MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
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SHA256 hash: 90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68
SHA3-384 hash: 25b107a766e045d9e445523a90b22ceccbda145fcded32d9a50341249d4a98683025f409e7ab1e28e87ad508cebf8313
SHA1 hash: 10348a89cc88e0911f507a2d4aa50071718b096c
MD5 hash: 027d8e07155bc564f7b522183018efe6
humanhash: triple-finch-sink-speaker
File name:Documents pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:545'792 bytes
First seen:2021-07-23 12:50:21 UTC
Last seen:2021-07-23 13:53:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:AApHmgoG6Zc/60tIIRFTqOK7QOZtsPdkhU+vlOd9qPOHgzYlFR:FHm8/VtIIRtqOKFzsPS+gz
Threatray 1'541 similar samples on MalwareBazaar
TLSH T1CFC4F1447290E68FC15FCE76E9940C21A7A0B47B6747E3836C8726ED944F39A8F066D3
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Documents pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-07-23 12:59:02 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/832ed7aa-1c7f-4851-87d7-eb5d66e060da

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/173641/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.949.19648.21869.UNOFFICIAL
Create hunting rule

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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/55f0080d-755a-4a8c-8c2a-87beeacaef82
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/820773
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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 dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Process Start Without DLL
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 453184 Sample: Documents pdf.exe Startdate: 23/07/2021 Architecture: WINDOWS Score: 100 39 www.ocheap3dbuy.com 2->39 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for dropped file 2->47 49 17 other signatures 2->49 11 Documents pdf.exe 6 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\Roaming\PwTRIU.exe, PE32 11->33 dropped 35 C:\Users\user\AppData\Local\...\tmpB347.tmp, XML 11->35 dropped 37 C:\Users\user\...\Documents pdf.exe.log, ASCII 11->37 dropped 59 Injects a PE file into a foreign processes 11->59 15 Documents pdf.exe 11->15         started        18 schtasks.exe 1 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 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 41 www.wallinders.com 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 26 rundll32.exe 20->26         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 26->53 55 Maps a DLL or memory area into another process 26->55 57 Tries to detect virtualization through RDTSC time measurements 26->57 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-23 01:39:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
17 of 27 (62.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sdt4s7vesf5g5624bju3232idmnfai6w7cwq6iwrepcbp3p7rjua._file
Verdict:
unknown
Similar samples:
299c548532e82b62f4b52ad642613b9cecc89c9be39a1da630afbc06cb7cce85
Formbook
2cc476342cd37570d78bd78d54801ae2387f21d4624b27dafac4f04e580f0dbe
Formbook
367fd8584be5901c9b262975ab5e5700e0e3010d697f1161b6aafabcc7f07d07
Formbook
40cd463ec941b66e1f65ea9e1e9ca7ab0c0211ebc38ea7250eaa3a9012c61cf9
Formbook
470d8938f9eedf84f9f75a9862f09d98bd0c9d265ede33a2f0983a5c26d17a7f
Formbook
75f51a01e4c2c9662dfbb21c0094b8cbef4823f6919c816c04efef2e25678d76
Formbook
a22a93aa201096c6ae9d68aa245093f3b922b90e31a529ce94bcdbd2c0507e86
Formbook
c9c574f1105965e070a09d77cccf598b99305d3e007305667170c6729c2b0829
Formbook
ee0479db2b4051353c55120941191f243e4ed47d037d3fe44f179529b6882a7b
Formbook
+ 1'531 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210723-gxh3dp1fzs/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.valiantfinancial.net/hth0/
Unpacked files
SH256 hash:
c5a468677b7bc387a0f67d6f8badb1e4c26812a63a206ba2c004568a7fd953d5
MD5 hash:
3a6261137425bb8d7ffa6ca1a6ecfe4c
SHA1 hash:
e4331c5e2c61c3e5461b6c1e7106ffd200c83f4c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/83b79cdc-c316-4227-9411-3a0e08cd6242/
Parent samples :
d476f0d6936a06df598e0d45e9b80a4bc1e97880fd72351ecbde5fcb0dd2a96f
4c0c8cbb0e933f865862852967071eb6908bca3c610d2b14a77149d756db00fe
abb3fcb252b5c9e7aa022a3f16409b3f4b6dee5db0fe553b0cdda5ecc30eefad
48c48701e841f502a2b6740f73e15c20a1bc0d4b840c9f889f93638ac388d162
419d8b92dc042882bb3261de70dfe4a158bc9ca436c71f9bf330bb8a6917d04c
90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68
SH256 hash:
c362729899c5956cfa9fc3bcf9b21ac72066a1b84a497ceb1281f76e2f55c54b
MD5 hash:
0327d1374a5ce015ad9c83c5de76e823
SHA1 hash:
e521349d9e96a4191248747c42c78b6f88fc8f63
Link:
https://www.unpac.me/results/83b79cdc-c316-4227-9411-3a0e08cd6242/
SH256 hash:
94cf60bf9a2239ccb3dfc9336270c92a049214116dbebe8716c68b09f2c156e4
MD5 hash:
a214c9c196d11e6cda28dfda2b8193a7
SHA1 hash:
d870e503bdea3416410fb0db17d1f3d5d21a9a5d
Link:
https://www.unpac.me/results/83b79cdc-c316-4227-9411-3a0e08cd6242/
SH256 hash:
90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68
MD5 hash:
027d8e07155bc564f7b522183018efe6
SHA1 hash:
10348a89cc88e0911f507a2d4aa50071718b096c
Link:
https://www.unpac.me/results/83b79cdc-c316-4227-9411-3a0e08cd6242/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68

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
Create hunting rule
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/173641/

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