MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b
SHA3-384 hash: 2115a1f77b73cfba1e700d832cbd4b56ae7bb9767f790cc7626d9621d37fd218250899d6d98de2d0a70bd3c722ea0c8a
SHA1 hash: b84333f7670b22d112e74a0f08fd151a58f3df74
MD5 hash: 72387dcab29d95d40b4a8f3b855cbdc7
humanhash: king-orange-saturn-neptune
File name:72387dcab29d95d40b4a8f3b855cbdc7.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:867'328 bytes
First seen:2021-03-26 15:08:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:nAHnh+eWsN3skA4RV1Hom2KXMmHamXy5:ah+ZkldoPK8Yam4
Threatray 4'347 similar samples on MalwareBazaar
TLSH BE058B0273D1C036FFABA2739B6AF64156BC79254133852F13981DB9BD701B2263E663
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
131
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
po201.doc
Verdict:
Malicious activity
Analysis date:
2021-03-26 09:20:18 UTC
Tags:
ole-embedded exploit CVE-2017-11882 trojan formbook stealer
Link:
https://app.any.run/tasks/a10aea00-00a5-4168-a416-204d93c7108b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/127038/
Detection(s):
SecuriteInfo.com.AIT.Trojan.Nymeria.1583.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Creating a file
Creating a file in the %AppData% directory
Sending a UDP request
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Launching cmd.exe command interpreter
Deleting a recently created file
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c451e5a3-418f-4d5c-8f25-7c36e9b2cef4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/655739
Signature
Binary is likely a compiled AutoIt script file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Found malware configuration
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)
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
Very long command line found
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 376802 Sample: fXXC1Q2nRt.exe Startdate: 27/03/2021 Architecture: WINDOWS Score: 100 43 www.hiwimag.com 2->43 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 5 other signatures 2->65 13 fXXC1Q2nRt.exe 15 2->13         started        signatures3 process4 dnsIp5 49 paste.ee 172.67.68.88, 443, 49704 CLOUDFLARENETUS United States 13->49 41 C:\Users\user\AppData\Roaming\FwBRtfIZn.ps1, ASCII 13->41 dropped 79 Binary is likely a compiled AutoIt script file 13->79 81 Bypasses PowerShell execution policy 13->81 18 powershell.exe 26 13->18         started        file6 signatures7 process8 signatures9 57 Very long command line found 18->57 21 powershell.exe 15 14 18->21         started        25 conhost.exe 18->25         started        process10 dnsIp11 45 104.26.4.223, 443, 49720 CLOUDFLARENETUS United States 21->45 47 paste.ee 21->47 67 Writes to foreign memory regions 21->67 69 Injects a PE file into a foreign processes 21->69 27 MSBuild.exe 21->27         started        signatures12 process13 signatures14 71 Modifies the context of a thread in another process (thread injection) 27->71 73 Maps a DLL or memory area into another process 27->73 75 Sample uses process hollowing technique 27->75 77 2 other signatures 27->77 30 explorer.exe 27->30 injected process15 process16 32 help.exe 30->32         started        35 autofmt.exe 30->35         started        signatures17 51 Modifies the context of a thread in another process (thread injection) 32->51 53 Maps a DLL or memory area into another process 32->53 55 Tries to detect virtualization through RDTSC time measurements 32->55 37 cmd.exe 32->37         started        process18 process19 39 conhost.exe 37->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b/
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-03-26 11:35:36 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uti2azzbyoyzgl2oo2slji4dqll2a7cexnlteujidd7rkuudtafq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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41c87199c61ff26a9f486e5bc9b6bfd010b4c112922bad655599f9a06e2c0ffc
Formbook
56368dfb68347ec22ba4d8d1d16e1acc9dbf37acf30803ef92f75f27f0a6a6a5
Formbook
5d5d64a87a5d888443e8d7a25046922fa4a39fe5952a45635dd66321e616bb14
Formbook
728f4462fb60eaaf040fae6f8993c8f64139715f97d3c16db43932b447709426
Formbook
850ba9cb8e16d04b40e1499ea65f614d760af29ed7f0892f99e10c88e1f80c68
Formbook
c1a40dbca9d28ac760447f501d812b82312be281ee699fdcc4a6a543077caa3d
Formbook
d0b2bc00645de803a4e9df303539995ee8f781631684b04fe67ee7e01bcf9c21
Formbook
e68f17cfe87742103150ca9abd6cc16581caa6e0e0243d03fae2c89c2609c974
Formbook
f09416ef7aaab2c43c62ef77bb69c005ec4a57d4051586f5e7d8571e74fee41c
Formbook
f130539b2d2324246449abb99f5a0effb214feee629b092d48ac63aca14e2ba6
Formbook
+ 4'337 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/210326-st4xezcdzx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Drops file in System32 directory
Suspicious use of SetThreadContext
Blocklisted process makes network request
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.organichighqualityrush.com/kfn/
Dropper Extraction:
httPs://paste.ee/r/PUrI0
httPs://paste.ee/r/A39Ev
Unpacked files
SH256 hash:
a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b
MD5 hash:
72387dcab29d95d40b4a8f3b855cbdc7
SHA1 hash:
b84333f7670b22d112e74a0f08fd151a58f3df74
Link:
https://www.unpac.me/results/bf2f9695-c8b1-4e15-b8d0-6e9f3a96d5c1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Web download

Formbook

Executable exe a4d1a06721c3b1932f4e76a4b4a38382d7a07c44bb5732512818ff155283980b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1092769/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/127038/

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