MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523. 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: e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523
SHA3-384 hash: 9c5c4897d423865c59fc1eaf4cab5059f1e7d5fc63e0b84db86ade9d5dd072335f0707b5d03b470315565da8b8bef4cc
SHA1 hash: 30d1ff434b659916eaf8c37fea1190b91aa650ce
MD5 hash: 5de1c7ab2a83edc8ae757ba8d7f62adb
humanhash: two-april-wolfram-maine
File name:5de1c7ab2a83edc8ae757ba8d7f62adb.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'436'944 bytes
First seen:2021-01-19 07:55:43 UTC
Last seen:2021-01-19 09:58:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:G2WPaCV8KJ9YfHHFo2PvWP1T+7S+suYTW1Sn19jNxbYAP4HJSnqAoCwsMtLUBVhx:G2WPaCVh9ov+P1TC0uKWATbYao8v
Threatray 1'417 similar samples on MalwareBazaar
TLSH DA6510233DD7A9189A28CC4DBEEE702FC59533327A2A9DFF81B61A87232354147B1D51
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
grtwyagvbxnzmklopmdhsyuwaszxbyhredsnmko.ydns.eu

Intelligence

File Origin
# of uploads :
3
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Product List 01.xlsx
Verdict:
Malicious activity
Analysis date:
2021-01-19 06:09:34 UTC
Tags:
encrypted exploit CVE-2017-11882 loader rat remcos keylogger
Link:
https://app.any.run/tasks/9dc59e41-7d5b-4be4-87ae-00e129f8c790

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/112828/
Detection(s):
SecuriteInfo.com.Artemis.27463.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
Creating a process with a hidden window
Launching a process
Adding an access-denied ACE
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Creating a window
Deleting a recently created file
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
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/584616
Signature
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 341342 Sample: 8621k0obCG.exe Startdate: 19/01/2021 Architecture: WINDOWS Score: 100 82 grtwyagvbxnzmklopmdhsyuwaszxbyhredsnmko.ydns.eu 2->82 86 Malicious sample detected (through community Yara rule) 2->86 88 Multi AV Scanner detection for submitted file 2->88 90 Detected Remcos RAT 2->90 92 2 other signatures 2->92 12 8621k0obCG.exe 3 2->12         started        15 win.exe 2->15         started        17 win.exe 2->17         started        signatures3 process4 signatures5 98 Contains functionality to steal Chrome passwords or cookies 12->98 100 Contains functionality to capture and log keystrokes 12->100 102 Contains functionality to inject code into remote processes 12->102 106 2 other signatures 12->106 19 8621k0obCG.exe 4 4 12->19         started        22 WerFault.exe 23 9 12->22         started        25 cmd.exe 1 12->25         started        31 2 other processes 12->31 104 Hides threads from debuggers 15->104 27 cmd.exe 15->27         started        29 cmd.exe 15->29         started        process6 dnsIp7 76 C:\Users\user\AppData\Roaming\win.exe, PE32 19->76 dropped 78 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 19->78 dropped 33 wscript.exe 1 19->33         started        84 192.168.2.1 unknown unknown 22->84 80 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 22->80 dropped 35 conhost.exe 25->35         started        37 timeout.exe 1 25->37         started        39 conhost.exe 27->39         started        41 timeout.exe 27->41         started        43 conhost.exe 31->43         started        45 conhost.exe 31->45         started        47 timeout.exe 1 31->47         started        49 timeout.exe 1 31->49         started        file8 process9 process10 51 cmd.exe 1 33->51         started        53 conhost.exe 35->53         started        55 timeout.exe 35->55         started        process11 57 win.exe 3 51->57         started        60 conhost.exe 51->60         started        signatures12 94 Multi AV Scanner detection for dropped file 57->94 96 Hides threads from debuggers 57->96 62 cmd.exe 57->62         started        64 cmd.exe 57->64         started        66 cmd.exe 57->66         started        process13 process14 68 conhost.exe 62->68         started        70 timeout.exe 62->70         started        72 conhost.exe 64->72         started        74 timeout.exe 64->74         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523/
Threat name:
ByteCode-MSIL.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-01-19 06:52:30 UTC
AV detection:
14 of 46 (30.43%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=46y23chfdaixx3js7h7rjlrjjvlzqjwo4zqmjhfvrvenlejtuurq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'407 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210119-7a7naz3r8j/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
grtwyagvbxnzmklopmdhsyuwaszxbyhredsnmko.ydns.eu:2006
Unpacked files
SH256 hash:
b624a2a3d50ddcc14aa36bc538dca69579010e0b36e15ae35ed5fa092a211de2
MD5 hash:
5e82cebf83db775c37787d0ddd1cdc74
SHA1 hash:
a07989c7a010d8e6c02686147eb1a25ed17b2cbe
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/a3113a53-9172-49a5-bed7-c33b4594a497/
SH256 hash:
ff21da964d8b1c8677280f93820049da1c5c6f8ae8dafda1e95a6a81ad325f2b
MD5 hash:
edc490424638baee6dd36a383835db30
SHA1 hash:
416a8d8fee8c75988ac76ecef81d38c39e8010f4
Link:
https://www.unpac.me/results/a3113a53-9172-49a5-bed7-c33b4594a497/
SH256 hash:
e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523
MD5 hash:
5de1c7ab2a83edc8ae757ba8d7f62adb
SHA1 hash:
30d1ff434b659916eaf8c37fea1190b91aa650ce
Link:
https://www.unpac.me/results/a3113a53-9172-49a5-bed7-c33b4594a497/
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/e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523

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.

Web download

RemcosRAT

Executable exe e7b1ad88e518117bed32f9ff14ae294d579826cee660c49cb58d48d59133a523

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/971514/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/112828/

Comments