MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4d930d5cf4b976a2f3412e3bb542c426fd76df8f3e261d4d68799ee199513791. 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: 15
| SHA256 hash: | 4d930d5cf4b976a2f3412e3bb542c426fd76df8f3e261d4d68799ee199513791 |
|---|---|
| SHA3-384 hash: | 1e72ad7637df64a5065cc62219802ada49d3d915e624ff88b566f0308cd5bcc18c2e662ccd418719168a2f5cb810160b |
| SHA1 hash: | be62f1cc1ac1fa4bc3bb2a76f40441e33d1360bf |
| MD5 hash: | 7872343cd441599fa538258dfa3f2837 |
| humanhash: | black-potato-moon-ack |
| File name: | 1708413251d23e9fb0d0421ac0460c99acd3bef8282a7666739c726cd69a390a9b719b01eb687.dat-decoded |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 494'592 bytes |
| First seen: | 2024-02-20 07:14:13 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 8d5087ff5de35c3fbb9f212b47d63cad (172 x RemcosRAT) |
| ssdeep | 6144:cXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cNq5Gv:cX7tPMK8ctGe4Dzl4h2QnuPs/ZsTcv |
| Threatray | 662 similar samples on MalwareBazaar |
| TLSH | T1A8B49E01BAD1C072D57524300D3AF776EAB8BD2028364A7B73D61D5BFE31190B62A6B7 |
| TrID | 32.2% (.EXE) Win64 Executable (generic) (10523/12/4) 20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 15.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 13.7% (.EXE) Win32 Executable (generic) (4504/4/1) 6.2% (.EXE) OS/2 Executable (generic) (2029/13) |
| File icon (PE): |  |
| dhash icon | c4d48eaa8ad4d4f8 (1'215 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm) |
| Reporter |  abuse_ch |
| Tags: | base64-decoded exe RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
336
Origin country :
DEVendor Threat Intelligence
Detection:
Remcos
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Reading critical registry keys
Creating a file in the %temp% directory
Creating a window
Stealing user critical data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
crypto evasive exploit explorer fingerprint fingerprint keylogger lolbin remcos shell32
Verdict:
Malicious
Labled as:
Backdoor.Remcos
Malware family:
REMCOS
Verdict:
Malicious
Result
Threat name:
Remcos
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
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 submitted file
Sigma detected: Remcos
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)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2024-02-19 17:05:29 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
35 of 38 (92.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 652 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost collection spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Malware Config
C2 Extraction:
mohmusremcos.duckdns.org:14645
Unpacked files
SH256 hash:
4d930d5cf4b976a2f3412e3bb542c426fd76df8f3e261d4d68799ee199513791
MD5 hash:
7872343cd441599fa538258dfa3f2837
SHA1 hash:
be62f1cc1ac1fa4bc3bb2a76f40441e33d1360bf
Detections:
Remcos
win_remcos_w0
win_remcos_auto
malware_windows_remcos_rat
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) |
| Rule name: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Windows_Trojan_Remcos_b296e965 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.remcos. |
| Rule name: | win_remcos_rat_unpacked |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | win_remcos_w0 |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | yarahub_win_remcos_rat_unpacked_aug_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
d23e9fb0d0421ac0460c99acd3bef8282a7666739c726cd69a390a9b719b01eb
Dropped by
SHA256 d23e9fb0d0421ac0460c99acd3bef8282a7666739c726cd69a390a9b719b01eb
Dropped by
MD5 7148f0a7321fd10da497b7e5dd8f4eee
Delivery method
Distributed via web download
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