MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc55f91adb3a18d30810a52d279f5938fa268fa78438245ae363c361e6b00da0. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fc55f91adb3a18d30810a52d279f5938fa268fa78438245ae363c361e6b00da0
SHA3-384 hash: 1f4dfc4658dfcc90dc5ba21492df47ba85bbe6e697cc0f0052afc3c58d8bf6c0c9506d333fa86a3115cb01c23621bb1a
SHA1 hash: 14fa43dd6e74b0b2382e74f93aa88478242e4e16
MD5 hash: e6c65380d38fec56b73d135d8e1be36d
humanhash: hydrogen-floor-early-tango
File name:yy.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'037'824 bytes
First seen:2021-04-16 12:31:12 UTC
Last seen:2021-04-16 13:56:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:xiWakV7FdUnWiZ9aiAfNRuTMvRRRRRjXtAmABZSs:xiWakVnJiZ9aioNRuAvRRRRRjdAmAH
Threatray 4'694 similar samples on MalwareBazaar
TLSH 9F2512C43390972BC5EF2FB8657C63729370C6C9F767E9172DAE22ED4E225465A00632
Reporter ankit_anubhav
Tags:FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
93
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quote - TL210415-1-3.exe
Verdict:
Malicious activity
Analysis date:
2021-04-16 05:42:48 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/55fe6043-dfa5-457b-873f-326b2ba2dba8

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/136102/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.660.6531.3015.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/680688
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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 (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: 389299 Sample: yy.exe Startdate: 16/04/2021 Architecture: WINDOWS Score: 100 31 www.elabrarrr.com 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 6 other signatures 2->45 11 yy.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\yy.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 15 yy.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.touchofclasspropertiesllc.com 18->33 35 www.bdalg.com 18->35 37 3 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 mstsc.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fc55f91adb3a18d30810a52d279f5938fa268fa78438245ae363c361e6b00da0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-04-16 05:50:23 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
09f19a43e9a0b736e9fcd33359267340b91a2ccc376c8cda72fac9754c1493c0
Formbook
1a859f18a203b53f7c893f9e3d3cbfeb6bd9c0d479f1ddd5626ba4c9eb34e670
Formbook
56368dfb68347ec22ba4d8d1d16e1acc9dbf37acf30803ef92f75f27f0a6a6a5
Formbook
5fb8b22a773eb50d70b1f58a72dd7903aa7162b40b64326c0a9985027943e083
Formbook
6cd6c9e9634dd601a9826bf8a8f1ef736e9215e19643eea904d7b7c939a8fa48
Formbook
8cbda95915fcb9696e4e221cdb72f9dc9175af27e348f05bede3f988aee9070c
Formbook
957c5b5a6f0af47354f9ed2d09522fc671b8c0af06e3f3a5b6354e111b2c8129
Formbook
b69927fbfd7eb038b59aa9b7e9f49cb02d127d48fcf6517e65a379e982e806bc
Formbook
bc0cc9f45e5a3b9f2f1815c4787849ebd8ab71d72aca809b687bc462ec9b5899
Formbook
f130539b2d2324246449abb99f5a0effb214feee629b092d48ac63aca14e2ba6
Formbook
+ 4'684 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210416-2xde7h5yke/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.profit-maximisation.com/g7b/
Unpacked files
SH256 hash:
e33b0d0b4b86f0dbb3d1278e68e88a650e5f3350694efb70be313761197b1969
MD5 hash:
471161f6f24e5d26b2db3e0ee18e80b5
SHA1 hash:
ed98f1178a5fe4b86fe0f7e4cd5ebbfba7483a30
Link:
https://www.unpac.me/results/d96a765d-fcd6-4577-90e2-fafbf3b4e46d/
SH256 hash:
fc55f91adb3a18d30810a52d279f5938fa268fa78438245ae363c361e6b00da0
MD5 hash:
e6c65380d38fec56b73d135d8e1be36d
SHA1 hash:
14fa43dd6e74b0b2382e74f93aa88478242e4e16
Link:
https://www.unpac.me/results/d96a765d-fcd6-4577-90e2-fafbf3b4e46d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/fc55f91adb3a18d30810a52d279f5938fa268fa78438245ae363c361e6b00da0

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/136102/

Comments