MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425. 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 2 File information Comments
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SHA256 hash: 33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425
SHA3-384 hash: a08ecf54f017644d3888c7b8781dee3b5346be590159fb81eec36233fbdc70997a921d1f3649527d78e495adb72d9027
SHA1 hash: 7248bf8f4d29a9d3c2e70c1b987b6464713e5f39
MD5 hash: 0bdc1fda2cc607187dc341cc25827e5a
humanhash: michigan-apart-hydrogen-chicken
File name:MT10386867902-004. pdf.exe
Download: download sample
Signature Formbook
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File size:1'142'784 bytes
First seen:2022-09-17 22:53:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'752 x AgentTesla, 19'658 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 24576:sONzSIoHIbBEAX+b0cM9/+TY0kNUYuy1aCb:sYzSI+IdEBb/MgTY0kNIy1/b
TLSH T17E35280722C509A4D07A52B864DCC5B24B7A9E45E63BC545BFCC9CEFF693F2842D23A1
TrID 49.6% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
21.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.9% (.SCR) Windows screen saver (13101/52/3)
7.1% (.EXE) Win64 Executable (generic) (10523/12/4)
4.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
File icon (PE):PE icon
dhash icon 13331333690d3749 (11 x Formbook, 5 x AgentTesla, 1 x AveMariaRAT)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
465
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
MT10386867902-004. pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-09-17 22:56:11 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/dccbd2b9-c6d8-41f7-9ab2-914732088aa0

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/310994/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.42577.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Verdict:
No Threat
Threat level:
  2/10
Confidence:
80%
Tags:
anti-vm formbook remcos
Link:
https://www.filescan.io/uploads/6326500e35180ec88e31ff97/reports/2305b730-3efd-465b-823d-a2cded671d86/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:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bfa5652b-05a4-4951-a0f7-33b6ae1ac12c
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1072335
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Deletes itself after installation
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
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 steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 704877 Sample: MT10386867902-004. pdf.exe Startdate: 18/09/2022 Architecture: WINDOWS Score: 100 32 www.msk-kadril.store 2->32 36 Multi AV Scanner detection for domain / URL 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 7 other signatures 2->42 9 MT10386867902-004. pdf.exe 3 2->9         started        signatures3 process4 file5 24 C:\Users\...\MT10386867902-004. pdf.exe.log, ASCII 9->24 dropped 12 MT10386867902-004. pdf.exe 9->12         started        15 MT10386867902-004. pdf.exe 9->15         started        process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 12->52 54 Maps a DLL or memory area into another process 12->54 56 Sample uses process hollowing technique 12->56 58 Queues an APC in another process (thread injection) 12->58 17 explorer.exe 12->17 injected process8 dnsIp9 26 www.caraudiohub-au.site 64.190.63.111, 49721, 49722, 80 NBS11696US United States 17->26 28 www.uniquegiftlab.com 188.114.97.3, 49720, 80 CLOUDFLARENETUS European Union 17->28 30 3 other IPs or domains 17->30 34 System process connects to network (likely due to code injection or exploit) 17->34 21 cmmon32.exe 13 17->21         started        signatures10 process11 signatures12 44 Tries to steal Mail credentials (via file / registry access) 21->44 46 Tries to harvest and steal browser information (history, passwords, etc) 21->46 48 Deletes itself after installation 21->48 50 2 other signatures 21->50
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425/
Threat name:
ByteCode-MSIL.Trojan.Leonem
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Status:
Malicious
First seen:
2022-09-07 19:54:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
71
AV detection:
28 of 39 (71.79%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=go2gc3dxcihgqbpgfenciwibvl2zup7stk2yk2ckvh7ueynyqqsq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:tdet rat spyware stealer trojan
Link:
https://tria.ge/reports/220917-2tx91aeder/
Behaviour
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
Modifies Internet Explorer settings
Suspicious use of SetThreadContext
Checks computer location settings
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6eb8cc3d-febe-4eaa-86d6-02e582bf00e0
Unpacked files
SH256 hash:
253c6a84a874153c19bf05bec4d01ffe7fc0f2d2f2df4e3238a13365b1ea8cc7
MD5 hash:
e3ac841b57fe32808772e1ad00cadee8
SHA1 hash:
f841dfae708b50887f39963128d4249181dfef68
Detections:
XLoader
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
Parent samples :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 hash:
a45fb00ba8d75c41180c53b7b92b5f4363de02cd7f393d8758980558fadb71a3
MD5 hash:
1475673e34aa047bcfdbd00b6ff36b5e
SHA1 hash:
973b06585750b09cb9863654a8f868e68bcfe63d
Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
SH256 hash:
8b533ffaed24e0351e489b14aaac6960b731db189ce7ed0c0c02d4a546af8e63
MD5 hash:
dbc7be56e6e32349315170599c8b333f
SHA1 hash:
d8e5840e3574b87d435e55a65ac648e040871aee
Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
SH256 hash:
2f2bcfc21f807811c66dee96d9aa0e4fd5d8d71cfab1b027a36e54488f37ab36
MD5 hash:
658c7f4fe24e167a33a75df0bcc47b7a
SHA1 hash:
cd5750c18dba16b7d9b4785190528a4ba977943e
Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
SH256 hash:
33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425
MD5 hash:
0bdc1fda2cc607187dc341cc25827e5a
SHA1 hash:
7248bf8f4d29a9d3c2e70c1b987b6464713e5f39
Link:
https://www.unpac.me/results/a474dc6d-4939-40ef-a1f2-f5305a225970/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425

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
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Rule name:Skystars_Malware_Imphash
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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

Formbook

Executable exe 33b4616c77120e6805e6291a245901aaf59a3ff29ab585684aa9ff4261b88425

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/310994/

Comments