MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08
SHA3-384 hash: 85d1df4743d3eb7d0b8d00b991ce62090156dc31f46d58025b03628bd1d107c629db35530ed908ed78152a5895f1fcbf
SHA1 hash: 37351369b4a765a64051987eaf78bc982758b055
MD5 hash: f0bf9a1017022eee8830874b817c208c
humanhash: quebec-fanta-sodium-august
File name:Reftt121655888.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:8'704 bytes
First seen:2022-12-16 09:03:44 UTC
Last seen:2022-12-16 10:29:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 96:FfU12QxserPPdL0MIHZjkP8oxSm5cHWnXQr4rC4pskML65P9PDxzNt:FfU12QxnFLCjexSm5c2Brv1l5dn
Threatray 3'173 similar samples on MalwareBazaar
TLSH T119021A26A39C5B37DDAF0F338D6323811328E3518D4FC75F2988410F9E97B1549E2A50
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
187
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Reftt121655888.exe
Verdict:
Malicious activity
Analysis date:
2022-12-16 09:04:46 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/a4f58f76-a6b9-407a-af5d-9f71865ec5a5

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/346937/
Detection(s):
SecuriteInfo.com.Heur.MSIL.Bladabindi.1.15964.21057.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Sending an HTTP GET request to an infection source
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/639c348201ed163ebd10a790/reports/7d50a384-7789-4aad-934e-00d55f877b36/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/609ff56b-095e-47e3-8738-c7251d1d4f08
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1135595
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 768325 Sample: Reftt121655888.exe Startdate: 16/12/2022 Architecture: WINDOWS Score: 100 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 7 other signatures 2->51 7 Reftt121655888.exe 16 7 2->7         started        12 Poauzaia.exe 14 3 2->12         started        14 Poauzaia.exe 3 2->14         started        process3 dnsIp4 41 185.246.220.210, 49689, 49693, 49694 LVLT-10753US Germany 7->41 43 192.168.2.1 unknown unknown 7->43 31 C:\Users\user\AppData\...\Poauzaia.exe, PE32 7->31 dropped 33 C:\Users\...\Poauzaia.exe:Zone.Identifier, ASCII 7->33 dropped 35 C:\Users\user\...\Reftt121655888.exe.log, ASCII 7->35 dropped 53 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->53 55 Encrypted powershell cmdline option found 7->55 57 Injects a PE file into a foreign processes 7->57 16 Reftt121655888.exe 2 14 7->16         started        19 powershell.exe 16 7->19         started        59 Multi AV Scanner detection for dropped file 12->59 61 Machine Learning detection for dropped file 12->61 21 powershell.exe 12->21         started        23 powershell.exe 14->23         started        file5 signatures6 process7 dnsIp8 37 85.31.44.145, 28888, 49691 CLOUDCOMPUTINGDE Germany 16->37 39 geoplugin.net 178.237.33.50, 49692, 80 ATOM86-ASATOM86NL Netherlands 16->39 25 conhost.exe 19->25         started        27 conhost.exe 21->27         started        29 conhost.exe 23->29         started        process9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-12-16 08:46:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rac4ukhjjo5mecbixup6yvbqjapxer3geqbwhrlnm4cbgaicdmea._file
Verdict:
malicious
Similar samples:
0f4929da9001eab23942eab268ece5da252c8b654273cc6ddaad9f87dcfbb1fa
RemcosRAT
2271dd64f293714d67e83203208ad1a9bfaa4ac31dd9c0b252645b0a3d3bfb94
RemcosRAT
34b5a57ce8e27e71daf65bf6b98c76cc7151ff0cee92a4be48b700600690a5c2
RemcosRAT
40e33edbe3cc188d6a3c4e535344b8d2cc94ca910dcd7cf57f79958010338dcf
RemcosRAT
60758b6b4ebbaa83e0db9c18686dd093961be3c87a30b14cc924ac0aa0f5c71c
RemcosRAT
68f9ad5ec23c835ad9509db0915d4065046933d06652eb79784a43fbb7290603
RemcosRAT
81bf53fbfc3cac4f4e2a4d35692127d7a5f32d8b2c06fc44e30775c4ac0be8af
RemcosRAT
a88df82e4b619c1586b5640c801616486f08b3bd32f766847f468d6a23b6c23e
RemcosRAT
af866cc249dd0bd2f0fc7cf644fbedbb88e887269d9cdab7f4190b08d0cae06e
RemcosRAT
eb753a672a27151de8865bcc26f5f8d736b3bb1b49fd895f065f7c900221ef84
RemcosRAT
+ 3'163 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehostkaka persistence rat
Link:
https://tria.ge/reports/221216-k1lfcaee26/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
85.31.44.145:28888
85.31.44.145:41900
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/59bc6571-a4fa-4be3-98e7-fbde4d9588c7
Unpacked files
SH256 hash:
8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08
MD5 hash:
f0bf9a1017022eee8830874b817c208c
SHA1 hash:
37351369b4a765a64051987eaf78bc982758b055
Link:
https://www.unpac.me/results/9cf6700e-0b7b-4e2e-8b4c-25da9f686992/
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/8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08

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:AsyncRat_Detection_Dec_2022
Create hunting rule
Author:Potatech
Description:AsyncRat
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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 8805ca28e94bbac20828bd1fec5430481f724766240363c56d67041301021b08

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/346937/

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