MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0. 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 17 File information Comments
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SHA256 hash: 8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
SHA3-384 hash: 03f83026b7f4c86aa0ac1d4e45edaca8bdee0e41576069693c65509c1d799751f5560807cf061f6f37ccb5b1f81baa7a
SHA1 hash: 538ea79a057fb8c0bd4f02c697fbefcffef87947
MD5 hash: 913aa7a8d382f9195e8057f5592e47a9
humanhash: march-idaho-green-spaghetti
File name:Nghgisxtb.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:416'768 bytes
First seen:2023-12-05 14:14:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:vTz+p0qIUakJE3iQ6ZeJfTSK7An9/dhiWSI:vTz+p0qIUakJKixZeZ8/dlS
Threatray 3'853 similar samples on MalwareBazaar
TLSH T16594E1296B9A8917C43D6B7BB4F3A7841BB4C5A6F40BFB9F199818EC1C537502E021CD
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)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
307
Origin country :
US US
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
Nghgisxtb.exe
Verdict:
Malicious activity
Analysis date:
2023-12-05 14:17:59 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/3b6aa7c1-fd03-44db-abb1-c3b093b4d6ab

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/462630/
Detection(s):
Win.Trojan.EmbeddedDotNetBinary-9940868-0
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Win.Trojan.EmbeddedReversedDLL-9940922-0
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Win.Trojan.Generic-10014419-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/656f30698b5ba47db2d2ae6c/reports/d24ad6b4-0699-4de0-9c40-25c8d9664eaf/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/17b7e230-653c-4d92-ba00-8c48582b037c
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1353971
Signature
.NET source code contains potential unpacker
Contains functionality to log keystrokes (.Net Source)
Creates multiple autostart registry keys
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)
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1353971 Sample: Nghgisxtb.exe Startdate: 05/12/2023 Architecture: WINDOWS Score: 100 42 mail.asiaparadisehotel.com 2->42 44 api4.ipify.org 2->44 46 api.ipify.org 2->46 48 Snort IDS alert for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 6 other signatures 2->54 7 Nghgisxtb.exe 1 5 2->7         started        11 Fbaoy.exe 5 2->11         started        13 TlKsFB.exe 5 2->13         started        15 2 other processes 2->15 signatures3 process4 file5 36 C:\Users\user\AppData\Roaming\Fbaoy.exe, PE32 7->36 dropped 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->66 68 Creates multiple autostart registry keys 7->68 70 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->70 17 Nghgisxtb.exe 16 5 7->17         started        72 Multi AV Scanner detection for dropped file 11->72 74 Machine Learning detection for dropped file 11->74 76 Injects a PE file into a foreign processes 11->76 22 Fbaoy.exe 14 4 11->22         started        24 TlKsFB.exe 13->24         started        26 TlKsFB.exe 13->26         started        28 Fbaoy.exe 15->28         started        30 TlKsFB.exe 15->30         started        signatures6 process7 dnsIp8 38 mail.asiaparadisehotel.com 112.213.92.100, 49730, 49732, 49737 SUPERDATA-AS-VNSUPERDATA-VN Viet Nam 17->38 40 api4.ipify.org 104.237.62.212, 443, 49729, 49731 WEBNXUS United States 17->40 32 C:\Users\user\AppData\Roaming\...\TlKsFB.exe, PE32 17->32 dropped 34 C:\Users\user\...\TlKsFB.exe:Zone.Identifier, ASCII 17->34 dropped 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->56 58 Tries to steal Mail credentials (via file / registry access) 17->58 60 Creates multiple autostart registry keys 17->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->62 64 Tries to harvest and steal browser information (history, passwords, etc) 30->64 file9 signatures10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2023-12-05 07:13:32 UTC
AV detection:
18 of 22 (81.82%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rb43757snm4jxdjxleupyyevuoch7bqc4aecfy7s6z3qlywyltaa._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
Create hunting rule
Similar samples:
006bf1bbcce9975a267a47c57b2418d136c87dcc0ad30a604e8fa8f99f74d568
AgentTesla
0f6154350e73fcd971f98f7bf3fd43773edd1cca24c16d259a4c755958970332
AgentTesla
1eda1b310543e616e8b7b97e8e5f13597fb3a67ed9658b3daba2f49361563689
AgentTesla
4e38578b5c0bfa9b222837756d0c2387d218aaa990b47befb98571cec82f6b32
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8a0caf3a314acdd946e058b936136c755e7701c1384b1f632075c0bc8d958bcf
AgentTesla
915b5b0d16f54f50af35902863670a73a5ce5dfeabc25cfe3bfa23cc637651fa
AgentTesla
c1cb5a4a27cf88c43845d65d73c7ca0706b00f8c999301061b745ce922c1bd12
AgentTesla
e278ecca391be13103b9584a01fd2bbd4fabdfef4756e3870e48140a304894e2
AgentTesla
f8aa3880202328a119071117878db0c3b5dc03a5cae3cb16e00cd2353598a913
AgentTesla
+ 3'843 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/231205-rkjp5sbh23/
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:
45b90fc6179bc979b8f604604cc1ce1502f7f69eec081ddd21b8f4fb0ce0eae7
MD5 hash:
9a25127accaa3d6b38191a7cf2bea0e2
SHA1 hash:
e2f5a3151cb4a26abd028b0ffc49673db134ad9d
Link:
https://www.unpac.me/results/0e8a8b9c-10b6-429c-9d73-2810f348b70e/
SH256 hash:
c2f1d5df49abda473ed5e6b7a406370ebb1f264f867e849b45a494a5926e199f
MD5 hash:
df7ea5d58d06eb0626e10e375e7badc7
SHA1 hash:
86dc35d6094a4898dc58da5a4ee89cf7787010a9
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/0e8a8b9c-10b6-429c-9d73-2810f348b70e/
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/0e8a8b9c-10b6-429c-9d73-2810f348b70e/
SH256 hash:
3220f2e18f454bac107afcb18a9027bd6e57a7692d9972af500b3e0c33e6e209
MD5 hash:
6e53137dc24986ba8732ae0eca0aba01
SHA1 hash:
11812f140c1b62d822490865fc91f19070e9cbd5
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
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INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/0e8a8b9c-10b6-429c-9d73-2810f348b70e/
Parent samples :
1be1eb3fc904fc5a9e9e555e3fa4a2b6a5a299917d5afa9a1570079195387fa3
6d7ca76f65a253a1587d1f5a94d7ff27d0babf11b830fd778efb96ebd8196442
8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
80a2010e0a0ade699a0c4bc3d5f739491d4ea6ccf4abe39b8232ef39dc7aa430
90c7b6bd3fd954125e071fca9a96c398d2c7c337e150b79c3629285858dd476c
SH256 hash:
8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
MD5 hash:
913aa7a8d382f9195e8057f5592e47a9
SHA1 hash:
538ea79a057fb8c0bd4f02c697fbefcffef87947
Detections:
Typical_Malware_String_Transforms
Create hunting rule
Link:
https://www.unpac.me/results/0e8a8b9c-10b6-429c-9d73-2810f348b70e/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8879bff7f26b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0

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
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
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Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Reverse_DOS_header
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Author:SECUINFRA Falcon Team
Description:Detects an reversed DOS header
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/462630/

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