MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93
SHA3-384 hash: 7a31f3aebfd19ff7a4c0e77ccdc4c6f50d6a46dcd854b7aa19e6983c259db923b9f63dd1b1b2485baf4c93c9144d673e
SHA1 hash: 76504a9971ccb8418685c59db5614457533c7225
MD5 hash: e19578806780803402035c086add1f5b
humanhash: summer-romeo-comet-georgia
File name:PO_768960.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:782'336 bytes
First seen:2020-08-31 11:25:09 UTC
Last seen:2020-08-31 12:17:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:F8LFEpX2lQK0UadpvWqo3/nmBydeewXAz59FtOFyfCUMG4u8pOKFnpG8sRnterXV:FA7a7vWvXeeZvQ9UMq8xFLkn68ac
Threatray 2'248 similar samples on MalwareBazaar
TLSH BCF4D013131E9B2DD81877B9349041DCE2F16F81FF38E0D8EE4B71E9656A24EA5DD282
Reporter abuse_ch
Tags:exe FormBook GoDaddy


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: p3nlsmtpcp01-02.prod.phx3.secureserver.net
Sending IP: 184.168.200.140
From: Danielle Aurora <info@saladasalmundo.com>
Subject: RE: Re: Re: PO_768960
Attachment: PO_768960.rar (contains "PO_768960.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
169
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53443/
Detection(s):
SecuriteInfo.com.Generic.mg.e195788067808034.27649.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/455346
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses netstat to query active network connections and open ports
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 280051 Sample: PO_768960.exe Startdate: 31/08/2020 Architecture: WINDOWS Score: 100 58 www.designmastersw.com 2->58 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 Multi AV Scanner detection for submitted file 2->70 72 10 other signatures 2->72 11 PO_768960.exe 3 2->11         started        signatures3 process4 file5 56 C:\Users\user\AppData\...\PO_768960.exe.log, ASCII 11->56 dropped 96 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 11->96 98 Tries to detect virtualization through RDTSC time measurements 11->98 100 Injects a PE file into a foreign processes 11->100 15 PO_768960.exe 11->15         started        signatures6 process7 signatures8 102 Modifies the context of a thread in another process (thread injection) 15->102 104 Maps a DLL or memory area into another process 15->104 106 Sample uses process hollowing technique 15->106 108 Queues an APC in another process (thread injection) 15->108 18 explorer.exe 3 7 15->18 injected process9 dnsIp10 60 www.all-mat.com 217.160.0.94, 49732, 80 ONEANDONE-ASBrauerstrasse48DE Germany 18->60 62 www.mdtweet.com 18->62 64 www.6365zi.com 18->64 48 C:\Users\user\AppData\...\w4wpi4dp2dxdjl.exe, PE32 18->48 dropped 50 C:\Program Files (x86)\...\w4wpi4dp2dxdjl.exe, PE32 18->50 dropped 80 System process connects to network (likely due to code injection or exploit) 18->80 82 Benign windows process drops PE files 18->82 23 wlanext.exe 1 17 18->23         started        27 w4wpi4dp2dxdjl.exe 3 18->27         started        29 NETSTAT.EXE 18->29         started        31 w4wpi4dp2dxdjl.exe 2 18->31         started        file11 signatures12 process13 file14 52 C:\Users\user\AppData\...\O6-logrv.ini, data 23->52 dropped 54 C:\Users\user\AppData\...\O6-logri.ini, data 23->54 dropped 84 Detected FormBook malware 23->84 86 Tries to steal Mail credentials (via file access) 23->86 88 Tries to harvest and steal browser information (history, passwords, etc) 23->88 94 2 other signatures 23->94 33 cmd.exe 1 23->33         started        90 Injects a PE file into a foreign processes 27->90 35 w4wpi4dp2dxdjl.exe 27->35         started        92 Tries to detect virtualization through RDTSC time measurements 29->92 38 w4wpi4dp2dxdjl.exe 31->38         started        40 w4wpi4dp2dxdjl.exe 31->40         started        42 w4wpi4dp2dxdjl.exe 31->42         started        44 2 other processes 31->44 signatures15 process16 signatures17 46 conhost.exe 33->46         started        74 Modifies the context of a thread in another process (thread injection) 35->74 76 Maps a DLL or memory area into another process 35->76 78 Sample uses process hollowing technique 35->78 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 03:39:04 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jobxko7aaxjwnbmskwow7yar7wszavmpomaub5wdanyuvsh6bwjq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0a06767c6ec2249902ef118e04b2044b9784b544b81a7f5e253ae373fd706ceb
FormBook
112b6fe2084ca3501c8a98a9cd90f60ce691a438864be736b049062379195818
FormBook
2302aa79bb34eb683a91324995a9fb366bbbe55dffb53deee00b842e75ad19c0
FormBook
3374d3d11eef1e8fc48019fccac4fb5475ce8fec60c5e019c64662723fd5c1b3
FormBook
538026aea095085f7a8cd260a783b5495592a90ed7df928d6db87b7e2a3b8675
FormBook
6f827b68129d30609057c2e6b36be05649fce91d6bc8ee3d3566ca5c6aba562b
FormBook
9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314
FormBook
cd88f1f0051fb232edba57fff3fc2b789e0b286ec9b938d8f31c3ef52c6848df
FormBook
f01e05ea7a73c604ae68acbced809fa9a249818994aae64af13010b3ea82c892
FormBook
fc714509dc4c3d6f3e13028be7be8207b2377331266c8ce213c575e511f8d31f
FormBook
+ 2'238 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat evasion trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200831-dk1928pyle/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Deletes itself
Looks for VMWare Tools registry key
Formbook Payload
Looks for VirtualBox Guest Additions in registry
Formbook
Malware Config
C2 Extraction:
http://www.mansiobok.info/hx119/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93

File information

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

Malspam

FormBook

rar 2a7215c4ff390ff59e9642db83711ca7a7059277e3925dec73c556b0eb177fb0

FormBook

Executable exe 4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93

(this sample)

  
Dropped by
MD5 8fdd6161d6a92f60623ef973860b55d1
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2a7215c4ff390ff59e9642db83711ca7a7059277e3925dec73c556b0eb177fb0
Cape
Cape
https://www.capesandbox.com/analysis/53443/

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