MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656. 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 8 File information Comments
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SHA256 hash: 3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656
SHA3-384 hash: 513fed581b23af99d1e820d2f53d283f7b5cb29f1566139b478dd336510610ae20ab90d71ae05caebf49a2659a0c5498
SHA1 hash: 1208d75d6fd23f64b34358254421c9c817f89802
MD5 hash: 0fb29b3596164f56c1e599e88e9de6bc
humanhash: indigo-robert-blossom-yankee
File name:3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'737'664 bytes
First seen:2023-02-07 12:14:17 UTC
Last seen:2023-02-07 13:34:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 49152:rAQuUQKJOdXIA+aXnFT3rXHwrg9VM51cks3tyJGbaaIadIQEOll/WZtUYEzxCWng:unArgUw5/I0IMbW2zxCWt+
Threatray 2'595 similar samples on MalwareBazaar
TLSH T1A3C56D395C738505F8EB38B04E875126BD7C290F38B6CD31ACB5DDE86BE652BE809452
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)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
216
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656
Verdict:
Malicious activity
Analysis date:
2023-02-07 12:17:07 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/dd0c1c99-d2c9-4d26-a919-6ba6e1ac322a

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/361342/
Detection(s):
SecuriteInfo.com.IL.Trojan.MSILZilla.24694.20555.6760.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63e240c989bd67c10fdcfdce/reports/4ceea9d9-2306-48eb-9171-5e17e68dc1c0/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656
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/745dc786-c83d-477c-9f8f-f8ef8c1bedd3
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1167630
Signature
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 800410 Sample: kIBXaU0zQw.exe Startdate: 07/02/2023 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 8 other signatures 2->45 6 kIBXaU0zQw.exe 1 4 2->6         started        10 frirefox.exe 1 2->10         started        12 frirefox.exe 2->12         started        process3 file4 25 C:\Users\user\AppData\...\frirefox.exe, PE32 6->25 dropped 27 C:\Users\...\frirefox.exe:Zone.Identifier, ASCII 6->27 dropped 29 C:\Users\user\AppData\...\kIBXaU0zQw.exe.log, ASCII 6->29 dropped 47 Contains functionality to register a low level keyboard hook 6->47 49 Injects a PE file into a foreign processes 6->49 14 kIBXaU0zQw.exe 2 17 6->14         started        51 Antivirus detection for dropped file 10->51 53 Multi AV Scanner detection for dropped file 10->53 55 Machine Learning detection for dropped file 10->55 19 frirefox.exe 15 10->19         started        21 frirefox.exe 14 12->21         started        23 frirefox.exe 12->23         started        signatures5 process6 dnsIp7 33 176.126.86.245, 49679, 49685, 49687 HOSTHATCHUS Germany 14->33 35 geoplugin.net 178.237.33.50, 49680, 49686, 49688 ATOM86-ASATOM86NL Netherlands 14->35 31 C:\ProgramData\remcos\logs.dat, data 14->31 dropped 37 Installs a global keyboard hook 14->37 file8 signatures9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656/
Threat name:
ByteCode-MSIL.Downloader.Ader
Create hunting rule
Status:
Malicious
First seen:
2023-01-31 14:01:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
25 of 39 (64.10%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hiqoqgy7bpygteahi4hfvdrktigwkb7ktfuw6dpzxwm3qciq2zla._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
RemcosRAT
03541b2cf3bf022eda584b9ead6b6edeb7a47e8ccaa99b2415ee56694c9868cb
RemcosRAT
23dd65161a7f297125c40f5c9e12d9c0bc9c314021a74de9d47ec8bc13146b18
RemcosRAT
3fc5fe06474624df2032970d6c877080a12fdbd0b35f53622e11eb8788ed6c4a
RemcosRAT
69b7150f7be7cfd685c50328e9554d28d99e9f7babdf19eb10ea350a3658f2ac
RemcosRAT
aecb74252f3ae4e3d912c1983de70c06ac29c69b287b31e45d29fbee0ccb5772
RemcosRAT
e876ad440761c60b772b110b7e6f08c4e156ebdb17d78c55aa4594edc65ff78a
RemcosRAT
+ 2'585 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:purecrypter family:remcos botnet:kay & matty co. downloader loader persistence rat
Link:
https://tria.ge/reports/230207-pew26sbe96/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Detect PureCrypter injector
PureCrypter
Remcos
Malware Config
C2 Extraction:
176.126.86.245:62520
Unpacked files
SH256 hash:
3a20e81b1f0bf0699007470e5a8e2a9a0d6507ea99696f0df9bd99b80910d656
MD5 hash:
0fb29b3596164f56c1e599e88e9de6bc
SHA1 hash:
1208d75d6fd23f64b34358254421c9c817f89802
Link:
https://www.unpac.me/results/14fc9672-3956-4459-b232-4098c3c72f85/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3a20e81b1f0b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
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:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
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.

Cape
Cape
https://www.capesandbox.com/analysis/361342/

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