MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
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SHA256 hash: 818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612
SHA3-384 hash: 84562afb9d91abde7cff13f064f9ccff8513dd7c228eed11e80244ffc5922336d552f9999f248225662491d5c5eaf027
SHA1 hash: c4cb008639ef18cea1293be474eceb2570903413
MD5 hash: d861b1cc47aaaf6a73f3460562806956
humanhash: four-delta-batman-pasta
File name:Quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:972'800 bytes
First seen:2021-08-18 12:56:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:i0Dc9F3nC0Py3gAhT0VbMRybCKaPGm251Qd2H+bEAWZqlK9BSNQjlzY6F7cAqGQs:iemMR8FaP251M2eqATEhYOD1Kn2I
Threatray 8'007 similar samples on MalwareBazaar
TLSH T1082581BC15B9A627D069C635AAE5C41FF040DC9F311DE867E4DAA3B7432AB4224C723D
dhash icon 9a07d41c0d2a6a78 (5 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quotation.exe
Verdict:
Malicious activity
Analysis date:
2021-08-18 12:58:13 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/111fdb8b-4e4e-43b4-a12d-ec869564336d

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/180320/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.998-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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/027a723e-873a-4916-b808-0f4a3316bd93
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/835065
Signature
.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
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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: 467496 Sample: Quotation.exe Startdate: 18/08/2021 Architecture: WINDOWS Score: 100 33 www.3buagency.com 2->33 35 3buagency.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Multi AV Scanner detection for domain / URL 2->45 47 Found malware configuration 2->47 49 10 other signatures 2->49 11 Quotation.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\Quotation.exe.log, ASCII 11->31 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 15 Quotation.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 37 speakingsuite.com 185.114.98.152, 49752, 80 UK-34SP-ASGB United Kingdom 18->37 39 www.adburb.com 64.190.62.111, 49746, 80 NBS11696US United States 18->39 41 13 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 control.exe 18->22         started        25 autofmt.exe 18->25         started        signatures11 process12 signatures13 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 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-18 08:40:09 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qggbwwhnf6ifbhnrnap5vwdycp2x6exhitosvxx6yylwc4lg4yja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
25ccba7b1faefe85e035fb10cf4bc3c72096640699e19ec1c024c7332c213b58
Formbook
45fad79d5665cbad096d1029eb228bdca999352958c393d08e2813787fc2dcb0
Formbook
4c5ba895d47529032c749f81ae5f8ffba7fab5493a2bd33f699c0d05aabfa080
Formbook
59376f91fb0637be9672bb23efc91acf2ef949826c74dfb927146f9799eecd08
Formbook
6134f857a84f2686c84d2d2273be977eafa19b97acdc16532e4b206d62f51e28
Formbook
abb1db77386f0eb3cd2c68603ee8817d6d1015287422182845345dad70503564
Formbook
c35dc511756121de1ea79ead44b8d25157d6356bc5a59c2ff530a60b2c444bec
Formbook
+ 7'997 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:udew loader rat
Link:
https://tria.ge/reports/210818-mdzl9f2jcs/
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
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.agendno.com/udew/
Unpacked files
SH256 hash:
80f7b7c57be9775e942dc1fdb612d0bdd9e224fed1da78074739e1fdbde70f76
MD5 hash:
98bb00c28c08334a52adae5c732d96a2
SHA1 hash:
94fa243ab9dafd234f072a6952adc50af823d904
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4c74145a-ff96-4e9e-a119-900fb71db80e/
Parent samples :
45fad79d5665cbad096d1029eb228bdca999352958c393d08e2813787fc2dcb0
c35dc511756121de1ea79ead44b8d25157d6356bc5a59c2ff530a60b2c444bec
6134f857a84f2686c84d2d2273be977eafa19b97acdc16532e4b206d62f51e28
4c5ba895d47529032c749f81ae5f8ffba7fab5493a2bd33f699c0d05aabfa080
818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612
SH256 hash:
6912e4bedd1288f116e968f0a79d9797f6d6bd24d45a5f10c52e20f9d33b8c61
MD5 hash:
03bde4a82ad64c0f314985232fbca3fa
SHA1 hash:
e8d0b6339e94192eaaca32c812f914e60576dca6
Link:
https://www.unpac.me/results/4c74145a-ff96-4e9e-a119-900fb71db80e/
SH256 hash:
b571e7b7689dd0c05b5086a0b3464157d32787622def3ff41ec063989bda55af
MD5 hash:
eba63be72d3061c3d080de0d2170a022
SHA1 hash:
1f5ef8e7c747f3fdf73d46a79d44d1725125a801
Link:
https://www.unpac.me/results/4c74145a-ff96-4e9e-a119-900fb71db80e/
SH256 hash:
818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612
MD5 hash:
d861b1cc47aaaf6a73f3460562806956
SHA1 hash:
c4cb008639ef18cea1293be474eceb2570903413
Link:
https://www.unpac.me/results/4c74145a-ff96-4e9e-a119-900fb71db80e/
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/818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612

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.

Malspam

Formbook

Executable exe 818c1b58ed2f90509db1681fdad87813f57f12e744dd2adefec617617166e612

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/180320/

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