MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df. 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: 10


Intelligence 10 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df
SHA3-384 hash: 9f88045134fcf4e7ffe30bcee7961cdb0ca6a259c71a4e7ed1dc53cb488ac5ec21b53843d1c9ab7ec09cb4761873fba1
SHA1 hash: 090d53988deab8311a1b32c7619e2162f4a7ac88
MD5 hash: 1b9a62412468d093dac7a6beb1aebcbd
humanhash: maine-wisconsin-bluebird-helium
File name:Gray_Sample_pictures001029D7FE46G.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:798'552 bytes
First seen:2020-11-23 07:07:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:aAm0jdx1a+KhJbJMw2CGfMvTuOSeqgVNMdiZqccfWMeu05Wdsfr8tH5s:aWxBy9JMw2CBvNyIAccfW806Q8t2
Threatray 1'152 similar samples on MalwareBazaar
TLSH 2B0542F13002B186CB3BC1BBA150067262A1AE5F53D9707DA764FB7AA47941CA41CBFD
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: pro152-34.mxout.rediffmailpro.com
Sending IP: 119.252.152.34
From: merchant MauveO <m@mauveandolive.com>
Subject: Fw: PO for Marble Slabs
Attachment: Gray_Sample_pictures001029D7FE46G.rar (contains "Gray_Sample_pictures001029D7FE46G.exe")

RemcosRAT C2:
www.stellionlab.com:5004 (185.19.85.183)

Intelligence

File Origin
# of uploads :
1
# of downloads :
147
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
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/544917
Signature
.NET source code references suspicious native API functions
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 321551 Sample: Gray_Sample_pictures001029D... Startdate: 23/11/2020 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for dropped file 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 9 other signatures 2->48 7 Gray_Sample_pictures001029D7FE46G.exe 1 6 2->7         started        11 vlc.exe 3 2->11         started        13 vlc.exe 2 2->13         started        process3 file4 32 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 7->32 dropped 34 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 7->34 dropped 36 Gray_Sample_pictur...1029D7FE46G.exe.log, ASCII 7->36 dropped 50 Contains functionality to steal Chrome passwords or cookies 7->50 52 Contains functionality to capture and log keystrokes 7->52 54 Contains functionality to inject code into remote processes 7->54 56 2 other signatures 7->56 15 Gray_Sample_pictures001029D7FE46G.exe 2 4 7->15         started        19 Gray_Sample_pictures001029D7FE46G.exe 7->19         started        38 C:\Users\user\AppData\Local\...\vlc.exe.log, ASCII 11->38 dropped 21 vlc.exe 11->21         started        23 vlc.exe 13->23         started        25 vlc.exe 13->25         started        signatures5 process6 dnsIp7 40 www.stellionlab.com 185.19.85.183, 49716, 49737, 49742 DATAWIRE-ASCH Switzerland 15->40 30 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 15->30 dropped 27 dxdiag.exe 34 7 15->27         started        file8 process9 signatures10 58 Query firmware table information (likely to detect VMs) 27->58 60 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 27->60
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-21 13:33:56 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=grgohbkcthcycbigl3t4syc4w56qizu7im5gbahwid56gbgi4hpq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
232e0519807d6bd5adad7c4617644803d6e3b3524595dfd80d5eadcc001c99f1
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
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4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'142 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201123-l74m9zglee/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
www.stellionlab.com:5004
Unpacked files
SH256 hash:
344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df
MD5 hash:
1b9a62412468d093dac7a6beb1aebcbd
SHA1 hash:
090d53988deab8311a1b32c7619e2162f4a7ac88
Link:
https://www.unpac.me/results/6d2630ed-6716-446f-901d-4f33e4ddbcd8/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/6d2630ed-6716-446f-901d-4f33e4ddbcd8/
SH256 hash:
6d2a102a2084559ceaa76d9e91fc59258fac5d7c7601428ee88d9816b8902fae
MD5 hash:
0b642225c97718ad8897202aa1360c80
SHA1 hash:
c58fed602c65c08a7b05b83ce19e4150006f2d1a
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/6d2630ed-6716-446f-901d-4f33e4ddbcd8/
Parent samples :
344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df
2afd183ed90b0d240dad19c417fa762da0295aa0614dd20809b406e33ff2304f
SH256 hash:
ca1c3a19afb0b52966aa7c0b6816ba15b4402905abdfcb304e4b5b4ad2544c80
MD5 hash:
7f1bec96327975e2d1e1df3b6d3ad8aa
SHA1 hash:
dce3cbf0fd6e6038d3f17a698dc68d8fd1f2ddef
Link:
https://www.unpac.me/results/6d2630ed-6716-446f-901d-4f33e4ddbcd8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df

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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

RemcosRAT

rar a6d76984e3c80ef3ad3e2d9e6b4d8cd51f344e495cba16bb36899ea134597b52

RemcosRAT

Executable exe 344ce3854299c58105065ee7c9605cb77d04669f433a6080f640fbe304c8e1df

(this sample)

  
Dropped by
MD5 4c9c89bad0faac51b2dae4a2d707ee13
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 a6d76984e3c80ef3ad3e2d9e6b4d8cd51f344e495cba16bb36899ea134597b52
Cape
Cape
https://www.capesandbox.com/analysis/105188/

Comments