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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819
SHA3-384 hash: b1c098c7539fdb660e762244b44b3b1bc424ee1f387054a63f06dfaa34d5361c1f018ab2e7c935adc999c62efedb96a5
SHA1 hash: 330c569f46366ec660ed3e98bf384bcaeec3fe00
MD5 hash: 0adde8b59fdacd77b8030d1d7ab5431c
humanhash: pasta-winter-alpha-massachusetts
File name:RFQ BCG 10094601152024_pdf(73kb).exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:512'536 bytes
First seen:2024-01-22 19:12:45 UTC
Last seen:2024-01-22 21:28:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b1a57b635b23ffd553b3fd1e0960b2bd (39 x Formbook, 29 x Loki, 27 x AgentTesla)
ssdeep 12288:LwCTqwzkurmSB1mgtXPa/JVoJ7frmIsqKOeIaV:LDuHcP1tf0JVoJfs5Nv
TLSH T1A7B4236424811463FE1B0FB291F15732F9B3F11985B5E1770B78EEB549C26CB9A2B08B
TrID 39.5% (.EXE) InstallShield setup (43053/19/16)
28.6% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
9.6% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter malwarelabnet
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
373
Origin country :
CA CA
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/472363/
Detection(s):
SecuriteInfo.com.Trojan.Inject5.1224.1100.24613.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Enabling the 'hidden' option for recently created files
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/65aebe441dcf0cd544706204/reports/02a06036-2f30-42cb-bf77-76d1da8e52ba/overview
Verdict:
Malicious
Labled as:
Dropper.Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3ce66eb4-1db9-4817-91eb-c2ff1e1a49df
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1378989
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
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
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
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: 1378989 Sample: RFQ_BCG_10094601152024_pdf(... Startdate: 22/01/2024 Architecture: WINDOWS Score: 100 43 igw.myfirewall.org 2->43 45 geoplugin.net 2->45 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Antivirus detection for URL or domain 2->63 65 8 other signatures 2->65 9 RFQ_BCG_10094601152024_pdf(73kb).exe 18 2->9         started        13 njjsooxhhd.exe 2->13         started        15 njjsooxhhd.exe 2->15         started        signatures3 process4 file5 39 C:\Users\user\AppData\Local\...\pprgtaz.exe, PE32 9->39 dropped 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->67 17 pprgtaz.exe 1 2 9->17         started        69 Antivirus detection for dropped file 13->69 71 Multi AV Scanner detection for dropped file 13->71 73 Contains functionality to bypass UAC (CMSTPLUA) 13->73 77 7 other signatures 13->77 21 njjsooxhhd.exe 13->21         started        75 Maps a DLL or memory area into another process 15->75 23 njjsooxhhd.exe 15->23         started        signatures6 process7 file8 37 C:\Users\user\AppData\...\njjsooxhhd.exe, PE32 17->37 dropped 51 Antivirus detection for dropped file 17->51 53 Multi AV Scanner detection for dropped file 17->53 55 Contains functionality to bypass UAC (CMSTPLUA) 17->55 57 11 other signatures 17->57 25 pprgtaz.exe 3 16 17->25         started        signatures9 process10 dnsIp11 47 igw.myfirewall.org 103.35.191.158, 2404, 49716, 49717 VECTANTARTERIANetworksCorporationJP Japan 25->47 49 geoplugin.net 178.237.33.50, 49718, 80 ATOM86-ASATOM86NL Netherlands 25->49 41 C:\ProgramData\outlook\logs.dat, data 25->41 dropped 79 Maps a DLL or memory area into another process 25->79 81 Installs a global keyboard hook 25->81 30 pprgtaz.exe 1 25->30         started        33 pprgtaz.exe 1 25->33         started        35 pprgtaz.exe 2 25->35         started        file12 signatures13 process14 signatures15 83 Tries to steal Instant Messenger accounts or passwords 30->83 85 Tries to steal Mail credentials (via file / registry access) 30->85 87 Tries to harvest and steal browser information (history, passwords, etc) 33->87
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819/
Threat name:
Win32.Trojan.Zenpak
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Status:
Malicious
First seen:
2024-01-15 00:25:23 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
27 of 38 (71.05%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eubw44x3yywine3t7tkgbcvdoyjd43xvqfjkxs4lo3pon62z7amq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:fresh collection persistence rat spyware stealer
Link:
https://tria.ge/reports/240122-xw3v2sdad9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
igw.myfirewall.org:2404
Unpacked files
SH256 hash:
4d2cbeef57af8619b1114c45f6300ef538e7152b80071dd05f59986c78eaf667
MD5 hash:
455a282fb52377e8e8e1b83dadc5b413
SHA1 hash:
4ad5bd5e7603f1f6579a145e26cbe4fce3e4662d
Link:
https://www.unpac.me/results/e04f0474-2d6a-4ee6-bf3d-52ea70fd2307/
SH256 hash:
25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819
MD5 hash:
0adde8b59fdacd77b8030d1d7ab5431c
SHA1 hash:
330c569f46366ec660ed3e98bf384bcaeec3fe00
Link:
https://www.unpac.me/results/e04f0474-2d6a-4ee6-bf3d-52ea70fd2307/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/25036e72fbc6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/25036e72fbc62c869373fcd4608aa376123e6ef58152abcb8b76dee6fb59f819

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Sectigo_Code_Signed
Create hunting rule
Description:Detects code signed by the Sectigo RSA Code Signing CA
Reference:https://bazaar.abuse.ch/export/csv/cscb/
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

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/472363/

Comments