MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309
SHA3-384 hash: 6977281e80adc1b833d4c9b192abdd02d578e3dec16b785906932d1531a8809d4ff56bff9d3fb1b41547d83ad9c6c26c
SHA1 hash: 0923b3c19a178a797e7dcf784c9060338d0dedef
MD5 hash: 8a1e832674033cb7fdd73a8cf55971fd
humanhash: thirteen-helium-burger-video
File name:file
Download: download sample
Signature AgentTesla
Create hunting rule
File size:328'888 bytes
First seen:2023-05-31 16:50:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:aYa6rlD/7B6uUhmwYAzSE2lBPp5zp6HB+NO1cTUX9VAMh1+Lxwr:aY1Rt6uUmxTlp5zpogqhMx4
Threatray 3'226 similar samples on MalwareBazaar
TLSH T15064124435C8C417C9265731ADB9DAFAAFE89D02D8A58F4B17E06F2B7971386C90E313
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter jstrosch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
276
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-05-31 16:51:37 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/db1a0b61-50c1-4813-b3f7-075a0377eaa5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XorStringsNET
Create hunting rule
Link:
https://www.capesandbox.com/analysis/394143/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.22806.6705.12407.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Reading critical registry keys
DNS request
Sending a custom TCP request
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/88847/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64777af8907fc4bd95dd0d2d/reports/1b2ea83e-2410-440d-88d0-1f423cc88643/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4ec154af-7d04-4949-981f-af0d0df472e7
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1246308
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 879328 Sample: file.exe Startdate: 31/05/2023 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 3 other signatures 2->52 6 nnwsscxxh.exe 19 2->6         started        10 file.exe 1 21 2->10         started        12 nnwsscxxh.exe 19 2->12         started        process3 file4 22 C:\Users\user\AppData\Local\...\nsp49F2.tmp, COM 6->22 dropped 24 C:\Users\user\AppData\Local\...\plbwit.dll, PE32 6->24 dropped 54 Antivirus detection for dropped file 6->54 56 Detected unpacking (changes PE section rights) 6->56 58 Detected unpacking (creates a PE file in dynamic memory) 6->58 60 Machine Learning detection for dropped file 6->60 14 nnwsscxxh.exe 7 6->14         started        26 C:\Users\user\AppData\...\nnwsscxxh.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\Local\...\plbwit.dll, PE32 10->28 dropped 30 C:\Users\user\AppData\Local\...\nst143C.tmp, COM 10->30 dropped 62 Detected unpacking (overwrites its own PE header) 10->62 64 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->64 66 Maps a DLL or memory area into another process 10->66 18 file.exe 7 10->18         started        32 C:\Users\user\AppData\Local\...\plbwit.dll, PE32 12->32 dropped 34 C:\Users\user\AppData\Local\...\nst6C7E.tmp, COM 12->34 dropped 20 nnwsscxxh.exe 7 12->20         started        signatures5 process6 dnsIp7 36 mail.jewelryprototyping.it 14->36 38 192.168.2.1 unknown unknown 14->38 40 jewelryprototyping.it 85.234.151.49, 49720, 49721, 49722 SIMPLYTRANSITGB United Kingdom 18->40 42 mail.jewelryprototyping.it 18->42 68 Installs a global keyboard hook 18->68 44 mail.jewelryprototyping.it 20->44 70 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->70 72 Tries to steal Mail credentials (via file / registry access) 20->72 74 Tries to harvest and steal browser information (history, passwords, etc) 20->74 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309/
Threat name:
Win32.Trojan.Xorstringsnet
Create hunting rule
Status:
Malicious
First seen:
2023-05-31 16:51:06 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xomsaizbnklshwivpswl4pzn5scgsaxkztqbejzu2yirzbpommeq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 3'216 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230531-vcs6dsgb74/
Behaviour
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
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
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
AgentTesla
Unpacked files
SH256 hash:
bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309
MD5 hash:
8a1e832674033cb7fdd73a8cf55971fd
SHA1 hash:
0923b3c19a178a797e7dcf784c9060338d0dedef
Link:
https://www.unpac.me/results/3040d143-d5aa-48b1-bb20-f748e5aa5a8b/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb992023216a/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/bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309

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_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:MSIL_SUSP_OBFUSC_XorStringsNet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
Reference:https://github.com/dr4k0nia/yara-rules
Rule name:msil_susp_obf_xorstringsnet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
Rule name:pe_imphash
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

Web download

AgentTesla

Executable exe bb992023216a9723d9157cacbe3f2dec846902eacce0122734d6111c85ee6309

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/394143/
  
URLhaus
https://urlhaus.abuse.ch/url/2648564/

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