MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
SHA3-384 hash: f1bfd0d1174cb03694055880a4c7dddd7c1ad25fbd646e9a5d638540897395c0699e312f0eaa2dc5fe8e244f1168a885
SHA1 hash: 33ae188d83c9bdcfc1e7c37604011161564d1ad3
MD5 hash: 041848dfe86c9d7e4f84a3b4bf065075
humanhash: summer-london-zulu-skylark
File name:Quotation_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:961'024 bytes
First seen:2024-09-19 12:28:20 UTC
Last seen:2024-09-19 12:29:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 24576:OiwEHfhzre4gZVF4tspROMsDInpvmMB/pAzDbY:/7SF4toYFqUDU
Threatray 4'291 similar samples on MalwareBazaar
TLSH T19F1512A02358FF5AC8940BFA0476E37147B22E9EF428F30A4FDAADC77555709A805D93
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)
Magika pebin
File icon (PE):PE icon
dhash icon 0c6e62e2faaac0c8 (6 x AgentTesla, 5 x Formbook, 2 x SnakeKeylogger)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
391
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Quotation_pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-09-19 13:18:57 UTC
Tags:
rat remcos remote evasion
Link:
https://app.any.run/tasks/f2e39203-5418-4bac-bd0c-5e6829080eb9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3057.14795.25861.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ec196177496a3b0d6ef47b
Tags:
Discovery Execution Network Static Stealth Msil
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66ec191c0883d6a903eca2a1/reports/baa8850f-5a51-4f0b-a502-cfb09cece56e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
Result
Verdict:
MALICIOUS
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d09d72e4-ba74-4607-8442-d4a93e68e0e5
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1513871
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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
Suricata IDS alerts for network traffic
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1513871 Sample: Quotation_pdf.exe Startdate: 19/09/2024 Architecture: WINDOWS Score: 100 48 nnamoo.duckdns.org 2->48 50 15.164.165.52.in-addr.arpa 2->50 52 geoplugin.net 2->52 60 Suricata IDS alerts for network traffic 2->60 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 68 12 other signatures 2->68 8 Quotation_pdf.exe 7 2->8         started        12 rxEKvCaIrm.exe 5 2->12         started        signatures3 66 Uses dynamic DNS services 48->66 process4 file5 40 C:\Users\user\AppData\...\rxEKvCaIrm.exe, PE32 8->40 dropped 42 C:\Users\...\rxEKvCaIrm.exe:Zone.Identifier, ASCII 8->42 dropped 44 C:\Users\user\AppData\Local\...\tmp1728.tmp, XML 8->44 dropped 46 C:\Users\user\...\Quotation_pdf.exe.log, ASCII 8->46 dropped 70 Uses schtasks.exe or at.exe to add and modify task schedules 8->70 72 Adds a directory exclusion to Windows Defender 8->72 74 Injects a PE file into a foreign processes 8->74 14 Quotation_pdf.exe 2 13 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 22 8->20         started        22 schtasks.exe 1 8->22         started        76 Multi AV Scanner detection for dropped file 12->76 78 Contains functionalty to change the wallpaper 12->78 80 Machine Learning detection for dropped file 12->80 82 4 other signatures 12->82 24 rxEKvCaIrm.exe 12->24         started        26 schtasks.exe 1 12->26         started        28 rxEKvCaIrm.exe 12->28         started        signatures6 process7 dnsIp8 54 nnamoo.duckdns.org 103.186.117.126, 49720, 59321 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 14->54 56 127.0.0.1 unknown unknown 14->56 58 geoplugin.net 178.237.33.50, 49722, 80 ATOM86-ASATOM86NL Netherlands 14->58 84 Detected Remcos RAT 14->84 86 Loading BitLocker PowerShell Module 18->86 30 WmiPrvSE.exe 18->30         started        32 conhost.exe 18->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 26->38         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-09-12 06:10:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=imcpmdy67xce7obommwx22qvuywila5kxeknuchmoo4ly4e2ecnq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809
RemcosRAT
4e1899294fcd9043ed50cb9f02a7085b4c243deb30e3c2d5bdaeac2569fe0e6e
RemcosRAT
6f19b81c0a43cadb5d5447e3dc0485c04fd400d4a0656ff4af092ab9faac7213
RemcosRAT
d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd
RemcosRAT
e67ae0c8bca17f912e1fdcc8dacac7e967ac9dfcfc031d944663043c99f32ea7
RemcosRAT
+ 4'281 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery execution rat
Link:
https://tria.ge/reports/240919-pnzjnayfnk/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Malware Config
C2 Extraction:
127.0.0.1:59321
nnamoo.duckdns.org:59321
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c00901a2-f67e-4f43-a45a-555179b2d1c7
Unpacked files
SH256 hash:
2a03a0ccd6a2e0bbbf78397add3ab73643ac480a2f009636c4ed98bd6e9de9aa
MD5 hash:
e479a0191a8c5dd3aef68af966914b43
SHA1 hash:
fb6c8eebd1e422189dc7528092286e89719331bc
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/d0a13e66-2d2a-484d-b47c-af799b4e4ea8/
Parent samples :
8fb486798392dbf7aeeae64d1338d5be840b88b9be64e271c83010039a96b5bf
d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9
4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
49e7ee12a475105efab2e363450b2e5582fc05d114967fe57a3d80d22a2fea81
8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5
cd76524a5a1a193336ce0a72efa54af99367743c2d380d0416a1d09a516fad8b
SH256 hash:
aa206b3b23a3ca2e6b0dbcd83059c4525a76514dedc478b4c5409c50ff139c87
MD5 hash:
8d26ac1af8178188f1a0292c190bfd69
SHA1 hash:
727d630005ff6e1c61315516c900a9283cfa8cda
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/d0a13e66-2d2a-484d-b47c-af799b4e4ea8/
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/d0a13e66-2d2a-484d-b47c-af799b4e4ea8/
SH256 hash:
4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
MD5 hash:
041848dfe86c9d7e4f84a3b4bf065075
SHA1 hash:
33ae188d83c9bdcfc1e7c37604011161564d1ad3
Link:
https://www.unpac.me/results/d0a13e66-2d2a-484d-b47c-af799b4e4ea8/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4304f60f1efd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe 4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b

(this sample)

  
Delivery method
Distributed via e-mail attachment

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 (HIGH_ENTROPY_VA)high

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