MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
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SHA256 hash: 6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72
SHA3-384 hash: ce6174779f713afc80a8792464a277801a7d356ec6880428165602e5d477f22e51abced277e2b1ae0049eb0a5851ab33
SHA1 hash: b4d6037898b739d3d51a5d782c1b3d2c8060e767
MD5 hash: a9fb17bc8727aa89947c6bad96fd8d03
humanhash: maryland-finch-oxygen-wisconsin
File name:triage_dropped_file
Download: download sample
Signature Formbook
Create hunting rule
File size:32'256 bytes
First seen:2022-06-08 11:52:21 UTC
Last seen:2022-06-08 12:49:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:lNDB4bvq9Nf7oSFYwQTXvLWRgcL0ST8iNxy2W:H14bvqf97gWRgcL9HNxvW
TLSH T13BE2D01AF7A4863AE9750B752E7303410F7878538C13D76FB890650BBD273A105A2BF9
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b28ccaacda53d39b (34 x Formbook, 1 x BitRAT, 1 x SnakeKeylogger)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DHL CUSTOM CLEARANCE FORM.xlsx
Verdict:
Malicious activity
Analysis date:
2022-06-08 12:20:35 UTC
Tags:
encrypted exploit CVE-2017-11882 opendir loader
Link:
https://app.any.run/tasks/8cb8248e-0032-43b6-a5cd-d4fcdc8c6495

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/277762/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.12584.23903.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching cmd.exe command interpreter
Creating a process with a hidden window
Forced system process termination
Sending a custom TCP request
Running batch commands
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Searching for synchronization primitives
Setting browser functions hooks
Query of malicious DNS domain
Forced shutdown of a system process
Sending an HTTP GET request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware obfuscated packed
Link:
https://www.filescan.io/uploads/62a08db86aa17a21fc2c4a35/reports/e5e79620-b3ef-4ba0-81dd-78960e98278f/overview
Result
Verdict:
UNKNOWN
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/2396c2bf-ebc7-46a1-9b1a-3d8079350adf
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1008966
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
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)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 641462 Sample: triage_dropped_file Startdate: 08/06/2022 Architecture: WINDOWS Score: 100 45 www.shopevix.com 2->45 47 shopevix.com 2->47 65 Snort IDS alert for network traffic 2->65 67 Multi AV Scanner detection for domain / URL 2->67 69 Malicious sample detected (through community Yara rule) 2->69 71 10 other signatures 2->71 11 triage_dropped_file.exe 15 7 2->11         started        signatures3 process4 dnsIp5 49 pharmakoehnen.ga 192.185.174.180, 49769, 80 UNIFIEDLAYER-AS-1US United States 11->49 39 C:\Users\user\AppData\...\Mjizdrru.exe, PE32 11->39 dropped 41 C:\Users\...\Mjizdrru.exe:Zone.Identifier, ASCII 11->41 dropped 43 C:\Users\user\...\triage_dropped_file.exe.log, ASCII 11->43 dropped 75 Creates an undocumented autostart registry key 11->75 77 Writes to foreign memory regions 11->77 79 Injects a PE file into a foreign processes 11->79 16 MSBuild.exe 11->16         started        19 cmd.exe 1 11->19         started        21 cmd.exe 1 11->21         started        file6 signatures7 process8 signatures9 51 Modifies the context of a thread in another process (thread injection) 16->51 53 Maps a DLL or memory area into another process 16->53 55 Sample uses process hollowing technique 16->55 57 2 other signatures 16->57 23 explorer.exe 16->23 injected 26 conhost.exe 19->26         started        28 timeout.exe 1 19->28         started        30 conhost.exe 21->30         started        process10 signatures11 73 Uses ipconfig to lookup or modify the Windows network settings 23->73 32 ipconfig.exe 23->32         started        process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 32->59 61 Maps a DLL or memory area into another process 32->61 63 Tries to detect virtualization through RDTSC time measurements 32->63 35 cmd.exe 1 32->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-08 11:53:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nngubrwuchpd5jtl66n777rlzyaq2jn2baty7gi6j4scrfx5xrza._file
Verdict:
malicious
Label(s):
formbook
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masslogger
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220608-n2aa9agdhn/
Behaviour
Delays execution with timeout.exe
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
suricata: ET MALWARE FormBook CnC Checkin (GET)
Formbook
Unpacked files
SH256 hash:
6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72
MD5 hash:
a9fb17bc8727aa89947c6bad96fd8d03
SHA1 hash:
b4d6037898b739d3d51a5d782c1b3d2c8060e767
Link:
https://www.unpac.me/results/64ec845d-3565-4cce-b693-322e4f9d6f4a/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6b4d40c6d411/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/6b4d40c6d411de3ea66bf79bfffe2bce010d25ba08278f991e4f242896fdbc72

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/277762/

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