MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32
SHA3-384 hash: ac536deb84f3185547b4374f592b05a67b5789f156331e6fd59ec1047cb9e9933d4364a5b47bfcc2ccce05974fa6c01a
SHA1 hash: 73f66aee4f6b213d0dc891748d67a847cceebd22
MD5 hash: 3d8cb8645d76f340d3b6db5a177375be
humanhash: diet-arizona-bulldog-burger
File name:3d8cb8645d76f340d3b6db5a177375be
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'336'832 bytes
First seen:2022-03-14 20:14:16 UTC
Last seen:2022-04-20 10:24:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:Mb1UQMfcyIBRvbOlxbRduPqbZZOvyoLshSMWBBxYO:WaxIBRvbObbruPiZNoLshVlO
TLSH T15455E1E0FE0892BDDC116536C4A84C701DB56F5A34297F0AA16F31DD497BACF49A2C2E
File icon (PE):PE icon
dhash icon ccc8c4c4d0c0d4d4 (1 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
194
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
AWB No. 776080500829 ERIC MARTINDALE CONSIGNEE ISN'T AVAILABLE.msg
Verdict:
Malicious activity
Analysis date:
2022-03-14 16:18:32 UTC
Tags:
encrypted opendir trojan exploit CVE-2017-11882 loader rat remcos keylogger
Link:
https://app.any.run/tasks/7148d425-c26a-4f8a-bd26-21000d93e3ae

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/250425/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/622fa24b0cd58dbd9298ed69/reports/9a962999-1ac8-4fa7-90aa-92eed665fa13/overview
Result
Verdict:
UNKNOWN
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/50d2628a-bedf-47cc-a637-b98f252d85a7
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956524
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected unpacking (creates a PE file in dynamic memory)
Found malware configuration
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: Suspicious Add Scheduled Task From User AppData Temp
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
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: 589007 Sample: Nk8nIOe7Av Startdate: 14/03/2022 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for dropped file 2->44 46 9 other signatures 2->46 7 Nk8nIOe7Av.exe 7 2->7         started        process3 file4 30 C:\Users\user\AppData\Roaming\kJIwcZIi.exe, PE32 7->30 dropped 32 C:\Users\...\kJIwcZIi.exe:Zone.Identifier, ASCII 7->32 dropped 34 C:\Users\user\AppData\Local\...\tmpB5FC.tmp, XML 7->34 dropped 36 C:\Users\user\AppData\...36k8nIOe7Av.exe.log, ASCII 7->36 dropped 52 Detected unpacking (creates a PE file in dynamic memory) 7->52 54 Tries to steal Mail credentials (via file registry) 7->54 56 Contains functionality to steal Chrome passwords or cookies 7->56 58 5 other signatures 7->58 11 Nk8nIOe7Av.exe 2 2 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 dnsIp7 38 marcobalassoneets.ddns.net 91.90.121.57, 49776, 49777, 9794 DPNETBucharestInsulei4RO Romania 11->38 60 Installs a global keyboard hook 11->60 62 Injects a PE file into a foreign processes 11->62 19 Nk8nIOe7Av.exe 1 11->19         started        22 Nk8nIOe7Av.exe 1 11->22         started        24 Nk8nIOe7Av.exe 11->24         started        26 conhost.exe 15->26         started        28 conhost.exe 17->28         started        signatures8 process9 signatures10 48 Tries to steal Instant Messenger accounts or passwords 19->48 50 Tries to steal Mail credentials (via file / registry access) 19->50
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-14 18:11:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6s4wygufhjv5zgubcui4im4cmlukgmyr2ioouvuqy5g2uhjnvyza._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:engine prof rat spyware stealer
Link:
https://tria.ge/reports/220314-y1kqpseacq/
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
Reads user/profile data of web browsers
.NET Reactor proctector
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
marcobalassoneets.ddns.net:9794
Unpacked files
SH256 hash:
c326f1c11925547d0a40472b411885b9d1118e7132843a45dbbaaee0e2478a81
MD5 hash:
00c36d7679e3c9c0d4a248ed35194a57
SHA1 hash:
01283522938bc2406c11655db15d9d41c0f0a9ac
Link:
https://www.unpac.me/results/628ef535-7b6a-4a72-b876-e25091638ce1/
SH256 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/628ef535-7b6a-4a72-b876-e25091638ce1/
SH256 hash:
f35d48097c476aa535ec20b882958c07ddf3636776afeb82363d10e823084349
MD5 hash:
344e71d8c3d8f10b52bc06de49f15bcf
SHA1 hash:
88ac6ad93a1e3179353e5d3886ce5c212139b570
Link:
https://www.unpac.me/results/628ef535-7b6a-4a72-b876-e25091638ce1/
SH256 hash:
1e656aaefbb70e3027c21801034507085df9df3ec8bf501f4da721e8b36d03be
MD5 hash:
fd2c8943b71cb96780b7d9ed9ff9fb35
SHA1 hash:
c62a5b1062b386b1e923bb9d7fb3126ddc0d22f8
Link:
https://www.unpac.me/results/628ef535-7b6a-4a72-b876-e25091638ce1/
SH256 hash:
f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32
MD5 hash:
3d8cb8645d76f340d3b6db5a177375be
SHA1 hash:
73f66aee4f6b213d0dc891748d67a847cceebd22
Link:
https://www.unpac.me/results/628ef535-7b6a-4a72-b876-e25091638ce1/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/f4b96c1a853a/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/f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32

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.

Web download

RemcosRAT

Executable exe f4b96c1a853a6bdc9a811511c4338262e8a33311d21cea5690c74daa1d2dae32

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/250425/
  
URLhaus
https://urlhaus.abuse.ch/url/2096941/

Comments


Avatar
zbet commented on 2022-03-14 20:14:17 UTC

url : hxxp://107.174.138.202/56/vbc.exe