MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a
SHA3-384 hash: 1b1cefbc2cbf6b1d7136ea716ad35be5514859ee37a8127103e4e64f18c106f8657a921633bb5c1adba2d0daf2f42f87
SHA1 hash: 9a630cbe315df04d07f06996f2a1fb264302b5c6
MD5 hash: 1d506172226f6ac5b66b2bb8783bed96
humanhash: oven-lactose-october-colorado
File name:PO 20054.pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'280'512 bytes
First seen:2022-10-15 09:17:53 UTC
Last seen:2022-10-18 07:26:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:QrnC82Hh0ZQUMPgYqI/y8pq1uZ/yU3cz4uB:yC8EhiQUMPgYpnpoCyrX
Threatray 3'379 similar samples on MalwareBazaar
TLSH T16355AD7A12D64507E4293275C893D2F32AFBAD207062D1C79AD76F6FBC411BFA102396
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
408
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/320571/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1623.16333.7150.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Creating a file
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/634a7ace1b976e20e2c27f36/reports/64af0b04-5688-4ced-b223-589ec9b18537/overview
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:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/04a01938-29e7-4c67-aff6-e7ebca3c1420
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1091170
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 723778 Sample: PO 20054.pdf.exe Startdate: 15/10/2022 Architecture: WINDOWS Score: 100 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 Sigma detected: Scheduled temp file as task from temp location 2->59 61 12 other signatures 2->61 7 PO 20054.pdf.exe 7 2->7         started        12 cOZbaIxUHFW.exe 5 2->12         started        process3 dnsIp4 47 192.168.2.1 unknown unknown 7->47 37 C:\Users\user\AppData\...\cOZbaIxUHFW.exe, PE32 7->37 dropped 39 C:\Users\...\cOZbaIxUHFW.exe:Zone.Identifier, ASCII 7->39 dropped 41 C:\Users\user\AppData\Local\...\tmp83D9.tmp, XML 7->41 dropped 43 C:\Users\user\...\PO 20054.pdf.exe.log, ASCII 7->43 dropped 63 Adds a directory exclusion to Windows Defender 7->63 14 PO 20054.pdf.exe 2 16 7->14         started        19 powershell.exe 19 7->19         started        21 schtasks.exe 1 7->21         started        23 PO 20054.pdf.exe 7->23         started        65 Multi AV Scanner detection for dropped file 12->65 67 Machine Learning detection for dropped file 12->67 69 Injects a PE file into a foreign processes 12->69 25 schtasks.exe 1 12->25         started        27 cOZbaIxUHFW.exe 12->27         started        29 cOZbaIxUHFW.exe 12->29         started        file5 signatures6 process7 dnsIp8 49 185.136.170.229, 1960, 49712 VELIANET-ASvelianetInternetdiensteGmbHDE United Kingdom 14->49 51 geoplugin.net 178.237.33.50, 49713, 80 ATOM86-ASATOM86NL Netherlands 14->51 45 C:\ProgramData\remcos\logs.dat, data 14->45 dropped 53 Installs a global keyboard hook 14->53 31 conhost.exe 19->31         started        33 conhost.exe 21->33         started        35 conhost.exe 25->35         started        file9 signatures10 process11
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2022-10-13 16:43:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6c6zyqlahhsqydzyrk363ht3rvc7tutqzsb6rcy5xzl3r536zna._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21fbd43b028f4b111d525516e9fae0eadc1bcdf17f0295c64df28c667b3e07f6
RemcosRAT
2f152a8da309e2878e0414477e27d6d041237de92c90f15e371c26ed9344cc40
RemcosRAT
3309420da4cc8e91be71bd96a482fd2b544e2b1dd0d5a8e075b3cfe9bac1957f
RemcosRAT
440cf58dc6b8e4724c669e148969ecd8d424c9bf6dbdec6e358fdca7e72b3734
RemcosRAT
5a5d9cee5d7f4429558ef526249cc70078b3c2c89a3a87e2181449aca3c82c14
RemcosRAT
825624416b00297bbc9a9544a99b2f5d32093307933009625d386b88c413405c
RemcosRAT
90aad12150ce71c784cb7e091100e33bd37c4572d7a93b88fb9d6d08f96200a0
RemcosRAT
bf9b6173d2867c122cabed33c022cc71fa6a5bdf9be0fd09af88a9dde5ccac36
RemcosRAT
+ 3'369 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost kaptain rat
Link:
https://tria.ge/reports/221015-k9lsgafdfn/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
185.136.170.229:1960
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2c436fc0-364a-4cea-9284-ba4e0921198f
Unpacked files
SH256 hash:
9a2e448055eb88b824442ad8d1d6506ce9be2dad3a2d519b89cd11c28f93731f
MD5 hash:
69838bfbfdc85f19c6d7d69fc6855912
SHA1 hash:
d2c3e89b3f705d8e04d5880260945d9d18ddab54
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
Parent samples :
a82398e3798998a98573b4255a7e2c5a6db73ffd724dbc463e293026815f206e
cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a
f5faaf973c1d19ec62c271762f887d0a419e5d17ffc8a385e13728867aa1620a
02232dd152bdb1747266d1e0970e37b243dcf2c75abedcab3ded8e04ee2868f0
SH256 hash:
af7ac1171b44c9a949ad80bfaf05095048d0b74cfb527f66479e22f47d340110
MD5 hash:
f696dc0e00cb8f70799ac3fcaa5f9f6a
SHA1 hash:
cde2283de5b89639ea52f6388feef8f77efc63ce
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
SH256 hash:
30e7762068c68093f5a113b9226c8fa507a7c1c0cb299ce6080e37c8d841019b
MD5 hash:
bbfe7123ed094ee7eae014723d910bc4
SHA1 hash:
98dc398b6dc45f0eeffbc21c3f0e050e2e7f57fa
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
SH256 hash:
cf376602b343cf8fdabd426ef58f14863e41d2429444fe3bf150be5b9b56cc43
MD5 hash:
c33487edec22789135c29925dc338c49
SHA1 hash:
3e01f3bb3008830fa153d3d1910dce5c3ae08291
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
SH256 hash:
cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a
MD5 hash:
1d506172226f6ac5b66b2bb8783bed96
SHA1 hash:
9a630cbe315df04d07f06996f2a1fb264302b5c6
Link:
https://www.unpac.me/results/57cfd081-7185-432d-81e1-ffeccfd69221/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cf85ece20b01/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/cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe cf85ece20b01cf286079c455bf6cf3dc6a2fce9386641f4458edf2bdc7bbf65a

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/320571/

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