MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b
SHA3-384 hash: 8afcc3c586fbc8a6ef08f5c6e050b8a8c489750f8d5e309833b15980949427d5d47cb02dd8821c6eab8a185f4296c8b2
SHA1 hash: 1c4b245e3d6383a76d68982e0b353e123a671f8f
MD5 hash: 296c7ea0291dad6ede3bacf18b4f9658
humanhash: nineteen-fourteen-kitten-london
File name:SecuriteInfo.com.Trojan.DownLoaderNET.445.691.9726
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:32'768 bytes
First seen:2022-08-01 17:58:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 384:FOCLX5iDtgXlES/sB/QWppKvrINANuBcy+:YCDARbppUuBO
Threatray 1'626 similar samples on MalwareBazaar
TLSH T1F1E2D7D14248FF16CA76CFFD88B296022D38EE53D623A50B63447AD90633ADB4633D91
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 e8aa69d4d4cc8ee8 (7 x QuasarRAT, 4 x DCRat, 2 x OrcusRAT)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
401
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/295665/
Detection(s):
SecuriteInfo.com.Trojan.DownLoaderNET.445.691.9726.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62e814e1d40ca36661581e2c/reports/d1663836-ff02-49c9-886a-ca248a6ad3ee/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/4d72958f-2871-426d-9db9-ad73c22112f6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1044382
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
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
Delayed program exit found
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
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 676876 Sample: SecuriteInfo.com.Trojan.Dow... Startdate: 01/08/2022 Architecture: WINDOWS Score: 100 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus detection for URL or domain 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 4 other signatures 2->60 7 SecuriteInfo.com.Trojan.DownLoaderNET.445.691.exe 16 7 2->7         started        12 Xxcifw.exe 14 4 2->12         started        14 Xxcifw.exe 3 2->14         started        process3 dnsIp4 46 20.48.118.182, 49716, 49739, 49754 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 7->46 38 C:\Users\user\AppData\Roaming\...\Xxcifw.exe, PE32 7->38 dropped 40 C:\Users\user\...\Xxcifw.exe:Zone.Identifier, ASCII 7->40 dropped 42 SecuriteInfo.com.T...NET.445.691.exe.log, ASCII 7->42 dropped 62 Encrypted powershell cmdline option found 7->62 64 Writes to foreign memory regions 7->64 66 Allocates memory in foreign processes 7->66 16 InstallUtil.exe 2 7->16         started        20 powershell.exe 17 7->20         started        68 Multi AV Scanner detection for dropped file 12->68 70 Machine Learning detection for dropped file 12->70 72 Injects a PE file into a foreign processes 12->72 22 powershell.exe 14 12->22         started        24 InstallUtil.exe 12->24         started        26 powershell.exe 14->26         started        28 InstallUtil.exe 14->28         started        30 InstallUtil.exe 14->30         started        file5 signatures6 process7 dnsIp8 44 172.94.88.13, 5888 SOFTLAYERUS United States 16->44 48 Contains functionality to steal Chrome passwords or cookies 16->48 50 Contains functionality to steal Firefox passwords or cookies 16->50 52 Delayed program exit found 16->52 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-08-01 15:00:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uzjx3gz3w7b4bmhluigxtukdkl7opwujjpltleg4dpjgpu7cwsfq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313
RemcosRAT
36ee4cc36b92868bf1c674cacd2cf48eaf5b0fc29fba0e1e9dc13aa920b7ee32
RemcosRAT
41dbd50dec8697c71e8feea9912873500ae7061955e1331ac9e657041b7b57f8
RemcosRAT
437e444fdf417fa35390eec589e380b8d5c70b5418a4554ee19cb706470a7edc
RemcosRAT
7d237aef354c63c3618c8c8df4718e2c5056edd90702bc77a233944e2c42de9b
RemcosRAT
910d9b435b172c50ad6cde23d820b4e1f07197e82ecdece15a74fbe750584378
RemcosRAT
a6abf72d95dac9ba6e6e4b53d9cbcd013846660a18ac5b9eeacb6cd87c783a2c
RemcosRAT
cfddcbf0a97a326f7a26683f817e7d42082c30f28113bef76e3c3b491c094c69
RemcosRAT
dff9dfa64f1a603197abded9f5942b83efab0c71520a4fe028ba8fb79cfe7b11
RemcosRAT
e93e5b0f594a010610642083421a9609b380eed335cba10a1138ca31e44c4166
RemcosRAT
+ 1'616 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/220801-wkp95sffc7/
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:
172.94.88.13:5888
Unpacked files
SH256 hash:
a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b
MD5 hash:
296c7ea0291dad6ede3bacf18b4f9658
SHA1 hash:
1c4b245e3d6383a76d68982e0b353e123a671f8f
Link:
https://www.unpac.me/results/86a7c2ec-0808-46d8-bc0f-9338cda6e852/
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/a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2263581/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/295665/

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