MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1
SHA3-384 hash: 57744fcbf278ccedf1892a88f363078af39d54b141cfb9ac4fbe4b3a45f9e7bb6c364b492a3d47744d32007bc211f350
SHA1 hash: f2bf474a22ed18684b2b8362b8fb56fd9c40ca5c
MD5 hash: 608a964fa8429da12d23c71c5c88bbbc
humanhash: arizona-louisiana-double-louisiana
File name:608a964fa8429da12d23c71c5c88bbbc.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:380'928 bytes
First seen:2021-06-25 15:36:27 UTC
Last seen:2021-06-25 18:40:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:JgNb0I5XFFC3OrmCBXdZhz3jQQBQKxxBZBwq41pw6q0QOALPlmUPaIncl9K9:6D3mCBHtjQrmD41dHQOALPlmUaIncls9
Threatray 1'837 similar samples on MalwareBazaar
TLSH 67845ABC32A075AEC86BD6BA9EA82CA4EA657577531B9117801301DD9E0DBC7CF104F3
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
136.144.41.27:2404

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
136.144.41.27:2404 https://threatfox.abuse.ch/ioc/153821/

Intelligence

File Origin
# of uploads :
2
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
608a964fa8429da12d23c71c5c88bbbc.exe
Verdict:
Malicious activity
Analysis date:
2021-06-25 15:38:55 UTC
Tags:
trojan rat remcos
Link:
https://app.any.run/tasks/67c7be15-2efa-4660-99f1-35453912d164

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/168354/
Detection(s):
SecuriteInfo.com.Variant.Bulz.533867.22369.21287.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/7899e65f-7b78-47fe-b92e-333f9a9158e6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/808210
Signature
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to delay execution (extensive OutputDebugStringW loop)
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: 440621 Sample: jyh2PBaU3P.exe Startdate: 25/06/2021 Architecture: WINDOWS Score: 100 78 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 8 other signatures 2->84 10 jyh2PBaU3P.exe 6 2->10         started        14 conhosts.exe 4 2->14         started        16 conhosts.exe 4 2->16         started        process3 file4 62 C:\Users\user\AppData\...62nniSOtFXFLKYD.exe, PE32 10->62 dropped 64 C:\Users\user\AppData\Local\...\tmpCC1A.tmp, XML 10->64 dropped 66 C:\Users\user\AppData\...\jyh2PBaU3P.exe.log, ASCII 10->66 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 jyh2PBaU3P.exe 1 5 10->18         started        21 schtasks.exe 1 10->21         started        100 Injects a PE file into a foreign processes 14->100 23 schtasks.exe 14->23         started        25 conhosts.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 58 C:\Users\user\AppData\...\conhosts.exe, PE32 18->58 dropped 60 C:\Users\...\conhosts.exe:Zone.Identifier, ASCII 18->60 dropped 33 cmd.exe 1 18->33         started        36 conhost.exe 21->36         started        38 conhost.exe 23->38         started        40 conhost.exe 29->40         started        process8 signatures9 74 Uses ping.exe to sleep 33->74 76 Uses ping.exe to check the status of other devices and networks 33->76 42 conhosts.exe 5 33->42         started        45 PING.EXE 1 33->45         started        48 conhost.exe 33->48         started        process10 dnsIp11 88 Machine Learning detection for dropped file 42->88 90 Tries to delay execution (extensive OutputDebugStringW loop) 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        72 127.0.0.1 unknown unknown 45->72 signatures12 process13 dnsIp14 68 accessgranted.crabdance.com 136.144.41.27, 2404, 49745 WORLDSTREAMNL Netherlands 50->68 70 192.168.2.1 unknown unknown 50->70 86 Installs a global keyboard hook 50->86 56 conhost.exe 54->56         started        signatures15 process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-06-25 15:37:08 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jqi3p6zbpm3hlzqnmwoobiwd53q33pj6hxn2dllnoyuhr5rfgtiq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
023946cb10325407c30c9ec45ecd241d5e0e3f9ebaeffe2ab12f8cd5f0646013
RemcosRAT
10c5df44b26355f12a62e1243923e9156150f7c86c0ee0f0b25555fae9fca5bd
RemcosRAT
3ce969a94f4bc8dec526e3551626d7e3639bae986304deba85e8f29f039fe345
RemcosRAT
5b474ca6fc8158bd6f14d53bca8962f25db3392dfe324f49ddf376610bd785e4
RemcosRAT
5f4e4a43a01b235d781c6888198b18750529dda9fc4727727940115090e06a6d
RemcosRAT
762d689595557fa3064907433659411b95132e554f7d17fcf62d1a77db51e3e5
RemcosRAT
aad53b1b6e50e7ee426f0790b5497cb7d63704a6775248f258db1263762761bb
RemcosRAT
ac7d008a3ac44bc8dfe3edbbc8542ed5b51bcf911b67eb8e9a715ebb5250ad27
RemcosRAT
ce4962d3126223b4bd68704159cbdc7479fb2df4263fb9f3d57492e770b74a94
RemcosRAT
eeddb4eb1252a45f5a8246d68dc6557f3e0c6f264a0a6f42e81d041c53864a48
RemcosRAT
+ 1'827 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:host persistence rat
Link:
https://tria.ge/reports/210625-vqx739tq4s/
Behaviour
Creates scheduled task(s)
Runs ping.exe
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
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
accessgranted.crabdance.com:2404
Unpacked files
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/e8dd660b-b64a-49fe-a45f-a456c706919a/
SH256 hash:
6d63b74fbe87acff89bc957a47f287cd2eafc4bcbd6c0ff875193b63eb1d2cc3
MD5 hash:
87b034d62a8d6ff9536ba968ab4a3cd1
SHA1 hash:
01d1d869c5d8277859f1a677d4192b123f228663
Link:
https://www.unpac.me/results/e8dd660b-b64a-49fe-a45f-a456c706919a/
SH256 hash:
8511e2b41cc45f38b3683ac9ab2cce072b052ae1bdf02b973497896557df8b82
MD5 hash:
b3094c45a351bfe8fc4278892944fd4c
SHA1 hash:
116dd4c8b81f172a7270e14ce415e0fd2cc63e29
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/e8dd660b-b64a-49fe-a45f-a456c706919a/
Parent samples :
4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1
3a222c1cf4a6781bec3be666c9093c809f80be4f1d4760805aba6f6827e1d278
SH256 hash:
4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1
MD5 hash:
608a964fa8429da12d23c71c5c88bbbc
SHA1 hash:
f2bf474a22ed18684b2b8362b8fb56fd9c40ca5c
Link:
https://www.unpac.me/results/e8dd660b-b64a-49fe-a45f-a456c706919a/
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/4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1

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: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: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: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 4c11b7fb217b3675e60d659ce0a2c3eee1bdbd3e3ddba1ad6d762878f62534d1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1398042/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/168354/

Comments