MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413. 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: 17


Intelligence 17 IOCs YARA 29 File information Comments
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SHA256 hash: c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
SHA3-384 hash: f6df04efe18cef199a2201022856c63c0880333deea89fec56e834053ffdfaafdbdd42631667ffb52cea80acf617b387
SHA1 hash: a5dbce4a633c2d380a9bad5e127d995bf3da1ca1
MD5 hash: 8c2d3a02eb54b53aef76776d8ea541be
humanhash: lima-fix-thirteen-alaska
File name:c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
Download: download sample
Signature RemcosRAT
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File size:920'064 bytes
First seen:2023-12-08 13:52:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:3LdCQmbCpOioJvF/7Tun+u8UYmU+/BIxDi18W9asQCDLPtw7tMXSohs2Y7csYsFw:xmio7TuUUzMeyW9jnrt3k41W0ZsuPZ
Threatray 507 similar samples on MalwareBazaar
TLSH T13C1523A1B78ABA63D13647FE507866001AF476D64024E7C95CE2A0DD0EF2F918355FCB
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 68c4d2d2725a5252 (10 x Formbook, 8 x AgentTesla, 3 x SnakeKeylogger)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
294
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
Remcos
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Link:
https://www.capesandbox.com/analysis/463639/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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SecuriteInfo.com.Trojan.PackedNET.2548.8353.760.UNOFFICIAL
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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
Creating a file
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65731fc1da3178d99cdd0c18/reports/804d7206-79f3-4628-a759-4d1ade1aef52/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/79733c80-224b-4fa0-a9b9-68c8ef74d4db
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/1356286
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
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)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
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: 1356286 Sample: EUu3tNnb1j.exe Startdate: 08/12/2023 Architecture: WINDOWS Score: 100 49 grantadistciaret.com 2->49 51 geoplugin.net 2->51 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Antivirus detection for URL or domain 2->61 63 10 other signatures 2->63 8 EUu3tNnb1j.exe 7 2->8         started        12 zJPRoLzx.exe 5 2->12         started        signatures3 process4 file5 45 C:\Users\user\AppData\Roaming\zJPRoLzx.exe, PE32 8->45 dropped 47 C:\Users\user\AppData\Local\...\tmp1F0C.tmp, XML 8->47 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 8->65 67 Writes to foreign memory regions 8->67 69 Adds a directory exclusion to Windows Defender 8->69 14 vbc.exe 3 13 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        71 Multi AV Scanner detection for dropped file 12->71 73 Injects a PE file into a foreign processes 12->73 24 schtasks.exe 1 12->24         started        26 vbc.exe 12->26         started        signatures6 process7 dnsIp8 53 grantadistciaret.com 91.92.252.51, 3212, 49707, 49709 THEZONEBG Bulgaria 14->53 55 geoplugin.net 178.237.33.50, 49711, 80 ATOM86-ASATOM86NL Netherlands 14->55 81 Contains functionality to bypass UAC (CMSTPLUA) 14->81 83 Tries to steal Mail credentials (via file registry) 14->83 85 Contains functionalty to change the wallpaper 14->85 87 6 other signatures 14->87 28 vbc.exe 14->28         started        31 vbc.exe 14->31         started        33 vbc.exe 14->33         started        43 3 other processes 14->43 35 conhost.exe 18->35         started        37 conhost.exe 20->37         started        39 conhost.exe 22->39         started        41 conhost.exe 24->41         started        signatures9 process10 signatures11 75 Tries to steal Instant Messenger accounts or passwords 28->75 77 Tries to steal Mail credentials (via file / registry access) 28->77 79 Tries to harvest and steal browser information (history, passwords, etc) 31->79
