MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485
SHA3-384 hash: aedd560546b054f90151f7a5ef0bd5a4901e4309d48f60ba77ee7a1280729bb629d55f585cdca03247b6e8f412a85294
SHA1 hash: ea70458dabf76377c7265955ef96e00c5bb048b8
MD5 hash: 5891d47ec4dd1d0e6a47e59c0e655bac
humanhash: purple-beryllium-venus-comet
File name:Sample order confirmation-pdf-.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:646'144 bytes
First seen:2022-11-02 11:26:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:gwhuJv1oeQD6haFvTREGftYqF6JvNNpiP1AUuqSoVlUkQvhzps7:TuJv1oe26hiFr1uvNNpy1GqSoVlUbs7
Threatray 17'736 similar samples on MalwareBazaar
TLSH T145D4235273529524E96E0BF844E599F177F06C087911C90E38D3B2DF2D3AA8BCF85A63
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
340
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Sample order confirmation-pdf-.exe
Verdict:
Malicious activity
Analysis date:
2022-11-02 11:29:28 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/6c997d17-7338-4231-b2f9-365917598123

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/327117/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.46086.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63625407ce1f43143c2a7036/reports/2fc5ce7e-2486-4a9e-a250-0a4c9551ca8e/overview
Result
Verdict:
MALICIOUS
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/da4bcb0f-8bcb-464c-91bb-63b402815942
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1103217
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 735896 Sample: Sample order confirmation-p... Startdate: 02/11/2022 Architecture: WINDOWS Score: 100 61 Malicious sample detected (through community Yara rule) 2->61 63 Antivirus detection for URL or domain 2->63 65 Sigma detected: Scheduled temp file as task from temp location 2->65 67 11 other signatures 2->67 10 Sample order confirmation-pdf-.exe 7 2->10         started        14 KYflGrpRvem.exe 5 2->14         started        process3 file4 45 C:\Users\user\AppData\...\KYflGrpRvem.exe, PE32 10->45 dropped 47 C:\Users\...\KYflGrpRvem.exe:Zone.Identifier, ASCII 10->47 dropped 49 C:\Users\user\AppData\Local\...\tmpCC96.tmp, XML 10->49 dropped 51 C:\...\Sample order confirmation-pdf-.exe.log, ASCII 10->51 dropped 75 Adds a directory exclusion to Windows Defender 10->75 77 Injects a PE file into a foreign processes 10->77 16 Sample order confirmation-pdf-.exe 10->16         started        19 powershell.exe 19 10->19         started        21 schtasks.exe 1 10->21         started        79 Multi AV Scanner detection for dropped file 14->79 81 Tries to detect virtualization through RDTSC time measurements 14->81 23 KYflGrpRvem.exe 14->23         started        25 schtasks.exe 1 14->25         started        signatures5 process6 signatures7 53 Modifies the context of a thread in another process (thread injection) 16->53 55 Maps a DLL or memory area into another process 16->55 57 Sample uses process hollowing technique 16->57 59 Queues an APC in another process (thread injection) 16->59 27 explorer.exe 16->27 injected 30 conhost.exe 19->30         started        32 conhost.exe 21->32         started        34 conhost.exe 25->34         started        process8 signatures9 83 Uses netstat to query active network connections and open ports 27->83 36 NETSTAT.EXE 27->36         started        39 msdt.exe 27->39         started        process10 signatures11 69 Modifies the context of a thread in another process (thread injection) 36->69 71 Maps a DLL or memory area into another process 36->71 73 Tries to detect virtualization through RDTSC time measurements 36->73 41 cmd.exe 1 36->41         started        process12 process13 43 conhost.exe 41->43         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-11-01 08:02:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yxjvu3semealg3juehwofhmtnxabh7qir4c3z6dosr6rqrkagscq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0a8b952a910a7278793ed7f7373b628afe07138aedde676453482806b2ea7b0b
Formbook
566b1792d888a840627496095ec7ef8fb969dda1390de7cbb33b91ad3a2005ac
Formbook
602c37c6f578a383f3ba97f93358ece07fdcab05baf837f8c83447017be8d88c
Formbook
9e6253eadc5d2960862d03ba5e28577fc6132497bd86f359557be8b8c22c1210
Formbook
9fdb9a2f37301c92127d7c8efcf941acae143968f98c01704453bf6acda3ac45
Formbook
baf5d53f07c0cc8ed9ba7055cc91a18b936d0342e0792f618ee6846cbb8859b6
Formbook
e8db90d8d2528f0767e5b82262223e07578e29f8e4166df3cf495318006ebbd6
Formbook
+ 17'726 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a20e rat spyware stealer trojan
Link:
https://tria.ge/reports/221102-nkeveabdh5/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9e4e078b-79e8-4e3e-8128-5ecef492d6b2
Unpacked files
SH256 hash:
401d37bb542e818ee49038c652fa9d769d216b912fbf638b768d2370cd184854
MD5 hash:
705e49ed906ae2317fb8f126f2ab2f4b
SHA1 hash:
33996978fe870cb59c5bf620bf4c38415ffe1e37
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
Parent samples :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 hash:
15d73a776fe344c81d89f8c1403a88694e798a4698997b7e71ff8cd285043e5e
MD5 hash:
30f4d7c4a68786ee7add65357696b171
SHA1 hash:
f1dc5ea4551456140bda5f1be92ea156260cab2f
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
SH256 hash:
bc444c4ec803b91da7af06cb0eb233fe69f565067f89544bf750fc17a9ede6dd
MD5 hash:
b52058082749f08bbcb7036b0d4189e8
SHA1 hash:
90365baf6b18ff3139da00cd5caf30660643110e
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
SH256 hash:
d77223d6c44986b2bf2e3fa82abecde8f4a604dd3aae3cd9a59cb8fc34843c26
MD5 hash:
17b1025ebaa9667c0848ed740a841cf8
SHA1 hash:
5bc8f5bc5cdc7736ed1243c4620a94e31af6722b
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
SH256 hash:
f192bbedce0bf276373dd06d9e78ecc319ea2e22bc59ec9a8b0dfe7a344c6c18
MD5 hash:
34fcc551c6ec04bef0de4a9e36a9f01d
SHA1 hash:
1982dc384928b244b3b41f3464d5b968a34d61a1
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
SH256 hash:
c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485
MD5 hash:
5891d47ec4dd1d0e6a47e59c0e655bac
SHA1 hash:
ea70458dabf76377c7265955ef96e00c5bb048b8
Link:
https://www.unpac.me/results/ccbb0e34-98bd-4da5-8ebc-1f71137ddc7e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485

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: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 c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/327117/

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