MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa3661c6facf433bf9b20a1d00433c57ba8a8beb8479716987a787d56a82680c. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
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SHA256 hash: aa3661c6facf433bf9b20a1d00433c57ba8a8beb8479716987a787d56a82680c
SHA3-384 hash: 0ad38287f631eb28a9392d02d612ca2cf71b192d8e985509ed5877a975ce89ffa60548e6aba3dd028ff0381896ba88ad
SHA1 hash: 8b0cf34574b15bebcd3da0f066250eca7161ad68
MD5 hash: f4d8a5e84dbc3621d22194d10ac18afc
humanhash: lamp-lactose-quebec-zebra
File name:SecuriteInfo.com.Trojan.PackedNET.1626.18275.14478
Download: download sample
Signature RemcosRAT
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File size:12'288 bytes
First seen:2022-10-17 14:27:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 192:k2CwR/t4IFOX7XaZS9iDA1DQp+AA7g+4OW4/4Ic6nGezWAnzWI:gICVYD8DC+k+IWTWAnzW
TLSH T1F1422B0AE3A50677F9E14AB0991657C4273D6B333C23D34FFD9891993816E088B90FB1
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 48d4f4f0f0f0d8c0 (37 x RedLineStealer, 18 x AgentTesla, 9 x SnakeKeylogger)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/321030/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1626.18275.14478.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Creating a window
Running batch commands
Unauthorized injection to a recently created process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/634d66387f72336a8d627ecd/reports/3fd37e2b-efe8-4e08-b634-a65532ff95e6/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:
Generic Malware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0da64b26-8b02-4931-8fe2-c7fbec0c068c
Result
Threat name:
Remcos, FormBook
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Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1091971
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates an undocumented autostart registry key
Delayed program exit found
Detected unpacking (changes PE section rights)
Encrypted powershell cmdline option found
Installs a global keyboard hook
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Snort IDS alert for network traffic
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)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses dynamic DNS services
Uses the Telegram API (likely for C&C communication)
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 724593 Sample: SecuriteInfo.com.Trojan.Pac... Startdate: 17/10/2022 Architecture: WINDOWS Score: 100 73 Snort IDS alert for network traffic 2->73 75 Multi AV Scanner detection for domain / URL 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 14 other signatures 2->79 10 SecuriteInfo.com.Trojan.PackedNET.1626.18275.14478.exe 16 7 2->10         started        15 chrome.exe 14 2 2->15         started        17 chrome.exe 2->17         started        process3 dnsIp4 69 api.telegram.org 149.154.167.220, 443, 49701 TELEGRAMRU United Kingdom 10->69 71 www.uplooder.net 144.76.120.25, 443, 49697, 49705 HETZNER-ASDE Germany 10->71 55 C:\Users\user\AppData\Local\chrome.exe, PE32 10->55 dropped 57 C:\Users\user\...\Cdrfivdayunewnvpn.exe, PE32 10->57 dropped 59 C:\Users\user\...\chrome.exe:Zone.Identifier, ASCII 10->59 dropped 61 SecuriteInfo.com.T...18275.14478.exe.log, ASCII 10->61 dropped 103 Encrypted powershell cmdline option found 10->103 19 Cdrfivdayunewnvpn.exe 4 4 10->19         started        23 powershell.exe 16 10->23         started        25 SecuriteInfo.com.Trojan.PackedNET.1626.18275.14478.exe 10->25         started        105 Multi AV Scanner detection for dropped file 15->105 107 Machine Learning detection for dropped file 15->107 file5 signatures6 process7 file8 51 C:\ProgramData\work\FILE.EXE, PE32 19->51 dropped 53 C:\Users\user\AppData\Local\...\install.vbs, data 19->53 dropped 89 Antivirus detection for dropped file 19->89 91 Multi AV Scanner detection for dropped file 19->91 93 Creates an undocumented autostart registry key 19->93 95 5 other signatures 19->95 27 wscript.exe 1 19->27         started        29 conhost.exe 23->29         started        signatures9 process10 process11 31 cmd.exe 1 27->31         started        process12 33 FILE.EXE 2 18 31->33         started        38 conhost.exe 31->38         started        dnsIp13 63 remcapi.duckdns.org 79.134.225.75, 2028, 49702, 49704 FINK-TELECOM-SERVICESCH Switzerland 33->63 65 geoplugin.net 178.237.33.50, 49703, 80 ATOM86-ASATOM86NL Netherlands 33->65 67 192.168.2.1 unknown unknown 33->67 49 C:\ProgramData\remcos\logs.dat, data 33->49 dropped 81 Antivirus detection for dropped file 33->81 83 Multi AV Scanner detection for dropped file 33->83 85 Detected unpacking (changes PE section rights) 33->85 87 3 other signatures 33->87 40 FILE.EXE 33->40         started        43 FILE.EXE 33->43         started        45 FILE.EXE 33->45         started        47 9 other processes 33->47 file14 signatures15 process16 signatures17 97 Tries to steal Instant Messenger accounts or passwords 40->97 99 Tries to steal Mail credentials (via file / registry access) 40->99 101 Tries to harvest and steal browser information (history, passwords, etc) 47->101
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa3661c6facf433bf9b20a1d00433c57ba8a8beb8479716987a787d56a82680c/
Threat name:
ByteCode-MSIL.Trojan.Remcos
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Status:
Malicious
First seen:
2022-10-17 14:27:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vi3gdrx2z5btx6nsbioqaqz4k65ivc7lqr4xc2mhu6d5k2ucnaga._file
Verdict:
malicious
Label(s):
formbook
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remcos
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Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:formbook family:remcos botnet:new campaign:vazs collection persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221017-rseq6acag4/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Formbook
Remcos
Malware Config
C2 Extraction:
remcapi.duckdns.org:2028
Unpacked files
SH256 hash:
aa3661c6facf433bf9b20a1d00433c57ba8a8beb8479716987a787d56a82680c
MD5 hash:
f4d8a5e84dbc3621d22194d10ac18afc
SHA1 hash:
8b0cf34574b15bebcd3da0f066250eca7161ad68
Link:
https://www.unpac.me/results/fa0788d8-8d67-4737-af6e-eaec52c58f89/
Malware family:
Remcos
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/aa3661c6facf/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/aa3661c6facf433bf9b20a1d00433c57ba8a8beb8479716987a787d56a82680c

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
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/321030/

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