MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c3f224cf0567bbd99154105d471e29b60f5e5c0afb2683be992c9f702a7e7d9. 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: 8c3f224cf0567bbd99154105d471e29b60f5e5c0afb2683be992c9f702a7e7d9
SHA3-384 hash: e87817912693da44167bd5d72263bd7e48ce1cc4c1434c5f6b40bde0bf7e113c9df8e52932eafd870dc109b27fb6724d
SHA1 hash: e832dab0dcc66e8afc4b0ddd4748893386d10e68
MD5 hash: 79488bd73bf0e3f4d2e4b87c3e3b3fc2
humanhash: rugby-berlin-zebra-thirteen
File name:налог за купување pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:776'192 bytes
First seen:2022-02-21 10:50:06 UTC
Last seen:2022-02-22 10:01:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:F5Bby0chFFQWNp4FwlcnQccckwPtaN1C1AziOukM3yjO19VtVc82OcPTck3q2DJk:ZbHchFH4FwHNcTPx1A2OuX8O68QYk3bk
Threatray 10'258 similar samples on MalwareBazaar
TLSH T156F4DFEC28BB11F8F3268EBE5DDCE5B0CE79E2256504E4BD78D91F510B41B4889D123A
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
217
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/242932/
Detection(s):
SecuriteInfo.com.MachineLearning.Anomalous.94.24751.12650.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62136e60a2660f3bb91a1db9/reports/2f9083e3-187f-44d7-adb0-43d6e4a66344/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/6703254f-ae80-4295-b4af-5348c1e32692
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/943162
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
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
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 575640 Sample: #U043d#U0430#U043b#U043e#U0... Startdate: 21/02/2022 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 15 other signatures 2->52 10 #U043d#U0430#U043b#U043e#U0433 #U0437#U0430 #U043a#U0443#U043f#U0443#U0432#U0430#U045a#U0435 pdf.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\...\IQfmzLFAOrI.exe, PE32 10->36 dropped 38 C:\Users\...\IQfmzLFAOrI.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmpB370.tmp, XML 10->40 dropped 42 #U043d#U0430#U043b...a#U0435 pdf.exe.log, ASCII 10->42 dropped 56 Writes to foreign memory regions 10->56 58 Allocates memory in foreign processes 10->58 60 Adds a directory exclusion to Windows Defender 10->60 62 Injects a PE file into a foreign processes 10->62 14 RegSvcs.exe 10->14         started        17 powershell.exe 23 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 70 Modifies the context of a thread in another process (thread injection) 14->70 72 Maps a DLL or memory area into another process 14->72 74 Sample uses process hollowing technique 14->74 76 2 other signatures 14->76 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 44 www.metaaiqr.com 21->44 54 System process connects to network (likely due to code injection or exploit) 21->54 29 control.exe 21->29         started        signatures10 process11 signatures12 64 Modifies the context of a thread in another process (thread injection) 29->64 66 Maps a DLL or memory area into another process 29->66 68 Tries to detect virtualization through RDTSC time measurements 29->68 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/8c3f224cf0567bbd99154105d471e29b60f5e5c0afb2683be992c9f702a7e7d9/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-02-21 10:51:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rq7sethqkz533giviec5i4pctnqplzoav6zgqo7jsle7oavh47mq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2e3fd0cf4b98695538a9c744e1961b63ec166fe3c02719560fedaddcd0fde689
Formbook
388292015e4c2d075b935a8299d99335d957e3ad5134a33f28c4dc7f5e3687c5
Formbook
6b2b7fcb8171b3701611515a82b2ac37c9a3c7cbe2d2b2a80b7212cb3402392c
Formbook
81afd7e5620fcab2ffaa8d814a7aed9ffeccf72199bda56b3db0d0ab90a95d6e
Formbook
a1898d136a9170f36c288695304d0766c83537a240bfc66cd6ef65ad1332cd56
Formbook
be2397660bbc564e7da637c9f08134cf4decad4085f71e29d0d3240b6bf7220b
Formbook
de84b70d7248de297cf2ab2cfe38eff4b41d558551db8a4b4d3399dbf480f103
Formbook
e649ef1ecf0e0daefe140fa78271435271c8d55607f8365ddef4d94b66bfdfdd
Formbook
+ 10'248 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:g2m3 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220221-mxbsvaaaap/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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:
c5b71db9f1b9cd63452ad836762bf1381ddf0a833df8ce17a3439ae9e92178cb
MD5 hash:
681a48e3a833b98293bebb8f47b2fc3d
SHA1 hash:
610f31e10da0f45fa658594f784eba651b99bee1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/af62ca5c-f1d5-47d2-8862-bbb65ad9ba10/
Parent samples :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 hash:
107bd9ad300d99f4f925e8cd1a7f183e2759ae2e6ba77bc5acb0be785a42b82d
MD5 hash:
e53fe16b908250ff4984dd237f5a1984
SHA1 hash:
c8b26f7d7ac14af957be9f3b382f7b9de76f0355
Link:
https://www.unpac.me/results/af62ca5c-f1d5-47d2-8862-bbb65ad9ba10/
SH256 hash:
e33254e2ad4d279914a29450f98d1750a9f513fc8ddb853e0dd8346b805faa43
MD5 hash:
b597cce7bfc65e56fa69ebb7f413a33f
SHA1 hash:
7ee40df5ac783432e7c9f7be4f7ed1f286345d58
Link:
https://www.unpac.me/results/af62ca5c-f1d5-47d2-8862-bbb65ad9ba10/
SH256 hash:
d0883a9a35246b639d48565d39568b4fb3584195d9467dc9b487995f3e83bf13
MD5 hash:
6a83dd146dc95ce6c435ac06f721c35b
SHA1 hash:
6176bba7f769b4692d22a2645c9543c62292350b
Link:
https://www.unpac.me/results/af62ca5c-f1d5-47d2-8862-bbb65ad9ba10/
SH256 hash:
8c3f224cf0567bbd99154105d471e29b60f5e5c0afb2683be992c9f702a7e7d9
MD5 hash:
79488bd73bf0e3f4d2e4b87c3e3b3fc2
SHA1 hash:
e832dab0dcc66e8afc4b0ddd4748893386d10e68
Link:
https://www.unpac.me/results/af62ca5c-f1d5-47d2-8862-bbb65ad9ba10/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8c3f224cf056/report/overview.html
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/8c3f224cf0567bbd99154105d471e29b60f5e5c0afb2683be992c9f702a7e7d9

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.

Cape
Cape
https://www.capesandbox.com/analysis/242932/

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