MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8445a1f01f0a7175eb9c8521b92223f989b844de32e852102c3fe5824c48097. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8445a1f01f0a7175eb9c8521b92223f989b844de32e852102c3fe5824c48097
SHA3-384 hash: 21e2f2575ab91883ecd6acdbe770e512a32999afdcbcb626dee623bf8b2cf1ff47a98f80565f6d477401014e58be799d
SHA1 hash: 823097fd058305d1f4285e8a53fb984ba283b9ad
MD5 hash: 6baa3dbc68e7c9e4a970d7e0e0267eaf
humanhash: wisconsin-utah-oklahoma-mockingbird
File name:scan copy.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:200'080 bytes
First seen:2022-11-08 14:57:28 UTC
Last seen:2022-11-08 16:45:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 1536:MH7Kxtwe5eT01ZjhGIBOrPaOYdSkjiRNqOP3zqnoqNyi1:MbLe5eT071hEbaFSkjiRrPDqxYi
Threatray 2'972 similar samples on MalwareBazaar
TLSH T1EC142074A1F26AC9F896CEB29E61E60AFFE70C819D41421ED17439F61233B84D2451FE
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 10808a8c8c8a8010 (77 x Formbook, 51 x AgentTesla, 44 x RemcosRAT)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
scan copy.exe
Verdict:
Malicious activity
Analysis date:
2022-11-08 14:58:09 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/e79a3913-e174-45f6-bd76-48c4ab431d59

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/330613/
Detection(s):
SecuriteInfo.com.Trojan.Generic.32073773.19900.20576.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Creating a process from a recently created file
Launching a process
Creating a window
Unauthorized injection to a recently created process
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed packed
Link:
https://www.filescan.io/uploads/636a6e7cc0dbe6b5f9a4b3ed/reports/1fe63c73-ec12-4bcd-9198-ee175fe7382f/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f1b32997-8419-4235-8eee-5ee68517b93c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1108301
Signature
.NET source code references suspicious native API functions
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Drops PE files to the startup folder
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
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 740963 Sample: scan copy.exe Startdate: 08/11/2022 Architecture: WINDOWS Score: 100 96 Malicious sample detected (through community Yara rule) 2->96 98 Antivirus detection for dropped file 2->98 100 Multi AV Scanner detection for dropped file 2->100 102 8 other signatures 2->102 10 scan copy.exe 15 5 2->10         started        process3 dnsIp4 94 transfer.sh 144.76.136.153, 443, 49696 HETZNER-ASDE Germany 10->94 74 C:\ProgramData\VMCVNXXKKDJ.exe, PE32 10->74 dropped 76 C:\Users\user\AppData\...\scan copy.exe.log, CSV 10->76 dropped 14 VMCVNXXKKDJ.exe 1 10->14         started        file5 process6 signatures7 114 Antivirus detection for dropped file 14->114 116 Multi AV Scanner detection for dropped file 14->116 118 Machine Learning detection for dropped file 14->118 120 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 14->120 17 RegSvcs.exe 3 16 14->17         started        22 powershell.exe 8 14->22         started        process8 dnsIp9 78 45.137.22.236, 49697, 5890 ROOTLAYERNETNL Netherlands 17->78 80 geoplugin.net 178.237.33.50, 49698, 80 ATOM86-ASATOM86NL Netherlands 17->80 70 C:\ProgramData\remcos\logs.dat, data 17->70 dropped 104 Writes to foreign memory regions 17->104 106 Maps a DLL or memory area into another process 17->106 108 Installs a global keyboard hook 17->108 24 svchost.exe 13 17->24         started        26 svchost.exe 17->26         started        28 svchost.exe 17->28         started        32 2 other processes 17->32 72 C:\Users\user\AppData\...\Sygdssgssgstem.exe, PE32 22->72 dropped 110 Drops PE files to the startup folder 22->110 112 Powershell drops PE file 22->112 30 conhost.exe 22->30         started        file10 signatures11 process12 process13 34 chrome.exe 14 1 24->34         started        37 chrome.exe 24->37         started        39 conhost.exe 24->39         started        41 chrome.exe 26->41         started        43 chrome.exe 26->43         started        45 conhost.exe 26->45         started        47 chrome.exe 28->47         started        49 2 other processes 28->49 51 4 other processes 32->51 dnsIp14 82 192.168.2.1 unknown unknown 34->82 84 192.168.2.5 unknown unknown 34->84 86 239.255.255.250 unknown Reserved 34->86 53 chrome.exe 34->53         started        56 chrome.exe 37->56         started        58 chrome.exe 41->58         started        60 chrome.exe 43->60         started        62 chrome.exe 47->62         started        64 chrome.exe 49->64         started        66 chrome.exe 51->66         started        68 chrome.exe 51->68         started        process15 dnsIp16 88 mdec.nelreports.net 53->88 90 part-0032.t-0009.fbs1-t-msedge.net 13.107.219.60, 443, 49717, 49865 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 53->90 92 11 other IPs or domains 53->92
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8445a1f01f0a7175eb9c8521b92223f989b844de32e852102c3fe5824c48097/
Threat name:
ByteCode-MSIL.Trojan.Bingoml
Create hunting rule
Status:
Malicious
First seen:
2022-11-07 07:55:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xbcfuhyb6ctroxvzzbjbxerch6mjxbcn4mxikiicyp7fqjgeqclq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
31edb5c9a0590d100f941cfcb0c142abf141fba4a90c6bddb6c7fc59b4475f28
RemcosRAT
3ab2ca682019279e28525a8ff1a72e08badba1c0f3012f926bad1528b2b0944a
RemcosRAT
3c21819ed32b31c231e20b51b1f956e4160a7b8dbfe7468b096ce64b4b138007
RemcosRAT
65054687e67c867b4f3a1fe66888dbc1e43f1152d44ba8a82e98f4374d54ec1d
RemcosRAT
88e06b037f0a779dce49389c9f1e028b8aee5a2f258e4a6e34c53d331dd438ac
RemcosRAT
9d724226a2a3c8676d4a58b64b636d9dcc178c1d40fcf321309afa14505cf285
RemcosRAT
dd228418c8681d5655b1189c61249f20c9da5e1661cad7efacea62a03fcf1687
RemcosRAT
fe800049d4ece336205fd83c50c747fc4f7f18e4cb2f2e80f37d0ec1700166d1
RemcosRAT
+ 2'962 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost brand:microsoft persistence phishing rat
Link:
https://tria.ge/reports/221108-sb6nzschb8/
Behaviour
Enumerates system info in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Program Files directory
Detected potential entity reuse from brand microsoft.
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Drops startup file
Downloads MZ/PE file
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
45.137.22.236:5890
Unpacked files
SH256 hash:
b8445a1f01f0a7175eb9c8521b92223f989b844de32e852102c3fe5824c48097
MD5 hash:
6baa3dbc68e7c9e4a970d7e0e0267eaf
SHA1 hash:
823097fd058305d1f4285e8a53fb984ba283b9ad
Link:
https://www.unpac.me/results/db848571-4543-4e54-9230-5efe16e74447/
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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

RemcosRAT

Executable exe b8445a1f01f0a7175eb9c8521b92223f989b844de32e852102c3fe5824c48097

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/330613/

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