MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4
SHA3-384 hash: f75c3036b6077d5566c34812de5ee3cf3b15500c56d83595f1a0c54b1c0a891dcc85129b8af9d92d97cf0e51234d8d09
SHA1 hash: 021bfb2b3bb7d5565fafb3dccc476386371c4210
MD5 hash: b37ad0b34e2fd56cf57217d17d89107c
humanhash: magazine-jersey-summer-william
File name:ESU51092W310.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:871'936 bytes
First seen:2023-05-08 08:22:51 UTC
Last seen:2023-05-13 22:50:35 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:hXxr18+9f7nRq/pHmlreE4ds1SVNdiTHdjIb:hx1hGZmlT1ODii
Threatray 2'054 similar samples on MalwareBazaar
TLSH T1EB052399B2FECAA7D5194EF8861CB4911370B1ABC4E4E2CC4E7A65C69FD6F000E4454F
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 285430d4d0305428 (10 x Loki, 7 x AgentTesla, 6 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
264
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
ESU51092W310.exe
Verdict:
Malicious activity
Analysis date:
2023-05-08 08:31:03 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/9b3a8396-9c75-4ee9-8b8c-b41a8312dd85

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/387434/
Detection(s):
Sanesecurity.Malware.28872.BadIN4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
clipbanker comodo darkkomet packed
Link:
https://www.filescan.io/uploads/6458b16a36a9691aaede28af/reports/5383bf2c-9895-4d66-8764-1288963d1e57/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c8f1936e-dfa8-4876-a77c-d6b906090d29
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1228167
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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 / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 861130 Sample: ESU51092W310.exe Startdate: 08/05/2023 Architecture: WINDOWS Score: 100 59 geoplugin.net 2->59 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Sigma detected: Scheduled temp file as task from temp location 2->69 71 8 other signatures 2->71 9 ESU51092W310.exe 7 2->9         started        13 kLnNft.exe 5 2->13         started        signatures3 process4 dnsIp5 47 C:\Users\user\AppData\Roaming\kLnNft.exe, PE32 9->47 dropped 49 C:\Users\user\...\kLnNft.exe:Zone.Identifier, ASCII 9->49 dropped 51 C:\Users\user\AppData\Local\...\tmp7836.tmp, XML 9->51 dropped 53 C:\Users\user\...SU51092W310.exe.log, ASCII 9->53 dropped 73 Uses schtasks.exe or at.exe to add and modify task schedules 9->73 75 Adds a directory exclusion to Windows Defender 9->75 77 Injects a PE file into a foreign processes 9->77 16 ESU51092W310.exe 3 14 9->16         started        20 powershell.exe 21 9->20         started        22 schtasks.exe 1 9->22         started        24 ESU51092W310.exe 9->24         started        61 192.168.2.1 unknown unknown 13->61 79 Multi AV Scanner detection for dropped file 13->79 81 Machine Learning detection for dropped file 13->81 26 schtasks.exe 1 13->26         started        28 kLnNft.exe 13->28         started        file6 signatures7 process8 dnsIp9 55 141.98.6.9, 4500, 49699, 49701 CMCSUS Germany 16->55 57 geoplugin.net 178.237.33.50, 49700, 80 ATOM86-ASATOM86NL Netherlands 16->57 63 Maps a DLL or memory area into another process 16->63 30 ESU51092W310.exe 16->30         started        33 ESU51092W310.exe 16->33         started        35 ESU51092W310.exe 16->35         started        43 15 other processes 16->43 37 conhost.exe 20->37         started        39 conhost.exe 22->39         started        41 conhost.exe 26->41         started        signatures10 process11 signatures12 83 Tries to steal Instant Messenger accounts or passwords 30->83 85 Tries to steal Mail credentials (via file / registry access) 30->85 87 Tries to harvest and steal browser information (history, passwords, etc) 43->87 45 WerFault.exe 43->45         started        process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-05-08 02:00:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6tulpwmeg53mrwjmxr32ng5hzxm23ybrj6hez7t4vvy3f6b543ca._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
02fa0fa7b89d8ad41c32e0613ef1bb1c38d9b93ea98d9295b7d61c2ca400a300
RemcosRAT
1098c30f8d02c4acabc58ffabc34f30e2a234c702851e1c6c88a072d795a2ef1
RemcosRAT
45ecfd36d97932c3c4fb1548684eaa696d4288cb373d95bae9010e057291611b
RemcosRAT
70eddfd85da24eeaffddfdd6326c749326f098b597ce9c8eb79b3e69242a7801
RemcosRAT
c9cd4f96ee3af2513298b62ff2f1c877364fb537fa3d70ef5268db133a4b9b85
RemcosRAT
dc5d1afb2584bade5caff58e4e153c22ec7a52cdbac6c1b56d289b0621c98b10
RemcosRAT
e41b0a6b4bcbd587687a7d0fb61fad61a4540df2b09bee9c19f2dccb1478e554
RemcosRAT
e4a9cb185c46bf812bf29890c14a2f20f6dbddfc1e34abe5e15af668077b33f6
RemcosRAT
ea138d2457b49cccaf16cef8ff2a7479ed5e5207081c5d7ced0a2a3049dcdc16
RemcosRAT
eb70269bb8ef78bb7c44342ed5efac0d76df99207bf45e9f9739aad5b9cf9563
RemcosRAT
+ 2'044 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:throttle1 rat
Link:
https://tria.ge/reports/230508-j95pxabd81/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
141.98.6.9:4500
Unpacked files
SH256 hash:
99b549a6566faec261bc176460f3e5ce0fd1416a322ac406f72ef47d013512c4
MD5 hash:
248684a4ff38c641dc6bdcd9dafc5db8
SHA1 hash:
c69da2524edc56c199281d03fe092e157ff9ccbe
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
SH256 hash:
d67f19ae934424e4275fe4c138c5b57042e52fdbf86ef07df5b380a2c365c45c
MD5 hash:
259a648800f78c573f9ac70bd9337dd0
SHA1 hash:
b2108b4b972a06fe694d87e0dd20bdece9d16ef8
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
SH256 hash:
257eb3442daaf19d93e7468ce6328cf0b1e4e2ba5b153d01ac0c73e96cbc6c58
MD5 hash:
aa22779e09cef84fe9f07bd1629c5a41
SHA1 hash:
3fc21e3fe65981066825665679a683c84fb64f0b
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
SH256 hash:
d8fc5dfdf2800247eb610beb076fec4d2becf6d951e89445d43237fe97814218
MD5 hash:
e5d93dadd08b8bc727e4f4853c6881ba
SHA1 hash:
27e0e057d33f01586193b0cbf06561c2863951f4
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
SH256 hash:
7d4d2727af16bd43a8b84684fcf9471ffac7adb5a99bab3476951c16dcdfa4c3
MD5 hash:
48f25f70764858909ab7fa96721f9d01
SHA1 hash:
1a8628d1c7ea6cf1d06dbfc58cbca14d32139fbd
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
SH256 hash:
f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4
MD5 hash:
b37ad0b34e2fd56cf57217d17d89107c
SHA1 hash:
021bfb2b3bb7d5565fafb3dccc476386371c4210
Link:
https://www.unpac.me/results/3d4ac690-c2c3-4c39-8b5b-8102b5d9b22f/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f4e8b7d98437/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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.

Malspam

RemcosRAT

Executable exe f4e8b7d9843776c8d92cbc77a69ba7cdd9ade0314f8e4cfe7cad71b2f83de6c4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/387434/

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