MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163. 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


Intelligence 15 IOCs YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163
SHA3-384 hash: b91659e69127612989fea70832447f89a08b30b9c26641dcb0c3cd830a22a2977d23ff0b815fe52caeb55b30a09de2d0
SHA1 hash: 5447a7997d60a79a200933b34c881d556f55dcdb
MD5 hash: f23827fa1533dc1da58338cdb2c94b48
humanhash: nineteen-fish-twenty-harry
File name:f23827fa1533dc1da58338cdb2c94b48
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'173'216 bytes
First seen:2022-10-20 00:48:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:6t/whY1aIARsByGS7fqoFuATMSnT716E9pwxwdwaLnWZQzjFeM6DJOjB9sTTHy1p:xfuPSnvZOxwdwunYQb6VOSJ84zm2evt
TLSH T101A509F0A0BB4492F6479D812938F9E106B231B3ADDA0C39176A7705CFEFD543949A4E
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
f23827fa1533dc1da58338cdb2c94b48
Verdict:
Malicious activity
Analysis date:
2022-10-20 00:51:42 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/58f5b888-1e7f-48f0-a7c1-0e89294d358b

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/321862/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Creating a file
Сreating synchronization primitives
Creating a file in the %temp% subdirectories
DNS request
Sending a custom TCP request
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Creating a process with a hidden window
Running batch commands
Launching the process to change network settings
Unauthorized injection to a recently created process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/63509affb5f60e72b8c79455/reports/67260669-7647-4338-91fe-83bec947857a/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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fef00b36-20ed-461e-a1e2-8ee0c1ae122f
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1093844
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in 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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
Writes many files with high entropy
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 726466 Sample: cKAee27Cim.exe Startdate: 20/10/2022 Architecture: WINDOWS Score: 100 52 Multi AV Scanner detection for domain / URL 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus detection for URL or domain 2->56 58 12 other signatures 2->58 7 cKAee27Cim.exe 3 2->7         started        11 cmd.exe 2->11         started        13 unzip.exe 3 2->13         started        15 3 other processes 2->15 process3 file4 48 C:\Users\user\AppData\...\cKAee27Cim.exe.log, ASCII 7->48 dropped 70 Writes to foreign memory regions 7->70 72 Injects a PE file into a foreign processes 7->72 17 InstallUtil.exe 2 42 7->17         started        22 conhost.exe 11->22         started        24 choice.exe 11->24         started        26 conhost.exe 13->26         started        28 conhost.exe 15->28         started        30 conhost.exe 15->30         started        32 conhost.exe 15->32         started        signatures5 process6 dnsIp7 50 minecraftrpgserver.com 185.252.178.88, 49700, 49701, 80 LVLT-10753US Germany 17->50 38 C:\Users\user\AppData\...\InstallUtil.exe, PE32 17->38 dropped 40 C:\Users\user\...\time_20221021_155307.dat, data 17->40 dropped 42 C:\Users\user\...\time_20221021_145305.dat, data 17->42 dropped 44 36 other malicious files 17->44 dropped 60 Writes many files with high entropy 17->60 62 Installs a global keyboard hook 17->62 34 InstallUtil.exe 3 17->34         started        file8 signatures9 process10 file11 46 C:\ProgramDatabehaviorgraphoogle\unzip.exe, PE32 34->46 dropped 64 Antivirus detection for dropped file 34->64 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 34->66 68 Machine Learning detection for dropped file 34->68 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163/
Threat name:
ByteCode-MSIL.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2022-10-19 21:35:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q46q4qph63vjeh5qa6qkabbgzqizvnum4x3v2hmez2qihaoqafrq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:remcos family:xmrig botnet:220928 miner rat upx
Link:
https://tria.ge/reports/221020-a6cehsfdg5/
Behaviour
Creates scheduled task(s)
Kills process with taskkill
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
UPX packed file
XMRig Miner payload
Remcos
Suspicious use of NtCreateUserProcessOtherParentProcess
xmrig
Malware Config
C2 Extraction:
minecraftrpgserver.com:80
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fd535b20-74f5-4640-9658-5b698a20ac40
Unpacked files
SH256 hash:
e13648eb0c64bf812f67322bbf04c47fb3ac048cbf4add55bd59d1d2d7c38641
MD5 hash:
7369cca6610728fec11ab563b6145622
SHA1 hash:
c3bbe07ab9ad709e9885f26af9c51187ebb84fd6
Link:
https://www.unpac.me/results/1df88e46-a999-40cf-9071-d22deb21f44c/
SH256 hash:
a6acfe617040a5005be0d1675756dc9f09596d3bb2bb3ebc8a2c6881b8c4cfd7
MD5 hash:
db843358b89f4074346cab346720ab06
SHA1 hash:
94d77a5f2d66f20baf557ad30c3ab284665980d9
Link:
https://www.unpac.me/results/1df88e46-a999-40cf-9071-d22deb21f44c/
SH256 hash:
5533ae83a1783618075884febd0d4eb6e3782bfbb47d8d376012ad41091ae703
MD5 hash:
06023dcae77296b3c86fb25e7c6a97ee
SHA1 hash:
776a04bf9bd169590d61137ec10cbee460e4a543
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/1df88e46-a999-40cf-9071-d22deb21f44c/
Parent samples :
de97f8f7c987f236ffc128a0cce9a455f29192596032a0754eb62ec21481bfa8
787c4d531c961df4851c6ad6410cd9aaa4d7de8f40e7a288b95878bb807ef7d8
efd4213633c65b490245864feb69279cbdb09add9b70e22e18c183bb0f477cc1
873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163
SH256 hash:
1cf85ca270754489bd63076d288df3f8cbe12c66fba6fc7d4ed00bb82068c182
MD5 hash:
cd818e3babff690d68525d81706e37d2
SHA1 hash:
427809ff4848bd01950935eb4d91a7f8e4785c10
Link:
https://www.unpac.me/results/1df88e46-a999-40cf-9071-d22deb21f44c/
SH256 hash:
873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163
MD5 hash:
f23827fa1533dc1da58338cdb2c94b48
SHA1 hash:
5447a7997d60a79a200933b34c881d556f55dcdb
Link:
https://www.unpac.me/results/1df88e46-a999-40cf-9071-d22deb21f44c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/873d0e41e7f6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe 873d0e41e7f6ea921fb007a0a00426cc119ab68ce5f75d1d84cea08381d00163

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2276782/
  
URLhaus
https://urlhaus.abuse.ch/url/2276802/
Cape
Cape
https://www.capesandbox.com/analysis/321862/

Comments


Avatar
zbet commented on 2022-10-20 00:49:07 UTC

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