MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a
SHA3-384 hash: 487d59a56a43cd79aa2e48c46fc6f65a63545fb2e107c108bfdd857ce27dcd567b6b25e05032f41702bd814d1317f366
SHA1 hash: efdcce0eecda58736bd7fd8ca27201e99866d499
MD5 hash: 5e4262cc3c2d64a7de086d8ee0c2b1de
humanhash: south-jig-london-nitrogen
File name:JH21000634 31000521.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:503'296 bytes
First seen:2021-02-10 07:20:32 UTC
Last seen:2021-02-10 09:25:00 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 6144:8OHncteYNIDpA6MdwV8j2h7ZXl53JNiMuJd1qBzu8F+RTQIApWMu1hxHKUBDWtt9:8onkNIDJnl5y5x80Rsc1/K6otZmkKad
Threatray 1'939 similar samples on MalwareBazaar
TLSH 9BB4C003A9585B86E06C43F87D130DA40FB63B0DA492EADE0D521ECF2D357265D8E66F
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.kolsitegroups.com
Sending IP: 203.159.80.22
From: Numair M. Choudhry <office@kolsitegroups.com>
Reply-To: Numair M. Choudhry <lcatena@studdds.com>
Subject: Re: New Order
Attachment: JH21000634 31000521.gz (contains "JH21000634 31000521.exe")

RemcosRAT C2:
greenfieldsde.duckdns.org:6553 (45.153.242.186)

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
JH21000634 31000521.exe
Verdict:
Malicious activity
Analysis date:
2021-02-10 07:38:57 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/f4773d7c-1333-4d40-b4d6-c74ae20c1941

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/116383/
Detection(s):
SecuriteInfo.com.Trojan.InjectNET.14.28440.19024.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
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:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/604300
Signature
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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 351178 Sample: JH21000634 31000521.exe Startdate: 10/02/2021 Architecture: WINDOWS Score: 100 48 greenfieldsde.duckdns.org 2->48 58 Malicious sample detected (through community Yara rule) 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 Detected Remcos RAT 2->62 64 8 other signatures 2->64 11 JH21000634 31000521.exe 3 2->11         started        15 remcos.exe 2 2->15         started        17 remcos.exe 2 2->17         started        signatures3 process4 file5 46 C:\Users\user\...\JH21000634 31000521.exe.log, ASCII 11->46 dropped 66 Injects a PE file into a foreign processes 11->66 19 JH21000634 31000521.exe 4 5 11->19         started        22 remcos.exe 15->22         started        24 remcos.exe 15->24         started        26 backgroundTaskHost.exe 15->26         started        28 remcos.exe 17->28         started        signatures6 process7 file8 42 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->42 dropped 44 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->44 dropped 30 wscript.exe 1 19->30         started        process9 process10 32 cmd.exe 1 30->32         started        process11 34 remcos.exe 3 32->34         started        37 conhost.exe 32->37         started        signatures12 52 Multi AV Scanner detection for dropped file 34->52 54 Machine Learning detection for dropped file 34->54 56 Injects a PE file into a foreign processes 34->56 39 remcos.exe 34->39         started        process13 dnsIp14 50 greenfieldsde.duckdns.org 97.82.212.250, 6553 CHARTER-20115US United States 39->50
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-10 07:21:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=n43ci6tvuxanrdnlnqsdarb5jxlq5gvnyv6kvapnsuxkdre4dava._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'929 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat spyware
Link:
https://tria.ge/reports/210210-4f4jtfjhr6/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Reads user/profile data of web browsers
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
greenfieldsde.duckdns.org:6553
Unpacked files
SH256 hash:
1fbed2144fd19eb8baf1ea7968d9db304a74b32cdf49106ea442c89b78e6d98e
MD5 hash:
da2a7ba719abb23a5080131e3432ca6a
SHA1 hash:
6de5c201681295adcc6a4945cf49d89d74299406
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/b6dc6680-3acc-4a39-8e5f-d36b319a0285/
SH256 hash:
2ec41720b412f91f91daaefea38007449491b2c016238aa8f23b6866c89bc788
MD5 hash:
987ce346069cf47535e5ac57265c7228
SHA1 hash:
d0085325ed78fcac6d1f605753237abd1c40db22
Link:
https://www.unpac.me/results/b6dc6680-3acc-4a39-8e5f-d36b319a0285/
SH256 hash:
950c8f5b27664b0e73ff082d63382e1becbc7f6d96cf067ac3b78b95d91156a7
MD5 hash:
e932b660238128583f873ed8e12a72a4
SHA1 hash:
b413ae9d08dd697be866076c65ff5244f6b6fa30
Link:
https://www.unpac.me/results/b6dc6680-3acc-4a39-8e5f-d36b319a0285/
SH256 hash:
6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a
MD5 hash:
5e4262cc3c2d64a7de086d8ee0c2b1de
SHA1 hash:
efdcce0eecda58736bd7fd8ca27201e99866d499
Link:
https://www.unpac.me/results/b6dc6680-3acc-4a39-8e5f-d36b319a0285/
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/6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a

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: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

gz d68b663d77b62337f7a036523da9ab794cdae8ce773996e71b5059b3d3721444

RemcosRAT

Executable exe 6f36247a75a5c0d88dab6c2430443d4dd70e9aadc57caa81ed952ea1c49c182a

(this sample)

  
Dropped by
MD5 f4dc134bcc796ba55947984ff66b6b39
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/116383/
  
Dropped by
SHA256 d68b663d77b62337f7a036523da9ab794cdae8ce773996e71b5059b3d3721444

Comments