MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac
SHA3-384 hash: 8af61e0eec92627ea778377f99916522303b5de6014136a74efd73f2330b441196ae68a18edc28a3dfb519a7d9ac882a
SHA1 hash: 7d1121f65e9c65b5185131d44a4674fdaf93ee6e
MD5 hash: 818109bbfd025ef72c7cb41006ff9e6a
humanhash: skylark-cat-nebraska-kentucky
File name:818109bbfd025ef72c7cb41006ff9e6a.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:698'632 bytes
First seen:2022-03-28 07:58:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:anH8Ub56F1HURPr45tNIVgbokwQgGZSmXh50IOSwMD8G9tdJXFZk:wk5o27FZk
Threatray 14'587 similar samples on MalwareBazaar
TLSH T18EE4EC2A38BA100DB272AD6C6BBCB175911EF3F226365C7B0DF7054A11129F0DB9D627
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
203
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/258482/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1264.9794.6974.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe obfuscated overlay packed packed replace.exe
Link:
https://www.filescan.io/uploads/62416acc1f20423948407299/reports/5754c57a-03ab-4214-8b4c-21019191034f/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:
Malicious
Link:
https://analyze.intezer.com/analyses/7c8f30c7-f160-434c-baff-8c7c3f0ba4d4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965647
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Allocates memory in foreign processes
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 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 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 virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 598128 Sample: SIolVwxBbR.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 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 7 other signatures 2->48 9 SIolVwxBbR.exe 1 2->9         started        process3 file4 26 C:\Users\user\AppData\...\SIolVwxBbR.exe.log, ASCII 9->26 dropped 50 Writes to foreign memory regions 9->50 52 Allocates memory in foreign processes 9->52 54 Injects a PE file into a foreign processes 9->54 13 aspnet_compiler.exe 9->13         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 13->56 58 Maps a DLL or memory area into another process 13->58 60 Sample uses process hollowing technique 13->60 62 2 other signatures 13->62 16 wscript.exe 13->16         started        19 explorer.exe 13->19 injected process8 dnsIp9 34 Modifies the context of a thread in another process (thread injection) 16->34 36 Maps a DLL or memory area into another process 16->36 38 Tries to detect virtualization through RDTSC time measurements 16->38 22 cmd.exe 1 16->22         started        28 www.france-ais.com 217.160.0.150, 49779, 80 ONEANDONE-ASBrauerstrasse48DE Germany 19->28 30 www.marcopolotogo.com 74.208.236.196, 49786, 80 ONEANDONE-ASBrauerstrasse48DE United States 19->30 32 10 other IPs or domains 19->32 40 System process connects to network (likely due to code injection or exploit) 19->40 signatures10 process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac/
Threat name:
ByteCode-MSIL.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 08:34:22 UTC
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hmzttrnn6yquiudfeeeohtzrekixggo2zbiwoseijn7sp5bktgwa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1aa89074af39244a69ae04905a4f959cb59d567abbbb7ab76407c2fa34a8f59b
Formbook
2a4415721925c12ce8a80719697ffbda5daf88fe34804b0549bc5d5605790cdb
Formbook
61f0f1442cc29e258378687f8a03c7b5a07785bcffe03aa4fb8a308246060ca5
Formbook
77b03002cab8c788a323846f25ff38a86c8a050e805f38533593feffb5b41fe1
Formbook
96077c533e59e3b8cf38826e5e37e35f1f2eb44d356eae6575223158b565198e
Formbook
9b989810b625c75d2d669edbb692f4bfd55684f71f3c082e80609ee68e4fe06f
Formbook
b0064356457fa098732029fea97f948ca65f40e0848bd55cdd9e26c462b0ee4d
Formbook
c8781b8dca56fa093b3df95c16360b2dc381eadb10b4f9055e11b39f34284749
Formbook
+ 14'577 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:foi3 loader rat
Link:
https://tria.ge/reports/220328-jvdmwahaf7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
7f4524dffa969b1a0a38ae475e39e57f32e12379edbb69131f67d74fe9fa4cb7
MD5 hash:
add956d051187b05f50434cb90567daa
SHA1 hash:
49a592e54833818c611aaf2b4ec14a9365564436
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c70b540a-369c-4c14-a976-7db63c03273f/
Parent samples :
b0064356457fa098732029fea97f948ca65f40e0848bd55cdd9e26c462b0ee4d
3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac
0bd840a10d4463fe31116ce57b0b674a6d10176d910cf7bcd9ba360cfcb9f3a6
d7345ce73fc7ba2e1b2e8176b0fc98295b2613e839506c5ff50992df5d88f38a
9c5ca29eac3a8ed43997df919e47b72be824cb84564310870b30eb74096a5a57
a85ebc25048221b48dfc17183bf6a17b9c8cdadd06743a08af430bd822a0e02d
SH256 hash:
360d7c3d24277b626e74b5cee0f14832cbe6079cf840768d5d8a0c1337c7a6de
MD5 hash:
2e16d0e684bbf7d24fefac8b08247c62
SHA1 hash:
a44f8ed2f014cf646172c993b856f0cda85bb1dd
Link:
https://www.unpac.me/results/c70b540a-369c-4c14-a976-7db63c03273f/
SH256 hash:
3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac
MD5 hash:
818109bbfd025ef72c7cb41006ff9e6a
SHA1 hash:
7d1121f65e9c65b5185131d44a4674fdaf93ee6e
Link:
https://www.unpac.me/results/c70b540a-369c-4c14-a976-7db63c03273f/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3b3339c5adf6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac

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.

Web download

Formbook

Executable exe 3b3339c5adf6214450652108e3cf3122917319dac8516748884b7f27f42a99ac

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2116984/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/258482/

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