MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8dad8694366562f6e92484ba1a56852b59a9f71578d0c995e0e2001303ecaba4. 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 3 File information Comments
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SHA256 hash: 8dad8694366562f6e92484ba1a56852b59a9f71578d0c995e0e2001303ecaba4
SHA3-384 hash: 0432875f995c2ae43bff54f736e48bb6bde977a862714345c299e2ac7e6fc1ee0aeada6384f39875eeeef7faf07b70ed
SHA1 hash: 5af183d8f2f0e8f43c0381abac5e455be76c8022
MD5 hash: 80129d6b2e2a86324bb0e434abed6003
humanhash: william-bakerloo-undress-washington
File name:c728Z4M1h95KvyG.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:975'360 bytes
First seen:2021-12-13 11:54:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:XA9H6lt8LJDCKcfoJPvVSjhC6OytNyeWbUragf57Q6A/Cxav:w9HwADCKbSjhqCNVWbUr5GD/Gav
Threatray 13'321 similar samples on MalwareBazaar
TLSH T1E625239631D81F7AE87287F898A54E0183FAF9253922E74C5CD170EB6E247C02B517CB
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c728Z4M1h95KvyG.exe
Verdict:
Malicious activity
Analysis date:
2021-12-13 11:55:07 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/06b38b72-3175-4bb2-8dca-03f7d7ef9b7b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/213532/
Detection(s):
PUA.Win.Packer.Medvedev-6482674-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61b73460d949b30459f3c2c7/reports/9de13ea9-7733-4ab2-a9b3-92751b64b259/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6cb3fc70-06bf-48ed-928f-d218cfec8d40
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/906253
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 dnsIp2 2 Behavior Graph ID: 538731 Sample: c728Z4M1h95KvyG.exe Startdate: 13/12/2021 Architecture: WINDOWS Score: 100 30 www.alvarezdelugo.store 2->30 32 Found malware configuration 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Yara detected AntiVM3 2->36 38 4 other signatures 2->38 11 c728Z4M1h95KvyG.exe 3 2->11         started        signatures3 process4 signatures5 48 Tries to detect virtualization through RDTSC time measurements 11->48 50 Injects a PE file into a foreign processes 11->50 14 c728Z4M1h95KvyG.exe 11->14         started        process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 Queues an APC in another process (thread injection) 14->58 17 explorer.exe 14->17 injected process8 process9 19 wlanext.exe 17->19         started        22 autofmt.exe 17->22         started        signatures10 40 Self deletion via cmd delete 19->40 42 Modifies the context of a thread in another process (thread injection) 19->42 44 Maps a DLL or memory area into another process 19->44 46 Tries to detect virtualization through RDTSC time measurements 19->46 24 cmd.exe 1 19->24         started        26 explorer.exe 1 152 19->26         started        process11 process12 28 conhost.exe 24->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8dad8694366562f6e92484ba1a56852b59a9f71578d0c995e0e2001303ecaba4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-13 11:06:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rwwynfbwmvrpn2jeqs5buvuffnm2t5yvpdimtfpa4iabga7mvosa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0640696a123e0be076e0a4c2c20de683cc4e99c849dbb5246f759e1fa08b2915
Formbook
7bfabb3e53f70e2ad39155a8af8d7e27a07ec01b0ba8faed52cb569e4f78142f
Formbook
87f8905d999f293634fddf1bff47a614041bdfaa2f07ef19fe70e5296a7b086e
Formbook
8a0fb297baf6f3affb73e0c20116dec0bbbae0292fcbffc3948051555df5099d
Formbook
ab1f38c108a42d0abb2a297c0b39863b200895a71fd2847aea5b141f8b9d8e18
Formbook
b9829a5660b2dcf188de5595741b42380f091c30bb3be299e131b61171d7b513
Formbook
c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7
Formbook
d544f115e860d3282bd996d7b12ac92c10097d68d135667cca0f847ca754f8ef
Formbook
+ 13'311 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:9mj8 loader rat suricata
Link:
https://tria.ge/reports/211213-n2wt9aeffm/
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.alvarezdelugo.store/9mj8/
Unpacked files
SH256 hash:
13ed93c21986148c296695024a2fcab4a8928d4f147549064a63f15607517088
MD5 hash:
f74318326e0982fba8b8959a664cb1e5
SHA1 hash:
f85e9cd29c74cc442c438d95cdddbced18c7067d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/71d7c54c-7843-425f-8452-92688011aa29/
Parent samples :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 hash:
f8ee3ec61da05401295cfc650a604dc644a16a8d7afc9f090cd9f7a0d9300317
MD5 hash:
7e9f1e09d0aa634d949c26737c26ff3c
SHA1 hash:
cb6b35efc98d0656148907ce56268a964556664d
Link:
https://www.unpac.me/results/71d7c54c-7843-425f-8452-92688011aa29/
SH256 hash:
16330abc0bad1bebd43edffcac2df275ae839f38a3d048ab2571f93170f79754
MD5 hash:
e512ccb59121b691086f84324c0ef53a
SHA1 hash:
196fe9d0971817ef998c93ce0a92fe0141fdc3ba
Link:
https://www.unpac.me/results/71d7c54c-7843-425f-8452-92688011aa29/
SH256 hash:
8dad8694366562f6e92484ba1a56852b59a9f71578d0c995e0e2001303ecaba4
MD5 hash:
80129d6b2e2a86324bb0e434abed6003
SHA1 hash:
5af183d8f2f0e8f43c0381abac5e455be76c8022
Link:
https://www.unpac.me/results/71d7c54c-7843-425f-8452-92688011aa29/
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/8dad8694366562f6e92484ba1a56852b59a9f71578d0c995e0e2001303ecaba4

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: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.

Cape
Cape
https://www.capesandbox.com/analysis/213532/

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