MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b
SHA3-384 hash: 941fb04764a3e4bb59a91053cfd592b92bc379ca51a57308fefd7bca3f6912fe5accf6de93f541ac43215ec06d39cdbf
SHA1 hash: 6ca67aab73ad104946349668a41b33c7cf513232
MD5 hash: 556415597943b21364fc346c2cbf9ca0
humanhash: mexico-robin-king-mockingbird
File name:PO 2420208 .pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:740'864 bytes
First seen:2021-02-09 06:19:14 UTC
Last seen:2021-02-09 12:16:59 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:jJXv2UoAKhocId7fl/ZQWYS9vTi4RKY3OkKursNxa:dXv2DozBlhRYurr+kKH
Threatray 3'778 similar samples on MalwareBazaar
TLSH E7F4E53222B4D666E7E91EF48C345D480EB36D0B6615A37BF84471DD28FC923EF11A92
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
106
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO 2420208 .pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-02-09 06:20:16 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/c0d59b87-da25-4db3-a386-2a814f23f7a2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/116272/
Detection(s):
SecuriteInfo.com.generic.ml.15769.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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 the process to change network settings
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/602532
Signature
.NET source code contains potential unpacker
Initial sample is a PE file and has a suspicious name
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 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: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
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 signatures2 2 Behavior Graph ID: 350282 Sample: PO 2420208 .pdf.exe Startdate: 09/02/2021 Architecture: WINDOWS Score: 100 47 Malicious sample detected (through community Yara rule) 2->47 49 Sigma detected: Scheduled temp file as task from temp location 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 12 other signatures 2->53 10 PO 2420208 .pdf.exe 7 2->10         started        process3 file4 33 C:\Users\user\AppData\Roaming\byVtaYWiA.exe, PE32 10->33 dropped 35 C:\Users\...\byVtaYWiA.exe:Zone.Identifier, ASCII 10->35 dropped 37 C:\Users\user\AppData\Local\Temp\tmpCAC.tmp, XML 10->37 dropped 39 C:\Users\user\...\PO 2420208 .pdf.exe.log, ASCII 10->39 dropped 13 PO 2420208 .pdf.exe 10->13         started        16 schtasks.exe 1 10->16         started        18 PO 2420208 .pdf.exe 10->18         started        process5 signatures6 63 Modifies the context of a thread in another process (thread injection) 13->63 65 Maps a DLL or memory area into another process 13->65 67 Sample uses process hollowing technique 13->67 69 Queues an APC in another process (thread injection) 13->69 20 explorer.exe 13->20 injected 24 conhost.exe 16->24         started        process7 dnsIp8 41 featherventure.com 34.102.136.180, 49767, 49770, 49771 GOOGLEUS United States 20->41 43 www.sesliduybeni.com 154.94.66.117, 49766, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 20->43 45 6 other IPs or domains 20->45 55 System process connects to network (likely due to code injection or exploit) 20->55 26 cmd.exe 20->26         started        signatures9 process10 signatures11 57 Modifies the context of a thread in another process (thread injection) 26->57 59 Maps a DLL or memory area into another process 26->59 61 Tries to detect virtualization through RDTSC time measurements 26->61 29 cmd.exe 1 26->29         started        process12 process13 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-09 06:20:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
46
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ojvdfst4segyrzm5furwjxxqq6yaxhegt3zjsjqbnccn55sfpnvq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
18030a9ea4cf60ea858db8b302cdd94962069f232be6212787ad1ddca0bbbe54
Formbook
3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
Formbook
420f06103fac607a08bc7ff557201ffc5fc4f693aa52df9476171ed5398d8bf5
Formbook
48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
Formbook
563bb7942710f08ce409f8418fd0d917877998c978ab0155cb3c1b5eec3b1e7b
Formbook
72c822dc6059af0f57f65a9e52a509e30caefe4225367c3eec186f013134d54f
Formbook
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
Formbook
970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc
Formbook
c8c864915e84ba7ec98eed5ed70893bcb5b328e59751694595a71b303ea587aa
Formbook
f53df4e1f9405d98a02cf34bedf2ee5df88437c130eb339eb6da9850f14ad443
Formbook
+ 3'768 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook ransomware rat spyware stealer trojan
Link:
https://tria.ge/reports/210209-afr67h8jfj/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.brasilseo.com/bft/
Unpacked files
SH256 hash:
d24e66e58c2c85b4f7ed37422e189f85fc64cfdc4acecfca8324c6d0c57eaba7
MD5 hash:
1d3bee0d88895bc916980c8e277e950e
SHA1 hash:
912db89d8fde5a72e286810dfa5177a6f8e202e9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/19bb73f6-f4a2-4211-aaa9-604e5f926ada/
Parent samples :
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
cddf575d340c695e513d03330965f716f8ddf17f5d2fb0929fbb78875653d8b7
72c822dc6059af0f57f65a9e52a509e30caefe4225367c3eec186f013134d54f
48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
c8c864915e84ba7ec98eed5ed70893bcb5b328e59751694595a71b303ea587aa
3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b
cc768b0d5c345d446eacb21922c6561e763015cc6782fdde5a051e1d4fe56acf
2a5b157dc8c983424ebc3a69962649236e17001585de6280cf11f4d94742d28e
2dce266f65b63c927ddf95e71bb0d226eb1c8b260ba8a6965ba1352e9fa837af
SH256 hash:
cd7695e77b8360eb0ed53189152eb0f3b294d6b24a72c0f7ade8f658db90af1c
MD5 hash:
df457072c91c399a5b2e3b19f92ec45d
SHA1 hash:
7f0c278b072afff985aaaef4ee0f312e0540b8cd
Link:
https://www.unpac.me/results/19bb73f6-f4a2-4211-aaa9-604e5f926ada/
SH256 hash:
2b2bcf851c2b87033fd24c890c2a1de3642564f7cec7282982d96b8280baa849
MD5 hash:
befb0470c71d676cc891cba16088975d
SHA1 hash:
5b7143f97d1d656fd1cacf70949048c1951b639a
Link:
https://www.unpac.me/results/19bb73f6-f4a2-4211-aaa9-604e5f926ada/
SH256 hash:
726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b
MD5 hash:
556415597943b21364fc346c2cbf9ca0
SHA1 hash:
6ca67aab73ad104946349668a41b33c7cf513232
Link:
https://www.unpac.me/results/19bb73f6-f4a2-4211-aaa9-604e5f926ada/
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/726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

7z aed4118e181d06fceda4101b210bf9123a2af36d95e60df83163481ccefa392b

Formbook

Executable exe 726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 aed4118e181d06fceda4101b210bf9123a2af36d95e60df83163481ccefa392b
Cape
Cape
https://www.capesandbox.com/analysis/116272/

Comments