MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06
SHA3-384 hash: ccc54ff73ede30ce07c66620a0249a4a3cc631682eb1d44e96a2f3b4179174720066300cc2bfd3657afcb7e4c019302f
SHA1 hash: 7b0b7a371332877f8d137aac956caf46a6fc5852
MD5 hash: 71bec3e70cf7b3779d29f4f488e79b77
humanhash: missouri-steak-texas-happy
File name:157780.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:555'008 bytes
First seen:2020-08-13 09:18:21 UTC
Last seen:2020-08-13 10:26:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 6144:CJxJEJE/qo8Bf05v0Pug7D9ltQn+h6nZoIR8kK3bL/nVlR7qUmA4+:s0J6OcpFoD9ltQn+goImk+fN9mAv
Threatray 2'317 similar samples on MalwareBazaar
TLSH EAC408F6744F8112C4AA3DB0CC26DA856F3C6B10F502522DF69A23783DE677A37055EA
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: dedivps-57824.dedicloud.co.uk
Sending IP: 149.255.56.120
From: Sheyda Razizadeh (Ms.) <n.akramian@atlas-group.co>
Subject: INQ 157780
Attachment: 157780.XLS

Formbook payload URL:
http://13.234.238.111/gh/157780.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
76
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/45008/
Detection(s):
SecuriteInfo.com.Formbook.19106.26626.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a file
Running batch commands
Launching a process
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
66 / 100
Link:
https://www.joesandbox.com/analysis/425628
Signature
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Injects a PE file into a foreign processes
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)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 265378 Sample: 157780.exe Startdate: 14/08/2020 Architecture: WINDOWS Score: 66 39 Malicious sample detected (through community Yara rule) 2->39 41 Yara detected FormBook 2->41 9 157780.exe 9 2->9         started        13 pcalua.exe 1 1 2->13         started        process3 file4 31 C:\Users\user\AppData\Local\smgjy.exe, PE32 9->31 dropped 33 C:\Users\user\AppData\...\InstallUtil.exe, PE32 9->33 dropped 35 C:\Users\user\...\smgjy.exe:Zone.Identifier, ASCII 9->35 dropped 37 C:\Users\user\AppData\Local\Temp\...\l.dll, PE32 9->37 dropped 53 Tries to detect virtualization through RDTSC time measurements 9->53 15 smgjy.exe 3 9->15         started        18 cmd.exe 1 9->18         started        signatures5 process6 signatures7 55 Writes to foreign memory regions 15->55 57 Allocates memory in foreign processes 15->57 59 Tries to detect virtualization through RDTSC time measurements 15->59 61 Injects a PE file into a foreign processes 15->61 20 InstallUtil.exe 15->20         started        23 reg.exe 1 1 18->23         started        25 conhost.exe 18->25         started        process8 signatures9 43 Modifies the context of a thread in another process (thread injection) 20->43 45 Maps a DLL or memory area into another process 20->45 47 Tries to detect virtualization through RDTSC time measurements 20->47 49 Queues an APC in another process (thread injection) 20->49 27 explorer.exe 20->27 injected 51 Creates an autostart registry key pointing to binary in C:\Windows 23->51 process10 process11 29 explorer.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06/
Threat name:
ByteCode-MSIL.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 09:20:07 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=si4qt6sb4iowrw6bcrb74mopthjhsiauoz7co3ozvjzitj4k7ida._file
Verdict:
malicious
Similar samples:
0e7ba6c8acc0e3de5a31e050eb287daba683c992e12c4715730ef3ccf3bbf575
Formbook
0f73e9d58b85ae9061722f0720ab2f76f9884042b9ac260e5c102564d4572004
Formbook
5422893799866f5a8f2137ae3261caf86479e948715935a096800888f1a5ae88
Formbook
5dd54174543f8e681162c6c8462209da761db5e2ccb38cb8408ef0232956b3ce
Formbook
62afb1cbcacb77aa2ca99cc55c0e3536738415289f53c4a3a57d9b9cc08ee5ab
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777d646e09cf725986f3617d40d5bca943d077015759e346e3e8f5314cac13ce
Formbook
885179565290381c8e8e883f1e4c776507c1ddd3bfa8902f432ea31fbf01c683
Formbook
b1c87bb82c46e28ccb5188475def1c24b3239f0508372163cd75d2abc6eaf049
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c12ceb5bc795285eff54b3ef08c9208c67148b5c446e21084677c25bf8c56112
Formbook
fc8190f268303e801544fcbeee6d21ac32a72779103cec2e31a9f5963d5a0c55
Formbook
+ 2'307 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
agilenet rat trojan spyware stealer family:formbook persistence
Link:
https://tria.ge/reports/200813-zpmxpb2ek2/
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
Adds Run key to start application
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.magentos2.info/oqkb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research

File information

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

Malspam

Formbook

Excel file xls 93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642

Formbook

Executable exe 923909fa41e21d68dbc11443fe31cf99d2792014767e276dd9aa7289a78afa06

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/431709/
  
Dropped by
MD5 daea44be59abc7fb93789c9ec9535bdf
  
Dropped by
SHA256 93727c5cfbe727e43f0644f888fddb03c4f5728f82c74952981691f09de44642
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/45008/

Comments