MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba. 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: a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba
SHA3-384 hash: 37244728b6b44c29519e82b668812cfb8997b24017b3d198fb7c1d9faa789484c3e58bcf6b17beee25a3040fc9524edf
SHA1 hash: 76b0a20b9b86057e42df99e5f5f30be57a06f320
MD5 hash: e5c21682444f59793a1c2704d90ead6d
humanhash: carbon-lake-jersey-sixteen
File name:new po775.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:759'808 bytes
First seen:2020-11-25 14:07:57 UTC
Last seen:2020-11-26 07:12:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:CvMIt03+T5zPvE5BSTZcC1DkQl7q8kIaTMf4o:Jbq5LvE5Yn1DkQl7vkho
Threatray 3'077 similar samples on MalwareBazaar
TLSH DCF48B27735C8798D7AC3FF5A43000BF31A5DE11426DF66CCEE6EC8B5B625A810B6681
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/105640/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Gathering data
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/547003
Signature
Antivirus / Scanner detection for submitted sample
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 322608 Sample: new po775.exe Startdate: 25/11/2020 Architecture: WINDOWS Score: 100 31 www.downrangedynamics.com 2->31 33 downrangedynamics.com 2->33 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 7 other signatures 2->45 11 new po775.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\new po775.exe.log, ASCII 11->29 dropped 55 Injects a PE file into a foreign processes 11->55 15 new po775.exe 11->15         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.goudmarket.com 185.182.57.55, 49735, 80 ASTRALUSNL Netherlands 18->35 37 www.mingjiaxuan.com 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 systray.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/a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-11-25 14:08:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vcg3qmoc3pjhrfox2bbkhzhgas6yfsvng7kr7tghnx5ydwee765a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ba1cd5068eb222e21bf0f4799f531c5dc07849d4920d3410a78b4aef0559ac8
Formbook
215b1bcebe9fb50bc7b3aaa67325559c5a8997f2101709fcb3459bf344274f56
Formbook
23cb1d198cca93539a5bdbf18ce44ae3692be0ae968b5fe55e3794ec481aa1cf
Formbook
2693356eb785b39160f0dd89c916020ab5ae032faaa931b30c393e93da2740e4
Formbook
277cbccaab65669d5d245b53cc8dec596db650f30daf23c62b8a54cf93867b8d
Formbook
6c38cd22154fec33d60c57f97e3a4d09d481f30422c2d0b1a6a65ea65639dd69
Formbook
914712c702b94abb26e0d1edbd54712d62a2fdb6cfbc9bd41ac8bcb84296358f
Formbook
bec4389116e13ab9a8873d6f5c875044fc2cc92f5a462ad9fe5aeeef9a2ee1c1
Formbook
dde122ac5a5a8eb786e335b3278dc5aae9cd3635c889fc4eb641a7a69123954d
Formbook
e84b45b4e30dbdd8025a76075af204369ea5b1c638b7c15ec7998600936ce181
Formbook
+ 3'067 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook evasion rat spyware stealer trojan
Link:
https://tria.ge/reports/201125-gdl5vnactx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
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.firedoom.com/sbmh/
Unpacked files
SH256 hash:
a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba
MD5 hash:
e5c21682444f59793a1c2704d90ead6d
SHA1 hash:
76b0a20b9b86057e42df99e5f5f30be57a06f320
Link:
https://www.unpac.me/results/b91ab8ee-9169-47bd-8c52-130521029ad2/
SH256 hash:
a3a008b87ded765ed76c9bedd06dbae5f62edd573da15d376cb3fb91b4bd7f09
MD5 hash:
5ae25f51e2881f74cc9e057ef48c02a6
SHA1 hash:
a8e9e48e0e788e76ce01e923946bfb0c2098b39c
Link:
https://www.unpac.me/results/b91ab8ee-9169-47bd-8c52-130521029ad2/
SH256 hash:
4c81e80fca23a67532240a0ea1726ba460d47ce38b4a2053b65b88d5c2f09cd4
MD5 hash:
e07821ed5efe16a1c12328fdc6ab4f0f
SHA1 hash:
4a8ca99794df61434aa6d9fe948095ddac659c5e
Link:
https://www.unpac.me/results/b91ab8ee-9169-47bd-8c52-130521029ad2/
SH256 hash:
27b1ecec572e1a13fbb358e98be1468714a5faf8149704cba37be4eb274a28a8
MD5 hash:
787e6239a3e71e785051352b31bbbeaf
SHA1 hash:
70aa9c304aedee68bff878c895108a8e63b90a02
Link:
https://www.unpac.me/results/b91ab8ee-9169-47bd-8c52-130521029ad2/
SH256 hash:
76cda4a2cce2a7df151d7b6c79fcd53cde4006a64e018a84690236ba2d1e8335
MD5 hash:
41f05cd3fec86261b562d3f7e2513c29
SHA1 hash:
2c499304ca0bffd589dedb4bd629a832b5c201d6
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b91ab8ee-9169-47bd-8c52-130521029ad2/
Parent samples :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 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/a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba

File information

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

Malspam

Formbook

z 67f90cf15c7a6913a3004115b061117af74130e80de99f05915d11d79439e13e

Formbook

Executable exe a88db831c2dbd27895d7d042a3e4e604bd82caad37d51fccc76dfb81d884ffba

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 67f90cf15c7a6913a3004115b061117af74130e80de99f05915d11d79439e13e
Cape
Cape
https://www.capesandbox.com/analysis/105640/

Comments