MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744. 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: 17


Intelligence 17 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
SHA3-384 hash: 86c97b773981574eae54c2278cf8bf65397dc3a00b77be15060aa3a5822208cc6832a4f6090429a8e8b973ca1e5bf0d2
SHA1 hash: 6c75525f455c341e936ec64546fc4d9bfe52ee81
MD5 hash: 6696d37cf0b9b65fd9fc58934d79c9cb
humanhash: xray-network-october-pip
File name:SecuriteInfo.com.Win32.RATX-gen.23971.32281
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:775'680 bytes
First seen:2023-12-08 09:22:03 UTC
Last seen:2023-12-08 09:35:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'472 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:HDWMD9ehE+uDneLBQt20dup/20AQBOLdxD4N1fahKDZncwk6pvxT0K0jlyOJN9R4:FeVZ27zZPdnjImBOQXU
Threatray 3'144 similar samples on MalwareBazaar
TLSH T1A7F4F1A863F02969F3F22B73F8B644506770FC8D3851CBA95525112D0976BB307F1B6A
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4505/5/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
FR FR
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/463512/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.23971.32281.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/6572e0768b5ba47db2d8258f/reports/24cfa545-ddaf-4978-a3ef-b7964e209f84/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
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/8e9b3d0d-9651-4534-8d9e-2f28a21b24b6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1356076
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates executable files without a name
Delayed program exit found
Drops PE files to the startup folder
Found malware configuration
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Copy file to startup via Powershell
Sigma detected: Remcos
Snort IDS alert for network traffic
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)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1356076 Sample: SecuriteInfo.com.Win32.RATX... Startdate: 08/12/2023 Architecture: WINDOWS Score: 100 41 geoplugin.net 2->41 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 13 other signatures 2->53 8 SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe 3 2->8         started        11 .exe 3 2->11         started        signatures3 process4 signatures5 55 Bypasses PowerShell execution policy 8->55 57 Writes to foreign memory regions 8->57 59 Allocates memory in foreign processes 8->59 13 cvtres.exe 8->13         started        16 powershell.exe 13 8->16         started        61 Injects a PE file into a foreign processes 11->61 19 cvtres.exe 3 16 11->19         started        22 powershell.exe 11 11->22         started        process6 dnsIp7 69 Contains functionality to bypass UAC (CMSTPLUA) 13->69 71 Tries to steal Mail credentials (via file registry) 13->71 73 Contains functionalty to change the wallpaper 13->73 85 6 other signatures 13->85 24 WerFault.exe 22 16 13->24         started        37 C:\Users\user\AppData\Roaming\...\.exe, PE32 16->37 dropped 75 Creates executable files without a name 16->75 77 Drops PE files to the startup folder 16->77 79 Powershell drops PE file 16->79 26 conhost.exe 16->26         started        43 107.175.229.139, 49707, 49708, 8087 AS-COLOCROSSINGUS United States 19->43 45 geoplugin.net 178.237.33.50, 49710, 80 ATOM86-ASATOM86NL Netherlands 19->45 39 C:\ProgramData\remcos\logs.dat, data 19->39 dropped 81 Maps a DLL or memory area into another process 19->81 83 Installs a global keyboard hook 19->83 28 cvtres.exe 1 19->28         started        31 cvtres.exe 1 19->31         started        33 cvtres.exe 2 19->33         started        35 conhost.exe 22->35         started        file8 signatures9 process10 signatures11 63 Tries to steal Instant Messenger accounts or passwords 28->63 65 Tries to harvest and steal browser information (history, passwords, etc) 28->65 67 Tries to steal Mail credentials (via file / registry access) 31->67
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-12-08 04:07:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fw4zdonoojpmlh42ffsu4tc7ruv7gy3gft5i2jy2q2jp5jeig5ca._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21e97352d99419e877c055452e9a462aa4f5ca3bb0676dbbb12f5142f89cd79b
RemcosRAT
3bdd69de010f0f5eab2291127a6645fb8ed19f279276a6e7bf1122cf1937d61c
RemcosRAT
43c8f7c4fd456d2e3db0c15024481db6681b8ea7c8f296f99957c36630f76e37
RemcosRAT
459fab3607c86f99959581b618ae69ce5ed530999e192e4d112cafc143b6df7d
RemcosRAT
9886a3be9d53722c29fbb8dca746668425486070e9279dcad1f8db626b62110a
RemcosRAT
a5667f5a28c5e362c0b3a57b38f8d282a89730a7159fb8bdc81fa49ae9a11ac1
RemcosRAT
dfd724316cb0edbf1212cbf5e71f007d22b7a38e7860d96d4d4bedf17eaa85ea
RemcosRAT
+ 3'134 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat
Link:
https://tria.ge/reports/231208-lbx9aaac32/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8087
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/7a4e6794-b9d0-4c50-95ee-086b938ec956/
SH256 hash:
ce57b570f5689195a8ec7096e8939d09ce233f94f1bfcc8ea007a7e29f48aa21
MD5 hash:
5130270716c675cae633e6da177fd6aa
SHA1 hash:
33239327957c5bd27cb5a4c5be1fac87d2dec0f8
Link:
https://www.unpac.me/results/7a4e6794-b9d0-4c50-95ee-086b938ec956/
SH256 hash:
1d5d05f977665e72d96f0cfa60de530d7912a51f44464e805c468b73f53eaf11
MD5 hash:
229284f8cddfa43ac54a0e60196e709b
SHA1 hash:
27bc5b44cc9c2689482a4f622a092beb94bbda8c
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
Link:
https://www.unpac.me/results/7a4e6794-b9d0-4c50-95ee-086b938ec956/
Parent samples :
03e1b46d2f7cd22416f24a7d5f4eabc8dd2b3de80b8b8cdc8d360f02ed1d931f
9c365f7df9b2bb958a53890dc80a258de1f5ea0781155f7c2b3741b9dd593867
fc4fb593fdecc5e6c82c0c98decab2ccd213153078489787712a082c299d20cd
2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
dfd724316cb0edbf1212cbf5e71f007d22b7a38e7860d96d4d4bedf17eaa85ea
f05ac4628bc3cc7da752894e47479c2f8532ed5c485943b7abb680a79d4dba9c
3de39937dbba16980b665dcf03505af8bd11a77a9f09d8e5ca69837932a9340e
cf14c5b8ca5ad71f9ca5b37e4784001d9128b161958f6daf5807540eca4ffcc4
SH256 hash:
2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744
MD5 hash:
6696d37cf0b9b65fd9fc58934d79c9cb
SHA1 hash:
6c75525f455c341e936ec64546fc4d9bfe52ee81
Link:
https://www.unpac.me/results/7a4e6794-b9d0-4c50-95ee-086b938ec956/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2db991b9ae72/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

zip 73cd192a1e2293fe540169fa1d0367699b00a6a005d9a913a48d0ef65cca64d0

RemcosRAT

Executable exe 2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/463512/
  
Dropped by
SHA256 73cd192a1e2293fe540169fa1d0367699b00a6a005d9a913a48d0ef65cca64d0
  
Dropped by
MD5 d98d1ac86525405d02b9c39f0b82b383

Comments