MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6. 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: 15


Intelligence 15 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6
SHA3-384 hash: aef336dfa857e74303fafde07a5b7f360986df83d6fd58ebab8b0ab6aa13685303b7bb151c7beebaa23d41e48b9eac51
SHA1 hash: 86373dafe6bf96c6a751ce27a3d1f4a6056f4031
MD5 hash: 6c6650082660bff9dc22a7dff8034fb0
humanhash: don-nine-speaker-alaska
File name:INV-0520232.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'389'056 bytes
First seen:2023-03-02 00:23:39 UTC
Last seen:2023-03-02 01:27:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:GjeWEgEj9wYYY5+6sFg6d2D7phhqJIKM7Ix3U84FSc7+vn8er6xA:eeWExeYYZFg6W7vPKM8x3U5FZ7+vP6
Threatray 1'689 similar samples on MalwareBazaar
TLSH T1B155CEC637BED522F4EBA032451512C93A39F6877212F12BA737BB508601BFF7A89544
TrID 66.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 98acae8c9682b2b0 (1 x AsyncRAT, 1 x RemcosRAT, 1 x AgentTesla)
Reporter cocaman
Tags:exe RemcosRAT


Avatar
cocaman
Malicious email (T1566.001)
From: ""Sales & Marketing" <abacustrade@galaxy.ocn.ne.jp>" (likely spoofed)
Received: "from galaxy.ocn.ne.jp (unknown [195.133.40.230]) "
Date: "1 Mar 2023 17:38:50 -0700"
Subject: "Re: FWD: New Product List INV-0520232"
Attachment: "INV-0520232.exe"

Intelligence

File Origin
# of uploads :
3
# of downloads :
254
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
INV-0520232.exe
Verdict:
Malicious activity
Analysis date:
2023-03-02 00:27:06 UTC
Tags:
rat remcos stealer
Link:
https://app.any.run/tasks/08554c48-a774-45e6-b76a-aff21ab848c3

