MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
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SHA256 hash: 37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
SHA3-384 hash: d9fd08cc9cb046b8a1d1ce4881fcf2c8c31623b7f04890c6c2707926415d171156323880e2e7d6c0f6b07d47beaff8bf
SHA1 hash: bb9efb7f0ce6d4e776088883864cd9e4e2b59ac9
MD5 hash: d324b2d6b55bf0e5b7bbed06e4fb8e7a
humanhash: eleven-fix-nuts-queen
File name:rPO42085701.exe
Download: download sample
Signature Formbook
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File size:593'408 bytes
First seen:2024-03-04 23:33:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:L9GuPRy0VGadacqRwteYwhyyPPt0SBXQ/00FHDVFdF9Gh:BdPRy0VNacqRNFtPmmXWjJF9
TLSH T14AC4232A53788956E83C0B78F7B0A839437056692C55EB7E0E8E318A3DD37540BE5F27
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)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
374
Origin country :
BR BR
Vendor Threat Intelligence
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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SecuriteInfo.com.Trojan.Packed2.46320.1465.30352.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65e65a6c95e2f0fb7a8c4e71/reports/c8068982-eafa-4dc4-9a31-1b43aae976b6/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
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/95d3bda4-5194-4b11-bd0f-997be61a5d5a
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1403068
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
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 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1403068 Sample: rPO42085701.exe Startdate: 05/03/2024 Architecture: WINDOWS Score: 100 38 www.stylistandcojewelry.com 2->38 40 www.rokabell.site 2->40 42 9 other IPs or domains 2->42 50 Snort IDS alert for network traffic 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 11 other signatures 2->56 11 rPO42085701.exe 4 2->11         started        signatures3 process4 signatures5 60 Adds a directory exclusion to Windows Defender 11->60 62 Tries to detect virtualization through RDTSC time measurements 11->62 64 Injects a PE file into a foreign processes 11->64 14 rPO42085701.exe 11->14         started        17 powershell.exe 23 11->17         started        19 rPO42085701.exe 11->19         started        21 rPO42085701.exe 11->21         started        process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 Queues an APC in another process (thread injection) 14->72 23 explorer.exe 89 1 14->23 injected 27 WmiPrvSE.exe 17->27         started        29 conhost.exe 17->29         started        process8 dnsIp9 44 www.2023082635-stripe.com 91.195.240.123, 49724, 80 SEDO-ASDE Germany 23->44 46 www.girl8.site 192.74.233.8, 49717, 80 PEGTECHINCUS United States 23->46 48 4 other IPs or domains 23->48 58 System process connects to network (likely due to code injection or exploit) 23->58 31 chkdsk.exe 23->31         started        signatures10 process11 signatures12 74 Modifies the context of a thread in another process (thread injection) 31->74 76 Maps a DLL or memory area into another process 31->76 78 Tries to detect virtualization through RDTSC time measurements 31->78 34 cmd.exe 1 31->34         started        process13 process14 36 conhost.exe 34->36         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2024-03-04 07:30:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g64hkaibtedfrqrl7wdco3a3rlugwyt2icwfxdhcbontawr76rsq._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:ki21 rat spyware stealer trojan
Link:
https://tria.ge/reports/240304-3kexqshc92/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
49e4740bda6c13ab67503ed276497089205a297dc2ca2645116b37e1f3b9d0aa
MD5 hash:
73673e1cff8aa4de7fe976521ed74940
SHA1 hash:
958864dcd2ea903319640681b62a5d630b254374
Detections:
FormBook
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win_formbook_w0
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win_formbook_auto
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win_formbook_g0
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Formbook
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Link:
https://www.unpac.me/results/cf849562-4985-477c-a6b8-a6e064d31f1a/
Parent samples :
ac0b1f47f36bdbc8974390d8473d74f6e71d5219a338796ed9d0582f8020f8c7
21a34d80499260fcf691ed16c83da9f3a9d14a7e2299d73d7976112230a98e5a
2a1b5e6dcd2c73e73fa3cdd788771c9f25152cb60d8c8ad186983327f541d0fa
96deb2b04135c0b3d7f7ad059870a3fb2e8aebcf8c260df81f507d8fbe71fb5c
b98dbe3fbbc3aebd02d205d45b61c61d71b83bc8cec5435bb6e5c9b880872f73
37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
2a321e21bd01aa4f0ff4793c7ab4b2bcc01ff89f098b39daa0ba1e335f05ca2a
SH256 hash:
a0fb740d687d226eff4aa41a78aa5441efd4af9505e77e0effb5d26caff84d0d
MD5 hash:
162037d5463b7495709a7defa1401870
SHA1 hash:
fff8f14eec0e72ff60e2e8cfa24d2927f3095075
Link:
https://www.unpac.me/results/cf849562-4985-477c-a6b8-a6e064d31f1a/
SH256 hash:
c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b
MD5 hash:
7c7fb6daa78beb69128991ff893143ed
SHA1 hash:
c01bb99984b12b84129db80eae1d5d8341a358e2
Link:
https://www.unpac.me/results/cf849562-4985-477c-a6b8-a6e064d31f1a/
SH256 hash:
268dbf03a60398a650bfb065e01f1427886182d4c70d6f3749f621b873499f5f
MD5 hash:
dc8c0c40ff163975ccbf106983c3de0e
SHA1 hash:
52d429022f840dac3e2a09092f5472f12850ed80
Link:
https://www.unpac.me/results/cf849562-4985-477c-a6b8-a6e064d31f1a/
SH256 hash:
37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465
MD5 hash:
d324b2d6b55bf0e5b7bbed06e4fb8e7a
SHA1 hash:
bb9efb7f0ce6d4e776088883864cd9e4e2b59ac9
Link:
https://www.unpac.me/results/cf849562-4985-477c-a6b8-a6e064d31f1a/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/37b875010199/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/37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465

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
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Author:malware-lu
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 37b8750101990658c22bfd86276c1b8ae86b627a40ac5b8ce20b9b305a3ff465

(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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