MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd
SHA3-384 hash: fe31cb8e815b75fbbf60b7c13b417da3dc6640761571268e6625f16dc999225d6f8fe8dee7e19ca77ce8be61e90fce0f
SHA1 hash: 255eda5bb10ee964c86d70c8e8b4358f207cf6fd
MD5 hash: c5af3ffcbffc142f31dacc040fcc5d35
humanhash: beer-seven-johnny-whiskey
File name:su7KUpCZ70l2fSb.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:516'608 bytes
First seen:2021-10-19 06:59:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:lUQA0GqRipsenpF5jRWkqWaLhpW52NpQ0hD/dR2:eQAmRirKhLhswI09m
Threatray 10'625 similar samples on MalwareBazaar
TLSH T198B4E1143650ED4FC86E4E3A85385C620722A9234707F2836DCB7EDF7E9E7868A19357
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
195
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/198403/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.17696.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/100f4742-5c36-4c45-aac0-0f8ca37c463d
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/872877
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 505305 Sample: su7KUpCZ70l2fSb.exe Startdate: 19/10/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 6 other signatures 2->42 10 su7KUpCZ70l2fSb.exe 3 2->10         started        process3 file4 30 C:\Users\user\...\su7KUpCZ70l2fSb.exe.log, ASCII 10->30 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 14 su7KUpCZ70l2fSb.exe 10->14         started        17 su7KUpCZ70l2fSb.exe 10->17         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.ddassc.icu 154.222.68.155, 49821, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 19->32 34 www.hostingforyou.online 172.67.133.199, 49840, 80 CLOUDFLARENETUS United States 19->34 44 System process connects to network (likely due to code injection or exploit) 19->44 23 cscript.exe 19->23         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 23->46 48 Modifies the context of a thread in another process (thread injection) 23->48 50 Maps a DLL or memory area into another process 23->50 52 Tries to detect virtualization through RDTSC time measurements 23->52 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-10-19 04:57:22 UTC
AV detection:
11 of 45 (24.44%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7r42yivebtogyw5vlaonx7pju4x2wibuxt5rziccbdk62xxa6lgq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2152a980e864940db36cde90c649f66e7c2da15790e97703a28cb378fb7b5ca6
Formbook
4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514
Formbook
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
Formbook
5fd22c8bf1e7e06ccaa6ebc23410086fe0e3bc30b1613cd6ee734f280c0d6979
Formbook
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c
Formbook
972f5e016ffc306524d7083a5a5058ba8b5fc60f3db9f3c0915db59c0523a487
Formbook
9d503fba930fcf9724778a17659948875302b2fc7148c82779c29dfc18fb8cc3
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
f358d592a02990a899bc4ca7c35804529237cbffac5dcabb3e7e3916a79afbb4
Formbook
+ 10'615 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:pn4r rat spyware stealer trojan
Link:
https://tria.ge/reports/211019-hsr7tafda6/
Behaviour
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.wexchange.money/pn4r/
Unpacked files
SH256 hash:
889eace974f67e650585c2fc38f5b6ce8e5e6155c43e4b8d775a1d8786c39d30
MD5 hash:
433b62a1f444bfa06019a6d85a48c914
SHA1 hash:
5f58f62c6eac336924c9d2c3a22cd6bf04822417
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/17b45a21-e258-45d3-af99-49238a6db028/
Parent samples :
fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd
f83cdf1780fcb5525b353125751e8495c5d372d6fbd341b06a60f05ac2de2160
SH256 hash:
7b4ba24781e21b310e2749bc2f7a80b9670a4198a54d26e42079a6a1c1be6ae7
MD5 hash:
7b77d210bf6b00fd8ee8187198852052
SHA1 hash:
7f78d6294a269349fc9a49ad3c8ccb3c3d2665b4
Link:
https://www.unpac.me/results/17b45a21-e258-45d3-af99-49238a6db028/
SH256 hash:
f67ea94460bcb9594c71d131f064da68545c805a55a6aef6fa760de2fd96f6f5
MD5 hash:
6bf369c1a923092245e25cb085f69f06
SHA1 hash:
67ec63640b0b0ed4dc992ad069fd0f01479331d8
Link:
https://www.unpac.me/results/17b45a21-e258-45d3-af99-49238a6db028/
SH256 hash:
fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd
MD5 hash:
c5af3ffcbffc142f31dacc040fcc5d35
SHA1 hash:
255eda5bb10ee964c86d70c8e8b4358f207cf6fd
Link:
https://www.unpac.me/results/17b45a21-e258-45d3-af99-49238a6db028/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd

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: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.

Malspam

Formbook

Executable exe fc79ac22a40cdc6c5bb5581cdbfde9a72fab2034bcfb1ca04208d5ed5ee0f2cd

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/198403/

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