MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
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SHA256 hash: 33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546
SHA3-384 hash: d6148fe554903342eb7d5321b9862ae1f8db3334100f0de4a3b87d7037e84e15939914448eabd1ef575ecc881bbce4e7
SHA1 hash: 38d0894b7d92a6a2a19787677b1ae47ce4043deb
MD5 hash: f2adcbe54ab2b9e288c2864117f70019
humanhash: failed-princess-alpha-speaker
File name:vto.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:546'304 bytes
First seen:2022-03-16 19:08:57 UTC
Last seen:2022-04-20 09:54:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:XU7IbqJzs2WUb5TC+fa2P1fd43FxSLAFXiuo9ZxlDvJ07lAKR6lKeRUcZ64TQlRT:HqJL1b5NS2NqF+9XxlTJBU
Threatray 14'236 similar samples on MalwareBazaar
TLSH T1E5C4BF59312035DEC82BCF3189619C78DFD16D76931FE22B58C335EEA67CA5B8E04862
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
vto.exe
Verdict:
Malicious activity
Analysis date:
2022-03-17 02:40:08 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/1b672a63-63fc-46b9-a221-86a4234a6c0b

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/251557/
Detection(s):
SecuriteInfo.com.Suspicious.Win32.Save.a.6574.10640.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/623235d40cd58dbd92a85657/reports/9c0bb071-64ac-47b4-87b0-db41585b16c3/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/17b025e5-e0fd-471c-a77b-3b5bc2fd07cc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/958272
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
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
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 590753 Sample: vto.exe Startdate: 16/03/2022 Architecture: WINDOWS Score: 100 36 www.mowaq.biz 2->36 38 www.feichengshe.com 2->38 40 ljh520.free.dongfangjian.cn 2->40 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 10 other signatures 2->48 10 vto.exe 6 2->10         started        signatures3 process4 file5 30 C:\Users\user\AppData\...\aSbmkCZAyvhxyj.exe, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\...\tmpF65B.tmp, XML 10->32 dropped 34 C:\Users\user\AppData\Local\...\vto.exe.log, ASCII 10->34 dropped 56 Uses schtasks.exe or at.exe to add and modify task schedules 10->56 58 Writes to foreign memory regions 10->58 60 Injects a PE file into a foreign processes 10->60 14 RegSvcs.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures6 process7 signatures8 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 2 other signatures 14->68 19 cmd.exe 14->19         started        22 explorer.exe 14->22 injected 24 conhost.exe 17->24         started        process9 signatures10 50 Modifies the context of a thread in another process (thread injection) 19->50 52 Maps a DLL or memory area into another process 19->52 54 Tries to detect virtualization through RDTSC time measurements 19->54 26 cmd.exe 1 19->26         started        process11 process12 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-03-16 17:04:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
29 of 42 (69.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gor4am7oczykvcf5hbjzelek3eyhy5yaynx2emkbj5ojnnmtovda._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0b32f79b8abe4a232193f819dccfa47a922353e961d37d1becd35171c2b04a89
Formbook
1358d88e078f1c59b546256968179bf213928f1e6f4e7afa255681b2cd8f92a2
Formbook
198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c
Formbook
54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335
Formbook
6ecfdff224175dade2cbf63719974b5335c1a81cf787142681163ddf882ce00e
Formbook
73cbecbb1b1ea2460d93f020a4fd71044e40c6721f48693da10855544dc8da20
Formbook
8ba05ab47459b8f496adf156b26daba787a2c35633142edd047b7d15f1459722
Formbook
c0f665918f4ea75327960ddf58cf37e415a6bf6569a4c22aa6291fbac9d171ce
Formbook
+ 14'226 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:b11y rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220316-xtsbjadhgn/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
bf88099b96595d25d551b8756dd990180fe1472f0ec632f998c40b80a6c821d7
MD5 hash:
a4b09fc208b35f0220f4e724fe297918
SHA1 hash:
218882ca246638cc4ce7297f33510ca7623a7f5c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f3b00a10-9ca3-4d9a-bae5-7bcc0d42b088/
Parent samples :
198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c
33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546
SH256 hash:
df68be1980b3a5481a9a8ac95c5a35f1945f41010ba0c064e54c579e9120cfd8
MD5 hash:
67d68d8e7e20e1ce06caf6c3d281558f
SHA1 hash:
74671145e97eb09457f7e99602b84d1e0e3afc0a
Link:
https://www.unpac.me/results/f3b00a10-9ca3-4d9a-bae5-7bcc0d42b088/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/f3b00a10-9ca3-4d9a-bae5-7bcc0d42b088/
SH256 hash:
33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546
MD5 hash:
f2adcbe54ab2b9e288c2864117f70019
SHA1 hash:
38d0894b7d92a6a2a19787677b1ae47ce4043deb
Link:
https://www.unpac.me/results/f3b00a10-9ca3-4d9a-bae5-7bcc0d42b088/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/33a3c033ee16/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/33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546

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
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/251557/
  
URLhaus
https://urlhaus.abuse.ch/url/2100722/

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