MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: 997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8
SHA3-384 hash: 84b917ef8b8ad09ddda966dbcb2503ed3e3a881d8fd9227b7722964f46c1dd510d3f7834818a864323c03fd5f3c32a82
SHA1 hash: 466939b2544a3cbb7803fe46632ca5adde77cd86
MD5 hash: 9ebee4360ab2d20026f1239ef23cb242
humanhash: william-table-quiet-winner
File name:documents.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:584'192 bytes
First seen:2022-04-02 14:17:31 UTC
Last seen:2022-04-11 12:40:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:x2iD3rUYVMfPa6M8APmfIt1uV22LLZwWXyqMUylRsJrvq0V:5D3aX7M+Ite24wqxylRUDb
Threatray 15'503 similar samples on MalwareBazaar
TLSH T117C4F12E7B96C913CAB856F641D2411103B2A34EB773C79B2DC422CA0E623E76D457DB
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
436
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48786246.10504.25827.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe fareit obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62485b1b1f204239486dc4a6/reports/b8e6782a-b207-49fb-9ee2-a3f62546044a/overview
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/4b7c837f-cae8-4326-83a5-984c1deb7045
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/969419
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 601906 Sample: documents.exe Startdate: 02/04/2022 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 11 other signatures 2->60 7 documents.exe 7 2->7         started        11 wZzDLLs.exe 2 2->11         started        13 wZzDLLs.exe 1 2->13         started        process3 file4 36 C:\Users\user\AppData\Roaming\WBwAEJa.exe, PE32 7->36 dropped 38 C:\Users\user\AppData\Local\...\tmpEA12.tmp, XML 7->38 dropped 40 C:\Users\user\AppData\...\documents.exe.log, ASCII 7->40 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 7->62 64 Writes to foreign memory regions 7->64 66 Allocates memory in foreign processes 7->66 68 2 other signatures 7->68 15 RegSvcs.exe 2 4 7->15         started        20 powershell.exe 25 7->20         started        22 schtasks.exe 1 7->22         started        24 conhost.exe 11->24         started        26 conhost.exe 13->26         started        signatures5 process6 dnsIp7 42 atifnazar.com 212.8.242.106, 49738, 587 WORLDSTREAMNL Netherlands 15->42 44 mail.atifnazar.com 15->44 32 C:\Users\user\AppData\Roaming\...\wZzDLLs.exe, PE32 15->32 dropped 34 C:\Windows\System32\drivers\etc\hosts, ASCII 15->34 dropped 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->46 48 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->48 50 Tries to steal Mail credentials (via file / registry access) 15->50 52 5 other signatures 15->52 28 conhost.exe 20->28         started        30 conhost.exe 22->30         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-02 01:29:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tf3xoeb35n45kqh6fv2yyimdcb7ti2eit6n4dwll7uenwgo3xhea._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0d34612769ca0bec0bda68a9b182b7477107288b8272f855e6e75bd0b330dcdd
AgentTesla
259d1d763c82d506eae39f171eaff8037ac33e5f329b6a546b667734351f068f
AgentTesla
3266cc6c2a2fc1f64000b1ca849da565470cf2bf119fbe377e7ad5234756dba5
AgentTesla
57c38984bd22e15b6b0ae6f05e03159e4f53b18692b2300c098c9094e631146f
AgentTesla
be13445bfc27add23b008bd963fb87dbe131334ae4b627a97f34083fe355eae0
AgentTesla
c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7
AgentTesla
dc5eec99aa11a84baf9db82822e5367fb90f34304a660df4831f6f4cb4979e13
AgentTesla
f5b14397623cd39903f74bb50c9ab799ce36f45bd909218fca2ade16de032656
AgentTesla
+ 15'493 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/220402-rl9mysehd2/
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
Adds Run key to start application
Checks computer location settings
Drops file in Drivers directory
AgentTesla
Unpacked files
SH256 hash:
d3626f623359eab78c9a11ab047986f7bdbbcbbca7191c76c64f16fd890e3e04
MD5 hash:
2854d250a1ecb2a98265bcea1f493392
SHA1 hash:
eca19c1a9338a2a8f7ba3c9032593357e3cd286b
Link:
https://www.unpac.me/results/bf832bde-ca07-4d42-9827-d4c623342b5c/
SH256 hash:
582f75b147b60d2d5308df56cc299cfb5563b1b4e5cd5a9e3e42c2a61ad724b6
MD5 hash:
66abaa7392b10557f1716f1eb4ca976c
SHA1 hash:
d893f04437b08b8be5350cf05d9a313334775fbb
Link:
https://www.unpac.me/results/bf832bde-ca07-4d42-9827-d4c623342b5c/
SH256 hash:
6f9f80780592cea1f132486a46ef7af6194a27890da2cd8ce5d377a7990c199c
MD5 hash:
84bb37394d68a274ee03cbc254dfc2e7
SHA1 hash:
8bd47f3801fc2da35b82f0c5df74e7ae8eee06bc
Link:
https://www.unpac.me/results/bf832bde-ca07-4d42-9827-d4c623342b5c/
SH256 hash:
71764eb60a83a17343af4a26bf3ec546c5ee08454722233fd5cf59693327b1a4
MD5 hash:
bfcf754fb9acba752f79f44817b7be23
SHA1 hash:
01af19456b6f97790973d0d67a97ecc362ab7aed
Link:
https://www.unpac.me/results/bf832bde-ca07-4d42-9827-d4c623342b5c/
SH256 hash:
997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8
MD5 hash:
9ebee4360ab2d20026f1239ef23cb242
SHA1 hash:
466939b2544a3cbb7803fe46632ca5adde77cd86
Link:
https://www.unpac.me/results/bf832bde-ca07-4d42-9827-d4c623342b5c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/997777103beb/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/997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8

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 997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment

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