MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816
SHA3-384 hash: b5820143d1ef173056821d5ff31e5f704e91459804eac1f81a4dbcf6cafc0a96ed3a4ecb757a664b178b61c28e56ce82
SHA1 hash: 973e9cdaae27067d21bd2ed290ee2fb3139e3f6a
MD5 hash: 2167310bfc6911706be2abfadbb25a07
humanhash: sweet-whiskey-echo-magazine
File name:SERFINANZA_EXTRACTO_9429299304353174728403_23412551137329424487110_9573524169573054383615259_639869929291807056373_pdf.e
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'456'512 bytes
First seen:2021-05-06 07:18:51 UTC
Last seen:2021-05-06 08:15:10 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:f5hlaq0Z9dKSBvcMGT5kpK10Qm68UjGYK1z9SVeUI2tE+aSk4+CJUUXDZZ:f5uq0ZTfkTTSK69IXUIFtLLk4+6UUdZ
Threatray 1'952 similar samples on MalwareBazaar
TLSH 73F5E821CEAFC42CD2FB5EA0978877130A037BF9683624F49A850A59D307D955EF1FA1
Reporter abuse_ch
Tags:e RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
143
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/151399/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.703.30519.30952.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Deleting a recently created file
Sending a UDP request
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 file
Launching the default Windows debugger (dwwin.exe)
Creating a window
DNS request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Connection attempt to an infection source
Adding exclusions to Windows Defender
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/713361
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
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
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 405611 Sample: 056373_pdf.e Startdate: 06/05/2021 Architecture: WINDOWS Score: 100 68 databasepropersonombrecomercialideasearchwords.services 2->68 72 Multi AV Scanner detection for domain / URL 2->72 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 9 other signatures 2->78 12 056373_pdf.exe 6 6 2->12         started        16 PxxoServicesTrialNet1.exe 2->16         started        18 PxxoServicesTrialNet1.exe 2->18         started        signatures3 process4 file5 62 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 12->62 dropped 88 Contains functionalty to change the wallpaper 12->88 90 Contains functionality to steal Chrome passwords or cookies 12->90 92 Contains functionality to capture and log keystrokes 12->92 98 4 other signatures 12->98 20 056373_pdf.exe 12->20         started        23 WerFault.exe 12->23         started        25 cmd.exe 12->25         started        27 5 other processes 12->27 64 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 16->64 dropped 94 Hides threads from debuggers 16->94 96 Injects a PE file into a foreign processes 16->96 66 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 18->66 dropped signatures6 process7 file8 54 C:\Users\user\...\PxxoServicesTrialNet1.exe, PE32 20->54 dropped 56 PxxoServicesTrialN...exe:Zone.Identifier, ASCII 20->56 dropped 29 wscript.exe 20->29         started        58 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 23->58 dropped 31 conhost.exe 25->31         started        33 timeout.exe 25->33         started        35 AdvancedRun.exe 27->35         started        37 conhost.exe 27->37         started        process9 process10 39 cmd.exe 29->39         started        process11 41 PxxoServicesTrialNet1.exe 39->41         started        45 conhost.exe 39->45         started        file12 60 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 41->60 dropped 80 Multi AV Scanner detection for dropped file 41->80 82 Machine Learning detection for dropped file 41->82 84 Adds a directory exclusion to Windows Defender 41->84 86 2 other signatures 41->86 47 AdvancedRun.exe 41->47         started        50 powershell.exe 41->50         started        signatures13 process14 dnsIp15 70 192.168.2.1 unknown unknown 47->70 52 AdvancedRun.exe 47->52         started        process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816/
Threat name:
Win32.Backdoor.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-05-06 07:19:18 UTC
AV detection:
7 of 47 (14.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uencxzkljylldliikfvunwq55v455c32ghsm65jx4inlzyldtala._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0769c1487705fd65aeacdd813882e532d3bbd4ffa7106a2015bac448d8091bbb
RemcosRAT
4579780c18fb273fd0884237c7a4021dbbb38494194d8c1840449e8a62d29251
RemcosRAT
4fe8c8398a6cf30cfd7cbed590de821abdb40aa177781c43c19bdfec75308355
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522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
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622a12c9935eb8f0cfa499bb445642a837fa150a161e5393f7a1d759e6f94f02
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833b575dac3a049ede0d27e2ff801d2e8d647cf04006f0037e1a9c71d7c8ace4
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ab9041fe7e0a4a439521d6eb01cc16d74c00a0427c86b067120ac453ba7329d9
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c39bdd8f7c69c3140ef920e2b1d5965310058c5fa425b871f4d7751d8291d55e
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cee5cdde8972799268ab97a77880793470dfc0d93c5e697bb66f83b6675f51ba
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e0d4ce0316734fce0ea0d950f0ff1b4182f1364d581c549a199ac041cfe68ebb
RemcosRAT
+ 1'942 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/210506-x4t9lz52bs/
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:
09bca6356a55ebd1495404438b39d1f3c775cdb32aecf26d7670a35ab050999e
MD5 hash:
e5109afc939704bbcc99e6609b86d939
SHA1 hash:
cbd9249110bae8a7542fd82d253f9da2003bb164
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/656c926f-59a1-4889-9b0d-cd21393bf30b/
SH256 hash:
fd798baa25ba7519241cab05ad021cb16bf14fc08ada7adba0edc5d920c904e3
MD5 hash:
42388b690c5d32d087e4a6e26c31a250
SHA1 hash:
8d0aa93e2db0c0d20ed0b76c1c58a7225569ed3c
Link:
https://www.unpac.me/results/656c926f-59a1-4889-9b0d-cd21393bf30b/
SH256 hash:
3da80bd8e18bf2ef5e28f5e2e0d2095b0d4e65391800ce18f9a18859d7beb220
MD5 hash:
5dbed7594d4c8d71c1882692e6776bf0
SHA1 hash:
8552a2f2afca501945fe57c1875970b6f777f709
Link:
https://www.unpac.me/results/656c926f-59a1-4889-9b0d-cd21393bf30b/
SH256 hash:
a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816
MD5 hash:
2167310bfc6911706be2abfadbb25a07
SHA1 hash:
973e9cdaae27067d21bd2ed290ee2fb3139e3f6a
Link:
https://www.unpac.me/results/656c926f-59a1-4889-9b0d-cd21393bf30b/
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/a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816

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
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 a11a2be54b4e16b1ad08516b46da1ded79de8b7a31e4cf7537e21abce1639816

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/151399/

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