MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e. 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: 15


Intelligence 15 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e
SHA3-384 hash: 22b6d20998410edf5c4c398d9dddc8a561c02e6bf46cc52b1395caf8dd98d47a024afc6997889dd5c3e5366faf9a45f3
SHA1 hash: 80bbb9b211ec3687ba0f4479ddfad5bd49f7d819
MD5 hash: 91976bda9f4b758dff1dcd990081c88f
humanhash: wisconsin-massachusetts-lion-kitten
File name:CuAWtVjV6H851Ub.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'001'984 bytes
First seen:2023-10-24 08:46:00 UTC
Last seen:2023-10-24 09:03:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:iJXDXAm7I9ie5RXAAXe1IByCAQURcAgJQOBlwQme68:kDX9Je5bXewAjGv6Npez
Threatray 549 similar samples on MalwareBazaar
TLSH T161256E3D19BD123BC169C2B9CFE5D827F000D8AF3522AD6598D797A64352A8735C323E
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter cocaman
Tags:AgentTesla exe QUOTATION

Intelligence

File Origin
# of uploads :
3
# of downloads :
334
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/455925/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6537844dc2a76fbfed3323ac/reports/fc817d21-5874-4660-b67e-d4f77f28f502/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e
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/e44c7982-ccae-4af9-862f-f9da8d9fc088
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1331136
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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 network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1331136 Sample: CuAWtVjV6H851Ub.exe Startdate: 24/10/2023 Architecture: WINDOWS Score: 100 33 mail.wirtschaftsinkaso.com 2->33 35 api4.ipify.org 2->35 37 api.ipify.org 2->37 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus / Scanner detection for submitted sample 2->55 57 9 other signatures 2->57 7 CuAWtVjV6H851Ub.exe 3 2->7         started        10 BsrzRc.exe 3 2->10         started        12 BsrzRc.exe 2 2->12         started        signatures3 process4 signatures5 59 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->59 61 Injects a PE file into a foreign processes 7->61 14 CuAWtVjV6H851Ub.exe 16 5 7->14         started        63 Antivirus detection for dropped file 10->63 65 Multi AV Scanner detection for dropped file 10->65 67 Machine Learning detection for dropped file 10->67 19 BsrzRc.exe 14 2 10->19         started        21 BsrzRc.exe 10->21         started        23 BsrzRc.exe 10->23         started        25 BsrzRc.exe 12->25         started        27 BsrzRc.exe 12->27         started        process6 dnsIp7 39 mail.wirtschaftsinkaso.com 107.174.247.115, 587 AS-COLOCROSSINGUS United States 14->39 41 api4.ipify.org 64.185.227.156, 443, 49738, 49743 WEBNXUS United States 14->41 29 C:\Users\user\AppData\Roaming\...\BsrzRc.exe, PE32 14->29 dropped 31 C:\Users\user\...\BsrzRc.exe:Zone.Identifier, ASCII 14->31 dropped 43 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->43 45 Tries to steal Mail credentials (via file / registry access) 14->45 47 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->47 49 Tries to harvest and steal browser information (history, passwords, etc) 25->49 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2023-10-18 05:56:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
26 of 38 (68.42%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cpetx2x3xcctl5yynaltmj4cqxrvemeranultoe4ysnsd555iwpa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
34c7377e5b187edf6d660e7df34b68b968940b6de1399c2f4a3e5675099139f4
AgentTesla
6af326333d060286daaf29227b41f2afb25c43f072571a096c504c84e61749d3
AgentTesla
7317ce7a3ef968e23d55fc137f133f26864a6efc47dc1f10896ab6c4cf67ada2
AgentTesla
7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92
AgentTesla
c7917d3ebb2c276113548fdfc4dec0b4db97145b9e687d3177248f1b675800fc
AgentTesla
cb42b7fe8e4b91d233ed1755f6ac5e83d6d2d44f1320a55c88d034cf566f658d
AgentTesla
ec6ee7d5f97f7e5e14602ffba790f130f500cf94fe4f1806ad98d453c5ac9f31
AgentTesla
f194c468d6650ca2579c1adfdb03ab2bfd5d0f6a0c324e97d5651e1514ea93b5
AgentTesla
+ 539 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/231024-kpajpsbg9s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
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:
de59c3246c72163cfc5d3b5a8aec72ec6a585893a6c7d80fbff35238aabe6027
MD5 hash:
c3b2bcacf04baacd6daae4cf4896872c
SHA1 hash:
b7815d4d77ea49e493898d9ce06061e2c9c83feb
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
SH256 hash:
8022776b3441b4ca869741adea47765e0c0e73f694d1f1f147b2ee0d72a038f5
MD5 hash:
6b50b1a6c9216f9259472f3863f34889
SHA1 hash:
b6ff60556657f7b6685efea506e243f0db04aa38
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
SH256 hash:
ed278807068709bcc74ef7d01ce46682b64d8ec9c8466dc8aaeb92ed75495aaa
MD5 hash:
51e85d063788811778e570139e28ac5a
SHA1 hash:
b3a9f24d4d25c91058e6c1f91e07219423b428fa
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
SH256 hash:
e3c961a31b10ee0dfec76e7124f208c90845a7acc96881c345a208225fa8e740
MD5 hash:
4764bccce8828ccb2184b69bae4fbcdd
SHA1 hash:
8e44e09da73b66236e6436879924d0f7524ffd39
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
Parent samples :
954ae52d71114f4e45fb12c0045bc4440822b855c3c2b4c5b685823709729e3b
fe2b7ad78d722728b8dbb2749996b8f4b8ba4cd03c7664f6a8a08612ead20a0a
7a7b9292097894feaec9c1416998c7a622100688c40a76daf8d5d20c937b4aa1
82b8389f2cf0a78fb0e4b981c3c5c344953576e96a9e27d315acc8e46236362e
a393a7c0bcd606e0e4441cf58d1dab63b57e6cedb02fcc72a0a78d273e2b29b5
13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e
760618ef240dc6cf3e8ea6bcdbcb7b905321ac9419502e8291f5f22a65843157
SH256 hash:
8d643c7d9570377091ee4135ab1d9dd4caa6fbe00e66fbd81910fbd84ff602a1
MD5 hash:
3a925c5c9d1d6ca84b98691a7dc99ce8
SHA1 hash:
45819dccdb22b92f6e47af6a9798af7622cccb35
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
SH256 hash:
13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e
MD5 hash:
91976bda9f4b758dff1dcd990081c88f
SHA1 hash:
80bbb9b211ec3687ba0f4479ddfad5bd49f7d819
Link:
https://www.unpac.me/results/41aee020-3e80-4ebf-9a2e-42fa3903c792/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
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

rar 61d89219b10d9cf6131dd2fe5f8189b4839bacdd450c936b91970151e5f2da7b

AgentTesla

Executable exe 13c93beafbb88535f718681736278285e35230910368b9b89cc49b21f7bd459e

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 61d89219b10d9cf6131dd2fe5f8189b4839bacdd450c936b91970151e5f2da7b
Cape
Cape
https://www.capesandbox.com/analysis/455925/
  
Dropped by
MD5 679dcf0dc2fbbbf176e0a24995ca1ee8

Comments