MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c. 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: f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c
SHA3-384 hash: 823c96bb78661680bd75bd6de39992e24038a63265ff241c6e0cb117f873df8de39eef93761b6e9be56874b991577113
SHA1 hash: be0ccb384d79527d6861dc4999e8bea2197a368d
MD5 hash: 80338c0fd0b356384c5c238cd0167aa6
humanhash: stairway-cold-nebraska-diet
File name:k7j7Sua3JrEZNPR.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:645'632 bytes
First seen:2020-10-09 10:41:56 UTC
Last seen:2020-10-09 11:52:47 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:Z69GsBvGUy0zC2FKajXx7AiOTfszxFF6pNAqFU7VbRe9T8A:1sknmQajd/OTfsL0pNAP7lu
Threatray 2'391 similar samples on MalwareBazaar
TLSH AAD4128A52F9230ED51E5FF721F5460857771E31256EE70E7D78B4B222B37CA1820BA2
Reporter abuse_ch
Tags:exe FormBook Yahoo


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: sonic312-20.consmr.mail.bf2.yahoo.com
Sending IP: 74.6.128.82
From: susan harrell <susan88harreil@yahoo.com>
Subject: : Fwd: Wire Transfer Payment
Attachment: USDE9749.rar (contains "k7j7Sua3JrEZNPR.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
125
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/69525/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
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/486635
Signature
.NET source code contains potential unpacker
Detected FormBook malware
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
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 295761 Sample: k7j7Sua3JrEZNPR.exe Startdate: 09/10/2020 Architecture: WINDOWS Score: 100 45 www.bodygoalsspa.com 2->45 47 www221.wixdns.net 2->47 49 balancer.wixdns.net 2->49 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for dropped file 2->59 61 Sigma detected: Scheduled temp file as task from temp location 2->61 63 10 other signatures 2->63 11 k7j7Sua3JrEZNPR.exe 6 2->11         started        signatures3 process4 file5 39 C:\Users\user\AppData\Roaming\qROGyQuA.exe, PE32 11->39 dropped 41 C:\Users\user\AppData\Local\...\tmpC8A3.tmp, XML 11->41 dropped 43 C:\Users\user\...\k7j7Sua3JrEZNPR.exe.log, ASCII 11->43 dropped 75 Tries to detect virtualization through RDTSC time measurements 11->75 77 Injects a PE file into a foreign processes 11->77 15 k7j7Sua3JrEZNPR.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 81 Modifies the context of a thread in another process (thread injection) 15->81 83 Maps a DLL or memory area into another process 15->83 85 Sample uses process hollowing technique 15->85 87 Queues an APC in another process (thread injection) 15->87 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 51 luckyfoodexpress.com 198.12.243.132, 49752, 49753, 80 AS-26496-GO-DADDY-COM-LLCUS United States 20->51 53 www.shesoo.com 20->53 55 3 other IPs or domains 20->55 65 System process connects to network (likely due to code injection or exploit) 20->65 26 explorer.exe 18 20->26         started        signatures11 process12 file13 35 C:\Users\user\AppData\...\K1Alogrv.ini, data 26->35 dropped 37 C:\Users\user\AppData\...\K1Alogri.ini, data 26->37 dropped 67 Detected FormBook malware 26->67 69 Tries to steal Mail credentials (via file access) 26->69 71 Tries to harvest and steal browser information (history, passwords, etc) 26->71 73 3 other signatures 26->73 30 cmd.exe 2 26->30         started        signatures14 process15 signatures16 79 Tries to harvest and steal browser information (history, passwords, etc) 30->79 33 conhost.exe 30->33         started        process17
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-09 06:30:06 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6scu7naj2e3loqmtcrgfbseiwnv3xpg6og2svs27qf32qyxl25wa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2d9767641256c44bceb6d6c684e76d72245750d1174408ef34e5d35185d4cadb
FormBook
68894ee0bb21a9d71c6c95fe64fd7e366b2619bc14834ead54543a0eac2f28fc
FormBook
6fb6937cf1cdf0d1c89ba807e43754a2d06754cd820992dc0b91cb61540cf547
FormBook
7d7edb74ec4a4b30b75d0337169be83d230a384ba2bb9597c626aaeadbef8048
FormBook
7f9ae2230e8288dc9d2be085d10b696542ac35641853f0afc85ca08d48f3c154
FormBook
8f1df804a5fc826de1487d95db7e15faede754cd925132f7e920fd712e154208
FormBook
982d5516b54a9ca64fa7cf03833f79f4b963504652997cba751cee2b3ff96979
FormBook
a041901d7e7a00b59fb1c4a4e1b2cdb7e9acd7c554d0a13412e658cb42cf0d5b
FormBook
b494f8418799f094e809de1bbce3970f01ae7f19a0db6c494d25656ae7a04d0a
FormBook
c26d4b68739ba791b12255f3d1a390e40950f39bab9b75c4435c121596689eb9
FormBook
+ 2'381 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/201009-r83jsv41ke/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.trusted-inspections.com/k8b/
Unpacked files
SH256 hash:
f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c
MD5 hash:
80338c0fd0b356384c5c238cd0167aa6
SHA1 hash:
be0ccb384d79527d6861dc4999e8bea2197a368d
Link:
https://www.unpac.me/results/57f31aa9-e599-41ba-bcc9-80a93b02935b/
SH256 hash:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
Link:
https://www.unpac.me/results/57f31aa9-e599-41ba-bcc9-80a93b02935b/
SH256 hash:
816f7389cc1efca7a40d9b6013647e266efb9a97406f09a1067081640127f94e
MD5 hash:
742232e383f5e33e1f0cad525bd78824
SHA1 hash:
a961c1ed6d1f4a1d7a093deff08f9a4ebccdd952
Link:
https://www.unpac.me/results/57f31aa9-e599-41ba-bcc9-80a93b02935b/
SH256 hash:
5a144f9e72d86bf7789929db2bb48481a8ce2d876da64d70c74a456658dc0b97
MD5 hash:
78d30848461d468119773c4c949b10b0
SHA1 hash:
91f23f2766aa75da9c6fb67e1dc437f87c2422a5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/57f31aa9-e599-41ba-bcc9-80a93b02935b/
Parent samples :
da111408d9dccb99b2c429d535ca55f6e970d911da4c24553e75d02fe9c00489
1d1a49643433922eecfd7e1a27fd7389c2837f2698d89226b07e387ebb27054c
07528f3c583c546d2b444b091c3ede380c6427ed0691b95294c7e32dd35560ab
d4014ac2689b47f11708425cad3d8aa02dd05ee6d6745006156dffbe0a27b4be
4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922
f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c
db53a27c43dddb419e9d058e6288f3c1e7fc7e4bd62e3bb048e7103dcf79d682
f397c24f2c684fdcd51dc9954c641d013437a78e24a5cf8c8778196a66a60372
76e0bf03767dfd6316810d96d2404daf16397a0ef3b90daf96ad67bc461209a8
3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec
1df003f8242579db0d215e8b75e999a15021b4ff7b49b7d7d90a90fb8ca4e6a1
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c

File information

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

Malspam

FormBook

rar 7fb4179528efb33ae2857193ccd09307b4e6a803ea957544ef6024ed246e5493

FormBook

Executable exe f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c

(this sample)

  
Dropped by
MD5 e3f7b8ab895307f153b7ff5e6319adb5
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/69525/
  
Dropped by
SHA256 7fb4179528efb33ae2857193ccd09307b4e6a803ea957544ef6024ed246e5493

Comments