MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e. 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
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SHA256 hash: 83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e
SHA3-384 hash: 24625ff99f85add097abbfbfb465816e7ece646f0c4dc64a3de901d1dfeb544a1a3e6f17cf97ab04984999c3886a31a8
SHA1 hash: 56fe399599a5164caf136e0344718eddb656b999
MD5 hash: 7ac4aae284d0983afc47f3b7f23f9754
humanhash: delta-artist-video-bravo
File name:7ac4aae284d0983afc47f3b7f23f9754.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:612'352 bytes
First seen:2023-07-26 15:34:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Sf2iN2GULI6YjDcehl55iDnqCJZeP+JBLTsbHPaBJ1xqGf94/:Sf1xULI6YthlL6nqAZhB3sLaBrguO
Threatray 3'431 similar samples on MalwareBazaar
TLSH T164D41222B2AC571ACB3B03F958955A004BF1FD6E9130F2192EDC64CB4E63F2517A2B53
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 abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
260
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
Payment-724890098761129222009.doc
Verdict:
Malicious activity
Analysis date:
2023-07-26 05:49:38 UTC
Tags:
exploit cve-2017-11882 loader formbook xloader stealer spyware
Link:
https://app.any.run/tasks/c29eda3d-f7d8-4c6c-8b38-0f472797996a

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/434121/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e
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/cdd2d1ec-4736-48e2-b9ac-9d95524f6d37
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1280359
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found 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
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 FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1280359 Sample: YvyF50ezzE.exe Startdate: 26/07/2023 Architecture: WINDOWS Score: 100 31 www.385mobiledetailing.com 2->31 33 ext-sq.squarespace.com 2->33 41 Snort IDS alert for network traffic 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 7 other signatures 2->47 11 YvyF50ezzE.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\YvyF50ezzE.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 YvyF50ezzE.exe 11->15         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 18 explorer.exe 1 1 15->18 injected process9 dnsIp10 35 www.lbjzkj.com 154.23.134.144, 49712, 80 COGENT-174US United States 18->35 37 www.stoidc.com 38.40.172.217, 49711, 80 COGENT-174US United States 18->37 39 2 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 systray.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e/
Threat name:
Win32.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2023-07-26 08:31:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnyf7nchgbcbsspumrk7eb3cchlptu3ttjrcxmtx2pu4apo5lexa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
01ce82aafecd77a6ae68ca7b431b152764db8b4a72277bd8eb2ea1fad6460740
Formbook
06c8aa9110e9c50c51464d31ef28f3cab2efdb1ca756455f99f49daada571dba
Formbook
190ab20809cf0e5dee4860df81f3151e95b23f9840f02ab3e9ad2f7cc02f46d5
Formbook
719b031a6eb4fb932f4ddc541bcd119995ea7273f77c9bbe663273401d157513
Formbook
8eb7939848c171ebb4a2203ad90741bcdc5c7e1feebdd3cd1b7ca4bd4dc307ed
Formbook
9cd1b016ff9416679f96b8047284684816dc8dc5c61d698f2ff69a3d200477ca
Formbook
a993e52917b124010519fcf6adb63124d87c0cc594cea58b1dce686bf85d7cf9
Formbook
b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1
Formbook
c63fce3a675e641aab29aca12d4e54f155f24c4476ee3d13ee9b21fb6a341557
Formbook
ead9b9c37d63a3b18959e6f4926d76364408f76ed882fad8e8b34ec496702bda
Formbook
+ 3'421 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:pot4 rat spyware stealer trojan
Link:
https://tria.ge/reports/230726-s1b6nsec5v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
444a1cf0ac2c91de200ce8d7e7caa81e5444e5127cada8fe4ed4430a8c8f504f
MD5 hash:
b267a39c9655f8779aa7eb62da00681c
SHA1 hash:
eb6cf83a9114606a29aa9dc2b834ff6b48b9ad09
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/996f79f9-6e7d-4ac4-a71e-f7b9307a2f8b/
SH256 hash:
7c743d979549f931d7101d1a14c14841ff47c848a3f30e31882d0d958bf5f941
MD5 hash:
508ba12479b3d78edb93f63b40ab3b7f
SHA1 hash:
d72b842c46546e4e494c9338b530e305dae1d5d2
Link:
https://www.unpac.me/results/996f79f9-6e7d-4ac4-a71e-f7b9307a2f8b/
SH256 hash:
9a42a4b48e21ce8397881df6391a762fcaa2d79d13284a6375c6d9b4b1f2c9bd
MD5 hash:
4d51ca82544ee10025bf334e3eaf6233
SHA1 hash:
764b12bb109759e763d9cc981ac7b1a56397db87
Link:
https://www.unpac.me/results/996f79f9-6e7d-4ac4-a71e-f7b9307a2f8b/
SH256 hash:
b9a20d6a037273d22acfef040a5ee5eaf300f8ed3cfa174ef8a7c400b3753105
MD5 hash:
f2ddeb90f1d02f7f07a7d4784907f037
SHA1 hash:
03ecca6a926462f1559c29e0d59dd99ed62b60fa
Link:
https://www.unpac.me/results/996f79f9-6e7d-4ac4-a71e-f7b9307a2f8b/
SH256 hash:
83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e
MD5 hash:
7ac4aae284d0983afc47f3b7f23f9754
SHA1 hash:
56fe399599a5164caf136e0344718eddb656b999
Link:
https://www.unpac.me/results/996f79f9-6e7d-4ac4-a71e-f7b9307a2f8b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83705fb44730/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/83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e

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 83705fb44730441949f46455f2076211d6f9d3739a622bb277d3e9c03ddd592e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2690166/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/434121/

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