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/370989/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.11105.19354.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
barys packed powershell
Link:
https://www.filescan.io/uploads/63ffeca466e79c93ba0d6257/reports/1ffcce15-7bf2-4020-ac20-3a6ec3c219cc/overview
Verdict:
Malicious
Labled as:
Barys.Generic
Link:
https://www.hybrid-analysis.com/sample/37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/95177ebd-ff75-43c2-9f95-c27f2d398c92
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1185343
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
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 signatures2 2 Behavior Graph ID: 818195 Sample: INV-0520232.exe Startdate: 02/03/2023 Architecture: WINDOWS Score: 100 61 Malicious sample detected (through community Yara rule) 2->61 63 Sigma detected: Scheduled temp file as task from temp location 2->63 65 Multi AV Scanner detection for submitted file 2->65 67 7 other signatures 2->67 7 INV-0520232.exe 7 2->7         started        11 XtcargGkH.exe 5 2->11         started        process3 file4 45 C:\Users\user\AppData\Roaming\XtcargGkH.exe, PE32 7->45 dropped 47 C:\Users\...\XtcargGkH.exe:Zone.Identifier, ASCII 7->47 dropped 49 C:\Users\user\AppData\Local\...\tmpF8D9.tmp, XML 7->49 dropped 51 C:\Users\user\AppData\...\INV-0520232.exe.log, ASCII 7->51 dropped 69 Uses schtasks.exe or at.exe to add and modify task schedules 7->69 71 Adds a directory exclusion to Windows Defender 7->71 73 Injects a PE file into a foreign processes 7->73 13 INV-0520232.exe 2 13 7->13         started        17 powershell.exe 21 7->17         started        19 powershell.exe 21 7->19         started        21 schtasks.exe 1 7->21         started        75 Multi AV Scanner detection for dropped file 11->75 77 Machine Learning detection for dropped file 11->77 23 schtasks.exe 11->23         started        25 XtcargGkH.exe 11->25         started        signatures5 process6 dnsIp7 55 185.65.134.165, 49700, 49701, 49702 ESAB-ASSE Sweden 13->55 57 127.0.0.1 unknown unknown 13->57 59 2 other IPs or domains 13->59 85 Tries to harvest and steal browser information (history, passwords, etc) 13->85 87 Maps a DLL or memory area into another process 13->87 27 INV-0520232.exe 13->27         started        30 INV-0520232.exe 13->30         started        32 INV-0520232.exe 13->32         started        42 26 other processes 13->42 34 conhost.exe 17->34         started        36 conhost.exe 19->36         started        38 conhost.exe 21->38         started        40 conhost.exe 23->40         started        signatures8 process9 dnsIp10 79 Tries to steal Instant Messenger accounts or passwords 27->79 81 Tries to steal Mail credentials (via file / registry access) 27->81 53 192.168.2.1 unknown unknown 42->53 83 Tries to harvest and steal browser information (history, passwords, etc) 42->83 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6/
Threat name:
ByteCode-MSIL.Trojan.StealerLoader
Create hunting rule
Status:
Malicious
First seen:
2023-03-02 00:24:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 25 (88.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g7v3syrncps6rw4nt6syv33m72jhrb32da2xvengkarbgces7cta._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
24c69122ace7d707b1838376111192f2bcdbd02531521b656536773b8bc4710c
RemcosRAT
366d56c69b0267ee6ac2a27cc199911123ed7f511d3e54ac1c69f52236644e84
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478dba764af2f0d8179f62518b9d675cec897722b4bc9dc75b5bf66cbca0b9a0
RemcosRAT
808af00d1b4ec59a042cfa6d2a46549fca9d2d588847287bab70321622e008cd
RemcosRAT
91855c7204cf7b1a4a56e87b16e5cde14eb8aba073690ca817f2b937130135d6
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c551529018bda5ce4f1f7c2fbbebad88a1544151676521feb0bb5fcacc4a48be
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ea46cc06d4376c90836299719c0fb4bdc65e8edfc9fa367d0daa3e7cd3e63e77
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RemcosRAT
+ 1'679 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Link:
https://tria.ge/reports/230302-ap2m3sac9x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
127.0.0.1:59301
10.15.0.19:59301
185.65.134.165:59301
171.22.30.101:59301
Unpacked files
SH256 hash:
d8ec03c34a5f3bd93effeafc2e078ade5df75d468dae5208937c69be4fecfe7f
MD5 hash:
cd4b7952d18e1459bae379e5da7f6afb
SHA1 hash:
e09367a20c19427dae20b53cbe761d1b21272c36
Link:
https://www.unpac.me/results/07c2900a-923a-4230-aa40-4dda7b9518f1/
SH256 hash:
78277d17b48bdbb249d370532cb28411367008fbf963d166fe1a206a91bb0c13
MD5 hash:
fb03b4b3d421e338927ff11c2a86bb6e
SHA1 hash:
a07ca25e638fe4d3c1d3d0c567aa189e90d668f0
Link:
https://www.unpac.me/results/07c2900a-923a-4230-aa40-4dda7b9518f1/
SH256 hash:
008d01b89796000c8c94f4d47fee751b2b07f7aec6c8b5b39e48c33ac2294ac6
MD5 hash:
41fd1404c7db08423f3f74d9d29b1f37
SHA1 hash:
89bc7262b898a04c727d028e45cf9394821d6b17
Link:
https://www.unpac.me/results/07c2900a-923a-4230-aa40-4dda7b9518f1/
SH256 hash:
37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6
MD5 hash:
6c6650082660bff9dc22a7dff8034fb0
SHA1 hash:
86373dafe6bf96c6a751ce27a3d1f4a6056f4031
Link:
https://www.unpac.me/results/07c2900a-923a-4230-aa40-4dda7b9518f1/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/37ebb9622d13/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe 37ebb9622d13e5e8db8d9fa58aef6cfe9278877a18357a91a65022130892f8a6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/370989/

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