MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3781825b53e1bcc9ba8bd6790b399bda60bfc588e980670c54b98b852d639d94. 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 1 File information Comments
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SHA256 hash: 3781825b53e1bcc9ba8bd6790b399bda60bfc588e980670c54b98b852d639d94
SHA3-384 hash: 713e25727664cb67c5f859af6c5c0f67357b7120607b68710702a98764f2de6b755111dd918e53d26869c0e3211644b5
SHA1 hash: 9ff276fb9754f876cbbce3ca4f69b40c368e86e3
MD5 hash: 8206b546d135a6cd1c6c4515accc4219
humanhash: oscar-victor-mockingbird-one
File name:ADJUNTO_EXTRACTO_256728330978625955057149_1059671258198438428245220_479639936823168180923985_7125545135786632657046_pdf.
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:136'704 bytes
First seen:2021-04-27 08:32:46 UTC
Last seen:2021-04-27 10:13:50 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 1536:Az0x7GN4Mc893m5j66625rHcAlzM1KonIwKg3o4OrS1zf23B9Yu98A5yNCB0H:a0JGSO3yj66BHcoWhn8g3o4yysBK
Threatray 1'920 similar samples on MalwareBazaar
TLSH 0BD33AB8FC48F531C2D90FB99013C47812FDDBB51C605544A0B06B6DCBAAA9AB875CF6
Reporter abuse_ch
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d9b1aade-bbea-4e72-a444-8ab4e7010284
Verdict:
Malicious activity
Analysis date:
2021-04-27 08:55:02 UTC
Tags:
trojan dtloader loader rat remcos keylogger
Link:
https://app.any.run/tasks/8401bef7-8a95-4415-9100-85ffcad40e04

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/144495/
Detection(s):
SecuriteInfo.com.Artemis8206B546D135.8256.24018.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Creating a file
Moving a recently created file
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Launching a service
Sending a UDP request
Deleting a recently created file
Launching a process
Running batch commands
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a window
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding exclusions to Windows Defender
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:
Malicious Packer
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d26c8efb-5d99-4f71-af63-49f68f95c81e
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/698755
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Found malware configuration
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 398296 Sample: 32657046_pdf Startdate: 27/04/2021 Architecture: WINDOWS Score: 100 69 databasepropersonombrecomercialideasearchwords.services 2->69 77 Multi AV Scanner detection for domain / URL 2->77 79 Found malware configuration 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 9 other signatures 2->83 10 32657046_pdf.exe 21 13 2->10         started        15 PxxoServicesTrialNet1.exe 2->15         started        17 PxxoServicesTrialNet1.exe 2->17         started        signatures3 process4 dnsIp5 71 ldvamlwhdpetnyn.ml 104.21.85.176, 49712, 49737, 49738 CLOUDFLARENETUS United States 10->71 57 C:\Users\user\AppData\...\k3e225ru.newcfg, ASCII 10->57 dropped 59 C:\Users\user\AppData\...\eaqsbu2e.newcfg, XML 10->59 dropped 61 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 10->61 dropped 85 Contains functionality to steal Chrome passwords or cookies 10->85 87 Contains functionality to capture and log keystrokes 10->87 89 Contains functionality to inject code into remote processes 10->89 93 3 other signatures 10->93 19 32657046_pdf.exe 4 5 10->19         started        22 WerFault.exe 23 9 10->22         started        24 cmd.exe 1 10->24         started        28 2 other processes 10->28 63 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 15->63 dropped 91 Hides threads from debuggers 15->91 65 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 17->65 dropped 26 AdvancedRun.exe 17->26         started        file6 signatures7 process8 file9 51 C:\Users\user\...\PxxoServicesTrialNet1.exe, PE32 19->51 dropped 53 PxxoServicesTrialN...exe:Zone.Identifier, ASCII 19->53 dropped 30 wscript.exe 19->30         started        55 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 22->55 dropped 32 conhost.exe 24->32         started        34 timeout.exe 1 24->34         started        36 AdvancedRun.exe 26->36         started        38 AdvancedRun.exe 28->38         started        40 conhost.exe 28->40         started        process10 process11 42 cmd.exe 30->42         started        process12 44 PxxoServicesTrialNet1.exe 42->44         started        49 conhost.exe 42->49         started        dnsIp13 73 192.168.2.1 unknown unknown 44->73 75 ldvamlwhdpetnyn.ml 44->75 67 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 44->67 dropped 95 Multi AV Scanner detection for dropped file 44->95 97 Machine Learning detection for dropped file 44->97 99 Hides threads from debuggers 44->99 101 Injects a PE file into a foreign processes 44->101 file14 signatures15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3781825b53e1bcc9ba8bd6790b399bda60bfc588e980670c54b98b852d639d94/
Threat name:
ByteCode-MSIL.Trojan.Foold
Create hunting rule
Status:
Malicious
First seen:
2021-04-27 08:33:12 UTC
AV detection:
5 of 47 (10.64%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g6ayew2t4g6mtoul2z4qwom33jql7rmi5gagodcuxgfyklldtwka._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0769c1487705fd65aeacdd813882e532d3bbd4ffa7106a2015bac448d8091bbb
RemcosRAT
4579780c18fb273fd0884237c7a4021dbbb38494194d8c1840449e8a62d29251
RemcosRAT
4fe8c8398a6cf30cfd7cbed590de821abdb40aa177781c43c19bdfec75308355
RemcosRAT
522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
RemcosRAT
622a12c9935eb8f0cfa499bb445642a837fa150a161e5393f7a1d759e6f94f02
RemcosRAT
833b575dac3a049ede0d27e2ff801d2e8d647cf04006f0037e1a9c71d7c8ace4
RemcosRAT
ab9041fe7e0a4a439521d6eb01cc16d74c00a0427c86b067120ac453ba7329d9
RemcosRAT
c39bdd8f7c69c3140ef920e2b1d5965310058c5fa425b871f4d7751d8291d55e
RemcosRAT
cee5cdde8972799268ab97a77880793470dfc0d93c5e697bb66f83b6675f51ba
RemcosRAT
e0d4ce0316734fce0ea0d950f0ff1b4182f1364d581c549a199ac041cfe68ebb
RemcosRAT
+ 1'910 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos evasion persistence rat trojan
Link:
https://tria.ge/reports/210427-tyvngmetdx/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Windows security modification
Executes dropped EXE
Nirsoft
Modifies Windows Defender Real-time Protection settings
Remcos
Turns off Windows Defender SpyNet reporting
Windows security bypass
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:3521
Unpacked files
SH256 hash:
3781825b53e1bcc9ba8bd6790b399bda60bfc588e980670c54b98b852d639d94
MD5 hash:
8206b546d135a6cd1c6c4515accc4219
SHA1 hash:
9ff276fb9754f876cbbce3ca4f69b40c368e86e3
Link:
https://www.unpac.me/results/77254e38-7da5-405b-8f9a-852530641747/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/3781825b53e1bcc9ba8bd6790b399bda60bfc588e980670c54b98b852d639d94

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

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/144495/

Comments