MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43. 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: 4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43
SHA3-384 hash: ab3c1ca59e2dc207b61306702b0ec175ca25ba506339a5731f941ed1d848a3f7dddfb0b31a7ddaa7c931b99e7632ecf9
SHA1 hash: a1e099ca39f43a486cca561e988736fd40a8cd53
MD5 hash: 39265cf3c56c40c255794a65fbf37499
humanhash: mobile-oven-berlin-seven
File name:RFQ..arj.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:722'944 bytes
First seen:2020-10-07 10:46:57 UTC
Last seen:2020-10-07 12:24:31 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:tH26qLQ6FlwmKpY+rQpcvCG3X4o+NswukCv+4pRm0ajNzyds9B+YU22VPHoUVMg:tH2TQasG+rQpcvCSUNXuFrp0NNedsHg
Threatray 2'350 similar samples on MalwareBazaar
TLSH D6F4DF9C7610358FC817CF3699A91C24AA207876572BD20BA41736AD9F2F6D7CF112B2
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: serve0.postalshipment.info
Sending IP: 192.119.92.221
From: Lena Al Yousaif <postalshipment.info>
Reply-To: ongsuknadi@gmail.com
Subject: Request For Quotation
Attachment: RFQ..arj (contains "RFQ..arj.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/68893/
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
Setting browser functions hooks
Forced shutdown of a system process
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/484010
Signature
Binary contains a suspicious time stamp
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
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
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 294454 Sample: RFQ..arj.exe Startdate: 07/10/2020 Architecture: WINDOWS Score: 100 31 www.stac.tools 2->31 33 parkingpage.namecheap.com 2->33 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected AntiVM_3 2->45 47 5 other signatures 2->47 11 RFQ..arj.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\RFQ..arj.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 RFQ..arj.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 35 patternbyetsy.com 130.211.40.170, 49758, 80 GOOGLEUS United States 18->35 37 www.208ky.com 208.91.197.91, 49755, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 18->37 39 www.verticalsmilegloss.com 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 WWAHost.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 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/4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2020-10-07 09:21:04 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkz3uj4nvtjbrjbqrkqaoqifkrvfejloaknctvt7qki7vtzf7vbq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
10a9aab39489aa507d35bb18b357ca6c9f8642d8fa27fc1ad9c7de03c8e9415d
Formbook
180c1029f70e0bc02acbd67fb8f8628b16dc896b6894fff0c1527247f1adaa85
Formbook
5c0c2689256894521ac0012bc464ad7e0d93c25c60b9df3dfe26b35d85d1713a
Formbook
63d643f5f17f5e621ef22e4c05a5d92c519376d0043c0958284d34ae206c0161
Formbook
82f4ebd30b18743d8cc409de5931a978434755705af9bbfa3c6d8d0b34d30a6b
Formbook
89bf15eae14f60d6acc308cead31f09459947626b9839bbbddbf76f00821fe3b
Formbook
9107a8988792e1ec695a1d662a6b0f7668a6fbfb6352897c1f5bfe85addf2994
Formbook
c6232f818d7c848dee9a6a653df75e0174e38362ff2e5f6040c5e7418af5f219
Formbook
c65fe5438e02a697fa15a0c17e76885ffb3a22eb92d47359f0519196d8b9c104
Formbook
d7d1d6057e7e731b75e1ba9579ccfe717334cc7b4f59324af1a0aa179db22e68
Formbook
+ 2'340 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/201007-fazcqm9hde/
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:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
Link:
https://www.unpac.me/results/6ed160e3-5e9f-4d76-b262-45017f720caf/
SH256 hash:
5853062fcd382308faf605a4ee2b2dfd8a1ff3b712704d83762fb10eef65b339
MD5 hash:
7aadbc9d9254a681b2d7d0b65df32a72
SHA1 hash:
ff54f331a4d1e11f8f4e667d49a1f55cfcdb8723
Link:
https://www.unpac.me/results/6ed160e3-5e9f-4d76-b262-45017f720caf/
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/6ed160e3-5e9f-4d76-b262-45017f720caf/
Parent samples :
180c1029f70e0bc02acbd67fb8f8628b16dc896b6894fff0c1527247f1adaa85
4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43
3f8bef60842d6aa5827f315301d8b8b116a0938ed26f9da7eda3db51c104efb4
b9aac9e8bc1b19d0bdecac73e757f9d3bbcf51f9b5d883f34a3ecad591716582
a2c689776ac0293d25b03d0c864f9c5a5314d06da7a126682350939196eb16e6
f638e03e33b24d736db2873b3dee14d8312731d040adb93265b99e21b94b3978
da8c31096f9e2ffc9a1fea4a63d6440cfda55349845300b4f333a02317c73dde
0713f11756d56d7b064989ad057ab768f0cbef644ee45b96f1ef2a9daefd0eaa
8f5161a12c4c8522e00196b39b3ee82c620da9914f8b861d6eee31cb8662d18b
03c78086d04631f011e45da72afc76354452b162c58447b6ee2edc75c15e18dd
SH256 hash:
4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43
MD5 hash:
39265cf3c56c40c255794a65fbf37499
SHA1 hash:
a1e099ca39f43a486cca561e988736fd40a8cd53
Link:
https://www.unpac.me/results/6ed160e3-5e9f-4d76-b262-45017f720caf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43

File information

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

Malspam

Formbook

arj 5f9e6aa84a6f54195f78cda6a39fa08106dd45b89480fe5d95a9632056e199d2

Formbook

Executable exe 4ab3ba278dacd218a4308aa0074105546a52256e029a29d67f8291facf25fd43

(this sample)

  
Dropped by
MD5 f2a2ce55869a70c92a4f3d02100e6ddb
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/68893/
  
Dropped by
SHA256 5f9e6aa84a6f54195f78cda6a39fa08106dd45b89480fe5d95a9632056e199d2

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