MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c
SHA3-384 hash: 4d135e84406e2770f9220f8b5c959a4aa6a591e42933d63b1f8c129ad465da7be08ad188b0acba840ef519eb1047d733
SHA1 hash: 893da1c93ba0ac1edc4d856712d27edb42594daa
MD5 hash: ea4e28ba48205647ea5c50b9767dcaf7
humanhash: steak-eighteen-finch-washington
File name:supporting documents.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:949'248 bytes
First seen:2021-03-12 16:17:38 UTC
Last seen:2021-03-12 17:44:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 24576:sSRQCDoR0hbnwfJvsU7wZ0sLIoxMxpAe5YH/5qUI+sESW:sSRHDoRgbnwfJvsU7wZUS48/5RIK
Threatray 3'719 similar samples on MalwareBazaar
TLSH FD156B1133E96F1DF03BE77956B4240557FBFA02E311E94EBD95028F1622F80CA91B6A
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
supporting documents.exe
Verdict:
Malicious activity
Analysis date:
2021-03-12 16:21:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/df8dc7d5-6e58-43d1-851b-1b46c201b28b

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/123962/
Detection(s):
SecuriteInfo.com.ArtemisEA4E28BA4820.8501.24391.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/638023
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 367985 Sample: supporting documents.exe Startdate: 12/03/2021 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 10 other signatures 2->45 10 supporting documents.exe 3 2->10         started        process3 file4 31 C:\Users\...\supporting documents.exe.log, ASCII 10->31 dropped 13 supporting documents.exe 10->13         started        16 supporting documents.exe 10->16         started        18 supporting documents.exe 10->18         started        process5 signatures6 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 20 explorer.exe 13->20 injected process7 dnsIp8 33 www.tomofalltrades.site 35.208.4.68, 49740, 80 GOOGLE-2US United States 20->33 35 www.wluabjy.icu 20->35 37 3 other IPs or domains 20->37 47 System process connects to network (likely due to code injection or exploit) 20->47 24 msdt.exe 20->24         started        signatures9 process10 signatures11 49 Modifies the context of a thread in another process (thread injection) 24->49 51 Maps a DLL or memory area into another process 24->51 53 Tries to detect virtualization through RDTSC time measurements 24->53 27 cmd.exe 1 24->27         started        process12 process13 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c/
Threat name:
Win32.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2021-03-12 16:00:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6onz5dcktktnrtm7a2pivdxidi7wm3qha4pswrttvjbggmbgonwa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06fa1b160e322bd7710c9110b1e4e873795b5c2680b8bbe70bbaf23484533459
Formbook
0953e54968ca9407a172c0a35a00d8b30ec603770809bbd2901a070e1b83b7f8
Formbook
21ba0bed0b05a2ce68496e73a5c103fb5b815ac2c77e997f46e5d09666c1c978
Formbook
38272fb3fbcabee6980aeb4be9ae17147a7979dc415cb3cfbedc48cc298bbefa
Formbook
50a189fe28198ad7f41cfefd5fef208b25ec79be1bdddb540f1c9fef45e4f393
Formbook
6aca638f8c9405c4c02bb3f2b5f5e5bc9d5596f8c68a57fb99347031415b584b
Formbook
6c131f342e8226706ba1b39cc955852b022130c14ea12bd3b3cf340bbea25bf6
Formbook
7c201535a28746b62adfa831cfccac096903f5b17ee83b8364fc890fa70a59fd
Formbook
b12941d367baf1228f6d262c4696b267cd1d36e600742aaf1fee00582fe1ea07
Formbook
b7d74de8e9514ca3fbfa4676be4433069bc913f86953a79d40c6272d5077242c
Formbook
+ 3'709 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210312-fsq73s1trs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.the-techs.info/chue/
Unpacked files
SH256 hash:
da3a99534824255ff1ec7683cc02bb4de7086b7ac0d4b69205434638c50510b3
MD5 hash:
ca7979e7723dfb802f49395076754b11
SHA1 hash:
3143a40ad67116cba11d167dc1eaffed6fce4b07
Link:
https://www.unpac.me/results/301198d5-f332-4603-82e7-66d34e3e2b5a/
SH256 hash:
f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c
MD5 hash:
ea4e28ba48205647ea5c50b9767dcaf7
SHA1 hash:
893da1c93ba0ac1edc4d856712d27edb42594daa
Link:
https://www.unpac.me/results/301198d5-f332-4603-82e7-66d34e3e2b5a/
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/f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

zip 14f480156193373f75cf0edd27ce49ef37da2ef09656b3a59d199c2d7ff97456

Formbook

Executable exe f39b9e8c4a9aa6d8cd9f069e8a8ee81a3f666e07071f2b4673aa42633026736c

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 14f480156193373f75cf0edd27ce49ef37da2ef09656b3a59d199c2d7ff97456
Cape
Cape
https://www.capesandbox.com/analysis/123962/

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