MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a
SHA3-384 hash: 7644fab11582e97e458d48544526f519f106e87e2bfd862c5c690407db2a3018c62857bc19ac750bcf48c972b39a5b45
SHA1 hash: 2717de64ae24cdec43ab3bdc6e31adcb4b558c24
MD5 hash: 566d252251957613171fed838fc80268
humanhash: video-salami-crazy-fillet
File name:No. STB42020.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:891'392 bytes
First seen:2022-03-01 11:56:28 UTC
Last seen:2022-03-08 15:24:39 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:CsIDujOWRv2xfdZPdf2Fcu0a8zRqD0bKdfgzA:CyinVZl2FY5z/bKa
Threatray 14'437 similar samples on MalwareBazaar
TLSH T10515AF4835D6607DE8368BB2CAC0EFF0DB29F232D54960B654020E59960DBBD8E45EFD
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/245745/
Detection(s):
Porcupine.MSIL.GenKryptik.FRKG.103800.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/621e0a1bb94fb38cb42e0e1c/reports/a7512a3a-1a07-4e07-9096-106ad13e71a3/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/300dd80c-7a0a-45c5-9d96-3835065ba35b
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/948182
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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: 580660 Sample: No. STB42020.exe Startdate: 01/03/2022 Architecture: WINDOWS Score: 100 31 www-bing-com.dual-a-0001.a-msedge.net 2->31 33 store-images.s-microsoft.com 2->33 35 dual-a-0001.dc-msedge.net 2->35 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 8 other signatures 2->51 11 No. STB42020.exe 3 2->11         started        15 explorer.exe 10 2->15         started        signatures3 process4 file5 29 C:\Users\user\...29o. STB42020.exe.log, ASCII 11->29 dropped 61 Injects a PE file into a foreign processes 11->61 17 No. STB42020.exe 11->17         started        signatures6 process7 signatures8 37 Modifies the context of a thread in another process (thread injection) 17->37 39 Maps a DLL or memory area into another process 17->39 41 Sample uses process hollowing technique 17->41 43 Queues an APC in another process (thread injection) 17->43 20 explorer.exe 17->20 injected process9 process10 22 explorer.exe 20->22         started        signatures11 53 Self deletion via cmd delete 22->53 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process12 process13 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-03-01 11:57:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kzc5ty4mtghv3nb25e7dkm45pxfavfvyd6agwnygettucdro5ifa._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
00d8e033e68ffe5f290339a1e00193b0376814bc8a27c8978b9b5e0de6b2823f
Formbook
070264132f92fc5cb01521385e73bf36954d4093da205c59821e844abed68b5f
Formbook
0adfc99fefcb09f082e85f53025764a8ea4b0f35a4140540022be9de71bb58e9
Formbook
28c28db28e96276f72ce38a60d04f0711388d3f93ecb34d4721dc94fc2bf9f07
Formbook
4e1397fff753fe86be50e152d3e2ace6a8a9e0b3f8e63e77c0e0c1c1d6ed71c3
Formbook
60b97b4d45e3850d57a661bf37987909c1f99096384123594cc1b79d5449348f
Formbook
9e41bc1734c4bc894acdc9c08568cb2f1cd01078fa9b5f30d6f18c6383c22863
Formbook
9f033092c39f84850b90bbeb99c2fa53bb621a8467cdf399f77e08bfa892548d
Formbook
a4e51503957292fe946f001fdcaf2b6ac7cd935c7bca80d5f79754c14d93e03d
Formbook
f725b6a2466a6f4c7084eeab5994e30b8ef836633c1a84d85c1899deb1808d3c
Formbook
+ 14'427 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:m46a loader rat
Link:
https://tria.ge/reports/220301-n4k6jaaaa5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Unpacked files
SH256 hash:
f7b953613cb87b7220f9b73583982a07afa136effe6e1d56ae3a4c0230968bd1
MD5 hash:
6fb87f025ce2d1fc228bf046605d0854
SHA1 hash:
711a8868cf1f6ef62c82578a7e759130cf40f80a
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/ee35b59c-6cdb-427b-a359-7f18ba401d10/
Parent samples :
5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a
e5f3bd60bce911ddbe8272a218b0690fff6b36f5876a51f26914b4b066d17ca6
e745791e3faad64dc3c475e87b458ac60853d5ca429a32b812c6bacbc841ef99
6a68426f18f239950d5bb0d82223890b44ea10de5a5fa83294457dd3dcdc5068
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/ee35b59c-6cdb-427b-a359-7f18ba401d10/
SH256 hash:
1ddc1b2dbfd545f7659902ec3ab3dc0f794fb996ea53e1e9e42f855e5f86d077
MD5 hash:
07c691e0fcacb8ce8744e70f7ff6fa07
SHA1 hash:
4ef98014cf3ff66d5094d93f14ed6d0f4dbac46a
Link:
https://www.unpac.me/results/ee35b59c-6cdb-427b-a359-7f18ba401d10/
SH256 hash:
6319f7607a0929458b4923460185203aa245fcf1264c1b3e402f9ae684f3e51c
MD5 hash:
23c27a744e06108ef6e73fcdc1099177
SHA1 hash:
4080cb03a5c14be4f478ca6bd6626a974ce4e032
Link:
https://www.unpac.me/results/ee35b59c-6cdb-427b-a359-7f18ba401d10/
SH256 hash:
5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a
MD5 hash:
566d252251957613171fed838fc80268
SHA1 hash:
2717de64ae24cdec43ab3bdc6e31adcb4b558c24
Link:
https://www.unpac.me/results/ee35b59c-6cdb-427b-a359-7f18ba401d10/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/5645d9e38c99/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/5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a

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.

Malspam

Formbook

Executable exe 5645d9e38c998f5db43ae93e35339d7dca0a96b81f806b370624e7410e2eea0a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/245745/

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