MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8156b58e3c433b45ab29498fe69e2a506167283f9bc09a5310a117a360ba76f0. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8156b58e3c433b45ab29498fe69e2a506167283f9bc09a5310a117a360ba76f0
SHA3-384 hash: fb4784c546a600e4d645379b39221e3a7261bcadeea992e138b694bb789bef21795d87f3e140ed0e15d64811b88be78b
SHA1 hash: 6360faba83a241b4c12883acbd02489457b068bd
MD5 hash: acbd9fc7eb373a859ad632083defb499
humanhash: victor-fish-march-happy
File name:SecuriteInfo.com.Trojan.Siggen13.10810.1172.8309
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:560'539 bytes
First seen:2021-04-21 11:08:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ea4e67a31ace1a72683a99b80cf37830 (70 x Formbook, 64 x GuLoader, 54 x Loki)
ssdeep 12288:uXDSLZdaYKyigkYYkPeApSkd9oyvrspzKwPulTl46/hxz:uXDSLPLcYYdADjourspWqu17D
Threatray 171 similar samples on MalwareBazaar
TLSH 02C423AE1541DCF3E1A5693151F0EF3689A1D959242F438677F02F98BB226C20FBB163
Reporter SecuriteInfoCom
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
QuotationQO210421A87356_samples_products_Sinoma_Internationals.doc
Verdict:
Malicious activity
Analysis date:
2021-04-21 05:58:12 UTC
Tags:
ole-embedded generated-doc exploit CVE-2017-11882 rat remcos keylogger
Link:
https://app.any.run/tasks/bd3b1cba-d5a7-41c1-b88a-14c8681f59fa

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/142042/
Detection(s):
SecuriteInfo.com.Trojan.Siggen13.10810.1172.8309.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
Connection attempt
Setting a keyboard event handler
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/690916
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to prevent local Windows debugging
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
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
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 394397 Sample: SecuriteInfo.com.Trojan.Sig... Startdate: 21/04/2021 Architecture: WINDOWS Score: 100 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for dropped file 2->63 65 6 other signatures 2->65 11 SecuriteInfo.com.Trojan.Siggen13.10810.1172.exe 19 2->11         started        15 remcos.exe 17 2->15         started        17 remcos.exe 17 2->17         started        process3 file4 49 C:\Users\user\AppData\Local\...\etvmlj1.dll, PE32 11->49 dropped 69 Detected unpacking (changes PE section rights) 11->69 71 Detected unpacking (overwrites its own PE header) 11->71 73 Contains functionality to steal Chrome passwords or cookies 11->73 77 4 other signatures 11->77 19 SecuriteInfo.com.Trojan.Siggen13.10810.1172.exe 4 5 11->19         started        51 C:\Users\user\AppData\Local\...\etvmlj1.dll, PE32 15->51 dropped 75 Maps a DLL or memory area into another process 15->75 22 remcos.exe 15->22         started        53 C:\Users\user\AppData\Local\...\etvmlj1.dll, PE32 17->53 dropped 24 remcos.exe 17->24         started        signatures5 process6 file7 43 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->43 dropped 45 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->45 dropped 26 wscript.exe 1 19->26         started        process8 process9 28 cmd.exe 1 26->28         started        process10 30 remcos.exe 17 28->30         started        34 conhost.exe 28->34         started        file11 55 C:\Users\user\AppData\Local\...\etvmlj1.dll, PE32 30->55 dropped 79 Detected unpacking (changes PE section rights) 30->79 81 Detected unpacking (overwrites its own PE header) 30->81 83 Machine Learning detection for dropped file 30->83 85 5 other signatures 30->85 36 remcos.exe 3 3 30->36         started        signatures12 process13 dnsIp14 57 46.183.220.61, 2404, 49739 DATACLUBLV Latvia 36->57 47 C:\Users\user\AppData\Roaming\...\logs.dat, data 36->47 dropped 67 Installs a global keyboard hook 36->67 41 svchost.exe 36->41         started        file15 signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8156b58e3c433b45ab29498fe69e2a506167283f9bc09a5310a117a360ba76f0/
Threat name:
Win32.Trojan.Spynoon
Create hunting rule
Status:
Malicious
First seen:
2021-04-21 08:15:43 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qfllldr4im5ulkzjjgh6nhrkkbqwokb7tpajuuyquel2gyf2o3ya._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0b71fa3fa8549d6a826faaeb1be86b5f866242f35afdb0c0bc7a8ba6c35981e7
RemcosRAT
31720bfa26640d3d2c7fe49b544596264d1886be023d62dcf0ffed3566c3ef81
RemcosRAT
54f6e12269366bf379107d1a920e4b0e428bdcc10cac24457874181916e84ba5
RemcosRAT
6018d6795b86aef8d39205698ca166c8c5d413d06a8a1fa346741bd56ff0e307
RemcosRAT
6b4cda8e0f766056eadbd9c59df82298fa4acbf7a6e526d36c4168e4f511bd8b
RemcosRAT
711e6d2b6ee80bd1ac945eee8aa67dfb485249f95bd0eb0357d33e302336a2fb
RemcosRAT
770239e721583e7852323517a01a9bc5ec4922e612104b48ae79ae442c0c697f
RemcosRAT
8c38dbbc3834ab600313e6cd32e0e1a077726f002a608b5cbf9baa87ff11f90f
RemcosRAT
91e13d173fb96f025e17161b61686fa06272a048eececeb7d4e95ecdcb3de4b8
RemcosRAT
dd9e650b044db8f0e78dde6944cbabb3a5447a8163ae93cd6a724deb73f7a619
RemcosRAT
+ 161 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210421-kg4agvypln/
Behaviour
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
46.183.220.61:2404
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/8156b58e3c433b45ab29498fe69e2a506167283f9bc09a5310a117a360ba76f0

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

File information

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

Web download

RemcosRAT

Executable exe 8156b58e3c433b45ab29498fe69e2a506167283f9bc09a5310a117a360ba76f0

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/142042/
  
URLhaus
https://urlhaus.abuse.ch/url/1148218/
  
Delivery method
Distributed via web download

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-21 12:11:25 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0045] File System Micro-objective::Copy File
5) [C0046] File System Micro-objective::Create Directory
6) [C0048] File System Micro-objective::Delete Directory
7) [C0047] File System Micro-objective::Delete File
8) [C0049] File System Micro-objective::Get File Attributes
9) [C0051] File System Micro-objective::Read File
10) [C0050] File System Micro-objective::Set File Attributes
11) [C0052] File System Micro-objective::Writes File
12) [E1510] Impact::Clipboard Modification
13) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
14) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
15) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
16) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
17) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
18) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
19) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
20) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
21) [C0017] Process Micro-objective::Create Process
22) [C0038] Process Micro-objective::Create Thread
23) [C0018] Process Micro-objective::Terminate Process