MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175
SHA3-384 hash: 85b0baac3b34543ffa07a53da9dea763032ed47b471b27edc2454ed6a23d4dcaa75171dffdbd3e1a33c6d79f699a8624
SHA1 hash: 0919aa900e50b290cc90426537ec25a9c44496b0
MD5 hash: 3e0b369f71d263bd0918bfce2b1873c3
humanhash: failed-earth-illinois-ten
File name:INVOICE.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'072'128 bytes
First seen:2021-09-24 14:24:52 UTC
Last seen:2021-09-24 15:13:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:5qsfQC+n8xy54RXohO1PJW9SsIF/O1XpAfkdpHRSEjl9FOS2Vx2qMYbiZ:5qIQRn8xPoYnW9SsIFMBpHZ8/iYb
Threatray 5'956 similar samples on MalwareBazaar
TLSH T141356C6422795BBEE99F5BBD80B32140936D7451F56AE35E8FF900DC2816F5B8808F23
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
232
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
INVOICE.exe
Verdict:
Malicious activity
Analysis date:
2021-09-24 14:25:39 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/adbd32ce-5c0b-4d73-b7fe-44d259815ccb

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/191201/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.27151.3009.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5f01869f-a556-439c-934e-cd718eb6f9ac
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/857420
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
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 dnsIp2 2 Behavior Graph ID: 489851 Sample: INVOICE.exe Startdate: 24/09/2021 Architecture: WINDOWS Score: 100 31 www.soolls.com 2->31 33 soolls.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 10 other signatures 2->47 11 INVOICE.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\INVOICE.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Injects a PE file into a foreign processes 11->61 15 INVOICE.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 35 caulsshop.com 109.106.253.204, 49836, 80 NETNET-ASRS Serbia 18->35 37 www.gra68.net 14.128.134.68, 49780, 80 KIXS-AS-KRKoreaTelecomKR Korea Republic of 18->37 39 12 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 cmstp.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-24 14:25:09 UTC
AV detection:
15 of 28 (53.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yehyokwh2vwfzdkrkhvy2xb2xitv7a55kvyaydodq53kaszhkf2q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
14b95763e86e899de22402ae2d7204ff7d9ceab85a12a1599a6c8d5964fa306a
Formbook
3f5c235293cfdde26a725b19b3cbaefc44dae026b7dff9124002f42e564df18b
Formbook
672ca84f8680ab545196dd1f961b3f456ae6b4ff1e0629fab96ed0625f22bbd1
Formbook
80b056a8c2fee08fd3361a8a271dea407425ca335275d49f81a1c50a06d9ed98
Formbook
95961cf64d11a2708c81f67cd720ec6cd8c403258bd4f61fad85610b0d149a43
Formbook
a1e601d45399b724a7247ca82708d74182923dc096c62031ec80419e26f8e0f6
Formbook
dc1c5ccb8d61106eac3205901e328a044d429c32c68b7b1c45def63ae29f1b45
Formbook
e091222f766082c33c0606405115206cb2d915929dfe2ac899b1945d6442c512
Formbook
e9f37a053f32c4f4732ba0ff24dba4d0a57a4e2dc8e8f1698e5601385371ce8e
Formbook
ea12191fcd49d36b68be2c466a24cac87cfd79f9d1fb18ef252037f0fb976979
Formbook
+ 5'946 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:m6rs loader rat suricata
Link:
https://tria.ge/reports/210924-rrbccahbfp/
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.litediv.com/m6rs/
Unpacked files
SH256 hash:
f4d6b020072d28b7367a53867a13581e7add694b5841b24cf8083c0072511352
MD5 hash:
26b0439be401307a2eacd6c9b632ddfc
SHA1 hash:
037ac7642633274e6831b3ebd8b9bcb1265bddba
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/dce99291-a308-4921-91d1-a1efd399ef88/
Parent samples :
45f5e2a682896ac3380522e26a0398b8112bafc42948666c9fecafa3dcab69e3
c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175
SH256 hash:
74931a8999e19e09cba182f8a1f2ae542322412194dd8016e49e1e8e807dffa7
MD5 hash:
d73fd013603775259ef1cbf57694fa0a
SHA1 hash:
980a2b105bcc26e11c626f4beeba0426ee9c13e1
Link:
https://www.unpac.me/results/dce99291-a308-4921-91d1-a1efd399ef88/
SH256 hash:
2aea038879a1c095aab06b38b033868386c16f8234cc1355c8f190d38f64e087
MD5 hash:
2fe251ffab3b7511c1f614c55ce72930
SHA1 hash:
5191f54bac3e382e55dbb6aa964adbcafc396a55
Link:
https://www.unpac.me/results/dce99291-a308-4921-91d1-a1efd399ef88/
SH256 hash:
125c91c5099481f8f564a8dd7a1709c3f018760c94daf3d75cb8981e624aefc0
MD5 hash:
46474a3cdd255a32a549b98e35a1cbd5
SHA1 hash:
44de060020e1786dbee72b6eae18249b25e30eea
Link:
https://www.unpac.me/results/dce99291-a308-4921-91d1-a1efd399ef88/
SH256 hash:
c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175
MD5 hash:
3e0b369f71d263bd0918bfce2b1873c3
SHA1 hash:
0919aa900e50b290cc90426537ec25a9c44496b0
Link:
https://www.unpac.me/results/dce99291-a308-4921-91d1-a1efd399ef88/
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/c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175

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: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

File information

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

Malspam

Formbook

Executable exe c10f872ac7d56c5c8d5151eb8d5c3aba275f83bd55700c0dc38776a04b275175

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/191201/

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