MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978. 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: f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978
SHA3-384 hash: 1fbeafe05a32e58e5f9837c0f38c7b956682acd97a0f2b146e09b6bcffabf6ae14e1d854a4baa6913cc36570241d6157
SHA1 hash: 1bae4dd09b2f0a82d4e696fbc4b6208d49ef383e
MD5 hash: a5da66fd0c48f3d4931c9d7aa4e5bc01
humanhash: pip-london-monkey-spaghetti
File name:Paymentcopy.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'077'248 bytes
First seen:2020-10-12 05:52:00 UTC
Last seen:Never
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:SgOLZogB0nupp+fO4qJLcs2G61PR34wvEotxFS0gIids7ty/ZDWXA1NlZQQ6xuAP:WLWgiuazfPS4SvOtyxDW8ZQQ6xuAP
Threatray 2'394 similar samples on MalwareBazaar
TLSH 4335F1101AA49FE2C87C8FF9513705040BB53A276A6AF11F2DC93ADE0DF5F508165BAB
Reporter abuse_ch
Tags:exe FormBook SCB


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: server.miyoshi.biz
Sending IP: 111.235.136.178
From: Standard Chartered Bank <Account@transfopam.com>
Reply-To: sjrkintluea@gmail.com
Subject: Advice from Standard Chartered Bank
Attachment: Paymentcopy..arj (contains "Paymentcopy.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/69905/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
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
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/487920
Signature
.NET source code contains potential unpacker
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)
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
Uses netstat to query active network connections and open ports
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 296404 Sample: Paymentcopy.exe Startdate: 12/10/2020 Architecture: WINDOWS Score: 100 31 www.azadvisors.com 2->31 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected AntiVM_3 2->39 41 Yara detected FormBook 2->41 43 6 other signatures 2->43 11 Paymentcopy.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\Paymentcopy.exe.log, ASCII 11->29 dropped 53 Tries to detect virtualization through RDTSC time measurements 11->53 55 Injects a PE file into a foreign processes 11->55 15 Paymentcopy.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 33 www.coraldetectionsystem.com 199.34.228.77, 49771, 80 WEEBLYUS United States 18->33 35 www.bgfwa.com 18->35 45 System process connects to network (likely due to code injection or exploit) 18->45 22 NETSTAT.EXE 18->22         started        signatures11 process12 signatures13 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49 51 Tries to detect virtualization through RDTSC time measurements 22->51 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/f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978/
Threat name:
ByteCode-MSIL.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2020-10-12 01:28:53 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6y4oaprtwjgxg3nsq45t33qu3aysomoqicw3smtfxgpcdoklhf4a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
180c1029f70e0bc02acbd67fb8f8628b16dc896b6894fff0c1527247f1adaa85
Formbook
3f8bef60842d6aa5827f315301d8b8b116a0938ed26f9da7eda3db51c104efb4
Formbook
4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43
Formbook
5c0c2689256894521ac0012bc464ad7e0d93c25c60b9df3dfe26b35d85d1713a
Formbook
63d643f5f17f5e621ef22e4c05a5d92c519376d0043c0958284d34ae206c0161
Formbook
82b0bf0df7b8987197d19071dfda32b037ee3251291b08f6d979749635784e89
Formbook
a2c689776ac0293d25b03d0c864f9c5a5314d06da7a126682350939196eb16e6
Formbook
b19d067a87767c377a60981192e5edb9256ce11f7d663cdcae2af3d8d0c0c382
Formbook
b9aac9e8bc1b19d0bdecac73e757f9d3bbcf51f9b5d883f34a3ecad591716582
Formbook
d7d1d6057e7e731b75e1ba9579ccfe717334cc7b4f59324af1a0aa179db22e68
Formbook
+ 2'384 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/201012-nd6py4e59s/
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
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.208ky.com/nl8/
Unpacked files
SH256 hash:
f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978
MD5 hash:
a5da66fd0c48f3d4931c9d7aa4e5bc01
SHA1 hash:
1bae4dd09b2f0a82d4e696fbc4b6208d49ef383e
Link:
https://www.unpac.me/results/883e412a-bfe4-4949-9032-9d8a92b56063/
SH256 hash:
f577580ede657bb48e0bf92fce2452caed372d2f815f733a936beb1cfd968223
MD5 hash:
622edf66f329368c733b8300c4c3db1d
SHA1 hash:
1a45e18b02a4ed3c3ad3a7d3333f2255e803a2a7
Link:
https://www.unpac.me/results/883e412a-bfe4-4949-9032-9d8a92b56063/
SH256 hash:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
Link:
https://www.unpac.me/results/883e412a-bfe4-4949-9032-9d8a92b56063/
SH256 hash:
8b13cd21c6fb12a1cb9e57aba89c3bc8dfafc968a141b1e740433fab655294eb
MD5 hash:
e516efc4307f30ade4c58099085fe46a
SHA1 hash:
5fa7fe7476a8cad37e3c65c9567ff2ac73b59a44
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/883e412a-bfe4-4949-9032-9d8a92b56063/
Parent samples :
180c1029f70e0bc02acbd67fb8f8628b16dc896b6894fff0c1527247f1adaa85
4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43
3f8bef60842d6aa5827f315301d8b8b116a0938ed26f9da7eda3db51c104efb4
b9aac9e8bc1b19d0bdecac73e757f9d3bbcf51f9b5d883f34a3ecad591716582
a2c689776ac0293d25b03d0c864f9c5a5314d06da7a126682350939196eb16e6
f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978
da8c31096f9e2ffc9a1fea4a63d6440cfda55349845300b4f333a02317c73dde
0713f11756d56d7b064989ad057ab768f0cbef644ee45b96f1ef2a9daefd0eaa
8f5161a12c4c8522e00196b39b3ee82c620da9914f8b861d6eee31cb8662d18b
03c78086d04631f011e45da72afc76354452b162c58447b6ee2edc75c15e18dd
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978

File information

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

Malspam

Formbook

arj a3e14d4ff2f007d535c6be2452053b8d1308b7397a3724ee911a34293fce8125

Formbook

Executable exe f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978

(this sample)

  
Dropped by
MD5 9f0bc4f16c0a07271132cfa4f8f8c728
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/69905/
  
Dropped by
SHA256 a3e14d4ff2f007d535c6be2452053b8d1308b7397a3724ee911a34293fce8125

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