MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: 9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd
SHA3-384 hash: 4d15cacfb003ebca81150acb1c4177add7a12d9ea02b29ca9e30e97724ee4cc014799b3b9b5233e09d70a3278460e04f
SHA1 hash: 561d7d2af83b8c0c03d1f6f07b0407b6eae4ade5
MD5 hash: 881c93fcdfa9139ffa3fa0d4c14dd1a0
humanhash: violet-red-august-quiet
File name:0628222 _TOP.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:276'504 bytes
First seen:2022-06-28 08:18:06 UTC
Last seen:2022-06-28 08:39:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:q3FME8qXZy265aqZyrvufPg/jy+8T9ob7EQeu6g0L+sFl:qOC82fqZyrGfxTCcFg0L7Fl
TLSH T1D744E12E37860E10DA9C99B190DB892833B1E3477733D34B399851854F43BE6DDAA7C9
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
248
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/283812/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/62bab97c03fa367ea58436c5/reports/f120eb7d-ca19-431d-941f-57ff6044df35/overview
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3da2daf8-6a4a-41bc-a455-6e2f56a62a4c
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1021000
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 653492 Sample: 0628222 _TOP.exe Startdate: 28/06/2022 Architecture: WINDOWS Score: 100 31 www.momentums6.com 2->31 39 Snort IDS alert for network traffic 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 7 other signatures 2->45 11 0628222 _TOP.exe 1 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\0628222 _TOP.exe.log, ASCII 11->29 dropped 55 Writes to foreign memory regions 11->55 57 Allocates memory in foreign processes 11->57 59 Injects a PE file into a foreign processes 11->59 15 cvtres.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 2 other signatures 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.kreditkarten-optionde.com 185.53.179.94, 49774, 80 TEAMINTERNET-ASDE Germany 18->33 35 www.oneruk-chandeliercleaning.com 119.59.104.13, 49775, 80 METRABYTE-TH453LadplacoutJorakhaebuaTH Thailand 18->35 37 12 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 cmstp.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-06-28 06:37:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=szqlc44hxshg4n77zviafnkqbkbasp5bx3hk3rjjtgolo744gl6q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:tn61 loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220628-j7t6dsgban/
Behaviour
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
c255e016dab3d29f31f8ab97b4a51e424267fd456a7a7b1fad5610b4c2b97fc0
MD5 hash:
dc42037bc83489ba6ac2513a184590c3
SHA1 hash:
26e3e9e7a3d125b7c9926a11ffcf61b8f4d5f405
Detections:
win_formbook_g0
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win_formbook_auto
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XLoader
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Link:
https://www.unpac.me/results/6983c2dc-5d34-4c70-a886-c4440abf1c74/
Parent samples :
eebc2ceadb7e9541112a27a583603fd284208f1e2d23329c726efcfc02244609
67df49c1f0f94c41c91df4cb71835b1e188d19a19b5eb1346f1e0da4444d13d0
ce757f9bd6a6ba9c9b7b27d3923b1dfca6e82b6a955fdf92c91975db6b1abdfb
944e7fd3dd8566847a5a2e8a3cb454330759a0c47df08ff4f2a40d7f50374c5f
00468491177bab4d715685cc174538ff0a3c15cdf0b679c7d163b89e3b8d2421
0ab8978869103e7594108e31a46cb1c7e62cb47ad44ab930fc17ccc2fb57daea
7ffd8a13ecf1f8cb62fe0dc158fd9cfcdd9a871610970ac6f824e913f5586ee5
6959e78db6f5ebf3c0c86c05868e281a3013cdfcc3a57440ec8a24ab43506af8
2fad61e5630cde696d8ea57db27d521ed4ff87ae0c5e692c597171439ae6d01c
46a2db9a230702587a6b3f74db164fc360707b6ed103cbe88f35d52208384c26
9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd
6187ecd59d9d6c50c32460769a8a16ad8e1051a4c2e12899b2912861be1e823d
4410e6f9469bbb3a9174dedf18c52e070ae7b6480b6f8e88c29c43996f2674d6
8054dd2e45880794d187893bf7274cb69cc628baa62eec2a2dfb514af50c37c4
17bb531735f33a166212965ab1e2db2157c2c0835fb5ff1c40e7da7c10c92971
c005d98eb3a32962f937a87c96ee4f656e9f62d83afdf47b803391071800b292
4c61906e1b2ad899fb297c820fbf23a556cb2ab5785ba916ffdc7438c2c0414f
e25ea6eb167727e93ddf4162cdf8fd9f8b974c6ae6195d743b578cadcc17301a
d50d36d60b72642c6470efa03def6f91d7fef78790ac1215416659dd5bbca94e
SH256 hash:
9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd
MD5 hash:
881c93fcdfa9139ffa3fa0d4c14dd1a0
SHA1 hash:
561d7d2af83b8c0c03d1f6f07b0407b6eae4ade5
Link:
https://www.unpac.me/results/6983c2dc-5d34-4c70-a886-c4440abf1c74/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9660b17387bc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd

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
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Rule name:Skystars_Malware_Imphash
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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 9660b17387bc8e6e37ffcd5002b5500a82093fa1beceadc529999cb77f9c32fd

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283812/

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