MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73. 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: 14


Intelligence 14 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73
SHA3-384 hash: cb4c8d706ec97a006640131b6ead3a882864a08cd8c76a9dcd15dbce340e82056916979caece7af7693226330e0d3416
SHA1 hash: 3879b0c48cbd9776fa68ca8ab0c4b128609304c8
MD5 hash: 476025c59bf12eb32d8d03a47bec669f
humanhash: fifteen-sixteen-vermont-robert
File name:invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:322'151 bytes
First seen:2022-02-14 06:13:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:Pwy14jfGAMsdFxsFCbxTL7TE9l+ST0MBQcA9dvrR:MNMs0CtvPxYBQc6
Threatray 13'272 similar samples on MalwareBazaar
TLSH T148640206B8D490FAF8298B3298F75A2D72B53E3C2B71284F4B5CBBE9053125352554BF
File icon (PE):PE icon
dhash icon 131163e1e1e1e1a0 (17 x SnakeKeylogger, 7 x Formbook, 2 x AveMariaRAT)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
197
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/241244/
Detection(s):
SecuriteInfo.com.FakeAV.CXA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Gathering data
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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/93b0a92b-6b3e-47bd-8df4-a23c26b27e73
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/939104
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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)
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
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 571582 Sample: invoice.exe Startdate: 14/02/2022 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 5 other signatures 2->49 11 invoice.exe 19 2->11         started        process3 file4 33 C:\Users\user\AppData\Local\...\rackgtmr.exe, PE32 11->33 dropped 14 rackgtmr.exe 11->14         started        process5 signatures6 57 Multi AV Scanner detection for dropped file 14->57 59 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->59 61 Tries to detect virtualization through RDTSC time measurements 14->61 63 Injects a PE file into a foreign processes 14->63 17 rackgtmr.exe 14->17         started        process7 signatures8 35 Modifies the context of a thread in another process (thread injection) 17->35 37 Maps a DLL or memory area into another process 17->37 39 Sample uses process hollowing technique 17->39 41 Queues an APC in another process (thread injection) 17->41 20 explorer.exe 17->20 injected process9 process10 22 control.exe 20->22         started        signatures11 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        27 explorer.exe 1 150 22->27         started        29 explorer.exe 111 22->29         started        process12 process13 31 conhost.exe 25->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73/
Threat name:
Win32.Trojan.GenericML
Create hunting rule
Status:
Malicious
First seen:
2022-02-14 06:14:09 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wx2tlsql23op2tbd3wvga7rq77yynerd6u3dvu53dbxfozxj3rzq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0418190aadd19ac9ea51c98d516f178ce5378a5d4354d44a9b49ac814b49325e
Formbook
22099fbafc3dda95912c51aa0c313826f21e2fe84ef51453c649f66ab29c6916
Formbook
7cbd8cc35b03d65491ad01b6a44b84dc047e6663189554201c24dbfbeb81473c
Formbook
820b1216485962fa3501dc8bd02a76bdb821fd7b6ffab858c4ebe135c4246090
Formbook
88d97538adda1f29e2f088883d64db0776c2f7e9c80a2a789785c4af970ec129
Formbook
af7abd08a5752f55f59e38b2bd9568943ada7d2b23ddc3324b735beebd8846ce
Formbook
b7cf8d9d8db4c5eaf796d35251bfc2b24f34c2c77d2ca82a1ebf470323c0894f
Formbook
d2cc3484cdabe8305bf9afd35530ca1118ca2c308408dc7140c3a94b392b60bb
Formbook
+ 13'262 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n6i5 loader rat
Link:
https://tria.ge/reports/220214-gyrb2affh3/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
8e559beb07888fd164595f7bd3e0b8a831e5f46ad43299f531d6a9a8bc81b044
MD5 hash:
df3ff08b2e940635f7869caed599ba7a
SHA1 hash:
1650d406a9101e56960bcf7b8bea214f66000d6f
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/6727a794-8351-49c9-b175-332d0ce72c73/
Parent samples :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 hash:
92c7f92d41429b0c598ed5c05a475de25ad423642aacd83ce19d80dbc4c4c043
MD5 hash:
7a7cf4697b977c798a44dde42a7434c4
SHA1 hash:
f69a528e1e2737ba35817c78ebd6752da7dbadd5
Link:
https://www.unpac.me/results/6727a794-8351-49c9-b175-332d0ce72c73/
SH256 hash:
b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73
MD5 hash:
476025c59bf12eb32d8d03a47bec669f
SHA1 hash:
3879b0c48cbd9776fa68ca8ab0c4b128609304c8
Link:
https://www.unpac.me/results/6727a794-8351-49c9-b175-332d0ce72c73/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b5f535ca0bd6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe b5f535ca0bd6dcfd4c23ddaa607e30fff1869223f5363ad3bb186e5766e9dc73

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/241244/

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