MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832. 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 3 File information Comments
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SHA256 hash: 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832
SHA3-384 hash: c57cf12cdd25ac381bb9c25a1a8a485f92a7e70c605a77cdc5c176dd848ca49c22a5c0ddef3183afb8875f6276049458
SHA1 hash: 2aca317851190a6d6ed9a61e3b20db9a879ec8e1
MD5 hash: b444f067b6e84564db815accdf14d6fe
humanhash: kitten-magazine-september-tango
File name:Purchase Samples-404995.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:608'256 bytes
First seen:2023-09-11 10:17:00 UTC
Last seen:2023-09-11 10:36:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'605 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:r5fVsbR2XSii82GG+qhz95kmbTdSrAC+fzLgb+LE:rtO2iiiP+qhz9OATd8ACwLgb+L
Threatray 123 similar samples on MalwareBazaar
TLSH T18BD4DFF9656AC3E2D3B193FF509B84719D23BC41607183ED37BD36884DA9A871922D32
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
2
# of downloads :
286
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Purchase Samples-404995.exe
Verdict:
Malicious activity
Analysis date:
2023-09-11 10:19:55 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/d9dcdc9a-1ffb-46e1-b772-4e3908755918

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/447903/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Restart of the analyzed sample
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832
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/b43c2ba7-2131-4074-a151-d9e606d03b21
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1307212
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
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 signatures2 2 Behavior Graph ID: 1307212 Sample: Purchase_Samples-404995.exe Startdate: 11/09/2023 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 10 other signatures 2->41 10 Purchase_Samples-404995.exe 3 2->10         started        process3 signatures4 49 Tries to detect virtualization through RDTSC time measurements 10->49 51 Injects a PE file into a foreign processes 10->51 13 Purchase_Samples-404995.exe 10->13         started        process5 signatures6 53 Modifies the context of a thread in another process (thread injection) 13->53 55 Maps a DLL or memory area into another process 13->55 57 Sample uses process hollowing technique 13->57 59 Queues an APC in another process (thread injection) 13->59 16 explorer.exe 2 1 13->16 injected process7 dnsIp8 27 em4466.com 103.248.91.86, 49715, 80 TISP-ASTISPLIMITEDHK Hong Kong 16->27 29 monoescena.com 62.72.37.87, 49718, 80 PRTL-DE Germany 16->29 31 13 other IPs or domains 16->31 33 System process connects to network (likely due to code injection or exploit) 16->33 20 cmd.exe 16->20         started        signatures9 process10 signatures11 43 Modifies the context of a thread in another process (thread injection) 20->43 45 Maps a DLL or memory area into another process 20->45 47 Tries to detect virtualization through RDTSC time measurements 20->47 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2023-09-07 09:13:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jhdek5656phc4h2dy6bsonxdsw36ebitfxityqxfrptko2nfbaza._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
7bf47a92fadd875caa70db94a8ef153f7e63296357619e23a27b2d4e0a6a2bde
Formbook
8c0d07e1007f0ca5c49e068f7bcf93dbad6b1ed222e1b168183f3705bafc5673
Formbook
a5a279ff939e0031e4c3d74d5605cfe84368628d404829bee3943e2e25ff2809
Formbook
aae4507b359991ebb7102b2531f939178db88102ac66b5307e5ea065d94639ea
Formbook
bf03cd8e5554ec62c98931069f436ec71ac21d57a8922b1bb3c1958a0a9256f3
Formbook
e205d9c4dd9d23e24942ad2d1439821f4fef2b7743e60a9731af35198a95eb5b
Formbook
ee0603d9ad98809ae728d4d1ebee72fcb97b28d493df380a6805f7d45a086b64
Formbook
+ 113 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hh36 rat spyware stealer trojan
Link:
https://tria.ge/reports/230911-mbc4safe29/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
3c04cf676cc473a67c861954c64a2fdcd4e75c4f441f6076b760df805058dd46
MD5 hash:
3f900c586b9b3f44e7dc63053d92d381
SHA1 hash:
9cfc5552c788a25eb4de360438ad398cfe0a8bc5
Detections:
FormBook
Create hunting rule
win_formbook_w0
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win_formbook_auto
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win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/b1f7aa56-3e13-4fb6-8e81-354296643595/
SH256 hash:
8c5ed4a15268ea2338d95d23f3f30a684d20272334b57c0ce535529f4b2e4cbd
MD5 hash:
ef4ee9d13a665415143d527576b4a68a
SHA1 hash:
54b467ab0f1d2023058b30e455ffb5590776e9a2
Link:
https://www.unpac.me/results/b1f7aa56-3e13-4fb6-8e81-354296643595/
SH256 hash:
a93ab27d9bd9aa5b52288ff259e1dd2e8de2c873ee8fd5bbae64bca6f7624ce0
MD5 hash:
f2a2d829d920d375609a49544173df5a
SHA1 hash:
2af0e17de7935177d0a503ec980836fae9e17920
Link:
https://www.unpac.me/results/b1f7aa56-3e13-4fb6-8e81-354296643595/
SH256 hash:
43d64bdb904fdeb25f25928bb68dbd93a6304b50147b435c2e6446f1176b9b44
MD5 hash:
68fb0c7a8cda3cfc2fb6ef8eccb83f04
SHA1 hash:
22c0951f010c60a4a70e0d949818b7b88593e36f
Link:
https://www.unpac.me/results/b1f7aa56-3e13-4fb6-8e81-354296643595/
SH256 hash:
49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832
MD5 hash:
b444f067b6e84564db815accdf14d6fe
SHA1 hash:
2aca317851190a6d6ed9a61e3b20db9a879ec8e1
Link:
https://www.unpac.me/results/b1f7aa56-3e13-4fb6-8e81-354296643595/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/49c64577ddf3/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/49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832

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

zip b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8

Formbook

Executable exe 49c64577ddf3ce2e1f43c7832736e395b7e205132dd13c42e58be6a769a50832

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 b403b77348036ba1247fc5600d17502be114f45ba68fc58dbd848a144170dfa8
Cape
Cape
https://www.capesandbox.com/analysis/447903/
  
Dropped by
MD5 bec4e29bad2bb7c98ca3be77a4abf840

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