MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 73a8ac37a0f0c6761800a276b77b0fd34d1cf43830f822ef18ff50dbda934751. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 73a8ac37a0f0c6761800a276b77b0fd34d1cf43830f822ef18ff50dbda934751
SHA3-384 hash: fcd81a21738b2d1d1f376d3abc8a0a0355b95b6fbc37d53bc126e7cac28354e05cb7dec3651f3aa8e4c14b2ab8caaec8
SHA1 hash: 50beebd33a8b68602632e1ec065cc6e3b70b40ea
MD5 hash: 1a278a89f8176f9d38a04f4e58a8c072
humanhash: nuts-tennis-neptune-diet
File name:PO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'490'880 bytes
First seen:2020-11-20 07:38:47 UTC
Last seen:2020-11-27 09:58:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:GDJXK2pQMdCIUPf20glUlSFDHucLADt25NcJ60f4fj:E6HtX2NpucA+
Threatray 3'029 similar samples on MalwareBazaar
TLSH 63B56B543C43345F7A9E11B01ADB56E8A2E63118057127398CAF69BCDA1E17B3CEF872
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: gmail.com
Sending IP: 156.96.62.91
From: Entang Hoerudin (Pur-Polymer) <sales@gmail.com>
Reply-To: fortunatodaniel.johndeere@gmail.com
Subject: Re: Fwd: Fwd: Fwd: Fwd: RFQ # 23692 ANRITSU PROBE/ po # 29288
Attachment: PO.zip (contains "PO.exe")

Intelligence

File Origin
# of uploads :
23
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Verdict:
UNKNOWN
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/543978
Signature
Antivirus / Scanner detection for submitted sample
Hides threads from debuggers
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
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 321086 Sample: PO.exe Startdate: 20/11/2020 Architecture: WINDOWS Score: 100 35 www.flexultralounge.com 2->35 37 blooming-guava-cawr4blrtfppsz67r0r2wz0v.herokudns.com 2->37 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 4 other signatures 2->47 11 PO.exe 2 2->11         started        signatures3 process4 signatures5 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Hides threads from debuggers 11->57 14 PO.exe 11->14         started        17 WerFault.exe 24 9 11->17         started        process6 dnsIp7 59 Modifies the context of a thread in another process (thread injection) 14->59 61 Maps a DLL or memory area into another process 14->61 63 Sample uses process hollowing technique 14->63 65 Queues an APC in another process (thread injection) 14->65 21 explorer.exe 14->21 injected 33 192.168.2.1 unknown unknown 17->33 31 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 17->31 dropped file8 signatures9 process10 dnsIp11 39 www.novavitarealty.com 21->39 24 netsh.exe 21->24         started        process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 24->49 51 Maps a DLL or memory area into another process 24->51 53 Tries to detect virtualization through RDTSC time measurements 24->53 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/73a8ac37a0f0c6761800a276b77b0fd34d1cf43830f822ef18ff50dbda934751/
Threat name:
ByteCode-MSIL.Trojan.OutBreak
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 23:51:58 UTC
AV detection:
26 of 28 (92.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ooukyn5a6ddhmgaauj3lo6yp2ngrz5bygd4cf3yy75inxwuti5iq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0444972f4976d21a707c947f936ee857584f0dee44e795c6dc7cb86d9b28eddd
Formbook
0492389f51ea478d6b922d2e41b7f8bf54c7231ed062bae93b8ede289926db7f
Formbook
52f5f69cea97498f63733e3ea43b67e840177c68d4370531a008c6e7f4fc9abb
Formbook
5d23faa05258eb51b196fee00263dc5e4556a37301d312563843a7ac8494ee19
Formbook
8df5752017d7f083ddad62b8423ea7109c830dbcdca3fff0ee7aee8d149fdeda
Formbook
911fec402f3bb42d731c4e177c322c0df8d79f680e5a18f538a3ff2e3086c2bf
Formbook
bea5a2a0bade8802b63d59a653b7140792acdfa1fd3f92ccafe9bb592a94882d
Formbook
c5bfbac52396976e672116e5fb07d6cae05d2b07b749d08283a26bcf29677dbe
Formbook
cacdf1a59d452cff7cd9278e6aed55047b7867c740b858e41f36538f8ffd2a89
Formbook
e85f434810652692f3e0a0738d9156899afcbd2bed42a6f328f0092d72a1db34
Formbook
+ 3'019 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201120-c2fte83e8e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.goldenoilproducts.com/9d1o/
Unpacked files
SH256 hash:
73a8ac37a0f0c6761800a276b77b0fd34d1cf43830f822ef18ff50dbda934751
MD5 hash:
1a278a89f8176f9d38a04f4e58a8c072
SHA1 hash:
50beebd33a8b68602632e1ec065cc6e3b70b40ea
Link:
https://www.unpac.me/results/0665b6f5-cc4a-47eb-9361-9073fad24851/
SH256 hash:
1f6970438f30be6efa13604a4ed7670456e357db32352e9ab85ed388a0831f55
MD5 hash:
196ff9842db5b47c06ffe1fb4b397f42
SHA1 hash:
d7580937d081d8360a744489f85d15959cc15bd0
Link:
https://www.unpac.me/results/0665b6f5-cc4a-47eb-9361-9073fad24851/
SH256 hash:
b17bdd27b1b5d0f1e563c433992f275168230cfc62ddebcf0cec1af804ca6088
MD5 hash:
c89ec366d7bb76ef8297bfdb694e293f
SHA1 hash:
4b2d1d3620214ddf66c235f407560c4846d926e4
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0665b6f5-cc4a-47eb-9361-9073fad24851/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

Formbook

zip 81296b9f87ea7b7b4dbc65cdd487b4fcd1934c7763e257fff14fc3312cad0b07

Formbook

Executable exe 73a8ac37a0f0c6761800a276b77b0fd34d1cf43830f822ef18ff50dbda934751

(this sample)

  
Dropped by
MD5 693a144a1b0d2ed30f63367cb4542c36
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 81296b9f87ea7b7b4dbc65cdd487b4fcd1934c7763e257fff14fc3312cad0b07

Comments