MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: 343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d
SHA3-384 hash: b7eddf2973da0cc01a9c71eb7060723e24fc68883402714f01910cf00adb8c0e83ee0c131a353e9129169524cc670608
SHA1 hash: 94d6fefc869506a64b0605138d480cd7110adbd0
MD5 hash: 9c33c1addec20d73d3aed96375b56ee9
humanhash: minnesota-stream-nuts-mike
File name:Purchase_Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:851'968 bytes
First seen:2022-04-08 15:06:05 UTC
Last seen:2022-04-11 06:59:52 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:BwJrxkAchAc56+IEjl5++6+o5hzF5L++dTnBSGhUb24/jsGmFLLcsFU4HYa96V:B83BpgjHG+o5hXRpnBvUKWcB95+
TLSH T19D05F1553BA5F096D38027319CD2DAB47EA4ECC51E1AB7887422BE6C3FB1164F840BD9
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Purchase_Order.exe
Verdict:
Malicious activity
Analysis date:
2022-04-08 18:11:34 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/f9dad807-9b00-4d9f-a416-4316c8e4b816

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/262177/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62504f97d53a7479dadcd2b0/reports/d47aa6f5-29c8-4d04-b737-17dd62ed65ff/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6ed66f08-8abf-4198-9247-c4a3a5829cf8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/973289
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 605773 Sample: Purchase_Order.exe Startdate: 08/04/2022 Architecture: WINDOWS Score: 100 31 www.rockscleaningservices.com 2->31 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 8 other signatures 2->39 11 Purchase_Order.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Purchase_Order.exe.log, ASCII 11->29 dropped 49 Tries to detect virtualization through RDTSC time measurements 11->49 51 Injects a PE file into a foreign processes 11->51 15 Purchase_Order.exe 11->15         started        signatures6 process7 signatures8 53 Modifies the context of a thread in another process (thread injection) 15->53 55 Maps a DLL or memory area into another process 15->55 57 Sample uses process hollowing technique 15->57 59 Queues an APC in another process (thread injection) 15->59 18 explorer.exe 3 158 15->18         started        20 explorer.exe 15->20 injected process9 process10 22 systray.exe 18->22         started        signatures11 41 Self deletion via cmd delete 22->41 43 Modifies the context of a thread in another process (thread injection) 22->43 45 Maps a DLL or memory area into another process 22->45 47 Tries to detect virtualization through RDTSC time measurements 22->47 25 cmd.exe 1 22->25         started        process12 process13 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-08 15:07:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
17 of 41 (41.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gq5uwbpn2q54rwdafdoseadh3wm5inlits4blajnfw3xq5iwnngq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ioxf loader rat suricata
Link:
https://tria.ge/reports/220408-shaj5abael/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
ad53acae071367ed26937b96492c12c2a9f78390eab755a424431b516908a634
MD5 hash:
7a7a0f11b730ba5f5ee0fcfb39f37236
SHA1 hash:
a1709817e2f25f48dafbe63ae1cae130e69e2d1d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/089ee9a0-cfce-4130-8c28-ca6388d791d0/
Parent samples :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 hash:
5d0d52901be6f4310c07e137182bcbdf32138cfeac11835ad6ef42499321d3f4
MD5 hash:
7675c3c7f88067afebeabfa894069626
SHA1 hash:
e133a2188421c142d7a13ba43821bfc9c47ca8b5
Link:
https://www.unpac.me/results/089ee9a0-cfce-4130-8c28-ca6388d791d0/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/089ee9a0-cfce-4130-8c28-ca6388d791d0/
SH256 hash:
343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d
MD5 hash:
9c33c1addec20d73d3aed96375b56ee9
SHA1 hash:
94d6fefc869506a64b0605138d480cd7110adbd0
Link:
https://www.unpac.me/results/089ee9a0-cfce-4130-8c28-ca6388d791d0/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 343b4b05edd43bc8d86028dd220067dd99d435689cb815812d2db77875166b4d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/262177/

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