MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: 835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8
SHA3-384 hash: 2b1013edb4531fac9a1693ed670e320d1526d3fd6c5f344f210537fb83d309a92da71e8383af472caacc65dd54c5aa04
SHA1 hash: 8b2aa9aa0a08c2744aab52564e7dbff66a110778
MD5 hash: 136299149f26a2b21814465834e7dc29
humanhash: pluto-lactose-maine-montana
File name:PO.pdf.exe
Download: download sample
Signature Formbook
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File size:509'952 bytes
First seen:2022-04-08 06:39:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:CXFE0ZQrL+OKFsZ183gd7LDysz2X0SQq03g1xBPZeuKDBR:CEP1X8wsxX0SQq032xR0fDB
Threatray 14'727 similar samples on MalwareBazaar
TLSH T1DAB4120D11E44278CEE0633A4442E65A93F2D8887066FBD9DFAC78FB2E17BC585056E7
File icon (PE):PE icon
dhash icon b2cccccce8b2b28a (21 x AgentTesla, 14 x Formbook, 11 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
183
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PO.pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-04-09 00:37:51 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/fde93c3f-7f8b-44ce-a23a-db8b7447577b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/261883/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Stealer.23680.UNOFFICIAL
Create hunting rule

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
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/624fd8ccbbd90911a2958d1e/reports/1315be13-4c55-46d3-bf8c-b74e076c048b/overview
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/5a58d42b-457a-421e-9190-322a8173df05
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/972906
Signature
.NET source code contains potential unpacker
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 domain / URL
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
Sigma detected: Suspicious Double Extension
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
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 605392 Sample: PO.pdf.exe Startdate: 08/04/2022 Architecture: WINDOWS Score: 100 32 Multi AV Scanner detection for domain / URL 2->32 34 Found malware configuration 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 11 other signatures 2->38 10 PO.pdf.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\PO.pdf.exe.log, ASCII 10->28 dropped 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 PO.pdf.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.thecarspallc.com 199.34.228.43, 49792, 80 WEEBLYUS United States 17->30 40 System process connects to network (likely due to code injection or exploit) 17->40 21 cmmon32.exe 17->21         started        signatures10 process11 signatures12 42 Self deletion via cmd delete 21->42 44 Modifies the context of a thread in another process (thread injection) 21->44 46 Maps a DLL or memory area into another process 21->46 48 Tries to detect virtualization through RDTSC time measurements 21->48 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-07 12:43:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnnizjry2xmhoxqkhdquq3je7cdta24urfhnxvibzro6sut5dtma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ba2f6257fb96db81026615bb726f0ede3ea3263f2f79989cbab3f7e3cff97a1
Formbook
2f769789848c3e7e7492ad889d72f0087633418aa8368fcbfa63bf2dc31bfd1a
Formbook
4a7aa26a59cccaa38181f61e413214368bd2cb3b8aa9c93c8694cc7d37591a3f
Formbook
4bc96a8bb1739c227e539a7aa4156cb6c1023a254e2660135351edbe9a7db8e2
Formbook
8d08a6736ce2ad51b87e1f3e9577a53abd8ca055fb1d7027b97250cecabee199
Formbook
909570efc48341a6ae00ae8dcbb8d751f912569a4756f7526bc7d0cf1cda81ed
Formbook
9621e6459dc138fb11bc279b6583fc68eed0db7b284e198c74dda8385db8ce0d
Formbook
d675408e7dcc87922c9d654a5c4f387f70d4a06ad99bad187753d90ee6381a87
Formbook
d727b63c6bcf81ea3c6a345f8435ad103f37c11c1b2cc89f9fee1f7253a26f9f
Formbook
f301682053d5e2fd2982d90d37508983ac1bf5e630e66e553573709ce7e37817
Formbook
+ 14'717 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sf31 rat spyware stealer trojan
Link:
https://tria.ge/reports/220408-he7qcahdd2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
70a06bcb58368e722ea5821170ae0d745ee7235aeb8c91e96b7ea2a00eabc210
MD5 hash:
fd6cb10d1c8d6ae2c9818ae87dfc6e1c
SHA1 hash:
85ad8ce278ac51ec904e2370e7a6c4180514fe04
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1b9b6a98-7acb-46e7-b9cc-f777516ff9f1/
Parent samples :
76337d1595a47097a7a729d1588e494a778fb04d48e02d60f449df7a90f30b25
8c6e630e2b923d9961d01d662f8ea7455f29549515ef1fee8b99b0aa1da43858
835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8
7bafdf9104df0d8445c2478014a23e68200d48c2c438b4ad1820f8995936d129
64aa3b6b174535490dfbd46d731118c3bc146d2463f4c2efaa2bfef3ec584070
f1c65a4c95ac59ee5774fd858b8e4cb9cdd3d1374894c33eabeef692f76f889e
SH256 hash:
a75f8a292f7b07e27a5d364fb0be07747495a1d63c6d6309a4ea65da997218cd
MD5 hash:
c11a5013361a99ba980f785cb31f009d
SHA1 hash:
ce56bfe4b923137ddc752dd5be22d17b6fb69ca9
Link:
https://www.unpac.me/results/1b9b6a98-7acb-46e7-b9cc-f777516ff9f1/
SH256 hash:
e11871df824c3130e35f2c94d672404e18ebefddf3172d166f2e640ad3686c73
MD5 hash:
4379771ccd9b927712ef2505214161df
SHA1 hash:
6636b7b80e279de67c60b52277f566463afebf8e
Link:
https://www.unpac.me/results/1b9b6a98-7acb-46e7-b9cc-f777516ff9f1/
SH256 hash:
ac1e975a12d8666a621372370b0fe73cbd7d6ce0d6ab0708f69a9e8032aacfbc
MD5 hash:
fff565250009067d2bad5178b91e45e2
SHA1 hash:
0a450fdfe0757e9b55b7e4cacd40ed4c6c13b5f2
Link:
https://www.unpac.me/results/1b9b6a98-7acb-46e7-b9cc-f777516ff9f1/
SH256 hash:
835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8
MD5 hash:
136299149f26a2b21814465834e7dc29
SHA1 hash:
8b2aa9aa0a08c2744aab52564e7dbff66a110778
Link:
https://www.unpac.me/results/1b9b6a98-7acb-46e7-b9cc-f777516ff9f1/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/835a8ca638d5/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/835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8

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
Create hunting rule
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 835a8ca638d5d8775e0a38e1486d24f887306b94894edbd501cc5de9527d1cd8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/261883/

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