MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d
SHA3-384 hash: e9dfbdc9f6859be1f729f62ca88c9c60b10772449ea6ef45eefd7fea9da68822463491c1ddc3ee1df93a8e0f2cd089fa
SHA1 hash: 16b8ad36b82390e42cc5161b2b4e23639876e02e
MD5 hash: e5c5e1397e9898653b60bc1103e34044
humanhash: ceiling-angel-mobile-table
File name:e5c5e1397e9898653b60bc1103e34044.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'081'856 bytes
First seen:2021-07-09 08:20:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:l8obiM3jbULtcxAsDmW+SZmCnPDYRyIfanELQgO2j8o8dze6GnBIwm7Dge4JL0fk:pnjQpclmKZUymanERd2i6WBIL7m
Threatray 310 similar samples on MalwareBazaar
TLSH T1C3358CBC365031AFD737C8368A945C64F56860EB3737CA839093119C690DA47EFA53BA
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/170628/
Detection(s):
SecuriteInfo.com.Trojan.YakbeexMSIL.ZZ4.253.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/c7f86416-b98b-4d53-888f-67c5eec43e76
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/813899
Signature
Allocates memory in foreign processes
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 (creates a PE file in dynamic memory)
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 446310 Sample: KuVDSACx1F.exe Startdate: 09/07/2021 Architecture: WINDOWS Score: 100 67 sdegreenfieldsdeeenf.duckdns.org 2->67 69 aaeeerbbbeee.duckdns.org 2->69 99 Found malware configuration 2->99 101 Malicious sample detected (through community Yara rule) 2->101 103 Multi AV Scanner detection for submitted file 2->103 105 11 other signatures 2->105 14 KuVDSACx1F.exe 3 2->14         started        18 remcos.exe 2 2->18         started        20 remcos.exe 2 2->20         started        signatures3 process4 file5 65 C:\Users\user\AppData\...\KuVDSACx1F.exe.log, ASCII 14->65 dropped 119 Contains functionality to steal Chrome passwords or cookies 14->119 121 Contains functionality to inject code into remote processes 14->121 123 Contains functionality to steal Firefox passwords or cookies 14->123 125 Delayed program exit found 14->125 22 KuVDSACx1F.exe 4 5 14->22         started        127 Injects a PE file into a foreign processes 18->127 25 remcos.exe 18->25         started        27 remcos.exe 20->27         started        signatures6 process7 file8 59 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 22->59 dropped 61 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 22->61 dropped 63 C:\Users\user\AppData\Local\...\install.vbs, data 22->63 dropped 29 wscript.exe 1 22->29         started        process9 process10 31 cmd.exe 1 29->31         started        process11 33 remcos.exe 3 31->33         started        36 conhost.exe 31->36         started        signatures12 91 Multi AV Scanner detection for dropped file 33->91 93 Detected unpacking (creates a PE file in dynamic memory) 33->93 95 Machine Learning detection for dropped file 33->95 97 Injects a PE file into a foreign processes 33->97 38 remcos.exe 3 33->38         started        process13 dnsIp14 71 sdegreenfieldsdeeenf.duckdns.org 195.133.40.19, 49780, 6553 SPD-NETTR Russian Federation 38->71 73 fieldsdegreenf.duckdns.org 203.159.80.101, 49740, 49741, 49782 LOVESERVERSGB Netherlands 38->73 75 aaeeerbbbeee.duckdns.org 38->75 107 Writes to foreign memory regions 38->107 109 Allocates memory in foreign processes 38->109 111 Installs a global keyboard hook 38->111 113 Injects a PE file into a foreign processes 38->113 42 remcos.exe 38->42         started        45 remcos.exe 38->45         started        47 svchost.exe 38->47         started        50 remcos.exe 38->50         started        signatures15 process16 dnsIp17 115 Tries to harvest and steal browser