MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc
SHA3-384 hash: 25c1f37f021a616b4c430c4a239199f055fde6ff6bea058c9e70749d24ccb998eb60f3249a0721e3164f2562bf0a0f99
SHA1 hash: 8e3eefb9a9ee6759ad96325971aaf54d9cf98575
MD5 hash: 5ed8f58873e6537bc9a5bd97d18425b9
humanhash: mike-friend-autumn-mountain
File name:obizx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'043'968 bytes
First seen:2021-10-07 19:12:38 UTC
Last seen:2021-10-07 20:01:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:T+x0eYDyL9pD3n+0SLVvCoKl9PZYIng4E/xfuduwjszfH:SU+L7D3+1LJCoKPPZYIn7ll
TLSH T1D425F7003295C611D1B637F5D861CAF097656C45EA29C28B2DF1BEEB7971B03CE01AAF
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
309
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
obizx.exe
Verdict:
Malicious activity
Analysis date:
2021-10-07 19:20:05 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/a9d6d49d-fd9c-4525-85cd-8542adf3d160

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/195944/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.14644.11674.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
monero obfuscated packed
Link:
https://www.filescan.io/uploads/615f46bfb95458900cde6f62/reports/f1ea7c21-636c-4a1f-9740-537b7ffc7104/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/02ae0d77-c5fb-479c-9423-172e144148eb
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/866660
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 499088 Sample: obizx.exe Startdate: 07/10/2021 Architecture: WINDOWS Score: 100 36 www.rochx7.com 2->36 38 www.erwoodrefinishing.com 2->38 40 2 other IPs or domains 2->40 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 5 other signatures 2->50 11 obizx.exe 3 2->11         started        signatures3 process4 signatures5 60 Tries to detect virtualization through RDTSC time measurements 11->60 62 Injects a PE file into a foreign processes 11->62 14 obizx.exe 11->14         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.sangaltd.com 162.214.203.113, 49823, 80 UNIFIEDLAYER-AS-1US United States 17->30 32 www.charmlnd.com 17->32 34 parkingpage.namecheap.com 198.54.117.212, 49797, 80 NAMECHEAP-NETUS United States 17->34 42 System process connects to network (likely due to code injection or exploit) 17->42 21 help.exe 17->21         started        24 autochk.exe 17->24         started        signatures10 process11 signatures12 52 Self deletion via cmd delete 21->52 54 Modifies the context of a thread in another process (thread injection) 21->54 56 Maps a DLL or memory area into another process 21->56 58 Tries to detect virtualization through RDTSC time measurements 21->58 26 cmd.exe 1 21->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-10-07 19:11:24 UTC
AV detection:
11 of 27 (40.74%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=365y3qjyjcshmp655yf6srav56jyovlfnrkoh4krtfpc2uhskhoa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:fkt8 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211007-xw29hsdafq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.grampianscottages.com/fkt8/
Unpacked files
SH256 hash:
135c9f3c8f8092d70cec25ed29f7b1666846d088d0ff91fa2625928207133c99
MD5 hash:
8c9e4251ca98659375a95984eeeaddfc
SHA1 hash:
a00deb7a98ebc35e52c828a350ebbfd4c21edc34
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9f50620d-1f11-48f7-bc2f-d48e055d362b/
Parent samples :
eb39b7952714c4a7c7fbfc68a077ef0a2dd31c24da35078da08bcfc0b1e2ff32
5cbb6ffeafe0a54df3243d3c730168b51e8cf6750cf9355b164c2dd554af609e
ff64ff314c7947e5faae8181ac818b124a6d17d0fc3a66e8777a78a613d6093c
dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc
c32b5b1c2a90a6a38f7dc2dcb4541c111fa1ddc39eab5f0173205aa4079cbc5e
2776237004407d8c72906ce72050cda1b0d9abeb20e313abf7a98e6fea03ce8d
SH256 hash:
d434e7cb4105d7e760a39a1a8a1306338b00fbd6507025d53e4c44ede73d3788
MD5 hash:
6613b992e916924c3f38a179bb9866ab
SHA1 hash:
cd5741f4d0a4685c5fd9c9e2e708bbf33ec1691a
Link:
https://www.unpac.me/results/9f50620d-1f11-48f7-bc2f-d48e055d362b/
SH256 hash:
40a70bd88091f8b34467914d2ff4ead7293b3e91a4e27c69a15442dee29a0eaf
MD5 hash:
bc1c9a3d422c505cc469f890ac70abe2
SHA1 hash:
69d736ca7f7a97d71b0f89899c9364add2c307e5
Link:
https://www.unpac.me/results/9f50620d-1f11-48f7-bc2f-d48e055d362b/
SH256 hash:
dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc
MD5 hash:
5ed8f58873e6537bc9a5bd97d18425b9
SHA1 hash:
8e3eefb9a9ee6759ad96325971aaf54d9cf98575
Link:
https://www.unpac.me/results/9f50620d-1f11-48f7-bc2f-d48e055d362b/
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/dfbb8dc13848a4763fddee0be94415ef938755656c54e3f151995e2d50f251dc

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
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
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/195944/
  
URLhaus
https://urlhaus.abuse.ch/url/1660129/

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