MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1
SHA3-384 hash: 22001503c6006054757d4f99241fbe78a60e39ef2599ee85964618f0a918d1ae9ad9346e8f0566f731501e16f37113e0
SHA1 hash: 16ff2699b1cfd6e82e1151bb3048d301efac3fc2
MD5 hash: a1a6cb794f6596cb42b160ca1cde1ab1
humanhash: double-table-idaho-emma
File name:UCfsm9Qvsmv5X2m.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:734'720 bytes
First seen:2021-09-06 13:48:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:EIxhq2bM80UnKQeHItWG5AzZMKbxBgeCYjbGUlp7V5XywTizFX5T+X7Cd:EID+80UnKBoh5AlM8BgezbG
TLSH T145F45A9C3110759EC957D9368E64DC74AB202CAA530BD213A0E32DDFBA6DA97DF101F2
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
UCfsm9Qvsmv5X2m.exe
Verdict:
Malicious activity
Analysis date:
2021-09-06 13:49:08 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/413c893f-e585-4a5e-8d8c-c59a21c76c37

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/185683/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/08e6fa67-4366-4d45-b13b-adf59dc931b8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/846032
Signature
.NET source code contains potential unpacker
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 478463 Sample: UCfsm9Qvsmv5X2m.exe Startdate: 06/09/2021 Architecture: WINDOWS Score: 100 29 www.boalifetime.com 2->29 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 7 other signatures 2->53 10 UCfsm9Qvsmv5X2m.exe 3 2->10         started        signatures3 process4 file5 27 C:\Users\user\...\UCfsm9Qvsmv5X2m.exe.log, ASCII 10->27 dropped 55 Tries to detect virtualization through RDTSC time measurements 10->55 57 Injects a PE file into a foreign processes 10->57 14 UCfsm9Qvsmv5X2m.exe 10->14         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 14->59 61 Maps a DLL or memory area into another process 14->61 63 Sample uses process hollowing technique 14->63 65 Queues an APC in another process (thread injection) 14->65 17 chkdsk.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 37 Self deletion via cmd delete 17->37 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Tries to detect virtualization through RDTSC time measurements 17->43 23 cmd.exe 1 17->23         started        31 www.amazingschoolresources.com 109.68.33.25, 49710, 80 GD-EMEA-DC-LD5GB United Kingdom 20->31 33 www.phylthomas.com 69.163.225.86, 49708, 80 DREAMHOST-ASUS United States 20->33 35 6 other IPs or domains 20->35 45 System process connects to network (likely due to code injection or exploit) 20->45 signatures11 process12 process13 25 conhost.exe 23->25         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1/
Threat name:
Win32.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-09-06 13:49:05 UTC
AV detection:
8 of 32 (25.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wn2yip737lylsoajlhyfp2stv3obsb4ggjhsg6zjouakp5seu3iq._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ipa6 loader rat suricata
Link:
https://tria.ge/reports/210906-q4nyjaedap/
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
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.magayake.com/ipa6/
Unpacked files
SH256 hash:
bb2fddef69e53d0701b736736730a0eca8a5130617a6d01dcf08cf682335d271
MD5 hash:
01d3211d1c63b319266cf9a86b4c1c13
SHA1 hash:
9da1ac01cb148de72486b2ab3024649f546dc0d9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/cb15d1d9-9edc-4296-ba2d-918d150666b1/
Parent samples :
b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1
13c26434028c07333f16b4ca9740f7d1c2234d81f3ed8f8f23d1c5019141479e
SH256 hash:
3d2fe1925efbfcee25250208db7e817b0d6d8f3e664bf0f076823dd7ebadc9f5
MD5 hash:
41d2ebf75982c34a41a18698afa9799f
SHA1 hash:
8832032bbb7b2fdfe6337ba78772093b3c88cc8a
Link:
https://www.unpac.me/results/cb15d1d9-9edc-4296-ba2d-918d150666b1/
SH256 hash:
81f9eac76804c02f5baaa34c91b5775f965a34ad7811218d9c24e50cb6d9a90c
MD5 hash:
bae511742374b721136acaa03b0c1fa0
SHA1 hash:
215c50455b01a78ea173bbb034ddbe4b452ea734
Link:
https://www.unpac.me/results/cb15d1d9-9edc-4296-ba2d-918d150666b1/
SH256 hash:
b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1
MD5 hash:
a1a6cb794f6596cb42b160ca1cde1ab1
SHA1 hash:
16ff2699b1cfd6e82e1151bb3048d301efac3fc2
Link:
https://www.unpac.me/results/cb15d1d9-9edc-4296-ba2d-918d150666b1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/b375843ffbfaf0b9380959f057ea53aedc190786324f237b297500a7f644a6d1

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/185683/

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