13 8->11         started        15 WerFault.exe 19 16 8->15         started        17 calc.exe 8->17         started        19 3 other processes 8->19 process6 dnsIp7 30 64.188.18.137, 1604, 49699, 49700 ASN-QUADRANET-GLOBALUS United States 11->30 32 geoplugin.net 178.237.33.50, 49704, 80 ATOM86-ASATOM86NL Netherlands 11->32 56 Contains functionality to bypass UAC (CMSTPLUA) 11->56 58 Detected Remcos RAT 11->58 60 Tries to steal Mail credentials (via file registry) 11->60 62 8 other signatures 11->62 21 csc.exe 1 11->21         started        24 csc.exe 1 11->24         started        26 csc.exe 14 11->26         started        signatures8 process9 signatures10 42 Tries to steal Instant Messenger accounts or passwords 21->42 44 Tries to steal Mail credentials (via file / registry access) 21->44 46 Tries to harvest and steal browser information (history, passwords, etc) 24->46
Score:
49%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c
Detection:
remcos
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Link:
https://mwdb.cert.pl/sample/f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c/
Threat name:
Win64.Backdoor.Remcos
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Status:
Malicious
First seen:
2024-04-29 12:17:55 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6mcquortlv46ghsv3td5ulnbuzzfsnbtawglwprslxpfthgbdmoa._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:rdec collection rat
Link:
https://tria.ge/reports/240501-fltqysgd8y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Uses the VBS compiler for execution
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
64.188.18.137:1604
Unpacked files
SH256 hash:
f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c
MD5 hash:
cf7bc3c744eedf62ec6452c1ab170b51
SHA1 hash:
d1b669631370863da9ac7b01bc3881ff4b506f18
Link:
https://www.unpac.me/results/ed49e99f-2902-450a-8412-478e0ccd0467/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f3050a3a335d/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/f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c

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
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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
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Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:QbotStuff
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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
Create hunting rule
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:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
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
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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.

Web download

RemcosRAT

Executable exe f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2833419/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments


Avatar
zbet commented on 2024-05-01 04:57:13 UTC

url : hxxps://covid19help.top/SAMM.exe