MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6
SHA3-384 hash: a9fe3dcc00c58bc0738299d97794c6d4187f4010b7b1401f344859417a8e406b4a6304e5432a91cc65320f7a078dc7c3
SHA1 hash: 337686652fc8aa067691eb88e00734b477ca86e5
MD5 hash: 9f031a71a8f4dedaff85f360942cd0b7
humanhash: happy-nebraska-princess-potato
File name:9f031a71a8f4dedaff85f360942cd0b7.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:14'336 bytes
First seen:2022-05-22 12:17:04 UTC
Last seen:2022-05-22 12:39:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 192:cjlfJ2hExIBkOiGqhgfF54pWU711P/NeTR32NeT4+vDMKAVJ:cjlfJBIBwGqW4pWU71V/NekNek+vDq
TLSH T13452E6226344C560C9558E324C939A540637F913887EBA5D3ACC7D2FAF33F85C9A3BA5
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)
File icon (PE):PE icon
dhash icon b298acbab2ca7a72 (2'327 x GCleaner, 1'631 x Socks5Systemz, 67 x RedLineStealer)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
357
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
9f031a71a8f4dedaff85f360942cd0b7.exe
Verdict:
Malicious activity
Analysis date:
2022-05-22 12:22:03 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/610c967f-18f7-4a48-89bf-273ce13bd235

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/273433/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/628a29ff6eb3ff32631eea67/reports/743d4c7a-06bc-42ac-a778-18b6ac65c293/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/68bbb67b-cc0f-4085-b4d8-c487eea3b87e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/999329
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 domain / URL
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
Snort IDS alert for network traffic
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 631823 Sample: bhZzJa0K7B.exe Startdate: 22/05/2022 Architecture: WINDOWS Score: 100 45 www.ayekooprojectamazing.com 2->45 65 Snort IDS alert for network traffic 2->65 67 Multi AV Scanner detection for domain / URL 2->67 69 Found malware configuration 2->69 71 10 other signatures 2->71 11 bhZzJa0K7B.exe 15 7 2->11         started        signatures3 process4 dnsIp5 47 darley.ml 192.185.174.178, 49749, 80 UNIFIEDLAYER-AS-1US United States 11->47 39 C:\Users\user\AppData\...\Lkcsagkqm.exe, PE32 11->39 dropped 41 C:\Users\...\Lkcsagkqm.exe:Zone.Identifier, ASCII 11->41 dropped 43 C:\Users\user\AppData\...\bhZzJa0K7B.exe.log, ASCII 11->43 dropped 75 Creates an undocumented autostart registry key 11->75 77 Writes to foreign memory regions 11->77 79 Allocates memory in foreign processes 11->79 81 Injects a PE file into a foreign processes 11->81 16 MSBuild.exe 11->16         started        19 MSBuild.exe 11->19         started        21 cmd.exe 1 11->21         started        23 MSBuild.exe 11->23         started        file6 signatures7 process8 signatures9 49 Modifies the context of a thread in another process (thread injection) 16->49 51 Maps a DLL or memory area into another process 16->51 53 Sample uses process hollowing technique 16->53 55 Queues an APC in another process (thread injection) 16->55 25 explorer.exe 16->25 injected 57 Tries to detect virtualization through RDTSC time measurements 19->57 28 conhost.exe 21->28         started        30 timeout.exe 1 21->30         started        process10 signatures11 73 Uses netsh to modify the Windows network and firewall settings 25->73 32 netsh.exe 25->32         started        process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 32->59 61 Maps a DLL or memory area into another process 32->61 63 Tries to detect virtualization through RDTSC time measurements 32->63 35 cmd.exe 1 32->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-21 13:43:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vqr5kcmztotk5757jgsb4eckp2dwq4tubw7sjth7kt23ynxoh23a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220522-pgldfsaad3/
Behaviour
Delays execution with timeout.exe
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6
MD5 hash:
9f031a71a8f4dedaff85f360942cd0b7
SHA1 hash:
337686652fc8aa067691eb88e00734b477ca86e5
Link:
https://www.unpac.me/results/4a144710-348e-43c5-b388-9ebbf27d1566/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ac23d509999b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6

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 ac23d509999ba6aeffbf49a41e104a7e876872740dbf24ccff54f5bc36ee3eb6

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2204013/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2204313/
Cape
Cape
https://www.capesandbox.com/analysis/273433/

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