MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38. 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 2 File information Comments
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SHA256 hash: c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38
SHA3-384 hash: 6755d7f9d595f782a024b77cda5e1ae62c77d9268b7f6adf6bc353e0bd4e0c2a036d20b319b17b7aa5d0ec8697c1feb7
SHA1 hash: 0795ec7e2c0d9ed0c4b54b8c11b9a40371e480d8
MD5 hash: 71b447201210581c82cd771b1a890a91
humanhash: kansas-twenty-september-hotel
File name:New Order Sample.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:785'408 bytes
First seen:2022-02-24 07:14:58 UTC
Last seen:2022-02-24 14:00:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:jCS3A17KHLs82rX6SePgO6ZznhvWVNZklQRBPJse6K0K8rZBSunYqXvmVvEJiS6u:OT7o2rX6xin5QE+RBPJsS0K8BSu6p
Threatray 10'405 similar samples on MalwareBazaar
TLSH T130F4CF1039AF20DEF063DBFE9EC8EDB19D6AF13A260D35BA24420F574B49941DE52532
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/244083/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn34.4344.11252.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS 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
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/6217307ea6f52d32f17e74b1/reports/07d550af-382e-4256-988b-7127841898f9/overview
Result
Verdict:
UNKNOWN
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/cd155f1b-4c69-49b7-85eb-7ab0049411e5
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/945813
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
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
Sigma detected: Suspicius Schtasks From Env Var Folder
Tries to detect sandboxes / dynamic malware analysis system (file name check)
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: 578293 Sample: New Order Sample.exe Startdate: 24/02/2022 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 14 other signatures 2->48 10 New Order Sample.exe 7 2->10         started        process3 file4 34 C:\Users\user\AppData\...\scejqccnTuDm.exe, PE32 10->34 dropped 36 C:\Users\...\scejqccnTuDm.exe:Zone.Identifier, ASCII 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmp5C08.tmp, XML 10->38 dropped 40 C:\Users\user\...40ew Order Sample.exe.log, ASCII 10->40 dropped 50 Tries to detect sandboxes / dynamic malware analysis system (file name check) 10->50 52 Adds a directory exclusion to Windows Defender 10->52 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 2 other signatures 14->66 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 raserver.exe 21->27         started        signatures10 54 Modifies the context of a thread in another process (thread injection) 27->54 56 Maps a DLL or memory area into another process 27->56 58 Tries to detect virtualization through RDTSC time measurements 27->58 30 cmd.exe 1 27->30         started        process11 process12 32 conhost.exe 30->32         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-02-24 07:15:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yh3vw55z3k32d6lidqjz4vtk35olyvymq7gcsgfdy2gqi4oehy4a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
070264132f92fc5cb01521385e73bf36954d4093da205c59821e844abed68b5f
Formbook
2084194e47482bf35f4b7c5724d6cf0db56cf4f10811f727a3517579c3985b2c
Formbook
3c010d88a118ba3cc666e05c6f8f82159ac38e5486b5ed60c65d870287b8cff6
Formbook
54cfa1f93d985c0bf952e00247f781f36988dffec0cb8d83f79fa3e41d98b335
Formbook
6ed4597153654e9526d066d62bbf7cc0e7d7e0660049f9e3b826475d3fa71abe
Formbook
918c630d007a2736849aecb7b620b92b99e966d9e4cbfabb4bdd6f1b510f14cd
Formbook
c3e4c2e1e242cf92142f4d4fb1896354cfa07089f40243b31046ff3eae8ac2c8
Formbook
c8dfddd4c5d6b2c5ee3c4f74651673e6975c4ae05d7aece0c08e40c2ad92db7e
Formbook
f9a27387b9b3b02475f1223f3061ff567327432a9a9dc83f91c665fd604ae87c
Formbook
+ 10'395 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:a04s rat spyware stealer trojan
Link:
https://tria.ge/reports/220224-h29s8acbf5/
Behaviour
Creates scheduled task(s)
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
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
Unpacked files
SH256 hash:
a71f4b83e8284b1c622ca510a9a2db7a49930b04851afe3e428fc55d4ef98d3c
MD5 hash:
e42bfb7f851104e94734e4e9f1225a22
SHA1 hash:
53e2b29d72f6b6ea2189f0f6d6d81cfd47effbae
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/abf1e84f-d1c9-406e-89a5-a75db2b75a27/
Parent samples :
388292015e4c2d075b935a8299d99335d957e3ad5134a33f28c4dc7f5e3687c5
c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38
SH256 hash:
35d098bdbfc31a83a76ce1262bdbc8206e7a0210f841de9af692f729503d6cbe
MD5 hash:
9586ffbc8d0ea962e4f66960a91cfb03
SHA1 hash:
78322075917f9b97b1dabd426de83ee5c3e354aa
Link:
https://www.unpac.me/results/abf1e84f-d1c9-406e-89a5-a75db2b75a27/
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/abf1e84f-d1c9-406e-89a5-a75db2b75a27/
SH256 hash:
eeb326d2f508788bc20dafb7448893b1ed8ff1f6d8f01538ee7ade2ab098297f
MD5 hash:
29e22942476769186f3e931436b50105
SHA1 hash:
5074cb5f7e777cb332ccf923afd9163527437dd1
Link:
https://www.unpac.me/results/abf1e84f-d1c9-406e-89a5-a75db2b75a27/
SH256 hash:
c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38
MD5 hash:
71b447201210581c82cd771b1a890a91
SHA1 hash:
0795ec7e2c0d9ed0c4b54b8c11b9a40371e480d8
Link:
https://www.unpac.me/results/abf1e84f-d1c9-406e-89a5-a75db2b75a27/
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/c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38

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 c1f75b77b9dab7a1f9681c139e566adf5cbc570c87cc2918a3c68d0471c43e38

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/244083/

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