MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b
SHA3-384 hash: ad15dbc067acd0d41228f8864a7bcff56dc44a06a48115537d80a7b1c236b811fa1c7a38e1f46d42a51ae59df6310649
SHA1 hash: 68bd51fb9786ebf8dcd5f2b6a7f2723b0eb4a6ab
MD5 hash: 6a2dec98d4672a3d9275ce2deb4ec1a8
humanhash: winner-uranus-six-don
File name:0410YT796705-23.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:812'544 bytes
First seen:2023-05-01 13:01:25 UTC
Last seen:2023-05-13 22:39:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'746 x AgentTesla, 19'628 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:el0DNHisyBMophe06Sfkm5BoZx1X0Hfy3xAiGgTBSbE9PusQvT4IJ0X4e:eiDzyBdW0bPoZDXuf+xAX
Threatray 2'777 similar samples on MalwareBazaar
TLSH T1A005E67C2578E9AFC57AC5618AD4CC67F320916B3306CAE6AC9303584709B52B9C71BF
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 ccce8ed4d48ecccc (7 x AgentTesla, 1 x BluStealer, 1 x DarkCloud)
Reporter Anonymous
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
277
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0410YT796705-23.exe
Verdict:
Malicious activity
Analysis date:
2023-05-01 13:03:56 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/090ba0de-215f-42d6-9715-ce972d8c76d8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/385819/
Detection(s):
Sanesecurity.Malware.28872.BadIN4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/644fb84b463eacbc57db3b58/reports/6e368920-097f-411e-a178-9eb0543c81e8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b
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/b6b8224f-77f6-46b7-abf9-b9825e38c10e
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1224013
Signature
Adds a directory exclusion to Windows Defender
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
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: 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
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 856966 Sample: 0410YT796705-23.exe Startdate: 01/05/2023 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic 2->43 45 Found malware configuration 2->45 47 Sigma detected: Scheduled temp file as task from temp location 2->47 49 6 other signatures 2->49 7 0410YT796705-23.exe 7 2->7         started        11 OUBEzzbjmDWS.exe 5 2->11         started        process3 file4 31 C:\Users\user\AppData\...\OUBEzzbjmDWS.exe, PE32 7->31 dropped 33 C:\Users\...\OUBEzzbjmDWS.exe:Zone.Identifier, ASCII 7->33 dropped 35 C:\Users\user\AppData\Local\...\tmp19BC.tmp, XML 7->35 dropped 37 C:\Users\user\...\0410YT796705-23.exe.log, ASCII 7->37 dropped 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->51 53 Uses schtasks.exe or at.exe to add and modify task schedules 7->53 55 Adds a directory exclusion to Windows Defender 7->55 13 0410YT796705-23.exe 15 2 7->13         started        17 powershell.exe 21 7->17         started        19 schtasks.exe 1 7->19         started        57 Multi AV Scanner detection for dropped file 11->57 59 Machine Learning detection for dropped file 11->59 21 OUBEzzbjmDWS.exe 14 2 11->21         started        23 schtasks.exe 1 11->23         started        signatures5 process6 dnsIp7 39 api.telegram.org 149.154.167.220, 443, 49683, 49684 TELEGRAMRU United Kingdom 13->39 41 192.168.2.1 unknown unknown 13->41 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        61 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->61 63 Tries to steal Mail credentials (via file / registry access) 21->63 65 Tries to harvest and steal browser information (history, passwords, etc) 21->65 29 conhost.exe 23->29         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-04-27 08:32:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhgx2vjyrzyvkf5u7ennigc2h3jhkfgkymkgqdxlgtfohobzlanq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
