MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626. 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: 20


Intelligence 20 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626
SHA3-384 hash: 9005c46cfefed48c1e067d2c8dd515b4e187f5eb93d4c43d43113ee4eb9af2669ef9df712967643efc9692477d99d1e2
SHA1 hash: e1b6a0133717759f4eff3072b3930996004df498
MD5 hash: 37deb8c1285c7787fe88a51b5064a435
humanhash: video-one-one-stairway
File name:RFQOCEAN5645457788.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:715'272 bytes
First seen:2024-09-02 07:04:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:aGZKzvFdBKYvI8TNmO6y4l22pStzZrwV7FD+j6o7jTFUNPkR:EdO6NN74lj8zRwV7AXnFUNK
TLSH T16EE402982A49D616C5515BB95AF4E2BA4F7C2EDDA802C3075FECAEEF7C71F504D00282
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
File icon (PE):PE icon
dhash icon 00c4fce4d4dcc400 (3 x SnakeKeylogger, 3 x AgentTesla, 3 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
388
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RFQOCEAN5645457788.scr
Verdict:
Malicious activity
Analysis date:
2024-09-02 07:13:29 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/6dc8e7a1-4ec6-40e9-917a-cf2266e5c934

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.17399.31375.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d563a2ad7abf2db5cfd303
Tags:
Encryption Execution Static Stealth Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Adding an exclusion to Microsoft Defender
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay packed
Link:
https://www.filescan.io/uploads/66d563a1cf394bc42d268dda/reports/03569ed6-14e4-49db-9c47-f5fbed5013a7/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626
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/722d526a-ba93-40f4-aa8e-09d2d13c66b3
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1502763
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
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
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1502763 Sample: RFQOCEAN5645457788.scr.exe Startdate: 02/09/2024 Architecture: WINDOWS Score: 100 35 www.xrmxfh150.xyz 2->35 37 www.weetindulgencepro.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 Antivirus detection for URL or domain 2->45 49 11 other signatures 2->49 11 RFQOCEAN5645457788.scr.exe 4 2->11         started        signatures3 47 Performs DNS queries to domains with low reputation 37->47 process4 file5 33 C:\Users\...\RFQOCEAN5645457788.scr.exe.log, ASCII 11->33 dropped 59 Writes to foreign memory regions 11->59 61 Allocates memory in foreign processes 11->61 63 Adds a directory exclusion to Windows Defender 11->63 65 Injects a PE file into a foreign processes 11->65 15 RegSvcs.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 75 3 other signatures 15->75 20 explorer.exe 76 1 15->20 injected 73 Loading BitLocker PowerShell Module 18->73 22 WmiPrvSE.exe 18->22         started        24 conhost.exe 18->24         started        process9 process10 26 wlanext.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:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626/
Threat name:
Win32.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-09-02 06:52:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zbiavx2tdcvefzop5hlo7ymngkctrjwywntwlvuiedjlthb4syta._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m49z discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240902-hwhgsawcje/
Behaviour
Enumerates system info in registry
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
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/db714e19-876e-4b0b-9a78-224afeedbee2
Unpacked files
SH256 hash:
cc21fb5176f80fe8675dc53593d7d5f16c9281b8cbd4c27d57efec1a0cf8c7ca
MD5 hash:
ab19ef006b00391a9f0a2bcd6504bdf1
SHA1 hash:
11bb9760e7f3ee292467327ae5a2c3f22748f4a4
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
Link:
https://www.unpac.me/results/931348ae-f909-47ac-acb7-e613ddf487c9/
Parent samples :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 hash:
8f3e8fb00b864b774ba1ff591b4d2f29d04cf4fea45e179f39309b984a92093c
MD5 hash:
d0223abc16917fd6ab9a529f597cc431
SHA1 hash:
6de268dcad66b83e126c39b7cb8aaec020d64dcb
Link:
https://www.unpac.me/results/931348ae-f909-47ac-acb7-e613ddf487c9/
SH256 hash:
c36ea2eb5c5ce3b878a306b2d76b88b1557abd70e9dda7f6f29b46383744a20a
MD5 hash:
413347f8a359dd31e48156befec1001b
SHA1 hash:
1e7ecee614a9791aaee25b88721686eb810d491c
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/931348ae-f909-47ac-acb7-e613ddf487c9/
SH256 hash:
c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626
MD5 hash:
37deb8c1285c7787fe88a51b5064a435
SHA1 hash:
e1b6a0133717759f4eff3072b3930996004df498
Link:
https://www.unpac.me/results/931348ae-f909-47ac-acb7-e613ddf487c9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c8500adf5318/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 c8500adf5318aa42e5cfe9d6efe18d328538a6d8b36765d68820d2b99c3c9626

(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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