MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments 1
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SHA256 hash: 99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012
SHA3-384 hash: 4585a635500fcf3e7f67d1770335a0f5f73228adda9064ed6b3bdcc84db93f10405b52531ab3ef416d3ff59d70797f21
SHA1 hash: c90dcc5dfd5556569a3a48cbd90b7c94c48b1fe8
MD5 hash: 294049580c35bc3f9aa2ebb6074a987d
humanhash: diet-india-social-papa
File name:294049580c35bc3f9aa2ebb6074a987d
Download: download sample
Signature Formbook
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File size:16'384 bytes
First seen:2022-03-04 07:55:36 UTC
Last seen:2022-03-04 09:58:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 192:U+x4tbLrmMFO4sCOeuKunxNC3mbH9CqIOsh9kFxTpke7i8kwGLmxKiqfLIw:9enrmMA4sCZmxNCqrRGz8kwGLDfU
Threatray 13'975 similar samples on MalwareBazaar
TLSH T13272C51873D84721DA7D8A701C362A5042B7E20B7C52E76E19DF51F8081BFD94B0DAE7
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
234
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/247269/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.19793.10726.15511.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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/0e2962b1-35ed-43e2-b7c0-0f9e7f274860
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/950619
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 583096 Sample: sLp0DNgM81 Startdate: 04/03/2022 Architecture: WINDOWS Score: 100 42 store-images.s-microsoft.com 2->42 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus detection for URL or domain 2->56 58 Yara detected FormBook 2->58 60 4 other signatures 2->60 10 sLp0DNgM81.exe 16 6 2->10         started        signatures3 process4 dnsIp5 50 olypath.com 2.59.119.2, 49748, 49758, 49759 ONLINENETTR Turkey 10->50 36 C:\Users\user\AppData\Roaming\...\Loader.exe, PE32 10->36 dropped 38 C:\Users\user\...\Loader.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\...\sLp0DNgM81.exe.log, ASCII 10->40 dropped 70 Tries to detect virtualization through RDTSC time measurements 10->70 72 Injects a PE file into a foreign processes 10->72 15 sLp0DNgM81.exe 10->15         started        file6 signatures7 process8 signatures9 74 Modifies the context of a thread in another process (thread injection) 15->74 76 Maps a DLL or memory area into another process 15->76 78 Sample uses process hollowing technique 15->78 80 Queues an APC in another process (thread injection) 15->80 18 explorer.exe 15->18 injected process10 signatures11 52 Uses ipconfig to lookup or modify the Windows network settings 18->52 21 Loader.exe 14 3 18->21         started        25 Loader.exe 2 18->25         started        27 ipconfig.exe 18->27         started        29 ipconfig.exe 18->29         started        process12 dnsIp13 44 192.168.2.1 unknown unknown 21->44 46 olypath.com 21->46 62 Injects a PE file into a foreign processes 21->62 31 Loader.exe 21->31         started        48 olypath.com 25->48 34 Loader.exe 25->34         started        64 Modifies the context of a thread in another process (thread injection) 27->64 66 Maps a DLL or memory area into another process 27->66 68 Tries to detect virtualization through RDTSC time measurements 27->68 signatures14 process15 signatures16 82 Modifies the context of a thread in another process (thread injection) 31->82 84 Maps a DLL or memory area into another process 31->84 86 Sample uses process hollowing technique 31->86
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012/
Threat name:
ByteCode-MSIL.Trojan.SpywareX
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Status:
Malicious
First seen:
2022-03-04 07:56:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 27 (66.67%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Formbook
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705bf99df489a6945a540499bc8c6d7b7564d9a255629e326013d4a85bb77a78
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9de751536a55984df4e0686ff47bbe5553906d4b2e2559d7afc019fcb7d4eb4a
Formbook
c7ceb2adec0ec0d5d01cbbc2753f0c2ddfc149c2e4daa47a519f44604ea5e557
Formbook
e183423e51a5a8a73fd0c6743817e57d18ac7d97585b91c3b8f278deef2fd106
Formbook
ff0766b195b0cb5dbeca83f639ab656279ced9f7707d838abd34c3c4329f7cd3
Formbook
+ 13'965 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:yugj loader persistence rat
Link:
https://tria.ge/reports/220304-jspx5affap/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Downloads MZ/PE file
Xloader Payload
Xloader
Unpacked files
SH256 hash:
99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012
MD5 hash:
294049580c35bc3f9aa2ebb6074a987d
SHA1 hash:
c90dcc5dfd5556569a3a48cbd90b7c94c48b1fe8
Link:
https://www.unpac.me/results/fb941a62-43ec-4967-96c9-0fe5654ea699/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/99b8fa1ccbec/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012

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 99b8fa1ccbec2cffdb7f16890502d986098a57771000a7d8f5ba44b63b9fa012

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2075458/
Cape
Cape
https://www.capesandbox.com/analysis/247269/

Comments


Avatar
zbet commented on 2022-03-04 07:55:36 UTC

url : hxxp://172.245.119.40/532/vbc.exe