MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a. 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: 10


Intelligence 10 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a
SHA3-384 hash: b169c14eff3f8334b73dedf3030c19403cd02aebde64040dcc3578b4f2dc7a42797b2d41f095082d48e388683e7eda3e
SHA1 hash: ccc534305f283b657c7ac9ddcbdbc321da08f95f
MD5 hash: e16fc6dd80b2adb86bfdcd9f4fe6a787
humanhash: helium-pizza-magazine-berlin
File name:M.V. CHIANG TUN_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:872'448 bytes
First seen:2021-01-12 07:22:42 UTC
Last seen:2021-01-12 08:55:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:bqDIo/in9nToxcPCFpLrqCDSnmgfP5fkdTeCggIlVGg6Vo4w:2D/MnM6Pa6Cg5GmV1Eo4
TLSH 6C05CF0021786F72EA3C97F92605621983F5775F14EEE7B40CD270E721B9F865A80ADB
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: smtp16.dnsxperta.com
Sending IP: 217.13.93.142
From: Sunariah Abidin <liner@asc-asia.com>
Subject: M.V. CHIANG TUN V. 2102
Attachment: M.V. CHIANG TUN.pdf.arj (contains "M.V. CHIANG TUN_pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
185
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
M.V. CHIANG TUN_pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-01-12 08:47:11 UTC
Tags:
trojan formbook stealer opendir
Link:
https://app.any.run/tasks/38efbedb-7c1b-4e77-812b-02048f4dfcae

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/111423/
Detection(s):
SecuriteInfo.com.Trojan.Siggen11.57608.401.96.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/578760
Signature
.NET source code contains potential unpacker
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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 detect virtualization through RDTSC time measurements
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 338429 Sample: M.V. CHIANG TUN_pdf.exe Startdate: 12/01/2021 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 8 other signatures 2->43 10 M.V. CHIANG TUN_pdf.exe 3 2->10         started        process3 file4 27 C:\Users\user\...\M.V. CHIANG TUN_pdf.exe.log, ASCII 10->27 dropped 13 M.V. CHIANG TUN_pdf.exe 10->13         started        process5 signatures6 51 Modifies the context of a thread in another process (thread injection) 13->51 53 Maps a DLL or memory area into another process 13->53 55 Sample uses process hollowing technique 13->55 57 Queues an APC in another process (thread injection) 13->57 16 explorer.exe 13->16 injected process7 dnsIp8 29 sbsfe-p8.geo.mf0.yahoodns.net 98.137.244.37, 49755, 80 YAHOO-GQ1US United States 16->29 31 executivehomeoffices.com 160.153.136.3, 49754, 80 GODADDY-AMSDE United States 16->31 33 4 other IPs or domains 16->33 35 System process connects to network (likely due to code injection or exploit) 16->35 20 colorcpl.exe 16->20         started        signatures9 process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-01-12 04:51:02 UTC
AV detection:
12 of 46 (26.09%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7cryr7adfkt736ao2w5nquhdikpoe5quxvqvf35kbeh4o6wtxrva._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210112-tzswzl39x2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.huynhanhdung.com/kna/
Unpacked files
SH256 hash:
f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a
MD5 hash:
e16fc6dd80b2adb86bfdcd9f4fe6a787
SHA1 hash:
ccc534305f283b657c7ac9ddcbdbc321da08f95f
Link:
https://www.unpac.me/results/dd1df20a-c45d-44b3-a933-e5d69c7ba771/
SH256 hash:
bf7812abe9363ad01d22544323c852a7f956f73450ea1c4f3257fcf061022404
MD5 hash:
56473a343e093c38944747a508595978
SHA1 hash:
2da0ba67ff3a0cc0dd1de5dd081242ea955b14ea
Link:
https://www.unpac.me/results/dd1df20a-c45d-44b3-a933-e5d69c7ba771/
SH256 hash:
64a419709ad219ffc006bda776b650da486d55048d2fa34525f40227da0e5c86
MD5 hash:
88c0ec8398978fa2e4240f02765086ad
SHA1 hash:
5a5c4935b2d70e890c89ad9332365f4f4aa86f3c
Link:
https://www.unpac.me/results/dd1df20a-c45d-44b3-a933-e5d69c7ba771/
SH256 hash:
c61f0ce33d1eab10cd1be24e23a6cbaa3b8d3fab41745e2b9d22ce94d2adfe57
MD5 hash:
279009b35684ebfa3207f1052ad6ec1a
SHA1 hash:
216fe98253bea61028d0a1f686e2600646f2743e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/dd1df20a-c45d-44b3-a933-e5d69c7ba771/
Parent samples :
f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a
cf6959fe2bb4c2e078a8bb51c097dfd79bc0ca5cd296090a897ecb30a3ee6102
f777596fe0fa9c11e6ff244810d6c6d4846f9c03b8840ad88ac8853de8a766db
743f890d93b9f2974c3770efbd0c9f07e0a866542d45572ccf47946673b60874
f3ddc95f31cacb29b7ec70b8dd6f0fb5befb759f7044e491b269417e91037d1d
f59df25daa1bbe11f38724ad0b36eebc535f1f36ae3796ce5bebe1049cbb57ed
8bcaa843a3dbd507050d15f193571dfc2a1e584e23a6dea41431067b188ea199
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a

File information

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

Malspam

Formbook

arj 29cca37d6dc2627a5ebf4301f5c34039493f014be180aee6abb8181d0509a912

Formbook

Executable exe f8a388fc032aa7fdf80ed5bad850e3429ee27614bd6152efaa090fc77ad3bc6a

(this sample)

  
Dropped by
MD5 4d9cd93c82192d7d9a6bb4d14c17457e
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 29cca37d6dc2627a5ebf4301f5c34039493f014be180aee6abb8181d0509a912
Cape
Cape
https://www.capesandbox.com/analysis/111423/

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