MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7d55f5145ac91a9b2e9d1b98f65bf6844248ebd6612be241e2fe5755dcf0733. 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: b7d55f5145ac91a9b2e9d1b98f65bf6844248ebd6612be241e2fe5755dcf0733
SHA3-384 hash: 53bac04386ff94cde07ca8b803dc7f38941a3c50ee271c38e74ec05999ca6119522e34164e1af0676601f4b9aec38807
SHA1 hash: e4b671f691c4b067743de9e2ff2a91b534c183a1
MD5 hash: 87472467d8185998553cc37afce80bbd
humanhash: rugby-autumn-rugby-april
File name:Bank Receipt.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:434'176 bytes
First seen:2020-10-23 08:53:43 UTC
Last seen:2020-10-23 10:09:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:cX/pAyQCcWEQEHdgP1yH6NmUVtiPU9MoCb+807yYjAAIsCjZUt1C:iRQqEHd6NXlM3bZ02GKsm
Threatray 2'652 similar samples on MalwareBazaar
TLSH 81943A2DA70AFF70E86BA570400650F20A22FFD25976F11B7F413D9DDD926890EDAA43
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: ultimatecircle.com.my
Sending IP: 95.211.208.23
From: sales@ultimatecircle.com.my
Subject: RE: PAYMENT INSTRUCTIONS
Attachment: Bank Receipt.zip (contains "Bank Receipt.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/74983/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.30652.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Running batch commands
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Launching a process
Creating a file
Sending a UDP request
Enabling autorun
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/507941
Signature
Creates an undocumented autostart registry key
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 303092 Sample: Bank Receipt.exe Startdate: 23/10/2020 Architecture: WINDOWS Score: 100 54 www.etiquetadorada.com 2->54 62 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 7 other signatures 2->68 11 Bank Receipt.exe 7 2->11         started        signatures3 process4 file5 48 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 11->48 dropped 50 C:\Users\user\...\Bank Receipt.exe.log, ASCII 11->50 dropped 52 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 11->52 dropped 80 Injects a PE file into a foreign processes 11->80 15 Bank Receipt.exe 11->15         started        18 cmd.exe 1 11->18         started        20 cmd.exe 3 11->20         started        23 cmd.exe 1 11->23         started        signatures6 process7 file8 82 Modifies the context of a thread in another process (thread injection) 15->82 84 Maps a DLL or memory area into another process 15->84 86 Sample uses process hollowing technique 15->86 88 Queues an APC in another process (thread injection) 15->88 25 explorer.exe 15->25 injected 29 reg.exe 1 1 18->29         started        31 conhost.exe 18->31         started        44 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 20->44 dropped 33 conhost.exe 20->33         started        46 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 23->46 dropped 35 conhost.exe 23->35         started        signatures9 process10 dnsIp11 56 thedetroitmasquerade.com 34.102.136.180, 49734, 80 GOOGLEUS United States 25->56 58 www.longhu152.com 154.208.163.79, 49737, 80 CNSERVERSUS Seychelles 25->58 60 2 other IPs or domains 25->60 76 System process connects to network (likely due to code injection or exploit) 25->76 37 NETSTAT.EXE 25->37         started        78 Creates an undocumented autostart registry key 29->78 signatures12 process13 signatures14 70 Modifies the context of a thread in another process (thread injection) 37->70 72 Maps a DLL or memory area into another process 37->72 74 Tries to detect virtualization through RDTSC time measurements 37->74 40 cmd.exe 1 37->40         started        process15 process16 42 conhost.exe 40->42         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b7d55f5145ac91a9b2e9d1b98f65bf6844248ebd6612be241e2fe5755dcf0733/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-23 07:11:25 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=w7kv6ukfvsi2tmxj2g4y6zn7nbccjdv5myjl4ja6f7sxkxopa4zq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1a4afa3e1d1087c27e7d4c724a87611f7ed901dffb86943ef05d1015614b0e32
Formbook
2abd32fd6ec97ad3fa0d675153247b7449025f7087a7dfdee569143f195d2cf5
Formbook
5354b3a337fe1f19dbbcd98ebbea35e58fd953c86b99cb1678d8f9c849e8d55c
Formbook
691e25f141a0389dec22a7f9027a57ff7242cd2918f525e3c22e81c863f803c9
Formbook
8ce26cc2fb22fe3d89d7f4bd9ea925f0719ff9208b4e37b1f71b9d4e810bcc0c
Formbook
ab8c3b31b7abfcd76554ac8640d5781860ba99d878fb128ed313c64eeef6e39d
Formbook
b7f9546fa9fb928d856b69a70174d693a84c641ad193e88e48c07cdb92751e03
Formbook
eacd132f69b64ef7a47c959fd92f50343be23e5768f0476c665870f5de4f89ee
Formbook
ec4ee2fa916e9fc280f06af0ceded7835693723ebbc6c60bd6e371b5d4ad006a
Formbook
f397c24f2c684fdcd51dc9954c641d013437a78e24a5cf8c8778196a66a60372
Formbook
+ 2'642 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201023-8wp996fmtn/
Behaviour
NTFS ADS
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
Formbook Payload
Formbook
Unpacked files
SH256 hash:
b7d55f5145ac91a9b2e9d1b98f65bf6844248ebd6612be241e2fe5755dcf0733
MD5 hash:
87472467d8185998553cc37afce80bbd
SHA1 hash:
e4b671f691c4b067743de9e2ff2a91b534c183a1
Link:
https://www.unpac.me/results/d36ce991-3436-4036-b5c8-6f055629ace8/
SH256 hash:
f1c8b375b9aaa998f98124b440f29391d60468ae6bcd9cb08f0f9e9024f21c49
MD5 hash:
37b9a7a1578db2572c36f7907672dee0
SHA1 hash:
7d917c3fc6f689ce438b5bb0772f33fcffd7f1b3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d36ce991-3436-4036-b5c8-6f055629ace8/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

Formbook

zip cac54be6a4bbf126fece5abd6809961b7add5e7d9a4e9d62f364a31f8b53655b

Formbook

Executable exe b7d55f5145ac91a9b2e9d1b98f65bf6844248ebd6612be241e2fe5755dcf0733

(this sample)

  
Dropped by
MD5 36ac27a313643e37968f867a060ca8c3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74983/
  
Dropped by
SHA256 cac54be6a4bbf126fece5abd6809961b7add5e7d9a4e9d62f364a31f8b53655b

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