MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2. 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: 9


Intelligence 9 IOCs YARA 10 File information Comments
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SHA256 hash: 13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2
SHA3-384 hash: 2f320ac261c21155e208552ddb3eb30d297f18b713c5313f9b85206aa1f39a5f7d075a444cd20965b0f946bc57190f65
SHA1 hash: b637b9f383276cf58a6d0c2190213e6df681821f
MD5 hash: 741ae9506bfb256797b80215497abbd8
humanhash: coffee-sink-red-april
File name:SecuriteInfo.com.Variant.Bulz.368783.31325.6282
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:36'816 bytes
First seen:2021-02-23 10:49:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:wBYybRvDZmPWtmOKWH9EaHAFixLSQS1sSYh4:wBYavDyWAO/dE+0ixLlVw
Threatray 1'591 similar samples on MalwareBazaar
TLSH E9F2E8DD9EF36A36EBF906311933450905B1A049BA24DD7F4DEC09F58482A87FEE7860
Reporter SecuriteInfoCom
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Variant.Bulz.368783.31325.6282.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Running batch commands
Creating a process with a hidden window
Launching a process
Adding an access-denied ACE
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Creating a window
Deleting a recently created file
Sending a UDP request
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/615163
Signature
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Found malware configuration
Hides threads from debuggers
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
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 356589 Sample: SecuriteInfo.com.Variant.Bu... Startdate: 23/02/2021 Architecture: WINDOWS Score: 100 62 wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu 2->62 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Multi AV Scanner detection for submitted file 2->78 80 7 other signatures 2->80 12 SecuriteInfo.com.Variant.Bulz.368783.31325.exe 15 3 2->12         started        16 win.exe 2->16         started        18 win.exe 2->18         started        signatures3 process4 dnsIp5 68 coroloboxorozor.com 104.21.71.230, 49711, 49732, 80 CLOUDFLARENETUS United States 12->68 90 Contains functionality to steal Chrome passwords or cookies 12->90 92 Contains functionality to capture and log keystrokes 12->92 94 Contains functionality to inject code into remote processes 12->94 100 2 other signatures 12->100 20 SecuriteInfo.com.Variant.Bulz.368783.31325.exe 4 4 12->20         started        23 cmd.exe 1 12->23         started        25 WerFault.exe 23 9 12->25         started        27 SecuriteInfo.com.Variant.Bulz.368783.31325.exe 12->27         started        70 192.168.2.1 unknown unknown 16->70 96 Hides threads from debuggers 16->96 98 Injects a PE file into a foreign processes 16->98 29 cmd.exe 16->29         started        signatures6 process7 file8 58 C:\Users\user\AppData\Roaming\win.exe, PE32 20->58 dropped 60 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 20->60 dropped 31 wscript.exe 1 20->31         started        33 conhost.exe 23->33         started        35 timeout.exe 1 23->35         started        37 conhost.exe 29->37         started        process9 process10 39 cmd.exe 1 31->39         started        process11 41 win.exe 14 3 39->41         started        45 conhost.exe 39->45         started        dnsIp12 64 172.67.172.17, 49725, 49726, 80 CLOUDFLARENETUS United States 41->64 66 coroloboxorozor.com 41->66 82 Multi AV Scanner detection for dropped file 41->82 84 Machine Learning detection for dropped file 41->84 86 Hides threads from debuggers 41->86 88 Injects a PE file into a foreign processes 41->88 47 win.exe 41->47         started        50 cmd.exe 41->50         started        52 WerFault.exe 41->52         started        signatures13 process14 dnsIp15 72 wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu 37.230.130.37, 1996 VOXILITYGB Netherlands 47->72 54 conhost.exe 50->54         started        56 timeout.exe 50->56         started        process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-23 09:49:31 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=co66t33rk7xepruqnru6n7qnqefqjttaxc2pfz2hipndhzjg3pza._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
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RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
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5ab68910c53ccaea0aa6c9e51fa8ad92433cba369163f99f636973b32abda555
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5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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8ad4673a5a2ee2234da8c27616549d2071d43e769850dad6b09ee95ed939d44c
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b4156e553eb5b0bad1d240dd170820106d6ca6bc0d1984a9d09030864349d964
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c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42
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da7f542b91835ba3090350c2936641058c361e332eda9222f0674dfcbefd4ce9
RemcosRAT
eea168e9c8f089b1c8aa25fe54e17f987ea0a85b24009197d77c08295f4cf2a4
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f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'581 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210223-1xh6ffw6sj/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996
Unpacked files
SH256 hash:
13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2
MD5 hash:
741ae9506bfb256797b80215497abbd8
SHA1 hash:
b637b9f383276cf58a6d0c2190213e6df681821f
Link:
https://www.unpac.me/results/18879328-574c-4d1d-8af3-d8cc0de86d25/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2

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
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
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.

Web download

RemcosRAT

Executable exe 13bde9ef7157ee47c6906c69e6fe0d810b04ce60b8b4f2e74743da33e526dbf2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1025158/
  
Delivery method
Distributed via web download

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