MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f7a4fb1e88604fb0f7f534596c116aa3c0ed18da8ac307489d1dd3b616c00052. 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: f7a4fb1e88604fb0f7f534596c116aa3c0ed18da8ac307489d1dd3b616c00052
SHA3-384 hash: ce40acc22b93e56d085e447d06611a3395357198929d115a962c98bc3ab4abc7748339754a46eb31282a50eca0aacc31
SHA1 hash: 7727e32c1341ecc1f6f4fe8b1dad0162ff44a88b
MD5 hash: 1c2cf8cff682e529cac0eb07b15763b1
humanhash: october-tennessee-utah-idaho
File name:biggy.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:501'760 bytes
First seen:2020-08-25 11:40:56 UTC
Last seen:2020-08-25 13:01:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:+qu4I4arkpaGyLrdMiMBeKWzZsge4YS87PWJNfP:+markpaGSyiM9sex7OJ
Threatray 2'247 similar samples on MalwareBazaar
TLSH 31B412493AADA740E03D5F7911B2A10163F3E99BA7B6CD0E4EEC60DD33576C14E90B86
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: televes.com
Sending IP: 103.149.12.183
From: JENNY ZANG <acorrea@televes.com>
Subject: RE: USD Payment Confirmation
Attachment: 00A00Q99-TT.xlsx

Formbook payload URL:
http://103.149.12.183/biggy.exe

Formbook C2:
http://www.teanmer.com/5gb/

Intelligence

File Origin
# of uploads :
2
# of downloads :
104
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/50509/
Detection(s):
SecuriteInfo.com.Trojan.Siggen10.8900.8286.1344.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a file
Launching cmd.exe command interpreter
Forced shutdown of a system process
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/448896
Signature
Antivirus / Scanner detection for submitted sample
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 submitted file
Queues an APC in another process (thread injection)
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 AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 276796 Sample: biggy.exe Startdate: 25/08/2020 Architecture: WINDOWS Score: 100 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus / Scanner detection for submitted sample 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 5 other signatures 2->46 10 biggy.exe 1 2->10         started        process3 file4 32 C:\Users\user\AppData\Local\...\biggy.exe.log, ASCII 10->32 dropped 13 RegSvcs.exe 10->13         started        16 RegSvcs.exe 10->16         started        18 RegSvcs.exe 10->18         started        20 RegSvcs.exe 10->20         started        process5 signatures6 54 Modifies the context of a thread in another process (thread injection) 13->54 56 Maps a DLL or memory area into another process 13->56 58 Queues an APC in another process (thread injection) 13->58 22 explorer.exe 13->22 injected 60 Tries to detect virtualization through RDTSC time measurements 16->60 process7 dnsIp8 34 www.sportsss.net 22->34 36 www.mgwpqf.men 22->36 38 2 other IPs or domains 22->38 25 wlanext.exe 22->25         started        process9 signatures10 48 Modifies the context of a thread in another process (thread injection) 25->48 50 Maps a DLL or memory area into another process 25->50 52 Tries to detect virtualization through RDTSC time measurements 25->52 28 cmd.exe 1 25->28         started        process11 process12 30 conhost.exe 28->30         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f7a4fb1e88604fb0f7f534596c116aa3c0ed18da8ac307489d1dd3b616c00052/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-25 11:42:05 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=66spwhuimbh3b57vgrmwyelkupao2gg2rlbqose5dxj3mfwaabja._file
Verdict:
malicious
Label(s):
netwirerc
Create hunting rule
Similar samples:
049c930e35f038764e8bc794a6ef12474468b01457eac80483059ab91775c7ce
FormBook
18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47
FormBook
2ad145ebeae4ff20eeb893b16658fe43d7557f30c746edc355a5dceb393bf8bb
FormBook
310ac239dccf819be79922ba630c15f8adc5a66e4c0a8f562f9c01765b1271c6
FormBook
3e98d7f59e495ddfa5140a50f70347bb4a56296ca2dcb6602f65ebb4e4a0373b
FormBook
590fde182a154cd89b15d88546d60351b9fecb51e04fbbf4affd8d49a618bd23
FormBook
9b2c6f08cd9a4e3b144422de4d540290542ce50239f2c85697a036a461b25264
FormBook
9c0d3c463792d704909de3a04cd7a6d31f8094301e8e24950af31cdc5e9f2838
FormBook
bea57ca7d937bc5b3507382ba5fd4c4c155181a56cdaf0fba225e4aaa10699ec
FormBook
dea5303370177b621cdd1fd497396ddaa9e94d3edd1407339f52f0dc85a67046
FormBook
+ 2'237 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat persistence spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/200825-zs773pygys/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.teanmer.com/5gb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f7a4fb1e88604fb0f7f534596c116aa3c0ed18da8ac307489d1dd3b616c00052

File information

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

Malspam

Formbook

Excel file xlsx 0647f486b4210920b0df2892656bd434f60a715da8473a84f0b5e13a05e48cd0

FormBook

Executable exe f7a4fb1e88604fb0f7f534596c116aa3c0ed18da8ac307489d1dd3b616c00052

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/440908/
  
Dropped by
MD5 fb1e9e7bdad461d86d78fe9fedbb0992
  
Dropped by
SHA256 0647f486b4210920b0df2892656bd434f60a715da8473a84f0b5e13a05e48cd0
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/50509/

Comments