MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d
SHA3-384 hash: 13cc5dcede55784a24514b79d1ebd983be12616b892ae39fe2bfc132cd70bac30b9beef4a974d6fbba8939d2a90bffff
SHA1 hash: 2fd0edd30b1ebde064006d7ad8a472ed53bcc585
MD5 hash: f9ec49cf157e61bdedd87a65345a8c4b
humanhash: edward-river-crazy-oregon
File name:n4T0oyolavjyp3w.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:681'984 bytes
First seen:2020-08-12 18:31:35 UTC
Last seen:2020-08-12 20:01:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:0qXBuFrftLo03+l03+2LweJxLfTcJ4bN9f0Yhq7SjUuuqy3WBU:0qXBuFrlLo03+l03+2LLJxjTcJ4B98MV
Threatray 5'474 similar samples on MalwareBazaar
TLSH FCE4BF6473958823D27A3E31C9BB551407BA7C57353EC71E6ACE33CE98313A94E107AA
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: alnassar.com.sa
Sending IP: 162.244.93.110
From: Smurfit Kappa Piteå <skswebb@smurfitkappa.se>
Reply-To: skswebb@smurfitkappa.se
Subject: Please quote me your best price for the attached purchase order
Attachment: DOC.IMG (contains "n4T0oyolavjyp3w.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/44433/
Detection(s):
SecuriteInfo.com.RSharedStrings.14695.8821.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/423633
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Binary contains a suspicious time stamp
Detected FormBook malware
Injects a PE file into a foreign processes
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)
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)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 264285 Sample: n4T0oyolavjyp3w.exe Startdate: 13/08/2020 Architecture: WINDOWS Score: 100 28 www.hamxw.com 2->28 40 Malicious sample detected (through community Yara rule) 2->40 42 Yara detected AntiVM_3 2->42 44 Yara detected FormBook 2->44 46 5 other signatures 2->46 9 n4T0oyolavjyp3w.exe 3 2->9         started        signatures3 process4 signatures5 56 Tries to detect virtualization through RDTSC time measurements 9->56 58 Injects a PE file into a foreign processes 9->58 12 n4T0oyolavjyp3w.exe 9->12         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 12->60 62 Maps a DLL or memory area into another process 12->62 64 Sample uses process hollowing technique 12->64 66 Queues an APC in another process (thread injection) 12->66 15 explorer.exe 12->15 injected process8 dnsIp9 32 www.hamxw.com 170.130.186.34, 80 EONIX-COMMUNICATIONS-ASBLOCK-62904US United States 15->32 34 www.shanghailc.com 104.203.81.223, 49748, 49749, 49750 ENZUINC-US United States 15->34 36 192.168.2.1 unknown unknown 15->36 38 System process connects to network (likely due to code injection or exploit) 15->38 19 msdt.exe 17 15->19         started        signatures10 process11 dnsIp12 30 www.hamxw.com 19->30 24 C:\Users\user\AppData\...\349logrv.ini, data 19->24 dropped 26 C:\Users\user\AppData\...\349logri.ini, data 19->26 dropped 48 Detected FormBook malware 19->48 50 Tries to steal Mail credentials (via file access) 19->50 52 Tries to harvest and steal browser information (history, passwords, etc) 19->52 54 3 other signatures 19->54 file13 signatures14
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-08-12 18:33:09 UTC
AV detection:
7 of 48 (14.58%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lf4tygwj3bjx4buznmfat4lb324yu56ve6ylzf5rrykzolysbiwq._file
Verdict:
malicious
Similar samples:
11ed9b9e406c0dd0f8eebc68a84ed4790d73d051584206acce260627390ec049
FormBook
30d3cf43f91eea8df889ee14337ca8067bc68521ff63184c679aac80b321bb75
FormBook
478dce496a9eca179f7503d76fa70a27d85e2e8547b81b5c80fc7433122085c3
FormBook
8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414
FormBook
9e31a9eedd25bd1b57d01f6f9f265cf5d13218f3e3e1866128d061ba5c77c452
FormBook
b5cfea4c983458975c376cb9ff0ebd5feb4a426dc83c9db60264678a43eef6e9
FormBook
bf694824d6cbf6fba77ce087678b03ee8243a245b4b730eb55fb83e83b8dff8e
FormBook
bfb2fd4412e9cd136a794f61436d597d7d58fb4fd842509dabe7a70344e4fd97
FormBook
e224e30554ce3a83c6ef2ca1c81b50ca377486f55bed19078658578bbef844f0
FormBook
ea74eac48adf2b19c3102578cb14ee0cd1d51f5e5e1da2fb4ab5b0d3f7e91827
FormBook
+ 5'464 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/200812-vkl8s4k26a/
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
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.regulars6.com/w5fk/
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/59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d

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:RSharedStrings
Create hunting rule
Author:Katie Kleemola
Description:identifiers for remote and gmremote

File information

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

Malspam

FormBook

img 83d17102ab93f2a1b958edb89b53e529f67b1df0043944af5271589020ec61ab

FormBook

Executable exe 59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d

(this sample)

  
Dropped by
MD5 9d19bdfa8c998d3043f9ef42ce01cc3e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/44433/
  
Dropped by
SHA256 83d17102ab93f2a1b958edb89b53e529f67b1df0043944af5271589020ec61ab

Comments