MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a. 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 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a
SHA3-384 hash: fdae3e8d706d4d359ec5aa7f7d49be50c3c615e7e30828ea566ab1afb3618957f43a517fb2ef48ac80bc36f85f8c1e77
SHA1 hash: b11d5063a9f075c7d45bc227080a953d0c765072
MD5 hash: ff9486367cc42d483e198c212a2a1441
humanhash: alaska-lithium-illinois-kilo
File name:ff9486367cc42d483e198c212a2a1441.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'017'344 bytes
First seen:2021-07-12 08:48:44 UTC
Last seen:2021-07-12 09:59:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:QcazyM31EsWwLttl+EcmPKECjKTBuIs8Ozv:QyWytwLtKEjPeKTTzIv
Threatray 319 similar samples on MalwareBazaar
TLSH T1DD257A2A55741E17E72E82744C638C30F169CCD725B099E379C63DAB38B96013A9E37E
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
140
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ff9486367cc42d483e198c212a2a1441.exe
Verdict:
Malicious activity
Analysis date:
2021-07-12 08:54:43 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/292fae0f-47de-4c88-bc77-430a921a65fe

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/170991/
Detection(s):
SecuriteInfo.com.Trojan.Siggen14.33558.227.15603.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/2316d251-5b47-4220-872a-eec3d012679c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/814648
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 447059 Sample: ZNmefjnZyv.exe Startdate: 12/07/2021 Architecture: WINDOWS Score: 100 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 11 other signatures 2->61 11 ZNmefjnZyv.exe 3 2->11         started        15 remcos.exe 2 2->15         started        17 remcos.exe 2 2->17         started        process3 file4 47 C:\Users\user\AppData\...\ZNmefjnZyv.exe.log, ASCII 11->47 dropped 65 Contains functionality to steal Chrome passwords or cookies 11->65 67 Contains functionality to inject code into remote processes 11->67 69 Contains functionality to steal Firefox passwords or cookies 11->69 71 Delayed program exit found 11->71 19 ZNmefjnZyv.exe 4 5 11->19         started        73 Injects a PE file into a foreign processes 15->73 22 remcos.exe 15->22         started        24 remcos.exe 17->24         started        signatures5 process6 file7 41 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->41 dropped 43 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->43 dropped 45 C:\Users\user\AppData\Local\...\install.vbs, data 19->45 dropped 26 wscript.exe 1 19->26         started        process8 process9 28 cmd.exe 1 26->28         started        process10 30 remcos.exe 3 28->30         started        33 conhost.exe 28->33         started        signatures11 75 Multi AV Scanner detection for dropped file 30->75 77 Detected unpacking (changes PE section rights) 30->77 79 Detected unpacking (overwrites its own PE header) 30->79 81 2 other signatures 30->81 35 remcos.exe 3 3 30->35         started        process12 dnsIp13 49 sdegreenfieldsdeeenf.duckdns.org 195.133.40.19, 49730, 49733, 49736 SPD-NETTR Russian Federation 35->49 51 fieldsdegreenf.duckdns.org 203.159.80.101, 49729, 49732, 49735 LOVESERVERSGB Netherlands 35->51 53 aaeeerbbbeee.duckdns.org 35->53 63 Installs a global keyboard hook 35->63 39 svchost.exe 35->39         started        signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-07-11 18:08:16 UTC
AV detection:
11 of 28 (39.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=c24djyk7nuwgns27fofvvs7ghayebcch2nzr2ydclnl4dqhjvvna._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
10c58df72a83689d06a1562b349fa195f853465e14cdab38f7dc8ae77fe52d4b
RemcosRAT
1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d
RemcosRAT
219fc775299b765c2a1626b602f478d3642139dc243a46120281843bdb5bd5e9
RemcosRAT
653162513b0b91ca4232620e9233402d8da6b89a362c78475d2c20da78f9e72d
RemcosRAT
6eed5350c18b26f6aadaf28e5ceb48ca742db7fbee28fbe9aa7f3c552651e048
RemcosRAT
79861a10fcfaf967d54382b93d84ed03e5d5202cd3dfdcb599a535520360017e
RemcosRAT
8c9ba9842e3e17a820085d913d34d20414ab7acee8106142ce04b5b2bf2581b7
RemcosRAT
d144ad20d75ca601f1189b61459dd9f330ca804db475823bd3e0bb3c0c89f4df
RemcosRAT
f198970271e10830bafa86eccc5ce43e5075a15ed43f4e1924d0e8e0824f218b
RemcosRAT
+ 309 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:chrome persistence rat
Link:
https://tria.ge/reports/210712-1slbkcvzjj/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
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:
fieldsdegreenf.duckdns.org:6553
aaeeerbbbeee.duckdns.org:6553
sdegreenfieldsdeeenf.duckdns.org:6553
Unpacked files
SH256 hash:
c362729899c5956cfa9fc3bcf9b21ac72066a1b84a497ceb1281f76e2f55c54b
MD5 hash:
0327d1374a5ce015ad9c83c5de76e823
SHA1 hash:
e521349d9e96a4191248747c42c78b6f88fc8f63
Link:
https://www.unpac.me/results/21a847b2-d20d-454b-85a9-73a09e3ab803/
SH256 hash:
ea2374c8bd34ec2b2c851ed8d3080da0dc7443fb013f771b8da2f134e95d7f4b
MD5 hash:
5a9a65ebf93ca99ce9ffa42f66170a93
SHA1 hash:
89057baf7d9321e027a0e07822de236e0a95f25c
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/21a847b2-d20d-454b-85a9-73a09e3ab803/
Parent samples :
eb55fdd4d15cf3d07905037073a275ba2697e8fdb2a9f60c0b16cf70969cd476
d144ad20d75ca601f1189b61459dd9f330ca804db475823bd3e0bb3c0c89f4df
1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d
16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a
cbe42b277b9e2d8ad915917a6c9a6cca9858efb70c342462a0a6701b39dda1fc
95d7c99af4ea07ed847623e0cb78145ac3e462b8fc294a62258d84cae3fe8af1
SH256 hash:
2a7fc7b2e41c02dfd58efe0f35e1f0dd9e5a7bb0fcf2e7ec46d9fc49f305f61f
MD5 hash:
14ed4548f64c563dc59dc285d4965dc8
SHA1 hash:
3f71c82500ecb5b8eba843052284853b02e87583
Link:
https://www.unpac.me/results/21a847b2-d20d-454b-85a9-73a09e3ab803/
SH256 hash:
16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a
MD5 hash:
ff9486367cc42d483e198c212a2a1441
SHA1 hash:
b11d5063a9f075c7d45bc227080a953d0c765072
Link:
https://www.unpac.me/results/21a847b2-d20d-454b-85a9-73a09e3ab803/
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/16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1431607/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/170991/

Comments