MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a91633469376c936bd70ccb73cb6e945d2797cc43330cbacf46224fdc73996b. 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 5 File information Comments
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SHA256 hash: 3a91633469376c936bd70ccb73cb6e945d2797cc43330cbacf46224fdc73996b
SHA3-384 hash: 4a18792e3b80bca7471150d531fd2ef2bbaa9d86ddf1ea3fc1a043fb0353d954404c97dbeb4ba4acdda1f0bf6e7c18ab
SHA1 hash: 52771b87c8e2b3f28601e0d635ffbe3d6a577846
MD5 hash: 0f64350e15038eabe4a63a291a0f7d85
humanhash: high-echo-uniform-river
File name:Ulgeggeab.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:13'312 bytes
First seen:2022-07-04 16:33:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 192:PDCGMxl4N8pu311ZyKIipm6rUQ6bLeO3:PD8l4Eu311pIig64QKLeO
Threatray 19'088 similar samples on MalwareBazaar
TLSH T14C52D6247798CA7ED5E506354873D6800678FEF148639B5F3DC97A1FBE326030A62EA0
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 00404080a0a08000 (13 x SnakeKeylogger, 2 x Formbook, 1 x AgentTesla)
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed strictor wacatac
Link:
https://www.filescan.io/uploads/62c316b66ee6df015bb935d3/reports/f345b822-ea24-4019-81a6-6c9e7a779366/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:
njRAT
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c5414f02-09e7-40c2-9e97-7daa2316486c
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1024342
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Creates an undocumented autostart registry key
Encrypted powershell cmdline option found
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 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)
Snort IDS alert for network traffic
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 the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 656842 Sample: Ulgeggeab.exe Startdate: 04/07/2022 Architecture: WINDOWS Score: 100 30 Snort IDS alert for network traffic 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for dropped file 2->34 36 11 other signatures 2->36 7 Ulgeggeab.exe 15 7 2->7         started        process3 dnsIp4 26 cdn.discordapp.com 162.159.133.233, 443, 49718 CLOUDFLARENETUS United States 7->26 20 C:\Users\user\AppData\...\fffffffff.exe, PE32 7->20 dropped 22 C:\Users\...\fffffffff.exe:Zone.Identifier, ASCII 7->22 dropped 24 C:\Users\user\AppData\...\Ulgeggeab.exe.log, ASCII 7->24 dropped 38 Creates an undocumented autostart registry key 7->38 40 Encrypted powershell cmdline option found 7->40 42 Writes to foreign memory regions 7->42 44 Injects a PE file into a foreign processes 7->44 12 MSBuild.exe 14 2 7->12         started        16 powershell.exe 15 7->16         started        file5 signatures6 process7 dnsIp8 28 api.telegram.org 149.154.167.220, 443, 49794 TELEGRAMRU United Kingdom 12->28 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->46 48 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->48 50 Tries to steal Mail credentials (via file / registry access) 12->50 52 4 other signatures 12->52 18 conhost.exe 16->18         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a91633469376c936bd70ccb73cb6e945d2797cc43330cbacf46224fdc73996b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-06-29 08:22:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hkiwgndjg5wjg26xbtfxhs3osrospf6mimzqzowpiyre7xdttfvq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
1bbdd6534336280436213b88cf3075db3754a027cbf39351dd81f923ed0ed137
AgentTesla
55038c397b0fd54ccf6cb4f6d49180ec13e5c46c26446b81f187fa123c77b15e
AgentTesla
6fc5883456ca655a74a91c3127486ab5c21186308fdebfca4ec9035e09d7069a
AgentTesla
83e920c3c1541496bfedb2f77e1f37337eefcff085b7e85c9126a48b2fb51155
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9aa712142f7e90d1ce40058ee97142cad2d89846930ca3f9b9696eec8a9ad7bc
AgentTesla
a68d5f06f6e26cfdfe71522ba502a795d7c1afc1affdafb4b4d459a110e955c4
AgentTesla
ad82b59be4d0131ab705eb239cf3b941672337f648100d54b6ca54adfd985165
AgentTesla
c0728285919a87cc028680b07ff227de1a5dad5ccdc696a943a2bcef986b31df
AgentTesla
cf9821c4c08a6d62cbe17ebc6c0d6ea40336c145e8e9369fe76505e1d3dc8674
AgentTesla
ec58fa2d1346060279ee99733d74491fd84964e469fc29973b220915eab5d168
AgentTesla
+ 19'078 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/220704-t26bksccd3/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5233409707:AAHAmwuxx02dlybktX2JMQ-LyyI2WtST5Lg/sendDocument
Unpacked files
SH256 hash:
3a91633469376c936bd70ccb73cb6e945d2797cc43330cbacf46224fdc73996b
MD5 hash:
0f64350e15038eabe4a63a291a0f7d85
SHA1 hash:
52771b87c8e2b3f28601e0d635ffbe3d6a577846
Link:
https://www.unpac.me/results/e5fd4420-c9a3-4a75-87f2-47985a5150fb/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3a9163346937/report/overview.html
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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
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Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

AgentTesla

Executable exe 3a91633469376c936bd70ccb73cb6e945d2797cc43330cbacf46224fdc73996b

(this sample)

  
Delivery method
Distributed via e-mail attachment

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