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-11-28 03:48:54 UTC
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y3y662wu33ibchzdezzkgcazskkoxeyyfv6nplgcstykfqwsaqjq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
05d8342057d5c5a482c33f7352412b40e9753ef178fdc4b746a68e8a86acb0e2
RemcosRAT
741b7b64f2a1eb8aca439c9a4c304a90fba48c41c787114b8aced6c3102a5568
RemcosRAT
88c300243b5102cdcf2685203b2469f384d12d0cbd66b49dd479d21b3ceab24d
RemcosRAT
bafc5fae0104b9851797f62ad1d638cf18237782147ff341033d6bfc06e0d5ca
RemcosRAT
cf10f829e15f56c4ac271d8bd9539cbb2482d0c63c2bc2c02f118928b079d74e
RemcosRAT
+ 497 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:grace collection rat
Link:
https://tria.ge/reports/231208-q6gx1abga5/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
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
Uses the VBS compiler for execution
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
grantadistciaret.com:3212
Unpacked files
SH256 hash:
dc2a31ebcef7e1b02ef0b2237da0e126dfebaa6a6336f829c0194b89793e239b
MD5 hash:
3d9dd0ed4f6deb6ad320d84fa5a40542
SHA1 hash:
f2daf79f4bfd1118856e13e1487c99259415d39e
Link:
https://www.unpac.me/results/ebd05b71-549c-4a85-8a3b-81795f084c12/
SH256 hash:
f5a8f5ded618fd3989fa98a3c2d87c4853d6e10ecb1313cd5ddd7df375336b31
MD5 hash:
243f9990bb7d68a3f6e4d3999800da5b
SHA1 hash:
ba555175d12f19f6288a3574738bcd6c8b747e3b
Link:
https://www.unpac.me/results/ebd05b71-549c-4a85-8a3b-81795f084c12/
SH256 hash:
b286fd9eb884d2db8a9eb1fbe0f4f2d5bf9ed906bac14b21b561268a9c46d59d
MD5 hash:
56ac16254a2bb31ac35d724c17d948f6
SHA1 hash:
69bf666c6617a89e7dd9585cbb43f5c539713089
Link:
https://www.unpac.me/results/ebd05b71-549c-4a85-8a3b-81795f084c12/
SH256 hash:
cf0bc44ce17f3691873b5d4b1048d2ee37966fed0d6f9aefe82a63d5e3a44381
MD5 hash:
4c9dcdd5946caffba47fd4218404d384
SHA1 hash:
4f733af9d4a0eef8aa55968c2971f5d6ae1f0f57
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/ebd05b71-549c-4a85-8a3b-81795f084c12/
Parent samples :
db4520e67b7388d613d17e7a0758192feda02f2951e3a3a2f5bd4f2c55efd7a2
cf0bc44ce17f3691873b5d4b1048d2ee37966fed0d6f9aefe82a63d5e3a44381
a1f95947c7d421aef77f87b95744c6a93c149e203af906b32b3e6002f3331cf3
1592a15da607057998d44258e4892bbe0191a9fb4b0f688b9ecb8112016d387d
9fdca9360e25dcfd92011c7aa47c40037cadc4573826b13cfdb8ecf7dc3bb553
48df72d38c4b15ae4c34723fd6b2c8399110aebbf9f4205064901bc2650f2571
bafc5fae0104b9851797f62ad1d638cf18237782147ff341033d6bfc06e0d5ca
d72b9ebc71193849d196a3962f735f5bc49b4be81d099317582f199008580704
88c300243b5102cdcf2685203b2469f384d12d0cbd66b49dd479d21b3ceab24d
c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
788edaf71879b87d34ea6397f6be0c718a67bc8f3ef5a2b32e5b1ad8064a44d0
e32b631a8b82943b24d90088fba052ef7c6bb591b6bd759c71fa7ba8ef63fa63
39a8c585d60201261bad7600af0f3840fcb174fec63263ebf55020e4dedc157c
SH256 hash:
c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413
MD5 hash:
8c2d3a02eb54b53aef76776d8ea541be
SHA1 hash:
a5dbce4a633c2d380a9bad5e127d995bf3da1ca1
Link:
https://www.unpac.me/results/ebd05b71-549c-4a85-8a3b-81795f084c12/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c6f1ef6ad4de/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/c6f1ef6ad4ded0111f232672a308199294eb93182d7cd7acc294f0a2c2d20413

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: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
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
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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:NETexecutableMicrosoft
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.

Cape
Cape
https://www.capesandbox.com/analysis/463639/

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