MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7. 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: 11


Intelligence 11 IOCs 1 YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7
SHA3-384 hash: df91bdf072e9aca8291cff5d6483058c58e0c14710fdfdc11069beb4b63e6dd3fdbccc5b5a7e2460468f3d141f6052b6
SHA1 hash: e94f1e6b6af1d52627e472ba01075c630a9abbae
MD5 hash: 513df18163fee3d5f8b27aae6e265aeb
humanhash: carolina-summer-georgia-zebra
File name:513df18163fee3d5f8b27aae6e265aeb.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:619'008 bytes
First seen:2021-07-03 06:35:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:7rE/Kzxe+rA7MRiCrzbw9+YP0H/r0gwaMlRcNUAIQEnu3:7A/4o+rGuA9bcr0/bGUu
TLSH E1D4F11837BDCE56E0BF5BBA90A11410C775F222E347EB095DC022EE4D67B61CE8664B
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
37.0.11.230:2404

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
37.0.11.230:2404 https://threatfox.abuse.ch/ioc/157362/

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
513df18163fee3d5f8b27aae6e265aeb.exe
Verdict:
Malicious activity
Analysis date:
2021-07-03 06:39:59 UTC
Tags:
trojan rat remcos
Link:
https://app.any.run/tasks/9ea14245-8630-4f27-b2f6-ffdbebf49825

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/169494/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.900-1.UNOFFICIAL
Create hunting rule

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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/82b069d8-1e06-4bc7-88a5-ddc6090043c4
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/811363
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
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
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 443771 Sample: Y8a4oAePKb.exe Startdate: 03/07/2021 Architecture: WINDOWS Score: 100 80 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->80 82 Found malware configuration 2->82 84 Malicious sample detected (through community Yara rule) 2->84 86 8 other signatures 2->86 10 Y8a4oAePKb.exe 6 2->10         started        14 conhosts.exe 4 2->14         started        16 conhosts.exe 4 2->16         started        process3 file4 64 C:\Users\user\AppData\Roaming\thslFII.exe, PE32 10->64 dropped 66 C:\Users\user\AppData\Local\...\tmpA219.tmp, XML 10->66 dropped 68 C:\Users\user\AppData\...\Y8a4oAePKb.exe.log, ASCII 10->68 dropped 94 Contains functionality to detect virtual machines (IN, VMware) 10->94 96 Contains functionality to steal Chrome passwords or cookies 10->96 98 Contains functionality to capture and log keystrokes 10->98 102 3 other signatures 10->102 18 Y8a4oAePKb.exe 1 5 10->18         started        21 schtasks.exe 1 10->21         started        23 Y8a4oAePKb.exe 10->23         started        100 Injects a PE file into a foreign processes 14->100 25 schtasks.exe 14->25         started        27 conhosts.exe 14->27         started        29 schtasks.exe 16->29         started        31 conhosts.exe 16->31         started        signatures5 process6 file7 60 C:\Users\user\AppData\...\conhosts.exe, PE32 18->60 dropped 62 C:\Users\...\conhosts.exe:Zone.Identifier, ASCII 18->62 dropped 33 cmd.exe 1 18->33         started        36 conhost.exe 21->36         started        38 conhost.exe 25->38         started        40 conhost.exe 29->40         started        process8 signatures9 76 Uses ping.exe to sleep 33->76 78 Uses ping.exe to check the status of other devices and networks 33->78 42 conhosts.exe 5 33->42         started        45 PING.EXE 1 33->45         started        48 conhost.exe 33->48         started        process10 dnsIp11 90 Multi AV Scanner detection for dropped file 42->90 92 Injects a PE file into a foreign processes 42->92 50 conhosts.exe 42->50         started        54 schtasks.exe 42->54         started        56 conhosts.exe 42->56         started        74 127.0.0.1 unknown unknown 45->74 signatures12 process13 dnsIp14 70 accessgranted.ydns.eu 37.0.11.230, 2404, 49736 WKD-ASIE Netherlands 50->70 72 192.168.2.1 unknown unknown 50->72 88 Installs a global keyboard hook 50->88 58 conhost.exe 54->58         started        signatures15 process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-02 14:49:58 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ywrp47qxosyrjpoyvky4j5asrjmmcan6eu5gcc4a4454nqn75x3q._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:host persistence rat
Link:
https://tria.ge/reports/210703-bc2w6zxq9e/
Behaviour
Creates scheduled task(s)
Runs ping.exe
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:
accessgranted.ydns.eu:2404
Unpacked files
SH256 hash:
cd4c7f58d118ed41e63c9c286e668777c4febb800d55efe69234553a5c3cbe70
MD5 hash:
3de981fb6f579da39a58acacd6efb0c6
SHA1 hash:
ad17487d81c56631f0cf0033f75e977e18dd7437
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/5c3767f6-c323-4f46-aad6-8bae57bf50e8/
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/5c3767f6-c323-4f46-aad6-8bae57bf50e8/
SH256 hash:
dfdd3a8f56d7c40e916ba8f7a81816b9595cf4f5f540c069eb07b57eeeb465c4
MD5 hash:
a10fc4c1a9e415e2cc9b3043676cea24
SHA1 hash:
515a85f858bb2f1e4843f51caf1881d6c090d7a1
Link:
https://www.unpac.me/results/5c3767f6-c323-4f46-aad6-8bae57bf50e8/
SH256 hash:
c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7
MD5 hash:
513df18163fee3d5f8b27aae6e265aeb
SHA1 hash:
e94f1e6b6af1d52627e472ba01075c630a9abbae
Link:
https://www.unpac.me/results/5c3767f6-c323-4f46-aad6-8bae57bf50e8/
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/c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7

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:APT_NK_BabyShark_KimJoingRAT_Apr19_1
Create hunting rule
Author:Florian Roth
Description:Detects BabyShark KimJongRAT
Reference:https://unit42.paloaltonetworks.com/babyshark-malware-part-two-attacks-continue-using-kimjongrat-and-pcrat/
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/
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 c5a2fe7e1774b114bdd8aab1c4f4128a58c101be253a610b80e73bc6c1bfedf7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1398042/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/169494/

Comments