MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3
SHA3-384 hash: 671429e2c064af2b9eaa9149f9324d007543fd437e6a0fe87edfb5c13d9e4799fac01fe2d7ac5046a3b3deb058fc3bb1
SHA1 hash: 66fd52f0b2e2ff4bd0cac1fc8fb87e235acd15f3
MD5 hash: 31dd94809b63dec3786dbc56133b959b
humanhash: washington-bakerloo-spaghetti-mike
File name:Quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:510'464 bytes
First seen:2020-10-12 06:19:57 UTC
Last seen:Never
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:HBsaQbJOBRxBOTYfOhQqXIVtVG3xXujwB:Oa4QP4YG3Y/w3LB
TLSH 55B49DF13682E84AFC6A837199F085C3F57622F63F50850DBDAE831C4E275165B9236B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: apioptimum.live
Sending IP: 80.85.157.83
From: AMERICAN IMPORT&EXPORT COMPANY<Sherry343@apioptimum.live>
Subject: RE: INQUIRY/QUOTE REQUEST
Attachment: Quotation.zip (contains "Quotation.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
93
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/69963/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
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/488047
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
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)
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)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 296482 Sample: Quotation.exe Startdate: 12/10/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus / Scanner detection for submitted sample 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 5 other signatures 2->40 10 Quotation.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\...\Quotation.exe.log, ASCII 10->28 dropped 30 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\Temp\...\D.dll, PE32 10->32 dropped 48 Writes to foreign memory regions 10->48 50 Allocates memory in foreign processes 10->50 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 AddInProcess32.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 process9 19 cscript.exe 17->19         started        signatures10 42 Modifies the context of a thread in another process (thread injection) 19->42 44 Maps a DLL or memory area into another process 19->44 46 Tries to detect virtualization through RDTSC time measurements 19->46 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-10-12 03:25:25 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jzys6xpvdpczoc4wfmlqz7phu3gsayrkyzywjjxscalflkfh27zq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201012-gkfdmdae3e/
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 SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.iassistremote.com/ku7x/
Unpacked files
SH256 hash:
4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3
MD5 hash:
31dd94809b63dec3786dbc56133b959b
SHA1 hash:
66fd52f0b2e2ff4bd0cac1fc8fb87e235acd15f3
Link:
https://www.unpac.me/results/ea601ce3-5def-4cb4-8684-99ed3385a62d/
SH256 hash:
89aa143c91d8cace96581d1ad1e4a67060238498168d9e412227019a838574a3
MD5 hash:
beadcc53a3524ce380a7b07b4da47d57
SHA1 hash:
7014b2381ef1ca0f0c8f1b0884315260dc73932f
Link:
https://www.unpac.me/results/ea601ce3-5def-4cb4-8684-99ed3385a62d/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/ea601ce3-5def-4cb4-8684-99ed3385a62d/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
f8bee4108a324df32ad5a2ebafa6b7f411402a21e2598cf9db66486970f80fdd
MD5 hash:
a92da98ff6f5ae608503d074617bcc2a
SHA1 hash:
d3eafcccca011bb3a7a5ae52dd9704ceafcde472
Link:
https://www.unpac.me/results/ea601ce3-5def-4cb4-8684-99ed3385a62d/
SH256 hash:
7d7d92e823354b88e25f5e8d55cf2fa1f35f97086b2728d1823e8e752a8f9dc1
MD5 hash:
4aac681aaf3058f8a1f24cf75d18523c
SHA1 hash:
6ebbf7ade9f20b3f9bdc7fb4401bb25b820a0de4
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ea601ce3-5def-4cb4-8684-99ed3385a62d/
Parent samples :
4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3
718d659864d771ebadf82d8b5461d39c2bd6bd514ea2d2273d2821a23ab28ed0
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/4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

Formbook

zip cf505fce06430c2a9841a611cfbba10bcf08f3cdf1f90d5249ed1fd2eb8d6338

Formbook

Executable exe 4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3

(this sample)

  
Dropped by
MD5 7346d01febf46c6c13e562dd7045d785
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 cf505fce06430c2a9841a611cfbba10bcf08f3cdf1f90d5249ed1fd2eb8d6338
Cape
Cape
https://www.capesandbox.com/analysis/69963/

Comments