MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d. 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 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d
SHA3-384 hash: 971c4fae95b6347a5c9710d61b773eb15e6b830b570b79797132df2face457c79d1bbf6361850727420ed621ffc2f56b
SHA1 hash: d88a32c2d756e27814738004bdfb061db483619c
MD5 hash: 25c91a6c077e0593b9c202f4cffecaa4
humanhash: william-tennessee-coffee-speaker
File name:25c91a6c077e0593b9c202f4cffecaa4
Download: download sample
Signature Formbook
Create hunting rule
File size:779'776 bytes
First seen:2022-03-16 09:44:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:eIuwOEhmuSxaXrvl7s+KY3eskEnnmuSK05/6JncxcgoTXxUVZfXol:buwOPaIYmEmuEV61OiXxUro
TLSH T117F412EE318A6BA3EC35C3FE99BAA00817B67CA59131D2499CC239D75592FCC2410F57
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
233
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
MICROWELL ORDEN SLOVAKIA.xlsx
Verdict:
Malicious activity
Analysis date:
2022-03-16 07:52:41 UTC
Tags:
encrypted trojan opendir exploit CVE-2017-11882 loader formbook stealer
Link:
https://app.any.run/tasks/5bd9d764-f6ac-48a2-aaaa-e0f2744b044a

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/251335/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.25955.16624.29121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
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/6231b1a6b94fb38cb48d641b/reports/722b1b81-30e3-49cf-9c88-9ac2fcfa55dd/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/556a0277-c1b9-4f73-98b3-10014cfae862
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/957818
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Sigma detected: Application Executed Non-Executable Extension
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 590298 Sample: M7NtYyxbey Startdate: 16/03/2022 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 10 other signatures 2->46 10 M7NtYyxbey.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\...\M7NtYyxbey.exe.log, ASCII 10->30 dropped 13 vbc.exe 10->13         started        16 vbc.exe 10->16         started        process5 signatures6 58 Modifies the context of a thread in another process (thread injection) 13->58 60 Maps a DLL or memory area into another process 13->60 62 Sample uses process hollowing technique 13->62 64 Queues an APC in another process (thread injection) 13->64 18 explorer.exe 13->18 injected 66 Tries to detect virtualization through RDTSC time measurements 16->66 process7 dnsIp8 32 www.kijapikahi.com 18->32 34 www.kijapikahi.com 23.106.223.243, 49841, 49842, 80 LEASEWEB-USA-SEA-10US United States 18->34 36 6 other IPs or domains 18->36 48 System process connects to network (likely due to code injection or exploit) 18->48 22 rundll32.exe 12 18->22         started        signatures9 process10 dnsIp11 38 www.kijapikahi.com 22->38 50 System process connects to network (likely due to code injection or exploit) 22->50 52 Modifies the context of a thread in another process (thread injection) 22->52 54 Maps a DLL or memory area into another process 22->54 56 Tries to detect virtualization through RDTSC time measurements 22->56 26 cmd.exe 1 22->26         started        signatures12 process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-16 09:45:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
28 of 42 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vh4p6q45nt2ryyff7g52gzj6usapu4resvrochllya55vdthf5oq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a2rs rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220316-lq3gjsacej/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
88a81283acc4ca5b73bfe3e2d3a198490691f41b766aa26ae7d2a9392f4824d1
MD5 hash:
72b00e5738248db137cbb1bf987a79c3
SHA1 hash:
70a9d389e6e507adcd9ffbaeeb214bc284f14e22
Link:
https://www.unpac.me/results/ce42792c-c80c-489a-bb82-30c69f3953bf/
SH256 hash:
842c29c9045c48fd1144f77e5b7b3eef88e45a8a494d77e4eb3483077f28a120
MD5 hash:
a1dfdf7b249aa75715ff9c62f2ba74b5
SHA1 hash:
746e9888ffe4af5bfcb7e391d7cc8cfefdc6435d
Link:
https://www.unpac.me/results/ce42792c-c80c-489a-bb82-30c69f3953bf/
SH256 hash:
4ffb59b76867dc3ee5df8b1476a82043c8bbfa9679aa90a2e4b937292b3722b8
MD5 hash:
fc6d91ff314356715f5c76ba61240c9f
SHA1 hash:
aac8291f9af1c2e18b8302550ee4d1c96120949a
Link:
https://www.unpac.me/results/ce42792c-c80c-489a-bb82-30c69f3953bf/
SH256 hash:
de711978d83654dfd72b45187f161bfa2241f39277b55732bc35428962c40f16
MD5 hash:
5219170b15747107352cacbe41ea5a54
SHA1 hash:
6fb5234a6661bf18e37df2239af4eaf341533779
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ce42792c-c80c-489a-bb82-30c69f3953bf/
Parent samples :
a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d
0488a1801640896ea2e4922dcd03d47bea603db8b938aa2060bd529060ec37fd
d0d6b8f342215efb1adba27088bb7f6dfe14dd3734612aecf1124b121c3a7cc6
7fb0c21777bc2f9b0dd0aa5519eebbe5ec9afa008e67edc2abec7e5c94957a36
bce2bc3a55dfecfd388b134663893b70c3830b20a8afa395e36a28097e305943
cd0c02c985600efee1edc7dcca8808cdf06f3ac1d52427d39c2931d2472caa6a
SH256 hash:
a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d
MD5 hash:
25c91a6c077e0593b9c202f4cffecaa4
SHA1 hash:
d88a32c2d756e27814738004bdfb061db483619c
Link:
https://www.unpac.me/results/ce42792c-c80c-489a-bb82-30c69f3953bf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d

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.

Web download

Formbook

Executable exe a9f8ff439d6cf51c60a5f9bba3653ea480fa72249562e11d6bc03bda8e672f5d

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/251335/
  
URLhaus
https://urlhaus.abuse.ch/url/2099867/

Comments


Avatar
zbet commented on 2022-03-16 09:44:30 UTC

url : hxxp://107.173.192.140/112/vbc.exe