14a69b15aa430be2251215742e97972393b529833bdf771c0a4ca67b63bd999a
AgentTesla
3104fa64c32a8333437eecd7781d4617f221d12975b4167338dfff37a1022177
AgentTesla
3672a8eb0dd83a097ffd82461ba28956fba31e179c80f3744bcdbd52a5b77121
AgentTesla
36b012ce5d49946e13199b08e3b41589b4eeb80e429628031d6aab90bb2804ae
AgentTesla
487684e01b232a60cff5d2eb9c1a438e3b6545a6e2610771084079bdf42764fd
AgentTesla
4e2f902a6157d7799507b7f68c908c9a2527faba55d4a8b5491906b8b27742c0
AgentTesla
89403a29b44e60819b79a24a7efefb047cd0c61a4eae13febf9b1a067a30645b
AgentTesla
a7bd440cebd598d5baf8741864d87849def7fdd5bd97f35d4b4d5c558a3376c6
AgentTesla
cab8030aedb4d80563698d091a018b5a43d817b31dbe937d5f27f944722cd9ac
AgentTesla
dfb7a1be58446a935967d834e0374d948ed2a5506c6075343b0375614a4a6504
AgentTesla
+ 2'767 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/230501-p9r2pshc7y/
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
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
Malware Config
C2 Extraction:
https://api.telegram.org/bot6277254729:AAH9hHYZNSDZac0nNvgmchkZF8WVRKU5dJ0/
Unpacked files
SH256 hash:
6e9706720fd6af976e582c54079e6ba2365e9134af156246f960b7384af1c31c
MD5 hash:
c23c24b6977006e3c77ec9aae4f02c61
SHA1 hash:
e9779aec194124222cd24d70558e7e87689df5c0
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
SH256 hash:
58d2780bac07a53fa9ef0099c386ad23c2c5b83df99e18bbcca9895f829ef5d8
MD5 hash:
3a6ac846fbf56df68c3cb61cd18c7623
SHA1 hash:
e5b7f4e47b357f330b33330663ff5739a02d442f
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
SH256 hash:
c8808b69b0f4d52c253e35b001da94086786b34162fd51daa3f17eda94bac7f0
MD5 hash:
da56041df789c24cb2a36a364431f766
SHA1 hash:
876e6c579d1092a76ce90c500c43af0cf11724a4
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
SH256 hash:
11cd97ba377bdd0cbd22b603c8ac975451756122d231916989ce700ae6e83278
MD5 hash:
321cc2b64ecafcc77b955be29c9837e1
SHA1 hash:
43467a580b165240d7d203b99fb387fabf340e48
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
SH256 hash:
3b9b203bd33d33e1f98ef4fa2ce809dcabecad4b7cd3183c1a25c58db212a8c5
MD5 hash:
5a151b30dfe69c047cab1f4bfd5a9088
SHA1 hash:
22c5f93ace9ab3f669c34fec9f10738b3109ef83
Detections:
AgentTeslaXorStringsNet
Create hunting rule
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
Parent samples :
81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b
bc2c9a0032b4118b2d862043c73ebbc2627c31f8fb8afb7bd28b8a27be225800
8c12b87a5074c0a18d717cc704bb90915829327c304e0c95384f88820f0215cb
70eddfd85da24eeaffddfdd6326c749326f098b597ce9c8eb79b3e69242a7801
3b0acc239747010ba9c56cf22b4ace536d82bf3748dfb14e8b977c07f8dc976d
392ee3c9d47409b170b5e4d6f7eedf427bf1121be42b024a663340bed3025bd4
1aff0eb2eee6fe5d70d00aee2db2f30cea5167c64ea80369eaaffc39c7e654f8
3d9753ff3f750d10fb81a94cdc1fdf1b4c8ff0f2e3750e7bf93c4baa23c95ab3
f1f712291194a7a1c0342f045b44a7199c14250ff478b0562e562e77b61c7a7b
SH256 hash:
81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b
MD5 hash:
6a2dec98d4672a3d9275ce2deb4ec1a8
SHA1 hash:
68bd51fb9786ebf8dcd5f2b6a7f2723b0eb4a6ab
Link:
https://www.unpac.me/results/9c9c8d08-90e6-4396-9c26-8f3aabd87852/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81cd7d55388e/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/81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b

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 81cd7d55388e715517b4f91ad4185a3ed27514cac314680eeb34cae3b839581b

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/385819/

Comments