MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87. 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: 18


Intelligence 18 IOCs YARA 30 File information Comments
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SHA256 hash: d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
SHA3-384 hash: 9e95172cfe868fb58ab621905bb6ea1ff07d3a069929253f8e458e05add424281a2a2da7fd18a37589f89df12eb4c81f
SHA1 hash: 1856e628a3779d775868403692c44afae8f061f0
MD5 hash: 16d59170db4782c9bba800a67dc79644
humanhash: four-dakota-shade-nuts
File name:GK098765000900000.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:872'960 bytes
First seen:2023-12-03 15:15:18 UTC
Last seen:2023-12-03 17:46:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:kSfQzi/Pi+jnpOI2mDhFiR0UMmRtuexCjASZ:kSfAqPiupOyj00Lm3ueojhZ
Threatray 514 similar samples on MalwareBazaar
TLSH T1390523427648BBE9CB7F8FF28994385443F5E40B6A23E25D4C4122EE11B6F109769F27
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter TeamDreier
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
GK098765000900000.bat
Verdict:
Malicious activity
Analysis date:
2023-12-03 15:24:34 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e9a7930e-d1df-4807-a011-7122833041a1

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/462109/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.10383.14495.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Using the Windows Management Instrumentation requests
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed remcos
Link:
https://www.filescan.io/uploads/656c9bd47485e5b1ecc4d03b/reports/ce67e345-c2cb-4791-900e-b125311a6afd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
Result
Verdict:
MALICIOUS
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3180b196-3c01-4db0-8c4f-9d7116714dc7
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1352632
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
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 domain / URL
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
Snort IDS alert for network traffic
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)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
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: 1352632 Sample: GK098765000900000.bat.exe Startdate: 03/12/2023 Architecture: WINDOWS Score: 100 51 geoplugin.net 2->51 57 Snort IDS alert for network traffic 2->57 59 Multi AV Scanner detection for domain / URL 2->59 61 Found malware configuration 2->61 63 13 other signatures 2->63 8 GK098765000900000.bat.exe 7 2->8         started        12 XTRpeYnTwmomU.exe 5 2->12         started        signatures3 process4 file5 47 C:\Users\user\AppData\...\XTRpeYnTwmomU.exe, PE32 8->47 dropped 49 C:\Users\user\AppData\Local\...\tmp9253.tmp, XML 8->49 dropped 65 Tries to steal Mail credentials (via file registry) 8->65 67 Uses schtasks.exe or at.exe to add and modify task schedules 8->67 69 Contains functionality to modify clipboard data 8->69 77 2 other signatures 8->77 14 GK098765000900000.bat.exe 3 13 8->14         started        18 powershell.exe 22 8->18         started        20 powershell.exe 23 8->20         started        28 3 other processes 8->28 71 Multi AV Scanner detection for dropped file 12->71 73 Contains functionality to bypass UAC (CMSTPLUA) 12->73 75 Contains functionalty to change the wallpaper 12->75 79 5 other signatures 12->79 22 schtasks.exe 12->22         started        24 XTRpeYnTwmomU.exe 12->24         started        26 XTRpeYnTwmomU.exe 12->26         started        signatures6 process7 dnsIp8 53 107.175.229.139, 49708, 49710, 8087 AS-COLOCROSSINGUS United States 14->53 55 geoplugin.net 178.237.33.50, 49711, 80 ATOM86-ASATOM86NL Netherlands 14->55 87 Maps a DLL or memory area into another process 14->87 30 GK098765000900000.bat.exe 14->30         started        33 GK098765000900000.bat.exe 14->33         started        35 GK098765000900000.bat.exe 14->35         started        45 4 other processes 14->45 37 conhost.exe 18->37         started        39 conhost.exe 20->39         started        41 conhost.exe 22->41         started        43 conhost.exe 28->43         started        signatures9 process10 signatures11 81 Tries to steal Instant Messenger accounts or passwords 30->81 83 Tries to steal Mail credentials (via file / registry access) 30->83 85 Tries to harvest and steal browser information (history, passwords, etc) 33->85
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-11-22 06:05:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
27 of 37 (72.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2avsn7mjfvjzxey4y2kj4h5k3fkod7v3mkovhgfejorff54bj2dq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
25ad65700d96ab435cbe3070cc5189ade55537add318b907b57fc27b6dcf7110
RemcosRAT
48df72d38c4b15ae4c34723fd6b2c8399110aebbf9f4205064901bc2650f2571
RemcosRAT
72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
RemcosRAT
7d0094638be40437e64bb472a23d920cde1751b266427028175929b3507bacf5
RemcosRAT
9c365f7df9b2bb958a53890dc80a258de1f5ea0781155f7c2b3741b9dd593867
RemcosRAT
db4520e67b7388d613d17e7a0758192feda02f2951e3a3a2f5bd4f2c55efd7a2
RemcosRAT
+ 504 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:john-pc rat
Link:
https://tria.ge/reports/231203-snf9vscf4v/
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:
107.175.229.139:8087
Unpacked files
SH256 hash:
3fc435481d7ef0079bdad4dd86185e61a5092a5df4a3e17a75266cf283effaa1
MD5 hash:
ead80ad88662af6f37f0c49fe6e3fb44
SHA1 hash:
dbeb4019c7337347d1c6d0913c9249021cafd849
Link:
https://www.unpac.me/results/8e123526-60f5-4b2d-95fe-afab772b0237/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/8e123526-60f5-4b2d-95fe-afab772b0237/
SH256 hash:
43433ed63cdb88981fcdc522de7f71a700d59490aaa3d4fcd06f4249791747b2
MD5 hash:
c45bd2b3fa3c078ab7cbbabc6014967d
SHA1 hash:
18be0277557625bddf323b3c30cc3359595e74ce
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
Link:
https://www.unpac.me/results/8e123526-60f5-4b2d-95fe-afab772b0237/
Parent samples :
25ad65700d96ab435cbe3070cc5189ade55537add318b907b57fc27b6dcf7110
72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
7d0094638be40437e64bb472a23d920cde1751b266427028175929b3507bacf5
d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
SH256 hash:
be78b68208d8dbc9b81050269ca47e06b9f33cb8043845a9e1419cc4d6d63ffb
MD5 hash:
2fb101919e85ce482b29fd80e33b0ae9
SHA1 hash:
0fc2cd3b622c1172c827ba9cf98363316aa7d3e7
Link:
https://www.unpac.me/results/8e123526-60f5-4b2d-95fe-afab772b0237/
SH256 hash:
d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
MD5 hash:
16d59170db4782c9bba800a67dc79644
SHA1 hash:
1856e628a3779d775868403692c44afae8f061f0
Link:
https://www.unpac.me/results/8e123526-60f5-4b2d-95fe-afab772b0237/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d02b26fd892d/report/overview.html
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/d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research
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 d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462109/

Comments