MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d
SHA3-384 hash: 385445397d79d8b6f08f35dd62b4e00d5813abf154c2bdafbb48a96e655dbde6ab836197933dc80295a3a0fcd50fffdf
SHA1 hash: 6d8147c5a49f5b4849d35da4d198e5c88aa089a3
MD5 hash: 7f644a8540b4d5295f8238f979e1fb53
humanhash: bluebird-papa-salami-edward
File name:Halkbank_Ekstre_20220522_073809_405251.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:753'152 bytes
First seen:2022-05-25 08:07:34 UTC
Last seen:2022-05-25 09:48:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'603 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:jGWGZFF48m7YEAtaOIdBwzrQ3d4F2Cmh5xSkqWK3XAjD9q6JCsOL6wnBU+RKFq6M:d9gdzMwDmh5xS1DHgALKFq
Threatray 17'034 similar samples on MalwareBazaar
TLSH T1ADF4F19C3650B2DFC877D8369EA82C54AA31B567971BD207A01301ADE94E6E3CF205F3
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 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter abuse_ch
Tags:AgentTesla exe geo Halkbank TUR

Intelligence

File Origin
# of uploads :
3
# of downloads :
281
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
Halkbank_Ekstre_20220522_073809_405251.exe
Verdict:
Malicious activity
Analysis date:
2022-05-25 10:15:18 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/fe5ddf2c-ee5e-460f-a090-0f1d3a194a78

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/274406/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/628de3e3054dcf0ecaebb29f/reports/539ac623-fc2f-417c-bf02-20cb14360760/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/23215e4a-a7cd-4539-b9ea-35aca970e5c0
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1001366
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
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
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)
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 harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 633857 Sample: Halkbank_Ekstre_20220522_07... Startdate: 25/05/2022 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for dropped file 2->37 39 10 other signatures 2->39 7 Halkbank_Ekstre_20220522_073809_405251.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\...\zzsUAYHyIK.exe, PE32 7->23 dropped 25 C:\Users\...\zzsUAYHyIK.exe:Zone.Identifier, ASCII 7->25 dropped 27 C:\Users\user\AppData\Local\Temp\tmpCBB.tmp, XML 7->27 dropped 29 Halkbank_Ekstre_20...3809_405251.exe.log, ASCII 7->29 dropped 41 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->41 43 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->43 45 Uses schtasks.exe or at.exe to add and modify task schedules 7->45 47 Adds a directory exclusion to Windows Defender 7->47 11 Halkbank_Ekstre_20220522_073809_405251.exe 15 2 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 dnsIp7 31 api.telegram.org 149.154.167.220, 443, 49751 TELEGRAMRU United Kingdom 11->31 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->49 51 Tries to steal Mail credentials (via file / registry access) 11->51 53 Tries to harvest and steal ftp login credentials 11->53 55 Tries to harvest and steal browser information (history, passwords, etc) 11->55 19 conhost.exe 15->19         started        21 conhost.exe 17->21         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-25 06:50:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
23 of 41 (56.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ws5hggdeicnmfbmcnab2exrgdwh4xfty32hf6gs2lsthc2zsh6gq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
16dc7f82ad30da1bc6aaaf0832bef80524250e96998149e10e30e94ad4856bd3
AgentTesla
5bf9f321e795da8caa68cef487b457a673fc98aca56cbbcf70fdf7f180d32ec9
AgentTesla
74a11cea013de11b64fe3bd8a207d14d1cf0d918d3156c418c0d6be1af2bc0c6
AgentTesla
7fc137141d5124b904033d6759f3897a5239ddf09634d7ffdc5e5da4c173507d
AgentTesla
8283b086fa3d9a467712bb2bc822d2db194db33d49bd4a89d120283f9723461c
AgentTesla
930dc71a058adf247b2595c096e7119da32194ae3888c24c14a066db0e8689b9
AgentTesla
9d60afaec2fc81f295ceb835fde3331246eddc71d5a5750e9b1a47038ef0b546
AgentTesla
b0d6b2cec2929e32f2c8b1ac138fa95e3d2364c9e8020b929983c212e51aa6f0
AgentTesla
be9d206f59c3a70e7f05478ed8ec3ffe6b5fe08ce1c34cc8da65a5c30e4befd1
AgentTesla
d71cf7a62479b0575847eeafd4acf947866a82dba4614ea9cd9493a8f59a85b3
AgentTesla
+ 17'024 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/220525-j1jq3sdbak/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
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
Checks computer location settings
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/bot5274764738:AAFFTiFwwtsPtMMsc2DMT-nclsK2fyCTBS4/sendDocument
Unpacked files
SH256 hash:
7f172099eb7e8a266b7f47486e6461fa153b9269f87e110a43ac2775d8f12626
MD5 hash:
9e77dc0e2ff220cb01acf2e340b63b27
SHA1 hash:
57055e8bbb99220f3dcfb7a887460e4a060d9c2a
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
SH256 hash:
7fde7eb0fdb3d7337b52112fc637ee80f0c2d86ce1a4e949d19850e202d8829b
MD5 hash:
f336c8a5cf941576a90faff005624387
SHA1 hash:
43a9d97612fc5eceff321e88572e14803c4426b3
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
SH256 hash:
30a7b92badec5075bd84ae35231a77abbc6413db1790343f1ddd892d0387c225
MD5 hash:
71adfbde90097ec91701694a5905101d
SHA1 hash:
1e46d364ed677d63d15b50496d71ce721a824712
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
SH256 hash:
e834cff369a9ea17efd744967651abbc4ee53c839bf4db845dc8a08a15830f2a
MD5 hash:
2c9b4bce9be60a391ecd48e250f78731
SHA1 hash:
e015fb46b059c00b0f1cd852cadd63d27c84bbf1
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
SH256 hash:
c720d8d87e5744ef459c160ae3ae85984519c5cee89d4acd3d4156f929ebcca2
MD5 hash:
86f922d84e1b89f646bc23cb3d878a9c
SHA1 hash:
b61f4401c1a144d704988cf4e55dd9a71f8d8263
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
SH256 hash:
b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d
MD5 hash:
7f644a8540b4d5295f8238f979e1fb53
SHA1 hash:
6d8147c5a49f5b4849d35da4d198e5c88aa089a3
Link:
https://www.unpac.me/results/ec85fc8d-729d-4a9e-9f95-4871d260f719/
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/b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d

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: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

AgentTesla

Executable exe b4ba731864409ac285826803a25e261d8fcb9678de8e5f1a5a5ca6716b323f8d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/274406/

Comments