MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8. 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: 16


Intelligence 16 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8
SHA3-384 hash: 198feb54e78e12565cd3cf5300a2af0ad19a6cac3e51119f5eb6d66fb763b405f51cef5606e4c0b9d1a92758ebc646fd
SHA1 hash: 68997c4523391c18799e03340d6e9ded82fb2321
MD5 hash: 718ea20df95d161c68617dfe6d085bd5
humanhash: mountain-alaska-ten-blue
File name:Reference Notice_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:266'450 bytes
First seen:2023-03-30 07:20:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:/Ya6Gz/5QY45xV+puvoMyIzIT5uZwQ5Zo7637NqPiLzE:/YQD5V45biuvoMrzq5AZu637PLQ
TLSH T19F44125C72F4C8B7D93B0B361DB92692EBE5E42A21BD86135B40CE807862342DD5F763
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
228
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Reference Notice_pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-03-30 07:21:59 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/3190d928-a48e-44b4-b430-9b2143480948

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/378694/
Detection(s):
Sanesecurity.Malware.28947.BadP.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Launching a process
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/75709/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
86%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/6425385e688c0e6397b3a47e/reports/f00d0590-7c03-4001-8092-af3343e8e200/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3fd66c48-ab4e-4967-9ef4-ef40c3237cda
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1204908
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 837822 Sample: Reference_Notice_pdf.exe Startdate: 30/03/2023 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 4 other signatures 2->39 9 Reference_Notice_pdf.exe 19 2->9         started        process3 file4 25 C:\Users\user\AppData\Local\...\ayfxgtnhq.exe, PE32 9->25 dropped 12 ayfxgtnhq.exe 9->12         started        process5 signatures6 51 Antivirus detection for dropped file 12->51 53 Multi AV Scanner detection for dropped file 12->53 55 Detected unpacking (changes PE section rights) 12->55 57 2 other signatures 12->57 15 ayfxgtnhq.exe 12->15         started        process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 3 6 15->18 injected process9 dnsIp10 27 vinayakamconsultancy.com 103.104.74.204, 49716, 49717, 49718 WEBWERKS-AS-INWebWerksIndiaPvtLtdIN India 18->27 29 musicandgros.com 81.169.145.93, 49707, 49708, 49709 STRATOSTRATOAGDE Germany 18->29 31 10 other IPs or domains 18->31 41 System process connects to network (likely due to code injection or exploit) 18->41 22 colorcpl.exe 13 18->22         started        signatures11 process12 signatures13 43 Tries to steal Mail credentials (via file / registry access) 22->43 45 Tries to harvest and steal browser information (history, passwords, etc) 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-03-29 01:25:47 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 37 (56.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=is3tu6jj64h7kyzjgtaqjdhp3mrhqprk3mh2lzm2mvzmb6rsew4a._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230330-h6m51sbd78/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
70087257272db93cc3ee229694c3edb9ff192b0f66884801519b6e64f8b9ba7a
MD5 hash:
39a60cff62832e8d0c8647e25e57052b
SHA1 hash:
93bac0e563e4844fdc7d4b596b50056eb2a05d1d
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2b8c89d0-6e09-459a-94cd-3c5e33c4bce8/
Parent samples :
66cb83b03a810acbd9b08071efcfb055b272da2df721695fc22624c6bb6cadd6
f086fd673358b6c65312de137bfaf70f8c634586d679326d6f5824bd7d274078
44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8
5b8ff8a69aed3001cbcce96dc36e1340d61f6dcd04ff5a91478e9f14edc65cc8
04c3eb853a54a7a81fc0eb11dcaf12b481bf2e8fc303aaaa39d26fb30eafd325
407cca2ad9433a2a222f9ab1ce14060bf6d5a5c041dc8d2b545257fd0be9e8b1
SH256 hash:
0a04a7542e6c139a601e450bae5b33e4d79b61d2ad858a0f56a055875baf4b00
MD5 hash:
ce8da123207eb65972efa1b3baee6647
SHA1 hash:
78602ea908f189e826c7a58c10ecd43c52f89a57
Link:
https://www.unpac.me/results/2b8c89d0-6e09-459a-94cd-3c5e33c4bce8/
SH256 hash:
44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8
MD5 hash:
718ea20df95d161c68617dfe6d085bd5
SHA1 hash:
68997c4523391c18799e03340d6e9ded82fb2321
Link:
https://www.unpac.me/results/2b8c89d0-6e09-459a-94cd-3c5e33c4bce8/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/44b73a7929f7/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/44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 44b73a7929f70ff5632934c1048cefdb22783e2adb0fa5e59a6572c0fa3225b8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/378694/

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