MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23. 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


AgentTesla


Vendor detections: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23
SHA3-384 hash: db6d259ab5243a348fb2b2736986910087a4c91a25dbf61a3d333198cbaa8f4eea4668feec1ffffc49d3c831efd49265
SHA1 hash: 0b521657fb9186a6ed9069e00bf1a24290f5b62c
MD5 hash: 804343f4452677f4907a2bf036c0002c
humanhash: winner-one-floor-eleven
File name:vbc.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:612'864 bytes
First seen:2022-08-15 15:41:39 UTC
Last seen:2022-08-15 16:49:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:hqDpV6cuacJAldPn1HuY/ZaL6LgE2lQOGBki:hqDm8ld/1OY/oLsOQOGB9
TLSH T11AD4391167F8C62BE1AE27B1E1B009040BF9E656F67AEB4F18C864E50D837119D09B7F
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 71f0e4e4d0f0f030 (1 x AgentTesla)
Reporter pr0xylife
Tags:AgentTesla exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
263
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
shipping.doc
Verdict:
Malicious activity
Analysis date:
2022-08-15 15:49:27 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/9b3a64c0-de99-4da0-aa76-078dfb5838cb

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/298729/
Detection(s):
SecuriteInfo.com.MSIL.Downloadergen8.19600.1586.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Creating a file in the %temp% directory
Reading critical registry keys
Creating a process from a recently created file
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Sending a TCP request to an infection source
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a recently created process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed vbc.exe
Link:
https://www.filescan.io/uploads/62fa69c5e4e65a67c4ab9232/reports/75f8eadd-4fb0-4d31-84da-d853666c6dd3/overview
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/33cf2d53-0bb8-4a0e-bcf5-c01619f9c6a6
Result
Threat name:
AgentTesla, AsyncRAT, Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1051834
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
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 Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 684341 Sample: vbc.exe Startdate: 15/08/2022 Architecture: WINDOWS Score: 100 48 ptbci.co.id 2->48 50 mail.ptbci.co.id 2->50 66 Snort IDS alert for network traffic 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Antivirus detection for URL or domain 2->70 72 10 other signatures 2->72 8 vbc.exe 16 7 2->8         started        13 Xkpsfrhw.exe 14 3 2->13         started        signatures3 process4 dnsIp5 54 garage891.com 103.157.146.2, 49738, 49793, 49824 TWIDC-AS-APTWIDCLimitedHK unknown 8->54 56 192.168.2.1 unknown unknown 8->56 42 C:\Users\user\AppData\...\Xkpsfrhw.exe, PE32 8->42 dropped 44 C:\Users\...\Xkpsfrhw.exe:Zone.Identifier, ASCII 8->44 dropped 46 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 8->46 dropped 74 Encrypted powershell cmdline option found 8->74 76 Writes to foreign memory regions 8->76 78 Injects a PE file into a foreign processes 8->78 15 InstallUtil.exe 2 18 8->15         started        20 powershell.exe 15 8->20         started        22 InstallUtil.exe 8->22         started        24 powershell.exe 13->24         started        file6 signatures7 process8 dnsIp9 58 mail.mastercoa.co 213.152.161.40, 10174, 49770, 49772 GLOBALLAYERNL Netherlands 15->58 60 geoplugin.net 178.237.33.50, 49780, 80 ATOM86-ASATOM86NL Netherlands 15->60 40 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32 15->40 dropped 62 Maps a DLL or memory area into another process 15->62 64 Installs a global keyboard hook 15->64 26 InstallUtil.exe 1 15->26         started        29 InstallUtil.exe 15->29         started        31 InstallUtil.exe 15->31         started        37 23 other processes 15->37 33 conhost.exe 20->33         started        35 conhost.exe 24->35         started        file10 signatures11 process12 dnsIp13 80 Tries to steal Instant Messenger accounts or passwords 26->80 82 Tries to steal Mail credentials (via file / registry access) 26->82 52 garage891.com 37->52 84 Tries to harvest and steal browser information (history, passwords, etc) 37->84 signatures14
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23/
Threat name:
Win32.Trojan.RealProtect
Create hunting rule
Status:
Malicious
First seen:
2022-08-15 15:42:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6fy6xir7mx4zzve4vjgyjynnynbjcacxhxsuavjusiv4pbg5burq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:remcos botnet:remotehost collection keylogger persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/220815-s5cb8sfdd8/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
AgentTesla
Remcos
Malware Config
C2 Extraction:
mail.mastercoa.co:10174
Unpacked files
SH256 hash:
f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23
MD5 hash:
804343f4452677f4907a2bf036c0002c
SHA1 hash:
0b521657fb9186a6ed9069e00bf1a24290f5b62c
Link:
https://www.unpac.me/results/dd99a35d-4cdc-4092-8175-44875c650581/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23

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_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

AgentTesla

Executable exe f171eba23f65f99cd49caa4d84e1adc3429100573de5405534922bc784dd0d23

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2273017/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/298729/

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