MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d
SHA3-384 hash: c37b4a219b07c84ec0e867d6aedc37fba410d2c7f0132d8e33a03529ba8cbc657e5f4fd9b2928aa02fc62675bcf5779b
SHA1 hash: 0c80c337d4b3c26c60bd29982f6d675c5d07b1b6
MD5 hash: efb141aec2d670561f84cec2b1bdad9d
humanhash: avocado-batman-xray-pasta
File name:efb141aec2d670561f84cec2b1bdad9d.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:232'960 bytes
First seen:2022-05-09 14:37:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:bRSGM7FO/Tl+oyCRNrbMpaWzF5UXV+bluH:bm7UrlNRVMpaWzF5UX8bu
Threatray 109 similar samples on MalwareBazaar
TLSH T1E4348EABAF9C01AAECF45CB409539E7007B74D38CCD8570398DD362E8FBBA855032596
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon cc9ab29accc4f030 (1 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DHL INVOICES APRIL.xlsx
Verdict:
Malicious activity
Analysis date:
2022-05-09 09:53:20 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/dd7f35af-c90e-4bfb-8292-e540bcd0a2c9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.27065.19221.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6279275fbe0219041a888c94/reports/7087dec3-f3b8-4ced-a38d-a3b89479789a/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/9c0baece-928f-449a-9524-b7e0fa46401d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/990337
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for dropped file
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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 622833 Sample: 2Nka6a2qGm.exe Startdate: 09/05/2022 Architecture: WINDOWS Score: 100 40 www.albanyskylights.com 2->40 42 traff-3.hugedomains.com 2->42 44 hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com 2->44 56 Snort IDS alert for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 9 other signatures 2->62 11 2Nka6a2qGm.exe 15 7 2->11         started        signatures3 process4 dnsIp5 46 rds-co.ga 192.185.174.178, 49732, 80 UNIFIEDLAYER-AS-1US United States 11->46 34 C:\Users\user\AppData\Roaming\...\Jwfsiuo.exe, PE32 11->34 dropped 36 C:\Users\user\...\Jwfsiuo.exe:Zone.Identifier, ASCII 11->36 dropped 38 C:\Users\user\AppData\...\2Nka6a2qGm.exe.log, ASCII 11->38 dropped 70 Creates an undocumented autostart registry key 11->70 72 Writes to foreign memory regions 11->72 74 Injects a PE file into a foreign processes 11->74 16 MSBuild.exe 11->16         started        19 cmd.exe 1 11->19         started        file6 signatures7 process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 16->48 50 Maps a DLL or memory area into another process 16->50 52 Sample uses process hollowing technique 16->52 54 2 other signatures 16->54 21 explorer.exe 16->21 injected 23 conhost.exe 19->23         started        25 timeout.exe 1 19->25         started        process10 process11 27 WWAHost.exe 21->27         started        signatures12 64 Modifies the context of a thread in another process (thread injection) 27->64 66 Maps a DLL or memory area into another process 27->66 68 Tries to detect virtualization through RDTSC time measurements 27->68 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-09 12:14:58 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6n4v5bby26bthvwemnudpqbd373zv3o3xdmycqd35spvxiw4rugq._file
Verdict:
malicious
Similar samples:
15e7344a0c408dd0b37b2fb22bc56b2fd3d1d723f6dfb70cbf1aaff61de98624
Formbook
1a443f4faa6f4187f8b4e90743b30c48bd33fe18602238a992316036d779f4f8
Formbook
4f7d1f1df60c29fe9eff2e75f317a316c9ddc9afe569624a466670cf396b8d61
Formbook
57a8a0d5da162faec3142018c0f37be3a9d548330968519f15da92f372653185
Formbook
6733107e98bb5962dd843ee407aaab8614487e6f56a5d23d47b00025bb3c253f
Formbook
8c585cd63fab6a0ccbc7bd9e5b5532a093248ce1cb893b8a7e825d8720fc1eb9
Formbook
d4d1c3d345c6c7e12ad33daee3b333c965e89682987e109f8dcab813f0fff64a
Formbook
+ 99 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220509-rzpvpsdeg4/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d
MD5 hash:
efb141aec2d670561f84cec2b1bdad9d
SHA1 hash:
0c80c337d4b3c26c60bd29982f6d675c5d07b1b6
Link:
https://www.unpac.me/results/851deabb-d430-482c-b85b-1c5ab7d40a99/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d

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.

Web download

Formbook

Executable exe f3795e8438d78333d6c4636837c023dff79aeddbb8d981407bec9f5ba2dc8d0d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2186133/
  
Delivery method
Distributed via web download

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