MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06. 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


AveMariaRAT


Vendor detections: 7


Intelligence 7 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06
SHA3-384 hash: 8f6ed1e492442245d239576c05e8190b677f3460c970f5c1df82b30d263c99ee0fe5289a24a43e8e245e4fbc80ca05ad
SHA1 hash: 184ccb14f7ae93a37a0fa41ce68247733aea5c1c
MD5 hash: e685b540c70cd76627afde093ac66866
humanhash: eighteen-island-blue-three
File name:DocumentoNota Cobrança IMI (FFPT-2019223912003).exe
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:933'832 bytes
First seen:2020-10-06 18:22:57 UTC
Last seen:2020-10-06 19:14:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:NHCK/nWWYXgM5eRfJ+xpyVKhiXqIjnb2zH7pMgky8QEA9x1dN0Tjvf8EU++35kQO:NHCK/nrf8w4CQT5mik7V
Threatray 449 similar samples on MalwareBazaar
TLSH A715153A6A26A403E4DF7174DC104C64837E68ABFF3041A534EE350F976D2E5A952AF3
Reporter abuse_ch
Tags:AveMariaRAT exe geo PRT RAT


Avatar
abuse_ch
Malspam distributing AveMariaRAT:

HELO: h22.megalink.com
Sending IP: 200.75.160.22
From: Viactt | ctt.pt <no-reply@posta.hu>
Subject: ViaCTT - Recebeu novo(s) documento(s) na Caixa Postal Eletrónica
Attachment: DocumentoNota Cobrança IMI (FFPT-2019223912003).arj (contains "DocumentoNota Cobrança IMI (FFPT-2019223912003).exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/68665/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a UDP request
Adding an access-denied ACE
Creating a file
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
Unauthorized injection to a system process
Result
Threat name:
AveMaria
Create hunting rule
Detection:
malicious
Classification:
phis.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/483211
Signature
Binary contains a suspicious time stamp
Contains functionality to hide user accounts
Contains functionality to steal Chrome passwords or cookies
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Increases the number of concurrent connection per server for Internet Explorer
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 dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AveMaria stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 294069 Sample: DocumentoNota Cobran#U00e7a... Startdate: 06/10/2020 Architecture: WINDOWS Score: 100 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for dropped file 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 8 other signatures 2->65 7 DocumentoNota Cobran#U00e7a IMI (FFPT-2019223912003).exe 3 4 2->7         started        11 DocumentoNota Cobran#U00e7a IMI (FFPT-2019223912003).exe 2->11         started        13 DocumentoNota Cobran#U00e7a IMI (FFPT-2019223912003).exe 2 2->13         started        15 3 other processes 2->15 process3 file4 51 DocumentoNota Cobr...-2019223912003).exe, PE32 7->51 dropped 53 DocumentoNota Cobr...exe:Zone.Identifier, ASCII 7->53 dropped 75 Creates an undocumented autostart registry key 7->75 77 Writes to foreign memory regions 7->77 79 Hides threads from debuggers 7->79 17 aspnet_state.exe 3 4 7->17         started        21 WerFault.exe 23 9 7->21         started        23 timeout.exe 1 7->23         started        81 Creates autostart registry keys with suspicious names 11->81 83 Creates multiple autostart registry keys 11->83 85 Injects a PE file into a foreign processes 11->85 25 timeout.exe 11->25         started        27 timeout.exe 1 13->27         started        35 3 other processes 13->35 29 timeout.exe 15->29         started        31 timeout.exe 15->31         started        33 timeout.exe 15->33         started        signatures5 process6 dnsIp7 55 178.170.138.163, 4554, 49741 ETOP-ASPL Netherlands 17->55 67 Tries to steal Mail credentials (via file access) 17->67 69 Contains functionality to steal Chrome passwords or cookies 17->69 71 Tries to harvest and steal browser information (history, passwords, etc) 17->71 73 2 other signatures 17->73 57 192.168.2.1 unknown unknown 21->57 37 conhost.exe 23->37         started        39 conhost.exe 25->39         started        41 conhost.exe 27->41         started        43 conhost.exe 29->43         started        45 conhost.exe 31->45         started        47 conhost.exe 33->47         started        49 WerFault.exe 35->49         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2020-10-06 14:50:32 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=za4nu42g47ztop47dkcka46cjd3yl2bl4sg3s6onwm4umbac3yda._file
Verdict:
malicious
Label(s):
avemaria
Create hunting rule
Similar samples:
18ec681c471f185edf3ab8e23b52b4ea2a87162f9957b4d5d10ac0e2bc008405
AveMariaRAT
578df50c34d2f8f3146e5c4a457c4e9eac639070d3766ba202c84af6a790d4a7
AveMariaRAT
5b92d7f869973b50de0c707ce58afacd6f1202364283c7dffa6ffd79a41a93eb
AveMariaRAT
799b8151e38b9c2557d9ec426c529ff1f394541bd3a6be52c2df06015eba39dd
AveMariaRAT
7fa4e7e851fd8997ceb6a4b87912523dd682387f70eb840afc01806e08c26c2f
AveMariaRAT
d30b949fc05b15b611b3fe420b6883062c5bb2b270c769540c48f703a46cbbf3
AveMariaRAT
df6b12e28602092e6841be50355a76684b5333b236cf9b8441dd73fc1abbf4ae
AveMariaRAT
e0e3ae47b7e48c3c81724d0a63f5f6f8033bb516d97c538ea52349a102a0e1b6
AveMariaRAT
e9ef69bd0b38ec9381f02d44dd893c75ac6c1e6a96f4e320416636860d05d398
AveMariaRAT
fc4b29f54e0b3ed0493ba85310a2665ab47e5143f3cb3ce09686f0560dd1ed04
AveMariaRAT
+ 439 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence
Link:
https://tria.ge/reports/201006-bql91revys/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Modifies WinLogon for persistence
Suspicious use of NtCreateProcessExOtherParentProcess
Unpacked files
SH256 hash:
c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06
MD5 hash:
e685b540c70cd76627afde093ac66866
SHA1 hash:
184ccb14f7ae93a37a0fa41ce68247733aea5c1c
Link:
https://www.unpac.me/results/72abc1aa-a723-41f9-b0af-748705707779/
SH256 hash:
ac2e790339fc2e3321f8a6654c12243dfa55b00edfe016ad59d34587a4d349d0
MD5 hash:
7d28dd3dfcb204e15dd63099f727aa76
SHA1 hash:
9cff5553c551df7073b33e065bea8daeed821013
Link:
https://www.unpac.me/results/72abc1aa-a723-41f9-b0af-748705707779/
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/c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06

