MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7. 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
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SHA256 hash: 1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7
SHA3-384 hash: 3e08c4bdfe7247c6a146edc87f91d0283224e8bfd763017f6f35651048bf27f71e46b1cb2bd0ecaee7c12b2b5e02d668
SHA1 hash: 39ba0ae29913ceb43b1f7532e606d010cabda307
MD5 hash: e087348080ded6a95d4467495d861891
humanhash: yankee-sweet-march-jig
File name:PO-57119-pdf.exe
Download: download sample
Signature Formbook
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File size:474'624 bytes
First seen:2022-02-02 20:15:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:WVO7JKz15JlJX7BuMEoC0nwQQkHtZW9U7XT:WVOVq15J7FBpC0wkzW9oXT
TLSH T127A4AEB4A1A78690F50B89B4257CF97402B330E3A9C90D3957797641CFEEE543E8864F
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
165
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/230666/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook obfuscated packed
Link:
https://www.filescan.io/uploads/61fae64d6d25ac9e79fe21de/reports/26a20d67-2123-4cd5-917b-64c5f2565958/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/a82b9777-c36e-4a18-8783-f280de0c8eb3
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/932870
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
Self deletion via cmd delete
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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 dnsIp2 2 Behavior Graph ID: 565346 Sample: PO-57119-pdf.exe Startdate: 03/02/2022 Architecture: WINDOWS Score: 100 41 www.injurypersonallawyer.com 2->41 43 traff-5.hugedomains.com 2->43 45 hdr-nlb7-aebd5d615260636b.elb.us-east-1.amazonaws.com 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 9 other signatures 2->53 11 PO-57119-pdf.exe 7 2->11         started        signatures3 process4 file5 35 C:\Users\user\AppData\Roaming\imZUcdc.exe, PE32 11->35 dropped 37 C:\Users\user\AppData\Local\...\tmp2EA1.tmp, XML 11->37 dropped 39 C:\Users\user\...\PO-57119-pdf.exe.log, ASCII 11->39 dropped 55 Uses schtasks.exe or at.exe to add and modify task schedules 11->55 57 Adds a directory exclusion to Windows Defender 11->57 59 Tries to detect virtualization through RDTSC time measurements 11->59 15 PO-57119-pdf.exe 11->15         started        18 powershell.exe 24 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 Queues an APC in another process (thread injection) 15->75 22 explorer.exe 15->22 injected 24 conhost.exe 18->24         started        26 conhost.exe 20->26         started        process9 process10 28 WWAHost.exe 22->28         started        signatures11 61 Self deletion via cmd delete 28->61 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
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Link:
https://mwdb.cert.pl/sample/1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-02-02 01:53:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=dntnw34tjnzj6bimjwiwxu4ufytzejerfnlnokpswgkkkoyd273q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:m17y persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220202-y1k2gabddk/
Behaviour
Creates scheduled task(s)
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Deletes itself
Sets service image path in registry
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
ab470fd714fc34133c14152b089ccf3ab67b30bd4b4b2f43641988dae8024d3c
MD5 hash:
4d770b2150ee0e4b34444f7c96e8f33c
SHA1 hash:
1cec212039c7d3758cf562ec504927da36ace1b9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/2908ed85-d9dc-4583-bc84-1e4bd1857003/
Parent samples :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 hash:
705c4288be0f0e85df6cb34302939233b61a7ef0e722c310041617b91303d66c
MD5 hash:
4d9cdbc1aea4ecfd2ee5a3f3f3af652e
SHA1 hash:
b627bff054e232f3cfdd8d0955ae46a28d25229b
Link:
https://www.unpac.me/results/2908ed85-d9dc-4583-bc84-1e4bd1857003/
SH256 hash:
6f1b89bc3013177c101fe4448340c48c0dd08d19017a798bd11c2d0f76be1fbc
MD5 hash:
60a604887b3616e3ed86d81fab0a9ebb
SHA1 hash:
8db84f5f4c569c86c69aff464b2ffc4ce3dafa20
Link:
https://www.unpac.me/results/2908ed85-d9dc-4583-bc84-1e4bd1857003/
SH256 hash:
1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7
MD5 hash:
e087348080ded6a95d4467495d861891
SHA1 hash:
39ba0ae29913ceb43b1f7532e606d010cabda307
Link:
https://www.unpac.me/results/2908ed85-d9dc-4583-bc84-1e4bd1857003/
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/1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7

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 1b66db6f934b729f050c4d916bd3942e279224912b56d729f2b194a53b03d7f7

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/230666/

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