MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e
SHA3-384 hash: 20eb870cb33a8eb7a7c23c814715855b74ef59213cc9644f03c8746a6484f13d5f30d61412c1ed92f4bc6fe56b00c958
SHA1 hash: 3209f7bd27089b0c95c32fbe8846965f714f4fdf
MD5 hash: 51467470255a8544f799355fe2418251
humanhash: hamper-blossom-shade-massachusetts
File name:boleto de pagamento.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:415'232 bytes
First seen:2022-02-06 08:50:46 UTC
Last seen:2022-02-06 09:11:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:RH9QpXAuCk6vvUkCxIxCL7CxeMB9fW3DZ/EaT9jsDDDgPUXV7yTat:h9QpwxDNcWxeKOBfuiU
TLSH T19094E0B0B0D789A0F42BD975A2BCFCE5027233E399DB4A14172C66005FE5F59AE5890F
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
boleto de pagamento.exe
Verdict:
Malicious activity
Analysis date:
2022-02-06 09:05:14 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/5748b99d-a50f-454e-a103-ed7d532ae300

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/233760/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61ff8bfea72f86da69613651/reports/98f3d45c-7e59-45ed-bbd6-49c800ee7d49/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0771629e-88cb-4b8f-93e9-44474e9ec51a
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/934698
Signature
Adds a directory exclusion to Windows Defender
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 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)
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
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: 567176 Sample: boleto de pagamento.exe Startdate: 06/02/2022 Architecture: WINDOWS Score: 100 43 www.tectoniclondon.net 2->43 45 ghs.googlehosted.com 2->45 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 15 other signatures 2->53 11 boleto de pagamento.exe 7 2->11         started        signatures3 process4 file5 35 C:\Users\user\AppData\Roaming\LGBKaHx.exe, PE32 11->35 dropped 37 C:\Users\user\...\LGBKaHx.exe:Zone.Identifier, ASCII 11->37 dropped 39 C:\Users\user\AppData\Local\...\tmpF0AB.tmp, XML 11->39 dropped 41 C:\Users\user\...\boleto de pagamento.exe.log, ASCII 11->41 dropped 55 Writes to foreign memory regions 11->55 57 Allocates memory in foreign processes 11->57 59 Adds a directory exclusion to Windows Defender 11->59 61 Injects a PE file into a foreign processes 11->61 15 RegSvcs.exe 11->15         started        18 powershell.exe 25 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 22 explorer.exe 15->22 injected 24 conhost.exe 18->24         started        26 conhost.exe 20->26         started        process9 process10 28 wscript.exe 22->28         started        signatures11 63 Modifies the context of a thread in another process (thread injection) 28->63 65 Maps a DLL or memory area into another process 28->65 67 Tries to detect virtualization through RDTSC time measurements 28->67 31 cmd.exe 1 28->31         started        process12 process13 33 conhost.exe 31->33         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-02-05 14:19:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ecm5gehv7q6rmh5nrw2fuhunkvianbuyohks4br4a5qcqskvw5pa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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/220206-kr6d6ahbap/
Behaviour
Creates scheduled task(s)
Gathers network information
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Checks computer location settings
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/3601bcde-e8db-4dcd-ac6c-ab3cfd5298a8/
Parent samples :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 hash:
0cc119786b104cf0aa261a208bf38802b339774ff3d7a42afcd8329d2d7d21c9
MD5 hash:
263b5190f7ac42d83c756dcdf38147bb
SHA1 hash:
78f419fe3936ed7d603706c47230cd3e6ff79ffe
Link:
https://www.unpac.me/results/3601bcde-e8db-4dcd-ac6c-ab3cfd5298a8/
SH256 hash:
bea692323c83c527907b34f7d680382cd987ed906c1fb7e7993e469c440738a5
MD5 hash:
0a0133d436dbe1587f5343411426ebed
SHA1 hash:
0335d8c02b90f170955b318d1112baea8e7ff879
Link:
https://www.unpac.me/results/3601bcde-e8db-4dcd-ac6c-ab3cfd5298a8/
SH256 hash:
2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e
MD5 hash:
51467470255a8544f799355fe2418251
SHA1 hash:
3209f7bd27089b0c95c32fbe8846965f714f4fdf
Link:
https://www.unpac.me/results/3601bcde-e8db-4dcd-ac6c-ab3cfd5298a8/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/2099d310f5fc/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
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Rule name:Skystars_Malware_Imphash
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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 2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/233760/

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