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:Cobalt_functions
Create hunting rule
Author:@j0sm1
Description:Detect functions coded with ROR edi,D; Detect CobaltStrike used by differents groups APT
Rule name:Codoso_Gh0st_1
Create hunting rule
Author:Florian Roth
Description:Detects Codoso APT Gh0st Malware
Reference:https://www.proofpoint.com/us/exploring-bergard-old-malware-new-tricks
Rule name:Codoso_Gh0st_2
Create hunting rule
Author:Florian Roth
Description:Detects Codoso APT Gh0st Malware
Reference:https://www.proofpoint.com/us/exploring-bergard-old-malware-new-tricks
Rule name:MAL_Envrial_Jan18_1
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:RDPWrap
Create hunting rule
Author:@bartblaze
Description:Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:https://github.com/stascorp/rdpwrap
Rule name:win_ave_maria_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

AveMariaRAT

arj 3b42acf9ca31858d0add648edbb6161182df8c42eaa3d1bc2a4efbf52da344dc

AveMariaRAT

Executable exe c838da7346e7f3373f9f1a84a073c248f785e82be48db979cdb339460402de06

(this sample)

  
Dropped by
MD5 4489fd37c65d9c09b175fbe1352969a9
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/68665/
  
Dropped by
SHA256 3b42acf9ca31858d0add648edbb6161182df8c42eaa3d1bc2a4efbf52da344dc

Comments