MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911. 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: c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911
SHA3-384 hash: 7728b2bef0126036cd52b2ea01519e4a19e3c05df2faa39c26a114f800cf5d6e2fa17eabe5dbf321224b23e754f193b8
SHA1 hash: b073090d43c0afe6972500311f3135b0ee872d06
MD5 hash: 7c6419e152a8478a67a87376e02fba32
humanhash: quiet-johnny-juliet-fanta
File name:c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:379'904 bytes
First seen:2021-02-28 07:06:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:egPD5Guu4ZMhaRdgzaFgwAoG/BWilD6AV0QUICUjFIrXgM8V9PV51+ZOKRh:egPtju4ZMhaRdUEgwQ/giV6A2WpBIEz2
Threatray 2'088 similar samples on MalwareBazaar
TLSH 1084CF9C722472EFC85BD476DEA82CB4EA64787B931F4643942351AE9E4C887CF144F2
Reporter JAMESWT_WT
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911
Verdict:
Malicious activity
Analysis date:
2021-02-28 09:25:45 UTC
Tags:
rat remcos trojan stealer keylogger
Link:
https://app.any.run/tasks/4c8592c8-27b2-4a36-a1f8-b51d7ab553f3

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/119772/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42845.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Creating a file in the %AppData% subdirectories
Creating a process from 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
Enabling autorun by creating a file
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.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/621200
Signature
C2 URLs / IPs found in malware configuration
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
Found malware configuration
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
PE file contains section with special chars
PE file has nameless sections
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 359591 Sample: esNk5fUU6B Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 84 Found malware configuration 2->84 86 Malicious sample detected (through community Yara rule) 2->86 88 Multi AV Scanner detection for dropped file 2->88 90 13 other signatures 2->90 11 esNk5fUU6B.exe 6 2->11         started        15 remcos.exe 4 2->15         started        17 remcos.exe 2->17         started        process3 file4 72 C:\Users\user\AppData\...\oFmfJrnwDuH.exe, PE32 11->72 dropped 74 C:\Users\user\AppData\Local\...\tmp6822.tmp, XML 11->74 dropped 76 C:\Users\user\AppData\...\esNk5fUU6B.exe.log, ASCII 11->76 dropped 106 Contains functionality to steal Chrome passwords or cookies 11->106 108 Contains functionality to capture and log keystrokes 11->108 110 Contains functionality to inject code into remote processes 11->110 112 Contains functionality to steal Firefox passwords or cookies 11->112 19 esNk5fUU6B.exe 4 5 11->19         started        22 schtasks.exe 1 11->22         started        114 Injects a PE file into a foreign processes 15->114 24 schtasks.exe 15->24         started        26 remcos.exe 15->26         started        28 schtasks.exe 17->28         started        30 remcos.exe 17->30         started        signatures5 process6 file7 66 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->66 dropped 68 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->68 dropped 32 wscript.exe 1 19->32         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        38 conhost.exe 28->38         started        process8 process9 40 cmd.exe 1 32->40         started        process10 42 remcos.exe 5 40->42         started        46 conhost.exe 40->46         started        file11 70 C:\Users\user\AppData\...\remcos.exe.log, ASCII 42->70 dropped 98 Multi AV Scanner detection for dropped file 42->98 100 Contains functionalty to change the wallpaper 42->100 102 Machine Learning detection for dropped file 42->102 104 4 other signatures 42->104 48 remcos.exe 2 4 42->48         started        52 schtasks.exe 1 42->52         started        signatures12 process13 dnsIp14 78 greenfieldsde.duckdns.org 79.134.225.79, 49729, 49730, 49731 FINK-TELECOM-SERVICESCH Switzerland 48->78 82 Injects a PE file into a foreign processes 48->82 54 remcos.exe 48->54         started        57 remcos.exe 48->57         started        60 remcos.exe 48->60         started        64 2 other processes 48->64 62 conhost.exe 52->62         started        signatures15 process16 dnsIp17 92 Tries to steal Instant Messenger accounts or passwords 54->92 94 Tries to steal Mail credentials (via file access) 54->94 80 192.168.2.1 unknown unknown 57->80 96 Tries to harvest and steal browser information (history, passwords, etc) 57->96 signatures18
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-02-20 10:06:08 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yb5i2posik5jofupxndi5ebuevfzzbj2fypmf5w6t6bnhb65deiq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
346c5380b5669b73b9fc43a1a17c31ea17985488e9ea947d93a1c6858ebab5e1
RemcosRAT
5ab68910c53ccaea0aa6c9e51fa8ad92433cba369163f99f636973b32abda555
RemcosRAT
5e31a4916e479c18347d59e0a98dc12738efb5acbad3ba3e677fb24fd87e7adc
RemcosRAT
a66b740c103035f94d2d78140ead520be0e9ee0c218ab7dc17ebb3cfa2ea4f86
RemcosRAT
bd4965c3df36016318a4c1533f5d68f42a11eefb3b455fbed9a9b62b2d183889
RemcosRAT
c032e316eefbacca4b3ddfe7fc2ee9ac5f86daea767232d2322f7fdfe4b18993
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 2'078 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat spyware
Link:
https://tria.ge/reports/210228-8h762g8e8s/
Behaviour
Creates scheduled task(s)
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:
3e0ea31998be9ca41e253526f346439c8be16c63c7f56c1aaf00afd6ce971ae3
MD5 hash:
543db2945169ebcd48d42fed0f256d47
SHA1 hash:
d975b6604d4c616ef463b595964672e4d9445491
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/e44cb92a-3a35-4946-8bc9-d299585a9f55/
Parent samples :
d939f9d2a1a45d0dde7ee84561937d8a35f2e82dcb79f6ac48b8881a9f57be15
c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911
SH256 hash:
2ec41720b412f91f91daaefea38007449491b2c016238aa8f23b6866c89bc788
MD5 hash:
987ce346069cf47535e5ac57265c7228
SHA1 hash:
d0085325ed78fcac6d1f605753237abd1c40db22
Link:
https://www.unpac.me/results/e44cb92a-3a35-4946-8bc9-d299585a9f55/
SH256 hash:
9f1c47e55c986aa595ea3f6eb3cd166b81bd28fb2ce60c719e2f54b16c3ff6e1
MD5 hash:
49d66738ea656246d57afa65f6077ba8
SHA1 hash:
1f3552a3c9b55be32c516488d92034b1fdc49de8
Link:
https://www.unpac.me/results/e44cb92a-3a35-4946-8bc9-d299585a9f55/
SH256 hash:
c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911
MD5 hash:
7c6419e152a8478a67a87376e02fba32
SHA1 hash:
b073090d43c0afe6972500311f3135b0ee872d06
Link:
https://www.unpac.me/results/e44cb92a-3a35-4946-8bc9-d299585a9f55/
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/c07a8d3dd242ba97168fbb468e9034254b9c853a2e1ec2f6de9f82d387dd1911

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
Rule name:win_remcos_g0
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann<at>fkie.fraunhofer.de>

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/119772/

Comments