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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e45bc4ce4e4f84bedc7ec144517df1d16ea97b1803fa1b3cf21c581390b50bf8. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments

SHA256 hash: e45bc4ce4e4f84bedc7ec144517df1d16ea97b1803fa1b3cf21c581390b50bf8
SHA3-384 hash: b039cbac6a2adc687697426a48dea10604696aa43466aabfcd52cdfadbca9c86a66f85d277f656121485fdade46a4f19
SHA1 hash: 72265ac4686a37571cdd1f7a6961853de166dc00
MD5 hash: 8dbeaa2200e3dd4d09247606d25bec31
humanhash: missouri-comet-lion-kitten
File name:Quotation6547558,pdf.exe
Download: download sample
Signature RemcosRAT
File size:722'944 bytes
First seen:2021-02-17 20:06:36 UTC
Last seen:2021-03-09 21:15:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'239 x AgentTesla, 20'489 x Formbook, 12'372 x SnakeKeylogger)
ssdeep 12288:E2Fb1Po2rZDEUjoxDcRn0Awe9pSJ8jaD/vABJMl7z:xxtoGdoxDS4wAJ1DAU9
Threatray 1'421 similar samples on MalwareBazaar
TLSH 2BF47B212794AB6AF5BF5F3842264000E3F5A862E757EB5DFED204DF0D25B40EA26743
Reporter malwarelabnet
Tags:remcos RemcosRAT

Intelligence


File Origin
# of uploads :
3
# of downloads :
162
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
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
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: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 354429 Sample: Quotation6547558,pdf.exe Startdate: 17/02/2021 Architecture: WINDOWS Score: 100 76 favour2021.ddns.net 2->76 90 Found malware configuration 2->90 92 Malicious sample detected (through community Yara rule) 2->92 94 Multi AV Scanner detection for dropped file 2->94 96 13 other signatures 2->96 12 Quotation6547558,pdf.exe 7 2->12         started        16 remcos.exe 2->16         started        18 remcos.exe 2->18         started        signatures3 process4 file5 66 C:\Users\user\AppData\Roaming\rtzecNlXv.exe, PE32 12->66 dropped 68 C:\Users\...\rtzecNlXv.exe:Zone.Identifier, ASCII 12->68 dropped 70 C:\Users\user\AppData\Local\...\tmpE09E.tmp, XML 12->70 dropped 72 C:\Users\...\Quotation6547558,pdf.exe.log, ASCII 12->72 dropped 98 Contains functionality to steal Chrome passwords or cookies 12->98 100 Contains functionality to capture and log keystrokes 12->100 102 Contains functionality to inject code into remote processes 12->102 104 Contains functionality to steal Firefox passwords or cookies 12->104 20 Quotation6547558,pdf.exe 4 5 12->20         started        23 schtasks.exe 1 12->23         started        106 Injects a PE file into a foreign processes 16->106 25 schtasks.exe 16->25         started        27 remcos.exe 16->27         started        29 remcos.exe 16->29         started        35 2 other processes 16->35 31 schtasks.exe 18->31         started        33 remcos.exe 18->33         started        signatures6 process7 file8 62 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 20->62 dropped 64 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 20->64 dropped 37 wscript.exe 1 20->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 31->43         started        process9 process10 45 cmd.exe 1 37->45         started        process11 47 remcos.exe 5 45->47         started        51 conhost.exe 45->51         started        file12 74 C:\Users\user\AppData\...\remcos.exe.log, ASCII 47->74 dropped 82 Multi AV Scanner detection for dropped file 47->82 84 Machine Learning detection for dropped file 47->84 86 Contains functionality to steal Chrome passwords or cookies 47->86 88 3 other signatures 47->88 53 remcos.exe 2 3 47->53         started        56 schtasks.exe 1 47->56         started        58 remcos.exe 47->58         started        signatures13 process14 dnsIp15 78 favour2021.ddns.net 53->78 80 192.168.2.1 unknown unknown 53->80 60 conhost.exe 56->60         started        process16
Threat name:
Win32.Backdoor.Rescoms
Status:
Malicious
First seen:
2021-01-27 10:14:36 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos persistence rat
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Remcos
Malware Config
C2 Extraction:
favour2021.ddns.net:1990
Unpacked files
SH256 hash:
423dde5053872099ad109ae3edeb31d86a82bf8ad7d992e60fcd73bfc91a22d1
MD5 hash:
4471794639b3ad86e34cdc1adfc28364
SHA1 hash:
606e0f7f930194769dd172b00e203ae676be3a00
Detections:
win_remcos_g0 win_remcos_auto
SH256 hash:
0e299daa9c1354b5f79f7c3e6220b0c2c7e05565928cd18f0d27714d4a34c8b4
MD5 hash:
502da1a36045ba6d53a82c782b80f112
SHA1 hash:
5496c9727f7686dae99360810b0f2689600d5683
SH256 hash:
ac4512c817c309261d8198967719f4e284f6b701a81c0ccc58d64c81aeb9048a
MD5 hash:
f7b258e18e4a156535d10710b26d0f4e
SHA1 hash:
402934203483bb6e2afa1705905c470a374bb44a
SH256 hash:
e45bc4ce4e4f84bedc7ec144517df1d16ea97b1803fa1b3cf21c581390b50bf8
MD5 hash:
8dbeaa2200e3dd4d09247606d25bec31
SHA1 hash:
72265ac4686a37571cdd1f7a6961853de166dc00
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:ach_RemcosRAT
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information


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

Malspam

RemcosRAT

Executable exe e45bc4ce4e4f84bedc7ec144517df1d16ea97b1803fa1b3cf21c581390b50bf8

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments