MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52. 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 1
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SHA256 hash: 8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52
SHA3-384 hash: 09b2a204f6a70896cbc4c3a77f853a2979202f4f7cf296c901ed9da770ff6384ef332960048206d48daa8e9ec6e13c20
SHA1 hash: 0d8e2125ef2aa02cb4dd87feadc85bb6b201af8d
MD5 hash: 7b4d174a575529a97b30c52e8db704b9
humanhash: lion-cola-eighteen-freddie
File name:7b4d174a575529a97b30c52e8db704b9
Download: download sample
Signature Formbook
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File size:981'504 bytes
First seen:2022-03-19 18:10:24 UTC
Last seen:2022-03-19 20:54:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:7waSWMGaAnSnsYVxW2gZxN/ojQ3oIdDb:MYMGXnI3e2gZUjIhd3
TLSH T1E225AE8033CCBE28D2B6373F777891D16134BA32F6A596593090515F60AF3A3EE452B6
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/252996/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48663752.1082.31783.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Сreating synchronization primitives
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/62361cc30cd58dbd92c057e9/reports/3d055ffd-7418-4fa5-8b91-9e0c842868ad/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/fc4f2cec-6d2e-41b6-9505-9c53c462266a
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/960128
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 592609 Sample: DyDsW6B7e8 Startdate: 19/03/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 12 other signatures 2->42 10 DyDsW6B7e8.exe 1 2->10         started        process3 file4 28 C:\Users\user\AppData\...\DyDsW6B7e8.exe.log, ASCII 10->28 dropped 54 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 10->54 14 sdbinst.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.automabostta.quest 37.123.118.150, 49798, 80 UK2NET-ASGB United Kingdom 17->30 32 www.xn--3k5bw6n08c.com 49.247.19.229, 49797, 80 SMILESERV-AS-KRSMILESERVKR Korea Republic of 17->32 34 9 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Performs DNS queries to domains with low reputation 17->46 21 svchost.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2022-03-19 11:02:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
14 of 27 (51.85%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rrhqbrx4w63ieh6e37gybmal3kivywqlx2go277nn6xz2g4ihzja._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:u6rs evasion loader rat suricata
Link:
https://tria.ge/reports/220319-wsla6afeam/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/20de1f9e-d73f-4d4b-bcd4-43a6f46675a9/
SH256 hash:
a3382235a9c93b7f854d235cac624e0b1a4bbb673ea7d3b0b5871fc0dbe77ddf
MD5 hash:
179f6725dc6c398d1c3679d4c2d2a8b5
SHA1 hash:
8eb540e9c38af24571150a672dfba60f0adde907
Link:
https://www.unpac.me/results/20de1f9e-d73f-4d4b-bcd4-43a6f46675a9/
SH256 hash:
39901dc0104ed49aff82b1384abaaf5ca221b03b54121923cd3eaf9f98207e4b
MD5 hash:
2929aa6a6940318c7bb4380bc9b14efc
SHA1 hash:
c87719df3e1e5bad549b3e5311e9d487d4a0fa6c
Link:
https://www.unpac.me/results/20de1f9e-d73f-4d4b-bcd4-43a6f46675a9/
SH256 hash:
845b083692e05be7578b710ba6c736e36ced0f288ab5b01473e809da1cc5776e
MD5 hash:
c4bb8d560a311bb8c52e78878daa37fb
SHA1 hash:
a6f626900ae9e0bca57d734c56ad0a50b58b17c2
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/20de1f9e-d73f-4d4b-bcd4-43a6f46675a9/
SH256 hash:
8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52
MD5 hash:
7b4d174a575529a97b30c52e8db704b9
SHA1 hash:
0d8e2125ef2aa02cb4dd87feadc85bb6b201af8d
Link:
https://www.unpac.me/results/20de1f9e-d73f-4d4b-bcd4-43a6f46675a9/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8c4f00c6fcb7/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/8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52

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.

Web download

Formbook

Executable exe 8c4f00c6fcb7b6821fc4dfcd80b00bda915c5a0bbe8ced7fed6faf9d1b883e52

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2106031/
Cape
Cape
https://www.capesandbox.com/analysis/252996/

Comments


Avatar
zbet commented on 2022-03-19 18:10:25 UTC

url : hxxp://103.156.91.63/2cloud_diskk__/vbc.exe