MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
SHA3-384 hash: fffde34035f2d9b9f1d6abeb294fb8889b6a9166b1025176cab40353c78d60642f994f39719e274fb02280f06d27d04f
SHA1 hash: e5583bc3e48b0f0f93173518d493e27f28268875
MD5 hash: d114a69f8415cae2e4bd1595e7fb4790
humanhash: oscar-tango-burger-july
File name:PO 456123489.EXE
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:605'184 bytes
First seen:2020-11-02 10:37:38 UTC
Last seen:2020-11-08 14:08:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:AYozZG2CAzR8Y0L/MPCgYbJQYzVa0JXwcarTG6R3zhj3+JXnK:7qiA98Y0LMPjOz/qFFSXnK
TLSH 8DD484F440EF10A2F25F852936ADBE9401B2B1C7DBDA5E08137DE5311BBDA633A0564D
Reporter cocaman
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
4
# of downloads :
491
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/81787/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/518087
Signature
.NET source code contains very large array initializations
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
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)
Uses IRC for communication with a C&C
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 308145 Sample: PO 456123489.EXE Startdate: 02/11/2020 Architecture: WINDOWS Score: 100 31 Malicious sample detected (through community Yara rule) 2->31 33 Multi AV Scanner detection for dropped file 2->33 35 Multi AV Scanner detection for submitted file 2->35 37 12 other signatures 2->37 6 PO 456123489.EXE 1 4 2->6         started        10 vlc.exe 1 2->10         started        12 vlc.exe 2->12         started        process3 file4 21 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 6->21 dropped 23 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 6->23 dropped 25 C:\Users\user\...\PO 456123489.EXE.log, ASCII 6->25 dropped 39 Injects a PE file into a foreign processes 6->39 14 PO 456123489.EXE 2 6->14         started        27 C:\Users\user\AppData\Local\...\vlc.exe.log, ASCII 10->27 dropped 17 vlc.exe 10->17         started        19 vlc.exe 12->19         started        signatures5 process6 dnsIp7 29 185.19.85.149, 49725, 6667 DATAWIRE-ASCH Switzerland 14->29
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44/
Threat name:
ByteCode-MSIL.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2020-11-02 08:35:58 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
21 of 27 (77.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cgywxjzt6l2pccwfqaq65sxvm2cvdjz6finm7luzorofbp6mxnca._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201102-m42bb6ejbx/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Unpacked files
SH256 hash:
ff34f92bd710c82c95205953752cbe4d9aabfdb9360141d7008dbb53d10e530f
MD5 hash:
56752ad55b51a91e0d58621c1d8edde4
SHA1 hash:
05eea335d8847406eb432f8941f81285e5d18149
Link:
https://www.unpac.me/results/28cc5c43-39a2-4099-b5e4-907d1e07b6aa/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/28cc5c43-39a2-4099-b5e4-907d1e07b6aa/
SH256 hash:
4cb1d529e621c510c72c6415f4c34bb90c930a51107202dbbf47b5c451eefa83
MD5 hash:
6ea824d73628542047d17d8a72c2cf79
SHA1 hash:
b946efe7e25496bba2f70095e5ef1423d381097c
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/28cc5c43-39a2-4099-b5e4-907d1e07b6aa/
Parent samples :
f9d00bb8b35a6419e1b75194576b12ae1c6259e26d2fe90f328f12e428d9924e
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
70467031f57eed3b73ab89216e2058eff7c0db5b7bace38f6afa55cad1282b9a
68c3bc52831c9df86039c85e4e896413bb7ccba3a85827a3ac32909c68e582dd
0fd20c59637e0e49883692ee2522664944fde54bf4b80c84648d2c7acf728e5c
SH256 hash:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
MD5 hash:
d114a69f8415cae2e4bd1595e7fb4790
SHA1 hash:
e5583bc3e48b0f0f93173518d493e27f28268875
Link:
https://www.unpac.me/results/28cc5c43-39a2-4099-b5e4-907d1e07b6aa/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/11b16ba733f2/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/11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44

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: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: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.

Malspam

RemcosRAT

img c8ea3ac2420b65b01368ea060c12b62215821acc99d83af28491e7645d33ed2d

RemcosRAT

Executable exe 11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c8ea3ac2420b65b01368ea060c12b62215821acc99d83af28491e7645d33ed2d
Cape
Cape
https://www.capesandbox.com/analysis/81787/

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