MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930
SHA3-384 hash: 657830e2aa3537f66c45be7f7d3982c512c8a36b1a464431a93e38d98f1f3b6ad15b74a55174e6424b7ff96224ed6f0b
SHA1 hash: 2a44f499c107f0e259f4bb483391542d20faaec7
MD5 hash: 68312e4fef6955b4e05a93fa1dc0821c
humanhash: winner-three-robin-michigan
File name:68312e4fef6955b4e05a93fa1dc0821c.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:701'440 bytes
First seen:2021-03-20 08:21:41 UTC
Last seen:2021-03-20 09:31:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:sPExUagA4hdA8WAtpKT/yfvnLadWNRPvqIqigo6eX5RX952xYq:ksg3A6pKTqHZNAILgDeXzX955q
Threatray 2'112 similar samples on MalwareBazaar
TLSH A2E4E0606A377FE4E0BA233604F5154347FEF81A8352CABA2CB560CD18A2F594673637
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
hsyuwbvxczbansmloiujdhsbnbcgywqauaghxvz.ydns.eu

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Signed Contract_2021785483.xlsx
Verdict:
Malicious activity
Analysis date:
2021-03-20 07:46:00 UTC
Tags:
encrypted exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/c6609a4b-1c59-41b0-88bb-628eeb442dbb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/125765/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.580.20802.32519.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/345c57f6-34de-44ae-b6e2-736883d63e71
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/646798
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
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 372367 Sample: KLGr77f9Ne.exe Startdate: 20/03/2021 Architecture: WINDOWS Score: 100 49 hsyuwbvxczbansmloiujdhsbnbcgywqauaghxvz.ydns.eu 2->49 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Multi AV Scanner detection for submitted file 2->57 59 7 other signatures 2->59 11 KLGr77f9Ne.exe 3 2->11         started        15 win.exe 2 2->15         started        17 win.exe 2 2->17         started        signatures3 process4 file5 45 C:\Users\user\AppData\...\KLGr77f9Ne.exe.log, ASCII 11->45 dropped 61 Contains functionality to steal Chrome passwords or cookies 11->61 63 Contains functionality to capture and log keystrokes 11->63 65 Contains functionality to inject code into remote processes 11->65 67 Contains functionality to steal Firefox passwords or cookies 11->67 19 KLGr77f9Ne.exe 4 4 11->19         started        69 Injects a PE file into a foreign processes 15->69 22 win.exe 15->22         started        24 win.exe 17->24         started        signatures6 process7 file8 41 C:\Users\user\AppData\Roaming\win.exe, PE32 19->41 dropped 43 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 19->43 dropped 26 wscript.exe 1 19->26         started        process9 process10 28 cmd.exe 1 26->28         started        process11 30 win.exe 3 28->30         started        34 conhost.exe 28->34         started        file12 47 C:\Users\user\AppData\Local\...\win.exe.log, ASCII 30->47 dropped 71 Multi AV Scanner detection for dropped file 30->71 73 Machine Learning detection for dropped file 30->73 75 Contains functionality to steal Chrome passwords or cookies 30->75 77 3 other signatures 30->77 36 win.exe 2 1 30->36         started        39 win.exe 30->39         started        signatures13 process14 dnsIp15 51 hsyuwbvxczbansmloiujdhsbnbcgywqauaghxvz.ydns.eu 188.72.115.54, 2009 M247GB Netherlands 36->51
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930/
Threat name:
ByteCode-MSIL.Trojan.FormBookLoader
Create hunting rule
Status:
Malicious
First seen:
2021-03-19 21:09:33 UTC
AV detection:
25 of 47 (53.19%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=thneg4sl76ikbm3zlflutmsqwc7au4hxfeena6laejpppqwzjeya._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 2'102 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210320-76nrm27nj6/
Behaviour
Modifies registry class
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
hsyuwbvxczbansmloiujdhsbnbcgywqauaghxvz.ydns.eu:2009
Unpacked files
SH256 hash:
2b43013edb5706a946f4e523a1a219b31fe2a7e05c48884c048882b3c1327655
MD5 hash:
b7159eb14fe565d4e233604b629bbd8a
SHA1 hash:
64f82c67e6c7cbc078141162a49bffcee3d9ebb9
Link:
https://www.unpac.me/results/48b1020e-30a3-482c-ab0b-007a8247080c/
SH256 hash:
99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930
MD5 hash:
68312e4fef6955b4e05a93fa1dc0821c
SHA1 hash:
2a44f499c107f0e259f4bb483391542d20faaec7
Link:
https://www.unpac.me/results/48b1020e-30a3-482c-ab0b-007a8247080c/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930

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: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 99da43724bff90a0b379595749b250b0be0a70f72908d07960225ef7c2d94930

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1078875/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/125765/

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