MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511. 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: 17


Intelligence 17 IOCs YARA 13 File information Comments
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SHA256 hash: b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511
SHA3-384 hash: 22584556c1ef5ab4f6452f87891035d7a6cf6d542cfc0675d2c7d7622ef3fa56e02e4fe9fc9978ce8e9f5dabed0e1091
SHA1 hash: d02d0dd57e428590cae3d6fa5fbf9d7045f72c72
MD5 hash: 16e38f9a8b896a6258a590bc77e11088
humanhash: idaho-eleven-high-early
File name:Outstanding Payments.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:921'600 bytes
First seen:2024-02-07 13:41:39 UTC
Last seen:2024-02-08 22:42:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:dxQ81VNHd561AqbEWUbsjDWmXA3Kn6aB9cxE:bQ8Lk1Bb/isXFCM6gr
TLSH T17115DFFD8202551AC43536B8C77353EA27BD1EE6BC46CB0684EC79B8647E3803619B5E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter TeamDreier
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
261
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511.exe
Verdict:
Malicious activity
Analysis date:
2024-02-07 13:43:42 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/f9a2a135-694e-49a6-b637-eb795f701aec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/475143/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2511.7167.21524.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65c388ba04c91578faaee257/reports/ba2df788-7c9c-4c39-a216-822ce183c9a6/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511
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/caf1a953-cbcd-4041-9f83-111074a184b9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388345
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1388345 Sample: Outstanding Payments.exe Startdate: 07/02/2024 Architecture: WINDOWS Score: 100 42 windowsupdatebg.s.llnwi.net 2->42 44 maximusstorage.in 2->44 46 2 other IPs or domains 2->46 52 Malicious sample detected (through community Yara rule) 2->52 54 Sigma detected: Scheduled temp file as task from temp location 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 13 other signatures 2->58 8 enGYaQXCs.exe 2->8         started        11 Outstanding Payments.exe 7 2->11         started        signatures3 process4 file5 60 Multi AV Scanner detection for dropped file 8->60 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->62 64 Machine Learning detection for dropped file 8->64 14 enGYaQXCs.exe 8->14         started        17 schtasks.exe 8->17         started        38 C:\Users\user\AppData\Roaming\enGYaQXCs.exe, PE32 11->38 dropped 40 C:\Users\user\AppData\Local\...\tmpD735.tmp, XML 11->40 dropped 66 Adds a directory exclusion to Windows Defender 11->66 68 Injects a PE file into a foreign processes 11->68 19 Outstanding Payments.exe 15 2 11->19         started        22 powershell.exe 23 11->22         started        24 powershell.exe 23 11->24         started        26 schtasks.exe 1 11->26         started        signatures6 process7 dnsIp8 70 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->70 72 Tries to steal Mail credentials (via file / registry access) 14->72 74 Tries to harvest and steal browser information (history, passwords, etc) 14->74 28 conhost.exe 17->28         started        48 maximusstorage.in 116.206.105.135, 49705, 49707, 49717 PUBLIC-DOMAIN-REGISTRYUS Seychelles 19->48 50 api.ipify.org 104.26.13.205, 443, 49702, 49706 CLOUDFLARENETUS United States 19->50 76 Installs a global keyboard hook 19->76 30 conhost.exe 22->30         started        32 WmiPrvSE.exe 22->32         started        34 conhost.exe 24->34         started        36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-02-06 15:53:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xc53rksx4v23oas5rogmg3pqhpeeusqjdigabctijklljyltwuiq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240207-qzpdhahbh8/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
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
Unpacked files
SH256 hash:
277c8f7fae4dba22a63bc6f94de024a55cb820a53532846dd69f9a020ba3a0f7
MD5 hash:
3cd2a46d0903bedae129c5b6fa70c5a0
SHA1 hash:
c6630b360196f1a6031d348a1423b70edc3bb905
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
Parent samples :
b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511
4ff2b35479cd45520aa714643c2dcb649e7d73caf9a6ab1c83d73ec439b6121b
SH256 hash:
5b723ee80100b140547c31683a1ff4e68f06df93a2c77af44236d2513ce4d42e
MD5 hash:
f34fd05b811be6429eda51c770aff4d4
SHA1 hash:
be05ff8d7311ca4be1da92641b68f153e6d07d69
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
SH256 hash:
172b90807372964122135cc47fe7d979822e28063c34bb3507b60a76f5fa4cf8
MD5 hash:
c12638fd9de026fd08a8b7f03d457786
SHA1 hash:
6a2ebdd329fb438adcd6d0792d7b830b5faac1d7
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
SH256 hash:
a3b82e2d17f660c450ba4dae95a26b906f12626462a4bb9a6c2833071dd9faf5
MD5 hash:
cf3241f04cc546fa617566e84b5c1793
SHA1 hash:
0b9cbe0c45fba268857e11ad4d71105193c19d02
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
SH256 hash:
731223cc23140a70d6d7cb3a6894c8fc27b742b1f3dba02ffc82a0809ad4951e
MD5 hash:
7e817168f5b53affbea32c93db801a7e
SHA1 hash:
33c1e77ff5a4e446f0e6aefc68251be343ec38b9
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
SH256 hash:
b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511
MD5 hash:
16e38f9a8b896a6258a590bc77e11088
SHA1 hash:
d02d0dd57e428590cae3d6fa5fbf9d7045f72c72
Link:
https://www.unpac.me/results/939bc007-f9f2-40c1-996a-d4c5e2c155a5/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8bbb8aa57e5/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/b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511

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: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:NET
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
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Executable exe b8bbb8aa57e575b7025d8b8cc36df03bc84a4a091a0c008a684a96b4e173b511

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/475143/

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