MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a777ab5f9fd6e6aa4f4d70b5168f4358c849f3ab461a3d15d315c83fe351272d. 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: a777ab5f9fd6e6aa4f4d70b5168f4358c849f3ab461a3d15d315c83fe351272d
SHA3-384 hash: ffaeedc88c845f11b335e5eccd61cf6e2c582f8583bdc2898025075abf1215a87ef7b6720e11ca7350e0ec4c2f30d12d
SHA1 hash: 951e3401e580e7f92785f1592087510d73272aa5
MD5 hash: e91e636589db74d3890558b318006dba
humanhash: carolina-finch-pasta-michigan
File name:Swift0015423.Scan.pdf..exe
Download: download sample
Signature FormBook
Create hunting rule
File size:340'992 bytes
First seen:2020-08-04 06:31:26 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 6144:TPvygIk81+9uBIfa2bxzF5K6G+H/c8NfTweXnWVjyfO:TXygjs+oGPzF86G+U8/XWVjcO
Threatray 5'325 similar samples on MalwareBazaar
TLSH 55741219738E5AA5DA7D63FC0952938083B0AE4A5843FBC59ED530F9EE257C18522FC3
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

From: Alberto Serna <allison@nagle.gq>
Subject: RE: RE: Pago
Attachment: Swift0015423.Scan.pdf.rar (contains "Swift0015423.Scan.pdf..exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38180/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
DNS request
Connection attempt
Setting browser functions hooks
Unauthorized injection to a browser process
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/408641
Signature
Benign windows process drops PE files
Detected FormBook malware
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspicious Svchost Process
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256555 Sample: Swift0015423.Scan.pdf..exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 54 Malicious sample detected (through community Yara rule) 2->54 56 Yara detected FormBook 2->56 58 Machine Learning detection for sample 2->58 60 5 other signatures 2->60 10 Swift0015423.Scan.pdf..exe 2 2->10         started        process3 signatures4 82 Tries to detect virtualization through RDTSC time measurements 10->82 84 Injects a PE file into a foreign processes 10->84 13 Swift0015423.Scan.pdf..exe 10->13         started        16 Swift0015423.Scan.pdf..exe 10->16         started        process5 signatures6 86 Modifies the context of a thread in another process (thread injection) 13->86 88 Maps a DLL or memory area into another process 13->88 90 Sample uses process hollowing technique 13->90 92 Queues an APC in another process (thread injection) 13->92 18 explorer.exe 4 6 13->18 injected process7 dnsIp8 48 www.karleenleveille.net 74.208.236.56, 49741, 49742, 49743 ONEANDONE-ASBrauerstrasse48DE United States 18->48 50 lanaforge.com 162.255.119.190, 49733, 80 NAMECHEAP-NETUS United States 18->50 52 4 other IPs or domains 18->52 42 C:\Users\user\AppData\...\4h6hzlh6lh8.exe, PE32 18->42 dropped 68 System process connects to network (likely due to code injection or exploit) 18->68 70 Benign windows process drops PE files 18->70 23 help.exe 1 17 18->23         started        27 4h6hzlh6lh8.exe 2 18->27         started        29 4h6hzlh6lh8.exe 2 18->29         started        31 2 other processes 18->31 file9 signatures10 process11 file12 44 C:\Users\user\AppData\...\556logrv.ini, data 23->44 dropped 46 C:\Users\user\AppData\...\556logri.ini, data 23->46 dropped 72 Detected FormBook malware 23->72 74 Tries to steal Mail credentials (via file access) 23->74 76 Tries to harvest and steal browser information (history, passwords, etc) 23->76 80 2 other signatures 23->80 33 cmd.exe 1 23->33         started        35 4h6hzlh6lh8.exe 27->35         started        38 4h6hzlh6lh8.exe 29->38         started        78 Tries to detect virtualization through RDTSC time measurements 31->78 signatures13 process14 signatures15 40 conhost.exe 33->40         started        62 Modifies the context of a thread in another process (thread injection) 35->62 64 Maps a DLL or memory area into another process 35->64 66 Sample uses process hollowing technique 35->66 process16
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a777ab5f9fd6e6aa4f4d70b5168f4358c849f3ab461a3d15d315c83fe351272d/
Threat name:
ByteCode-MSIL.Trojan.Swotter
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 05:42:17 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u532wx4723tkut2noc2rnd2dldeet45liynd2fotcxed7y2re4wq._file
Verdict:
malicious
Similar samples:
08c04f257dbf34e406e95901c084a0f00efd77ab0bb4d03ba228ecb3f9260d7e
FormBook
3beb95c4f83e5f7d1af897311a6cd1d8abfb04c656ca73d7f4c8db6ad6e5d150
FormBook
6f827b68129d30609057c2e6b36be05649fce91d6bc8ee3d3566ca5c6aba562b
FormBook
8604f9cf7a68603106748dcd54ec4bf13f11ac46bf07d4fa0ec20d45b98e16c9
FormBook
8fb2b9dc001a9dda1b56963034f4957c33e13cf502ab963630100350c0143bce
FormBook
a1ad8bfdcc01c3b59fce9cf7c4ea716f46c5e562d1fbfda663a03fcb3b21fc59
FormBook
c29af14bba547ce94a8a7c2d7f71d30ebd0df541b604b4dfa400700601755efb
FormBook
d3664113994262962936ebe74d0355986970def0cd0bcdcf088fe102047df9ba
FormBook
e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
FormBook
fc7f170e0b18f35f5d150ec384f7d7db8cd790bdac22d469424515225ab30658
FormBook
+ 5'315 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat persistence spyware evasion trojan stealer family:formbook
Link:
https://tria.ge/reports/200804-ap4nth53b2/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
System policy modification
Modifies Internet Explorer settings
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads user/profile data of web browsers
Deletes itself
Adds policy Run key to start application
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/a777ab5f9fd6e6aa4f4d70b5168f4358c849f3ab461a3d15d315c83fe351272d

File information

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

Malspam

FormBook

rar 6fc0143c0a14171b29c8fa994282404afa0840c15a40ff47adaa33bc5d016fde

FormBook

Executable exe a777ab5f9fd6e6aa4f4d70b5168f4358c849f3ab461a3d15d315c83fe351272d

(this sample)

  
Dropped by
MD5 f488d6db37e22a68c0dded2da1d91c1d
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38180/
  
Dropped by
SHA256 6fc0143c0a14171b29c8fa994282404afa0840c15a40ff47adaa33bc5d016fde

Comments