MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2
SHA3-384 hash: 449760d4232b3213af9b5506b1481fc80e451f3ed176315c4b487353f3a12748fcc6d2be3de15b0708e0a82e7a5679ae
SHA1 hash: 8d90a13d1e29bec0d4167fdcc67e6710724f79dc
MD5 hash: 3d0e43113603bf2f7c7773ae08d1e03d
humanhash: sweet-massachusetts-oregon-arizona
File name:shipment invoice.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'015'296 bytes
First seen:2023-12-04 18:47:42 UTC
Last seen:2023-12-05 07:55:54 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 24576:Vb34/up+pJSpEBTxv7/S6buFPTPYMXu71oPX9Ikq2rMx:F38PJSoJ/iF8M7Pqkq2rMx
Threatray 1'979 similar samples on MalwareBazaar
TLSH T10F25DF84E270D366FC2E9A7070BF8C2493A689B66970DD1C0DCFF1BE15D239224A745B
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 71e4d6dacac4fcc8 (3 x AgentTesla)
Reporter Anonymous
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
318
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
shipment invoice.exe
Verdict:
Malicious activity
Analysis date:
2023-12-04 18:50:48 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/d9f88520-a99c-49f2-adc2-311a665fdec1

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/462428/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.29201.28824.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 process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/656e1f32855eb2633d5f6a65/reports/9b753cdd-fdd8-4fc3-b26a-2a84a8c2d4ea/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2
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/e073a748-092a-41ae-ae38-fb47c6d79368
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1353428
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Sigma detected: Scheduled temp file as task from temp location
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 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 dnsIp2 2 Behavior Graph ID: 1353428 Sample: shipment_invoice.exe Startdate: 04/12/2023 Architecture: WINDOWS Score: 100 42 mail.bezzleauto.com 2->42 46 Snort IDS alert for network traffic 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 9 other signatures 2->52 8 shipment_invoice.exe 7 2->8         started        12 DrHGavhyoEe.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\DrHGavhyoEe.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmp1F04.tmp, XML 8->40 dropped 54 Uses schtasks.exe or at.exe to add and modify task schedules 8->54 56 Writes to foreign memory regions 8->56 58 Allocates memory in foreign processes 8->58 64 2 other signatures 8->64 14 RegSvcs.exe 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        60 Multi AV Scanner detection for dropped file 12->60 62 Machine Learning detection for dropped file 12->62 24 RegSvcs.exe 12->24         started        26 schtasks.exe 12->26         started        28 RegSvcs.exe 12->28         started        signatures6 process7 dnsIp8 44 mail.bezzleauto.com 45.151.123.240, 25, 49707, 49710 STUMPNERNETDE Germany 14->44 66 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->66 68 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->68 70 Tries to steal Mail credentials (via file / registry access) 14->70 30 conhost.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        72 Tries to harvest and steal browser information (history, passwords, etc) 24->72 36 conhost.exe 26->36         started        signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-12-04 06:21:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
32
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sh7ttgfn6ulvpv2ybyobsd7z6tas5gzn4sfvnr2qpashkouzgdra._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
5e5350a474c7fcc4782d8fb212f0b43aeeb7c144feae45f7fa37544110650768
AgentTesla
6eaee93f96963100221bee90dc15dc6d046951a7ce0a4aafe3ded7bbffa1b0e3
AgentTesla
8c9e69c484e159acd88a9c50d70db9f104d9cd804ac6855d657c077c54faa4ac
AgentTesla
91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2
AgentTesla
c06234b2b8ed7a17f456a98a51014983c603fa2b6d232c2aae989a9a45fc13bb
AgentTesla
f17888c39de05db240eac5f53edc8ad9c1b1512c428dfcce5078bb9636395a8d
AgentTesla
+ 1'969 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231204-xfq7baed97/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
c676732276aedf4b493cd7e3f69479c11a363320205e57535aa2782b2fb2dbb6
MD5 hash:
1badac9f7b63ebad58b0903c8a3c051d
SHA1 hash:
c70c8bb7438860022cf6204b59d4365d4a204e5e
Link:
https://www.unpac.me/results/a1b9f877-56a7-4a63-8a84-5eeb6d20314c/
SH256 hash:
b363b408508f17bade5c83465a0f6b2b856a6f3443ad488284c8b11fb99bc46d
MD5 hash:
c65c13c3999c2f9d0299b7ca1a8b395d
SHA1 hash:
6da0808c3f2bec2a820686eb5cf959d7c01ec3f5
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/a1b9f877-56a7-4a63-8a84-5eeb6d20314c/
Parent samples :
864fd318ac33d9788aaaa7ec0414ace672ca381ef2f7d4d878e3e4789c9b8976
e16c1dfcd46162a057a38ddc99698d28e9da15d37d15cce27dd49b0411f95556
261445c7e46260e4be5a14f4603478a26bb69b3158c81197c62786f43be29939
242c9fcb4922c50dec24989b8994de592f9c3eab91b64196f106a54cf89ba61f
391085720087ca47539076781ecfb5e4027f3c89bb19097b0c3d9e599cc6b6cd
d9961b923d5187cab6c6216a4de0f61a03a24fd3cf6765a5c3eb0963e05f580c
91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2
502d7ec69173cc68e242caf59956a90e519dad247b118c60394be96c9474f2d3
d11d805c3dab49566aad8dfe6d9bbd1c206918980870792ed9d496e8836aefe6
2992b737cc487bae341eee8c6b11377b5baaace7ee2904ba6e4c91c542f1a515
SH256 hash:
c34dfbc328de247d25d670c3b7853f1dddd2ec2607d5dbb0480743b45a15ea64
MD5 hash:
85b87384830444e6ab86a4a692ce96cc
SHA1 hash:
0d7d4614cf31d27e68ebf48e76fb1d308cc08152
Link:
https://www.unpac.me/results/a1b9f877-56a7-4a63-8a84-5eeb6d20314c/
SH256 hash:
2340d070fc92470913072bab9087c4ed5675a0e8d4c61145553a8aad52a16994
MD5 hash:
0cf35c9e685b649b084dc5d385aaa62b
SHA1 hash:
06ab63a9a595c6ef82206c7388ff6aee4b1adb51
Link:
https://www.unpac.me/results/a1b9f877-56a7-4a63-8a84-5eeb6d20314c/
SH256 hash:
91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2
MD5 hash:
3d0e43113603bf2f7c7773ae08d1e03d
SHA1 hash:
8d90a13d1e29bec0d4167fdcc67e6710724f79dc
Link:
https://www.unpac.me/results/a1b9f877-56a7-4a63-8a84-5eeb6d20314c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/91ff3998adf5/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/91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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

7z 4615f8bff44106f4b2eece0bc7c6a6e24a673d6ad9b751b47cd9699fea345228

AgentTesla

Executable exe 91ff3998adf51757d7580e1c190ff9f4c12e9b2de48b56c7507824753a9930e2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462428/
  
Dropped by
SHA256 4615f8bff44106f4b2eece0bc7c6a6e24a673d6ad9b751b47cd9699fea345228
  
Dropped by
MD5 37985fd23422b47d2e52fc388b79865c

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