information (history, passwords, etc) 42->115 117 Tries to steal Instant Messenger accounts or passwords 45->117 89 192.168.2.1 unknown unknown 47->89 52 iexplore.exe 47->52         started        signatures18 process19 process20 54 iexplore.exe 52->54         started        57 iexplore.exe 52->57         started        dnsIp21 77 github.com 140.82.121.4, 443, 49750, 49751 GITHUBUS United States 54->77 79 avatars.githubusercontent.com 185.199.110.133, 443, 49755, 49756 FASTLYUS Netherlands 54->79 87 2 other IPs or domains 54->87 81 140.82.121.3, 443, 49766, 49767 GITHUBUS United States 57->81 83 185.199.108.133, 443, 49771, 49772 FASTLYUS Netherlands 57->83 85 js.monitor.azure.com 57->85
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-08 23:44:32 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=djp66sr3xtqkhz3tipbxsreevcfezpscurtobf2jvosy5iebxwgq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
10c58df72a83689d06a1562b349fa195f853465e14cdab38f7dc8ae77fe52d4b
RemcosRAT
219fc775299b765c2a1626b602f478d3642139dc243a46120281843bdb5bd5e9
RemcosRAT
41ed87725575a97d3f1a04554cb78dd3fb973e209950d2f7c54168626ce57ef4
RemcosRAT
5c85d31e96aa84a80c123af889f960bbf39a7c13a2ed9e2d9644ad2e3fa366de
RemcosRAT
653162513b0b91ca4232620e9233402d8da6b89a362c78475d2c20da78f9e72d
RemcosRAT
6eed5350c18b26f6aadaf28e5ceb48ca742db7fbee28fbe9aa7f3c552651e048
RemcosRAT
79861a10fcfaf967d54382b93d84ed03e5d5202cd3dfdcb599a535520360017e
RemcosRAT
f198970271e10830bafa86eccc5ce43e5075a15ed43f4e1924d0e8e0824f218b
RemcosRAT
+ 300 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:chrome persistence rat spyware stealer
Link:
https://tria.ge/reports/210709-4rpjgxy4je/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Reads user/profile data of web browsers
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
fieldsdegreenf.duckdns.org:6553
aaeeerbbbeee.duckdns.org:6553
sdegreenfieldsdeeenf.duckdns.org:6553
Unpacked files
SH256 hash:
58d98d65de73250228b7977a3ac3125a0002a89f1d06698416e7db254fe8d681
MD5 hash:
d6c454b53ef6f7cab60d85b72a854847
SHA1 hash:
ab9a1949b250c164d8407d0ddb9cde268eb324dc
Link:
https://www.unpac.me/results/bd5bf6bc-3a55-41a3-88db-db3fd8f8275b/
SH256 hash:
ea2374c8bd34ec2b2c851ed8d3080da0dc7443fb013f771b8da2f134e95d7f4b
MD5 hash:
5a9a65ebf93ca99ce9ffa42f66170a93
SHA1 hash:
89057baf7d9321e027a0e07822de236e0a95f25c
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/bd5bf6bc-3a55-41a3-88db-db3fd8f8275b/
Parent samples :
eb55fdd4d15cf3d07905037073a275ba2697e8fdb2a9f60c0b16cf70969cd476
d144ad20d75ca601f1189b61459dd9f330ca804db475823bd3e0bb3c0c89f4df
1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d
16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a
cbe42b277b9e2d8ad915917a6c9a6cca9858efb70c342462a0a6701b39dda1fc
95d7c99af4ea07ed847623e0cb78145ac3e462b8fc294a62258d84cae3fe8af1
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/bd5bf6bc-3a55-41a3-88db-db3fd8f8275b/
SH256 hash:
1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d
MD5 hash:
e5c5e1397e9898653b60bc1103e34044
SHA1 hash:
16b8ad36b82390e42cc5161b2b4e23639876e02e
Link:
https://www.unpac.me/results/bd5bf6bc-3a55-41a3-88db-db3fd8f8275b/
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/1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d

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: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 1a5fef4a3bbce0a3e77343c3794484a88a4cbe42a466e09749aba58ea081bd8d

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/170628/
  
URLhaus
https://urlhaus.abuse.ch/url/1431607/
  
Delivery method
Distributed via web download

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