MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363. 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: 8


Intelligence 8 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363
SHA3-384 hash: c56d04a24ec074aeb6e995e4b593d17c93717c21d094b60d640be2a313f739e864cfa3636434c328d3e76f30358736f5
SHA1 hash: a51bbb742b9198558e7908171f77248845a65496
MD5 hash: fb8d2c6d2a64e318bf0665acd12ace8d
humanhash: georgia-island-harry-jupiter
File name:62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'035'056 bytes
First seen:2020-11-11 11:41:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 49152:fnBW20dt2LYad7cwj644Mh+ZkldoPK8YaLDNcu:JWrt2LYwjE2cPK8X
TLSH 73E5D0427399C0F6FF5662B39B1AB646677C7D3141B3411F23982E68BE711B2023E663
Reporter seifreed
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
65
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Downloader.LokiBot-6962970-0
Create hunting rule

Win.Malware.Autoit-6985962-0
Create hunting rule

Win.Packed.Autoit-7362116-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file in the %AppData% subdirectories
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
DNS request
Sending a custom TCP request
Deleting a recently created file
Running batch commands
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Moving of the original file
Setting a global event handler for the keyboard
Enabling autorun by creating a file
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 WebMonitor RAT
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/531804
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
AutoIt script contains suspicious strings
Binary is likely a compiled AutoIt script file
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected WebMonitor RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 315002 Sample: LWwoiTLRjW Startdate: 12/11/2020 Architecture: WINDOWS Score: 100 95 daya4659.ddns.net 2->95 97 sdns.se 2->97 99 google.se 2->99 113 Multi AV Scanner detection for domain / URL 2->113 115 Malicious sample detected (through community Yara rule) 2->115 117 Antivirus / Scanner detection for submitted sample 2->117 119 12 other signatures 2->119 14 LWwoiTLRjW.exe 3 5 2->14         started        18 sfc.exe 2->18         started        20 driverquery.exe 2->20         started        22 3 other processes 2->22 signatures3 process4 file5 91 C:\Users\user\AppData\...\driverquery.exe, PE32 14->91 dropped 151 Binary is likely a compiled AutoIt script file 14->151 24 remcos_agent_Protected.exe 3 14->24         started        28 LWwoiTLRjW.exe 1 12 14->28         started        31 AcroRd32.exe 15 37 14->31         started        33 schtasks.exe 1 14->33         started        153 Antivirus detection for dropped file 18->153 155 Injects a PE file into a foreign processes 18->155 93 C:\Users\user\...\remcos_agent_Protected.exe, PE32 20->93 dropped 35 remcos.exe 22->35         started        37 schtasks.exe 22->37         started        signatures6 process7 dnsIp8 87 C:\Users\user\AppData\Roaming\...\sfc.exe, PE32 24->87 dropped 131 Antivirus detection for dropped file 24->131 133 Multi AV Scanner detection for dropped file 24->133 135 Contains functionalty to change the wallpaper 24->135 141 5 other signatures 24->141 39 remcos_agent_Protected.exe 4 4 24->39         started        43 schtasks.exe 1 24->43         started        105 daya4659.ddns.net 28->105 107 google.se 172.217.168.227, 443, 49714, 49715 GOOGLEUS United States 28->107 109 sdns.se 28->109 137 Creates autostart registry keys with suspicious names 28->137 139 Creates multiple autostart registry keys 28->139 45 RdrCEF.exe 31->45         started        48 AcroRd32.exe 8 6 31->48         started        50 conhost.exe 33->50         started        file9 signatures10 process11 dnsIp12 85 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 39->85 dropped 129 Creates multiple autostart registry keys 39->129 52 wscript.exe 1 39->52         started        54 conhost.exe 43->54         started        111 192.168.2.1 unknown unknown 45->111 56 RdrCEF.exe 45->56         started        59 RdrCEF.exe 45->59         started        61 RdrCEF.exe 45->61         started        63 RdrCEF.exe 45->63         started        file13 signatures14 process15 dnsIp16 65 cmd.exe 52->65         started        101 80.0.0.0 NTLGB United Kingdom 56->101 process17 process18 67 remcos.exe 65->67         started        70 conhost.exe 65->70         started        signatures19 121 Antivirus detection for dropped file 67->121 123 Multi AV Scanner detection for dropped file 67->123 125 Detected unpacking (creates a PE file in dynamic memory) 67->125 127 Injects a PE file into a foreign processes 67->127 72 remcos.exe 67->72         started        77 schtasks.exe 67->77         started        process20 dnsIp21 103 daya4659.ddns.net 72->103 89 C:\Users\user\AppData\Roaming\...\logs.dat, data 72->89 dropped 143 Tries to harvest and steal browser information (history, passwords, etc) 72->143 145 Writes to foreign memory regions 72->145 147 Allocates memory in foreign processes 72->147 149 Injects a PE file into a foreign processes 72->149 79 svchost.exe 72->79         started        81 conhost.exe 77->81         started        file22 signatures23 process24 process25 83 WerFault.exe 79->83         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-11 11:48:39 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mkrfwmicpwtscc3mzo6afbuppsivxpi2wqelgoedwk44nz4xgnrq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat upx
Link:
https://tria.ge/reports/201111-892bzr1f1n/
Behaviour
Creates scheduled task(s)
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
UPX packed file
Remcos
Malware Config
C2 Extraction:
daya4659.ddns.net:8282
Unpacked files
SH256 hash:
62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363
MD5 hash:
fb8d2c6d2a64e318bf0665acd12ace8d
SHA1 hash:
a51bbb742b9198558e7908171f77248845a65496
Link:
https://www.unpac.me/results/c5c60498-bde3-4071-8d55-2e6b9f989dbc/
SH256 hash:
0954fe3152ff66dd9dd26dfcb13edf21915e51dec6993600aff97b7a768dc088
MD5 hash:
c9d17b356e7c463f2b4f57e0f98edb1e
SHA1 hash:
16f75139e11c1d673251c8367fea15f44932f881
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/c5c60498-bde3-4071-8d55-2e6b9f989dbc/
Parent samples :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 hash:
e05c3642bb7e56de73b5bc1dadc3ca91f698434c8c055650b4fbdd8e2842485b
MD5 hash:
f1260cb5d0d66420dcdfd431dbd1ed29
SHA1 hash:
5272804135182a98a2efdd3b51d15b3fbc802a62
Detections:
win_webmonitor_w0
Create hunting rule
Link:
https://www.unpac.me/results/c5c60498-bde3-4071-8d55-2e6b9f989dbc/
Parent samples :
62a25b31027da7210b6ccbbc02868f7c915bbd1ab408b33883b2b9c6e7973363
880bac27fbf9e47802a289cd4182b0594d18c0330a7db948bfe9008368295aba
aea42dd44008f2fe434150f59e0cef40b83578cf1ee27a4fd1f6404d44b37bd2
3b41f447509a77d0c3155f23928457be0f71701c490af674f03da959e984ac01
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
Create hunting rule
Author:abuse.ch
Rule name:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).
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:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
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.

  
Delivery method
Other

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