MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552. 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 6 File information Comments
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SHA256 hash: af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552
SHA3-384 hash: d2e872661c598e989d6a42952bb4b283d3158dc10be5651155186ed8168a6645138c8c060603181b78f27ab8773086ee
SHA1 hash: 3e43c14f9e010f1bcdcce6618f9ca5503de08579
MD5 hash: ad3b7a36fc62bf369b5c563d2b5db945
humanhash: tennessee-monkey-hot-maine
File name:Facturas Pagadas.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:549'376 bytes
First seen:2021-09-21 17:21:00 UTC
Last seen:2021-09-21 18:01:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:9IdemtiK5oBfZQElcqE+RqFoVnQ1PSYNsEOmuBE6rp:V+FoBfDcqE+4FInqPSzmf6rp
Threatray 9'472 similar samples on MalwareBazaar
TLSH T105C42339C719D771C85D9BBF102256480BB4A2C6BA23DE25AF87F08DEC1B7C14229DB5
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
330
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Facturas Pagadas.exe.bin
Verdict:
Malicious activity
Analysis date:
2021-09-21 17:38:26 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/d8bae841-c79c-41fe-ac6e-4308e6934f88

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/189944/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.22821.4695.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/457c77fe-cfce-44a4-b685-f13de01669e0
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/855095
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
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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: 487526 Sample: Facturas Pagadas.exe Startdate: 21/09/2021 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 11 other signatures 2->42 10 Facturas Pagadas.exe 3 2->10         started        process3 file4 28 C:\Users\user\...\Facturas Pagadas.exe.log, ASCII 10->28 dropped 54 Injects a PE file into a foreign processes 10->54 14 Facturas Pagadas.exe 10->14         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 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.bankonthemoon.com 93.191.156.4, 49780, 80 ZITCOMDK Denmark 17->30 32 katezarb.com 151.106.124.99, 49788, 80 PLUSSERVER-ASN1DE Germany 17->32 34 2 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 svchost.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-21 16:43:55 UTC
AV detection:
22 of 45 (48.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=v4fph27tvqrrvv35xzgl7ih3fvedclkmuc2ugeebarvlbgvdwvja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
157b65691069af6dacc64c99c9ae93a36377a97bf4030480ffc1f507db917a64
Formbook
5281533c78892f2b571668ef9c770ce9c04ee249397040db9b5975ed47601474
Formbook
6bcdb1b6795c22308aee5d390cfae409d21a3238a304466dd54c1dee43570afd
Formbook
6c0e85b84f2b1dfdb580a168386ad91efe7f734066ff3a12a0d359fcb4711dca
Formbook
92b86a3617c61eedc7c080cf52283c060da54017337b6376790e5a34a360fdfa
Formbook
97d4de7a9478320c718f18c0f57349cfc611f5dee0aab5271304e4670e63d2a8
Formbook
a99b696e8ac16303843b26c95c982d5be9b9fd657d843937cc586c9a8dc29b83
Formbook
d2d6a8c31acdd92eb9a005e2fac8838a382ab0425fc01bc88616bda185ab7b4c
Formbook
d39ec2fb7fa07bb6886173571262d2324d96b6e879ccc4f2cea46ece183e576a
Formbook
fc2480dee0caf0759cb11b01bea00a2588a48267c65ea4e81c66ba2a350fc177
Formbook
+ 9'462 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g4m1 rat spyware stealer trojan
Link:
https://tria.ge/reports/210921-vwz32saad4/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.kaixin332.com/g4m1/
Unpacked files
SH256 hash:
4cab108c569e37f681ac95ff3e686464bf9dac0b611b988e675450d32376c96f
MD5 hash:
694fa1810ce7446af09cc626fc5b611b
SHA1 hash:
cf439be9e9724c18b9ccc54f59e6d6b3d8ae3a2c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/33be9760-8c76-4c25-b985-c59b5ee17d10/
Parent samples :
157b65691069af6dacc64c99c9ae93a36377a97bf4030480ffc1f507db917a64
af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552
SH256 hash:
cac8b347040a359c02ae5e658d3d76230c7dd7eb33505605ed0b9bc49ff268c7
MD5 hash:
71a894ff252c767b80d65ab1e54fda2b
SHA1 hash:
bcc4ff628585ca28b8b0f2c30e63049b910d4d49
Link:
https://www.unpac.me/results/33be9760-8c76-4c25-b985-c59b5ee17d10/
SH256 hash:
75f58faa8300e0dd1fb04527a412c078a6f663285fb3a16b0a292a90f1394316
MD5 hash:
988bb14e468e30368ee3c919235352cb
SHA1 hash:
b8f6bf07eaeabf4d8ef9809979f7f360b63d9dee
Link:
https://www.unpac.me/results/33be9760-8c76-4c25-b985-c59b5ee17d10/
SH256 hash:
4c13855dff14338d09db8e77cb63862b2d8306d74279741d6065d68090632e29
MD5 hash:
aa912d21c626f64c36cfce701ec84464
SHA1 hash:
28dc8b23bf59b4f64ad62302c5d20f8d39bb7db0
Link:
https://www.unpac.me/results/33be9760-8c76-4c25-b985-c59b5ee17d10/
SH256 hash:
af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552
MD5 hash:
ad3b7a36fc62bf369b5c563d2b5db945
SHA1 hash:
3e43c14f9e010f1bcdcce6618f9ca5503de08579
Link:
https://www.unpac.me/results/33be9760-8c76-4c25-b985-c59b5ee17d10/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/af0af3ebf3ac231ad77dbe4cbfa0fb2d48312d4ca0b5431081046ab09aa3b552

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

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/189944/

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