MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418. 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: 17


Intelligence 17 IOCs YARA 5 File information Comments
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SHA256 hash: bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
SHA3-384 hash: 4f418f4cd3d12303fbfa8166092d2e05e5f4395f34c13f244013c7e023864185435b1b867f6e85219d4a2870e4e10875
SHA1 hash: 022af44b15b363305ce6dd59c4d91b915c6e827f
MD5 hash: 0a2d4c92a9fcf85e1a8a9083cddd13e5
humanhash: maryland-twelve-victor-uncle
File name:E-dekont.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:771'584 bytes
First seen:2024-10-09 10:55:02 UTC
Last seen:2025-01-10 14:07:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:zTLdI7cVxnScO5GLOftnkqXGNLou7DstwZelvE7pCmNS8T9VC0ymE:nhI74xnpO5GLOfyqXCLR71eu7pCmNS8G
Threatray 214 similar samples on MalwareBazaar
TLSH T15AF4BE1476948FA3DA7487F57872E07013FC1EAEA41EE2555DC17EEBB9A2F008960E43
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
388
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
E-dekont.pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-10-09 10:55:57 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/b000754d-c501-4c80-b4f1-6cadd3c245e2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Dropper.Nanocore-10025638-0
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6706610cf936b5621b0bc54c
Tags:
Powershell Underscore
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/670661082026394dae849f27/reports/4fab3b4b-cd4c-4d9a-9010-72a0d5087dc4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
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/3bbbd720-4fdc-4261-aeba-d0766af5b00d
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1529819
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Loading BitLocker PowerShell Module
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1529819 Sample: E-dekont.pdf.exe Startdate: 09/10/2024 Architecture: WINDOWS Score: 100 35 www.tyhbv.xyz 2->35 37 www.nder168.xyz 2->37 39 9 other IPs or domains 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 49 11 other signatures 2->49 11 E-dekont.pdf.exe 4 2->11         started        signatures3 47 Performs DNS queries to domains with low reputation 37->47 process4 file5 33 C:\Users\user\...-dekont.pdf.exe.log, ASCII 11->33 dropped 59 Adds a directory exclusion to Windows Defender 11->59 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Switches to a custom stack to bypass stack traces 11->63 15 E-dekont.pdf.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 73 2 other signatures 15->73 20 explorer.exe 55 1 15->20 injected 71 Loading BitLocker PowerShell Module 18->71 22 WmiPrvSE.exe 18->22         started        24 conhost.exe 18->24         started        process9 process10 26 svchost.exe 20->26         started        signatures11 51 Modifies the context of a thread in another process (thread injection) 26->51 53 Maps a DLL or memory area into another process 26->53 55 Tries to detect virtualization through RDTSC time measurements 26->55 57 Switches to a custom stack to bypass stack traces 26->57 29 cmd.exe 1 26->29         started        process12 process13 31 conhost.exe 29->31         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeylogger
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Status:
Malicious
First seen:
2024-10-09 10:56:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xtny2iedvyphzx2yss746qi43rpdsbmzohculz2ikvcnkxbzcqma._file
Verdict:
malicious
Label(s):
formbook
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unknown_loader_037
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Similar samples:
435424456ff6964a551a626db39ad606b58644f6ae9189e1e590aec8d645c397
Formbook
7451a072b5a69adc90d6153c699a926336d27a28b0ef8502d0eae3f790ebe942
Formbook
78b3e10f355de8a780c69cc622dd3bc529365ff5fa141eb291112ee7b2ef2a94
Formbook
a2780a43ac1e90a6945c78cbcbd929863ab89c72ff1f86380f48303d051bc7d4
Formbook
bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
Formbook
error
Formbook
+ 204 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m10i discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/241009-mz4lmssdnq/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
formbook
YARA:
n/a
Link:
https://app.threat.zone/submission/80b4f958-8f0a-4489-b0cf-e5b079ac20e6
Unpacked files
SH256 hash:
1114a7227f132fb8868b8d02718a4245a8c1afb2721eed0598fdc3b2050a6e83
MD5 hash:
5a4c8829135a1e62c4ccb8ff654d6955
SHA1 hash:
8cc91bee70c208c9ed0b2b2f9ad56030e9228456
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/12b89a6a-458e-4a78-bb4a-f85d3f03c484/
Parent samples :
47155987c94e0b921887ed3aa2278fb857781238c518fbea52224728b88b0436
1d5c6a9f196dc3d9f2e483744d7b872f01a96b8320ce3ffdc66b66542cb7a899
0e95933b378d0fbe6e132bab051ab9a3ab4fa3332828e72a0133749c1150b79f
462338cc416f17bb48135254e384d49b87dde3f0c40e6c51a70ad7abdecfc231
bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
SH256 hash:
c652cee2103253720cc7ac2c3b1b52286b0ca709a836ad45fc8b8307a82c8e4e
MD5 hash:
532a055f9254181eaf5f0a138bb565a2
SHA1 hash:
75949d2e8ef10176a623a1b071299ba7baecc5af
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/12b89a6a-458e-4a78-bb4a-f85d3f03c484/
SH256 hash:
682c261fcd08c676ef231f46eac1c054c8df17522846b9e4adbafb62e8482dab
MD5 hash:
5a6cead6de3340dd9e0b16d599e5d1f5
SHA1 hash:
00e25f93284ff0d2493c6df3a596891d0848399e
Link:
https://www.unpac.me/results/12b89a6a-458e-4a78-bb4a-f85d3f03c484/
SH256 hash:
bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418
MD5 hash:
0a2d4c92a9fcf85e1a8a9083cddd13e5
SHA1 hash:
022af44b15b363305ce6dd59c4d91b915c6e827f
Link:
https://www.unpac.me/results/12b89a6a-458e-4a78-bb4a-f85d3f03c484/
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/bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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 bcdb8d2083ae1e7cdf5894bfcf411cdc5e39059971c545e7485544d55c391418

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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