MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a. 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: 13


Intelligence 13 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a
SHA3-384 hash: 5e9cf3792933685a9ed95b17ff9c79b0b2fc41b42adc87e8a8b5b5b571f2389ad9d5c6d33fb513639e897ab3896da2b4
SHA1 hash: 6e7c770ba4eefea724c2b015508b6e4adf8bf082
MD5 hash: c246f904d06dde69c6f2740ff1e19925
humanhash: equal-spring-kitten-mango
File name:mn9VCjzNP8ATu3F.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:609'280 bytes
First seen:2021-03-05 13:07:36 UTC
Last seen:2021-03-05 15:20:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Voq8teodM4fNDVbUs2yxe1jEkwWO5QBe1XTLFbI:jyWO5Q01XP2
Threatray 1'623 similar samples on MalwareBazaar
TLSH 9ED4C5EDC04E50EDD4B27FF13BA55C1C93567E116A2AA01A14407D837FBF9A2BB83816
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.julislinq.com
Sending IP: 194.31.96.36
From: Sales01 - PURCHASE <sales@julislinq.com>
Subject: RFQ/2021/03/05/Quotation/NEW ORDER/77028_2021030 APRIL DELIVERY 07
Attachment: Quotation 77028_20210305.iso (contains "mn9VCjzNP8ATu3F.exe")

RemcosRAT C2:
sandshoe.myfirewall.org

Intelligence

File Origin
# of uploads :
2
# of downloads :
160
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
mn9VCjzNP8ATu3F.exe
Verdict:
Malicious activity
Analysis date:
2021-03-05 13:21:12 UTC
Tags:
rat remcos trojan keylogger
Link:
https://app.any.run/tasks/03b21fe7-3ee9-4aa3-bfba-1f001542612b

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/122468/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DJW.genEldorado.2889.29332.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/629823
Signature
.NET source code contains very large strings
Allocates memory in foreign processes
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
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
Contains functionalty to change the wallpaper
Detected Remcos RAT
Drops PE files with benign system names
Found malware configuration
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
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 363886 Sample: mn9VCjzNP8ATu3F.exe Startdate: 05/03/2021 Architecture: WINDOWS Score: 100 72 Found malware configuration 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 Multi AV Scanner detection for submitted file 2->76 78 8 other signatures 2->78 13 mn9VCjzNP8ATu3F.exe 3 2->13         started        17 svchost.exe 2->17         started        19 svchost.exe 2 2->19         started        21 8 other processes 2->21 process3 dnsIp4 60 C:\Users\user\...\mn9VCjzNP8ATu3F.exe.log, ASCII 13->60 dropped 96 Contains functionalty to change the wallpaper 13->96 98 Contains functionality to steal Chrome passwords or cookies 13->98 100 Contains functionality to capture and log keystrokes 13->100 106 3 other signatures 13->106 24 mn9VCjzNP8ATu3F.exe 4 5 13->24         started        102 Changes security center settings (notifications, updates, antivirus, firewall) 17->102 27 MpCmdRun.exe 17->27         started        104 Injects a PE file into a foreign processes 19->104 29 svchost.exe 19->29         started        66 127.0.0.1 unknown unknown 21->66 68 192.168.2.1 unknown unknown 21->68 file5 signatures6 process7 file8 56 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 24->56 dropped 58 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 24->58 dropped 31 wscript.exe 1 24->31         started        33 conhost.exe 27->33         started        process9 process10 35 cmd.exe 1 31->35         started        process11 37 svchost.exe 3 35->37         started        41 conhost.exe 35->41         started        file12 54 C:\Users\user\AppData\...\svchost.exe.log, ASCII 37->54 dropped 80 Multi AV Scanner detection for dropped file 37->80 82 Contains functionalty to change the wallpaper 37->82 84 Contains functionality to steal Chrome passwords or cookies 37->84 86 3 other signatures 37->86 43 svchost.exe 4 3 37->43         started        signatures13 process14 dnsIp15 70 sandshoe.myfirewall.org 45.154.4.68, 2404, 49718 COMBAHTONcombahtonGmbHDE Netherlands 43->70 88 System process connects to network (likely due to code injection or exploit) 43->88 90 Writes to foreign memory regions 43->90 92 Allocates memory in foreign processes 43->92 94 Injects a PE file into a foreign processes 43->94 47 svchost.exe 43->47         started        signatures16 process17 process18 49 iexplore.exe 47->49         started        process19 51 iexplore.exe 49->51         started        dnsIp20 62 github.com 140.82.121.4, 443, 49728, 49729 GITHUBUS United States 51->62 64 avatars.githubusercontent.com 185.199.108.133, 443, 49732, 49733 FASTLYUS Netherlands 51->64
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-03-05 13:08:13 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mr556ilrxmsu5hkclcgs6wgcnvyfpwxybwum2hwhbo4j24nu2r5a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
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4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
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4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
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5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
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dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
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e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'613 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210305-txtll7ez9a/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
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:
sandshoe.myfirewall.org:2404
Unpacked files
SH256 hash:
f763673837a3c425198e873d82498a24aafda884b09788f11f2b157f9e63d5d0
MD5 hash:
4b9bbbf463abe4b2adf501d287a67c96
SHA1 hash:
6d4be1ecd4c3c8710a68211cfba3bcd3f898a75e
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/035bd62f-87f2-4d25-a520-9f8f11be3d18/
Parent samples :
d0dde0ce53f187ed39096c8f44d89ad1afabe101156e03ce4a92f0021e74007a
0d087c258adf5b64cdfeb72b7f8d06a34f6b0ec4179938b34b3ac3009c946a0a
647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a
8737cdfdcf2aa430ccfa6b2c1834a3c0768c201f4a77e3e5315e2bdbc3134a68
SH256 hash:
f8b5b51efedb3e87493ac2439473564603cc3059d57956f209a7310e311a1027
MD5 hash:
d66f89bf838fb52ed59d311a99aea214
SHA1 hash:
342525c4aabbb92abf51459081d34ed0f1cdc965
Link:
https://www.unpac.me/results/035bd62f-87f2-4d25-a520-9f8f11be3d18/
SH256 hash:
76dd0dd384ecadfbd33f8e3fe838e1d2899fa114fb7a675f0c2ce459319ef3a2
MD5 hash:
2263803af7b85bfc096c44743a5a9551
SHA1 hash:
20fdadd3eb9100452624a923c34e69a4bd10fd0f
Link:
https://www.unpac.me/results/035bd62f-87f2-4d25-a520-9f8f11be3d18/
SH256 hash:
647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a
MD5 hash:
c246f904d06dde69c6f2740ff1e19925
SHA1 hash:
6e7c770ba4eefea724c2b015508b6e4adf8bf082
Link:
https://www.unpac.me/results/035bd62f-87f2-4d25-a520-9f8f11be3d18/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.98
Link:
https://yomi.yoroi.company/submissions/647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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

iso 0f60cbda257ca7087fe04c518162d1cde7f7a8614b81e67f1fc0469ec944aa32

RemcosRAT

Executable exe 647bdf2171bb254e9d42588d2f58c26d7057daf80da8cd1ec70bb89d71b4d47a

(this sample)

  
Dropped by
MD5 bbefe5b0b79b883e826793744282abe9
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/122468/
  
Dropped by
SHA256 0f60cbda257ca7087fe04c518162d1cde7f7a8614b81e67f1fc0469ec944aa32

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