MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b28bf0284c17773dc7c6b76672fe226983ca555562d9fcc037f6eaf714fa5d10. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b28bf0284c17773dc7c6b76672fe226983ca555562d9fcc037f6eaf714fa5d10
SHA3-384 hash: 27f1cdcb0b2dfe1f3a8fabfadc20ccc4df8863f073f9b6d2d1f61a8980bf5dae4b885b6ed58dc011f4e8fec78ce28bad
SHA1 hash: 0b48001265684ff7088822a8f86adc388ce7e5db
MD5 hash: dd5c0664e317b3911075ed744eaa7951
humanhash: virginia-blossom-solar-magazine
File name:confirmación de pago.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:528'384 bytes
First seen:2022-02-07 06:47:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:yeMlVoIbj11gj3PUA6ZFKISROHEpDcRoAOfqYCPVAvUPfqyWFxP38wN7yTa:QVoSgjPUxZdEeRyfqBPVUVsw
Threatray 10'117 similar samples on MalwareBazaar
TLSH T19DB4C09039B95FA1E57E8BF8212D7CA007F0316F94EAE51F0ED961C56AA4F412E44E0F
File icon (PE):PE icon
dhash icon c8d6d6d4dcd8d9c8 (5 x AgentTesla, 4 x Formbook, 3 x Loki)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
143
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
confirmación de pago.exe
Verdict:
Malicious activity
Analysis date:
2022-02-07 07:05:29 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/c66ac4aa-3837-43fb-be55-de46ab255861

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/234029/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware obfuscated packed
Link:
https://www.filescan.io/uploads/6200c0a7fdec0968c37da81f/reports/65ae53db-6ad4-4cf6-b3cb-ce4889ee5d36/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/07cacf44-39d4-4c26-8721-fd1e8ac73216
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/934901
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 567379 Sample: confirmaci#U00f3n de pago.exe Startdate: 07/02/2022 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 12 other signatures 2->50 10 confirmaci#U00f3n de pago.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming36wGYYO.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmpCA47.tmp, XML 10->38 dropped 40 C:\...\confirmaci#U00f3n de pago.exe.log, ASCII 10->40 dropped 54 Adds a directory exclusion to Windows Defender 10->54 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 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 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 42 www.zschengbangzx.com 21->42 52 System process connects to network (likely due to code injection or exploit) 21->52 29 explorer.exe 21->29         started        signatures10 process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 29->56 58 Maps a DLL or memory area into another process 29->58 60 Tries to detect virtualization through RDTSC time measurements 29->60 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b28bf0284c17773dc7c6b76672fe226983ca555562d9fcc037f6eaf714fa5d10/
Threat name:
ByteCode-MSIL.Trojan.SpyNoon
Create hunting rule
Status:
Malicious
First seen:
2022-02-04 13:37:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkf7akcmc53t3r6gw5thf7rcngb4uvkvmlm7zqbx63vpofh2luia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0e8333bd57ef2ac051d65249e88b4fbc2e648951e5e417cc807bb9e23edffab1
Formbook
2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e
Formbook
4c5d57b063eeb8b59a0d22007e4698b75e7f16d2144636fd0610661a733b5b1b
Formbook
76c2944d78f0dac034e5a7cc6a916c30e66a88aaaaf3481b9af71db7bcdf9ca6
Formbook
79cb41c5d286b5e8062a31de81a893f221a8ea7bc887a74030b3802dbf5bc619
Formbook
d22129107a8e45e8ceb11ea395c1279d4617d37a5846841b35ae06c6c08e170c
Formbook
dcec29b67b720887c02915f7eb210942445a64e450f03bf12ca03ed345bc300a
Formbook
e5938a9efbdbf0a81790e0287b086b4a322b756db37ec4006419a6ada47073be
Formbook
+ 10'107 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:gn27 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220207-hks45sgfgp/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
4af67fe719b6d568f75355ea4ea17bb40829338b1808924bdfdb00983879116d
MD5 hash:
de9a3c641eee60c823d76777dc7dfff7
SHA1 hash:
0eed800b61726aef17a63451f1c43dd844a58b29
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/069fcac1-0de7-49d6-9ed7-81e9184e1f73/
Parent samples :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 hash:
0cc119786b104cf0aa261a208bf38802b339774ff3d7a42afcd8329d2d7d21c9
MD5 hash:
263b5190f7ac42d83c756dcdf38147bb
SHA1 hash:
78f419fe3936ed7d603706c47230cd3e6ff79ffe
Link:
https://www.unpac.me/results/069fcac1-0de7-49d6-9ed7-81e9184e1f73/
SH256 hash:
77693ba7dbb6b8e5c3401d54423fb0e7a9a66f2538639861659a4b650c7ad2e6
MD5 hash:
895f84ea6bd66418c897f3a0aa75662e
SHA1 hash:
19aa321bf6e7a83e086c5c651de614ba20b0da97
Link:
https://www.unpac.me/results/069fcac1-0de7-49d6-9ed7-81e9184e1f73/
SH256 hash:
b28bf0284c17773dc7c6b76672fe226983ca555562d9fcc037f6eaf714fa5d10
MD5 hash:
dd5c0664e317b3911075ed744eaa7951
SHA1 hash:
0b48001265684ff7088822a8f86adc388ce7e5db
Link:
https://www.unpac.me/results/069fcac1-0de7-49d6-9ed7-81e9184e1f73/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b28bf0284c17/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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
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.

Malspam

Formbook

Executable exe b28bf0284c17773dc7c6b76672fe226983ca555562d9fcc037f6eaf714fa5d10

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/234029/

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