MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833. 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 2 File information Comments 1
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SHA256 hash: 91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833
SHA3-384 hash: 0e36819f33859e0c7e448236b54f7b0f34858ab3f7210f7fb9d3e886f76dba1c86e6cc6d489134b7b33992a2b05f6c00
SHA1 hash: 4ef674f52ba7fb3d8f6ba2ddd2466b5da24b9b20
MD5 hash: d9f11abb5fbd7478a8fe993cfe8aac52
humanhash: december-eleven-oscar-friend
File name:d9f11abb5fbd7478a8fe993cfe8aac52
Download: download sample
Signature Formbook
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File size:780'800 bytes
First seen:2023-03-30 17:45:07 UTC
Last seen:2023-03-30 20:28:02 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 12288:NQxxBLyywVex3ozH9eqFYLIIm3JkKNzXsle5Cocz6:NknwVegHsqFIliBzXs8
TLSH T136F49D7C1BEC8656E039D7758BF04C20E7EDB4177636CE1E79EA00860A67A42758336E
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon e8b2aa696cd4e892 (5 x AgentTesla, 2 x Formbook, 1 x SnakeKeylogger)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
3710157828.xls
Verdict:
Malicious activity
Analysis date:
2023-03-30 17:26:15 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/30cfa61e-90c9-468f-8295-7ea93ee3d0fe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/378900/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.28057.31803.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
floxif packed threat virus
Link:
https://www.filescan.io/uploads/6425cadc83048b7317acf867/reports/8d53b12d-84c6-4def-9369-b3db71870cd8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833
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/3fa2ae19-56fb-4ef8-ac5c-ec13ffcd1f83
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1205473
Signature
C2 URLs / IPs found in 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
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 838392 Sample: bHRhxuCQRi.exe Startdate: 30/03/2023 Architecture: WINDOWS Score: 100 35 www.hilykan.com 2->35 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Yara detected AntiVM3 2->47 49 5 other signatures 2->49 11 bHRhxuCQRi.exe 3 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\bHRhxuCQRi.exe.log, ASCII 11->33 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 bHRhxuCQRi.exe 11->15         started        18 bHRhxuCQRi.exe 11->18         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 20 explorer.exe 1 15->20 injected process9 dnsIp10 37 mantlepies.co.uk 194.11.155.157, 49697, 80 DATACENTERRO unknown 20->37 39 www.mantlepies.co.uk 20->39 41 www.dairecheese.com 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 24 msiexec.exe 20->24         started        27 autoconv.exe 20->27         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 24->53 55 Maps a DLL or memory area into another process 24->55 29 cmd.exe 1 24->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-03-30 17:46:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shkqf6iyuizaom2zjaoqpxd3uljbw5tvxtod4pgqiqhrzskvpazq._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:ne28 rat spyware stealer trojan
Link:
https://tria.ge/reports/230330-wcajqafa81/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
a603fd8d54fe5815dd449ea77642dc3530cfb62ab304a3c4c79e4244daba4aef
MD5 hash:
eb8fa7cf26fbd6f5bc78f5d08190a549
SHA1 hash:
c1de91ab74a15b7cc1baf8fbf87421e373e66042
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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Link:
https://www.unpac.me/results/21e01ac4-1854-4c78-b078-df36174c703b/
Parent samples :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 hash:
c3fba577c7ed62f569441134a0f2b2fafc85a7260b22a51ddf9c0d5558faa392
MD5 hash:
79201a20d9ac7adfaea680a9562f7c9e
SHA1 hash:
720f4b667dbd85559395886bf332078a9437df18
Link:
https://www.unpac.me/results/21e01ac4-1854-4c78-b078-df36174c703b/
SH256 hash:
ea8d4c91ec5bba5e1db6c17730d7ba5cdbb5ff3c1a777f70c90e91ce599d9b5d
MD5 hash:
27f5124bf8f451bca8d8a15c73c4f521
SHA1 hash:
5fd557e109b8fd1c3b362b64f0ba9f1600c07211
Link:
https://www.unpac.me/results/21e01ac4-1854-4c78-b078-df36174c703b/
SH256 hash:
91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833
MD5 hash:
d9f11abb5fbd7478a8fe993cfe8aac52
SHA1 hash:
4ef674f52ba7fb3d8f6ba2ddd2466b5da24b9b20
Link:
https://www.unpac.me/results/21e01ac4-1854-4c78-b078-df36174c703b/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/91d502f918a2/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/91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833

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 91d502f918a232073359481d07dc7ba2d21b7675bcdc3e3cd0440f1cc9557833

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2591467/
Cape
Cape
https://www.capesandbox.com/analysis/378900/

Comments


Avatar
zbet commented on 2023-03-30 17:45:24 UTC

url : hxxp://192.3.176.131/45/vbc.exe