MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2
SHA3-384 hash: 6515ac702ee43bfd62626ea2465f297bac0fd3517732f240a36168405584c0d11b43b73f9c63de40024cabd5a9a48ff9
SHA1 hash: 3c8e9271e6eae83788c36874ec7e15c780bc6a77
MD5 hash: 2ff3c88cc079f50ba0000d386f8f208f
humanhash: kitten-crazy-kentucky-arkansas
File name:2ff3c88cc079f50ba0000d386f8f208f
Download: download sample
Signature AgentTesla
Create hunting rule
File size:302'068 bytes
First seen:2023-03-13 10:19:50 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:/Ya6RYWU4NPB0erIvWmDVUzlB6TANcHDveE1uj0DHfqXG:/Yz1zNierIeUVq6YcHxckfqXG
Threatray 1'340 similar samples on MalwareBazaar
TLSH T1C9541205A778C543E8920DB308394F6E77B3C62131EB971F13818B6D7E572A2D9197A3
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
docs.xls
Verdict:
Malicious activity
Analysis date:
2023-03-13 09:41:35 UTC
Tags:
exploit cve-2017-11882 loader
Link:
https://app.any.run/tasks/3a9582a7-a67f-4f41-a9ab-c9a9d4addca4

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/373977/
Detection(s):
SecuriteInfo.com.Variant.Zusy.452601.355.26309.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/72933/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/640ef8dde746e0a329daa125/reports/8e83a9e7-ebe1-43b1-b400-99d61c585f21/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bd547979-d095-43aa-aefc-9c429f8d6467
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1192383
Signature
Detected unpacking (creates a PE file in dynamic memory)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
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)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 825281 Sample: cnIGEMvA62.exe Startdate: 13/03/2023 Architecture: WINDOWS Score: 100 49 Snort IDS alert for network traffic 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 Yara detected Telegram RAT 2->53 55 3 other signatures 2->55 7 cnIGEMvA62.exe 19 2->7         started        10 pyienjscxh.exe 2->10         started        13 pyienjscxh.exe 2->13         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\aihaah.exe, PE32 7->31 dropped 15 aihaah.exe 1 2 7->15         started        63 Multi AV Scanner detection for dropped file 10->63 19 WerFault.exe 10 10->19         started        21 WerFault.exe 4 10 13->21         started        signatures5 process6 file7 33 C:\Users\user\AppData\...\pyienjscxh.exe, PE32 15->33 dropped 41 Multi AV Scanner detection for dropped file 15->41 43 Detected unpacking (creates a PE file in dynamic memory) 15->43 45 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->45 47 4 other signatures 15->47 23 aihaah.exe 15 2 15->23         started        27 aihaah.exe 15->27         started        29 aihaah.exe 15->29         started        signatures8 process9 dnsIp10 35 api4.ipify.org 64.185.227.155, 443, 49697 WEBNXUS United States 23->35 37 api.telegram.org 149.154.167.220, 443, 49702 TELEGRAMRU United Kingdom 23->37 39 api.ipify.org 23->39 57 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->57 59 Tries to steal Mail credentials (via file / registry access) 23->59 61 Tries to harvest and steal browser information (history, passwords, etc) 23->61 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2/
Threat name:
Win32.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2023-03-13 10:17:40 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jm5s4m3wrmd6jdd3fizoylqpb7gzjmqgefyls5pvgjgxpuubawra._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0007f855c65b913a538d9a7680c5078dcdf8f49e26f37a130ec982c275bb693b
AgentTesla
07a41eff76914977afbfe4bf07f2ef55d2478dd32a439c3979f619679c7a69b3
AgentTesla
51a4fb3b2148da43d34a86a9af619af67ff8611f8bb7448e4edcb9d3207ca1b2
AgentTesla
53de6dc3df86d3fc20194f1720e81fe88dcc42d37777e6016acaba2d8876b921
AgentTesla
6941a5420e23e7309cc09e6ffebf847a7c781dbbb726996a2b3d36340d347819
AgentTesla
d3cde2174f9799d957210cd054bee35f092e5480bb7019ca10e7b7f5abb116bf
AgentTesla
d9ffc57c4f2b13e4623b8de5ff380625f9ad65a62c80e5fb91be0db6861e5992
AgentTesla
fc8c6d3dafa922ac0493c26e96e337563b1beaa46e1725ed1799ac5a46ceabcd
AgentTesla
+ 1'330 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/230313-mc4ywsbh7t/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
Looks up external IP address via web service
Executes dropped EXE
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
Malware Config
C2 Extraction:
https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/
Unpacked files
SH256 hash:
8b6897340984e35dba937364681bd98592594774504daf0a724c843c00b95341
MD5 hash:
3a566b5e883a0c0cdfe09cd5d64bce6f
SHA1 hash:
9cbdec781d7aabbe6286474833877aa6ca030951
Link:
https://www.unpac.me/results/dfd8644b-d173-492b-bc7f-cbdba8fede88/
Parent samples :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 hash:
29af6c348ce30804446ff5ec88fecc907b1b80110f745c3b099af4f138939510
MD5 hash:
07f72f36400b2ba77a09f31b6415ac6c
SHA1 hash:
9873248b0200d884963d2f5c8f28ee0ad5e8a831
Link:
https://www.unpac.me/results/dfd8644b-d173-492b-bc7f-cbdba8fede88/
SH256 hash:
88aa17ff396f40e63bb4f11d4a31a9117204692cd027752da0495fdfb58ff665
MD5 hash:
126173994331f7784faa6b180e5a2132
SHA1 hash:
c5a080d4f2d1e7cd59e02ce6aa3438cf73f7e011
Link:
https://www.unpac.me/results/dfd8644b-d173-492b-bc7f-cbdba8fede88/
SH256 hash:
4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2
MD5 hash:
2ff3c88cc079f50ba0000d386f8f208f
SHA1 hash:
3c8e9271e6eae83788c36874ec7e15c780bc6a77
Link:
https://www.unpac.me/results/dfd8644b-d173-492b-bc7f-cbdba8fede88/
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/4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2

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:pe_imphash
Create hunting rule
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
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 4b3b2e33768b07e48c7b2a32ec2e0f0fcd94b2062170b975f5324d77d28105a2

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2568421/
Cape
Cape
https://www.capesandbox.com/analysis/373977/

Comments


Avatar
zbet commented on 2023-03-13 10:19:54 UTC

url : hxxp://172.245.135.141/GIB.exe