MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1. 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


Formbook


Vendor detections: 15


Intelligence 15 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1
SHA3-384 hash: 58a392620cbf2130cb7a1ee691982e68ad3b846003efcb62987c3b142a3538b9e3a7254d7daa111aa5d13bc37344be95
SHA1 hash: 1d620ce5fc13339592cd213878b4c16d2e90612b
MD5 hash: ece692c29ece53684ca7d942c937fb77
humanhash: ohio-winner-snake-william
File name:QUOTATION-#170424.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:839'916 bytes
First seen:2024-04-17 13:15:05 UTC
Last seen:2024-04-17 13:16:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:pcb3DTfOBAd183Oc4MDLpJlkmJisXSIdwz:pQ3nQW83Oc/L5kmiUSws
Threatray 32 similar samples on MalwareBazaar
TLSH T1E305012133B8CE27C6AF427BA43835200FB8DD63544BF75A1E98B4DE5D77B801A21796
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 31f09c92929cf031 (3 x DarkCloud, 2 x AgentTesla, 1 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
345
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1.exe
Verdict:
Malicious activity
Analysis date:
2024-04-17 13:17:25 UTC
Tags:
evasion ftp stealer agenttesla
Link:
https://app.any.run/tasks/783f8873-fc1d-451f-ba3c-af6546af6727

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
Creating a process from a recently created file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Reading critical registry keys
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Forced shutdown of a system process
Stealing user critical data
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/661fcb9375339da04f94b55a/reports/7a7fd672-36c4-4731-b188-732e5c5e471e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/f837cc0c-a102-4c96-bf77-63e5b3a1c28f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1427374
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Drops PE files with benign system names
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Schedule system process
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: Suspect Svchost Activity
Sigma detected: System File Execution Location Anomaly
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1427374 Sample: QUOTATION-#170424.exe Startdate: 17/04/2024 Architecture: WINDOWS Score: 100 59 ip-api.com 2->59 61 ftp.ercolina-usa.com 2->61 63 5 other IPs or domains 2->63 79 Malicious sample detected (through community Yara rule) 2->79 81 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->81 83 Multi AV Scanner detection for submitted file 2->83 85 16 other signatures 2->85 9 QUOTATION-#170424.exe 1 7 2->9         started        13 svchost.exe 2 2->13         started        15 svchost.exe 2->15         started        17 4 other processes 2->17 signatures3 process4 file5 57 C:\Users\user\AppData\Roaming\svchost.exe, PE32+ 9->57 dropped 107 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->107 109 Drops PE files with benign system names 9->109 19 cmd.exe 1 9->19         started        21 cmd.exe 1 9->21         started        111 Multi AV Scanner detection for dropped file 13->111 113 Machine Learning detection for dropped file 13->113 115 Writes to foreign memory regions 13->115 24 jsc.exe 15 2 13->24         started        27 WerFault.exe 19 16 13->27         started        117 Allocates memory in foreign processes 15->117 119 Injects a PE file into a foreign processes 15->119 29 RegAsm.exe 15->29         started        35 2 other processes 15->35 31 RegSvcs.exe 17->31         started        33 WerFault.exe 2 17->33         started        37 5 other processes 17->37 signatures6 process7 dnsIp8 39 svchost.exe 19->39         started        42 conhost.exe 19->42         started        44 timeout.exe 1 19->44         started        87 Uses schtasks.exe or at.exe to add and modify task schedules 21->87 46 conhost.exe 21->46         started        48 schtasks.exe 1 21->48         started        65 ercolina-usa.com 192.254.225.136, 21, 49708, 49714 UNIFIEDLAYER-AS-1US United States 24->65 67 ip-api.com 208.95.112.1, 49706, 49716, 49728 TUT-ASUS United States 24->67 69 api.ipify.org 104.26.12.205, 443, 49705, 49710 CLOUDFLARENETUS United States 24->69 89 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->89 91 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 24->91 93 Tries to steal Mail credentials (via file / registry access) 24->93 95 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 24->95 97 Tries to harvest and steal browser information (history, passwords, etc) 29->97 99 Installs a global keyboard hook 29->99 signatures9 process10 signatures11 101 Writes to foreign memory regions 39->101 103 Allocates memory in foreign processes 39->103 105 Injects a PE file into a foreign processes 39->105 50 MSBuild.exe 39->50         started        53 MSBuild.exe 39->53         started        55 WerFault.exe 39->55         started        process12 signatures13 71 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 50->71 73 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 50->73 75 Tries to steal Mail credentials (via file / registry access) 50->75 77 Installs a global keyboard hook 50->77
Score:
53%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1/
Threat name:
Win64.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-04-17 13:16:06 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
7
AV detection:
19 of 23 (82.61%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gznvf4a6fw76dinkdd5drbtlzjufkefq56w7bzbk5p6rzkt4ylaq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
05bcef8138fe660e6b755afb54117d5872829732fa017f0eb13a5cb1007122f6
Formbook
365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1
Formbook
5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f
Formbook
98b668f7457089866b6364c672e8dd35b12a24899eb80fdfcfc2a5aab8d9aa5b
Formbook
ab4126229b73320d15647edcd1af5fbd138d651fa2869cc20be9845f70570e79
Formbook
bfcf6d5227339dcf5e3a724db318f0f4b1b1ffe0635a94bc4555bb4a690a2750
Formbook
ce021aaca1ac091165c6bd6d9b27d41c0994d308f39bce54a5d7e59ba76a421e
Formbook
+ 22 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/240417-qhsdtsae4w/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
AgentTesla
Unpacked files
SH256 hash:
365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1
MD5 hash:
ece692c29ece53684ca7d942c937fb77
SHA1 hash:
1d620ce5fc13339592cd213878b4c16d2e90612b
Link:
https://www.unpac.me/results/969a6457-0003-4096-b16a-73e57515aaff/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1

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:AgentTeslaV2
Create hunting rule
Author:ditekshen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
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:MALWARE_Win_AgentTeslaV2
Create hunting rule
Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_9f4a80b2
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

Malspam

Formbook

Executable exe 365b52f01e2dbfe1a1aa18fa38866bca685510b0efadf0e42aebfd1caa7cc2c1

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments