MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc
SHA3-384 hash: 622f9b4889db7ce8a03a8804dfe8a7b361f38b579ba96cfe18671c65913fe899e658e0ad27e711a3ea407ff60efab04f
SHA1 hash: 410df93e347a277922528daf4aacd09dc301dd59
MD5 hash: 5daa7319b2aaa040d63ba9075ce08d72
humanhash: maryland-august-golf-social
File name:z43FAC98656700.CMD
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'664'000 bytes
First seen:2024-01-13 12:34:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 948cc502fe9226992dce9417f952fce3 (1'182 x CredentialFlusher, 446 x Formbook, 231 x AgentTesla)
ssdeep 49152:oTvC/MTQYxsWR7aKHgqKs31lHJ7MLdNXAcvYVzl04s8Z:gjTQYxsWRNHgqKs31lHJ7MBlxYzeI
TLSH T1D375BF0333808065FFAB91B35B17E25067BD997A8117E61E13D82A76BEF05B1063E763
TrID 68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.5% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b2b094ce8c96f66e (2 x AgentTesla, 1 x RemcosRAT, 1 x GuLoader)
Reporter FXOLabs
Tags:cmd exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
332
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
https://bazaar.abuse.ch/download/fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc/
Verdict:
Malicious activity
Analysis date:
2024-01-13 14:08:46 UTC
Tags:
neoreklami adware
Link:
https://app.any.run/tasks/5a56001c-d9a7-4607-b663-f222e32ae614

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/470725/
Detection(s):
SecuriteInfo.com.Trojan.Generic.33203615.28472.17882.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
autoit bladabindi coinminer control greyware keylogger lolbin masquerade packed remcos shell32 threat
Link:
https://www.filescan.io/uploads/65a283a31bf798554ab0f585/reports/6007664a-7ea0-4d43-9af7-7e20dfde7950/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc
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.
Malware family:
LockBit Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a31b0c0f-ec8f-4321-96ba-06cb54bebad0
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1374252
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
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
Delayed program exit found
Detected unpacking (creates a PE file in dynamic memory)
Downloads suspicious files via Chrome
Drops VBS files to the startup folder
Found API chain indicative of sandbox detection
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1374252 Sample: z43FAC98656700.CMD.exe Startdate: 13/01/2024 Architecture: WINDOWS Score: 100 96 www.msn.com 2->96 98 sni1gl.wpc.nucdn.net 2->98 100 8 other IPs or domains 2->100 124 Snort IDS alert for network traffic 2->124 126 Multi AV Scanner detection for domain / URL 2->126 128 Found malware configuration 2->128 130 14 other signatures 2->130 15 z43FAC98656700.CMD.exe 6 2->15         started        19 remcos.exe 2->19         started        22 wscript.exe 2->22         started        24 3 other processes 2->24 signatures3 process4 dnsIp5 80 C:\Users\user\AppData\...\alarmingness.exe, PE32 15->80 dropped 114 Binary is likely a compiled AutoIt script file 15->114 116 Found API chain indicative of sandbox detection 15->116 26 alarmingness.exe 2 6 15->26         started        102 107.175.229.139, 49753, 49764, 8087 AS-COLOCROSSINGUS United States 19->102 104 geoplugin.net 178.237.33.50, 49765, 80 ATOM86-ASATOM86NL Netherlands 19->104 82 C:\ProgramData\Remcos\logs.dat, data 19->82 dropped 118 Maps a DLL or memory area into another process 19->118 30 remcos.exe 19->30         started        32 remcos.exe 19->32         started        34 remcos.exe 19->34         started        120 Windows Scripting host queries suspicious COM object (likely to drop second stage) 22->120 36 alarmingness.exe 22->36         started        106 239.255.255.250 unknown Reserved 24->106 84 C:\Users\user\AppData\...\content_new.js, Unicode 24->84 dropped 86 C:\Users\user\AppData\Local\...\content.js, Unicode 24->86 dropped 88 C:\Users\user\...\page_embed_script.js, ASCII 24->88 dropped 90 C:\Users\user\...\eventpage_bin_prod.js, ASCII 24->90 dropped 38 remcos.exe 24->38         started        40 msedge.exe 24->40         started        43 msedge.exe 24->43         started        file6 signatures7 process8 dnsIp9 76 C:\ProgramData\Remcos\remcos.exe, PE32 26->76 dropped 78 C:\Users\user\AppData\...\alarmingness.vbs, data 26->78 dropped 134 Contains functionality to bypass UAC (CMSTPLUA) 26->134 136 Binary is likely a compiled AutoIt script file 26->136 138 Contains functionalty to change the wallpaper 26->138 146 7 other signatures 26->146 45 remcos.exe 2 3 26->45         started        140 Tries to steal Instant Messenger accounts or passwords 30->140 142 Tries to steal Mail credentials (via file / registry access) 30->142 144 Tries to harvest and steal browser information (history, passwords, etc) 32->144 48 alarmingness.exe 36->48         started        108 googlehosted.l.googleusercontent.com 172.253.122.132, 443, 49725 GOOGLEUS United States 40->108 110 clients.l.google.com 172.253.62.113, 443, 49720 GOOGLEUS United States 40->110 112 7 other IPs or domains 40->112 file10 signatures11 process12 signatures13 148 Antivirus detection for dropped file 45->148 150 Detected unpacking (creates a PE file in dynamic memory) 45->150 152 Binary is likely a compiled AutoIt script file 45->152 154 3 other signatures 45->154 50 iexplore.exe 2 45->50         started        53 alarmingness.exe 48->53         started        process14 signatures15 55 iexplore.exe 50->55         started        122 Binary is likely a compiled AutoIt script file 53->122 57 alarmingness.exe 53->57         started        process16 signatures17 60 iexplore.exe 68 100 55->60         started        132 Binary is likely a compiled AutoIt script file 57->132 62 alarmingness.exe 57->62         started        process18 signatures19 65 iexplore.exe 6 48 60->65         started        156 Binary is likely a compiled AutoIt script file 62->156 process20 dnsIp21 92 code.jquery.com 151.101.66.137, 443, 49751, 49752 FASTLYUS United States 65->92 94 sb.scorecardresearch.com 3.162.112.60, 443, 49741, 49742 AMAZON-02US United States 65->94 68 ie_to_edge_stub.exe 1 65->68         started        70 ssvagent.exe 501 65->70         started        process22 process23 72 msedge.exe 10 68->72         started        process24 74 msedge.exe 72->74         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-01-12 12:52:27 UTC
File Type:
PE (Exe)
Extracted files:
35
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7x43rkn3jnodybjjbqtipirlaxb7htsbqaazj76avfef7wwta66a._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240113-psbndsachq/
Behaviour
Suspicious use of WriteProcessMemory
AutoIT Executable
Drops startup file
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
95dfdb588c7018babd55642c48f6bed1c281cecccbd522dd40b8bea663686f30
MD5 hash:
8d3c6a404a9b6526d082de3e0370e10e
SHA1 hash:
bef3f3c4d9b076a60bdb047f5b8439662691b1d3
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/973d1f1a-ac46-437a-8526-f09916e0f7f2/
Parent samples :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 hash:
fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc
MD5 hash:
5daa7319b2aaa040d63ba9075ce08d72
SHA1 hash:
410df93e347a277922528daf4aacd09dc301dd59
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/973d1f1a-ac46-437a-8526-f09916e0f7f2/
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/fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)

File information

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

Malspam

RemcosRAT

Executable exe fdf9b8a9bb4b5c3c05290c2687a22b05c3f3ce41800194ffc0a9485fdad307bc

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/470725/

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