MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28
SHA3-384 hash: 14379d016a6486cf2ad4196e780af95510682d33755103b7c75520a92a3d7719b110437ae8cbb77e2924e2e2cec16558
SHA1 hash: 1f4e435aa7b5f063c82f23b39bd05c01e21ba760
MD5 hash: 2adc964e2b905ac66e474cfd4d3b5ca2
humanhash: oven-yankee-high-wolfram
File name:2adc964e2b905ac66e474cfd4d3b5ca2
Download: download sample
Signature FormBook
Create hunting rule
File size:1'019'392 bytes
First seen:2022-01-25 10:07:27 UTC
Last seen:2022-01-25 11:30:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:RPeY2CJI8Z5nay8YUgs/XNUrjhzfe4HI:1H2CJI8Z5abPd6hesI
TLSH T1C125125E7249C51AC2BE44342C73C0BA2A76AE47EE60DB9538C1FF6FB8F73910650166
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
145
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO 101497.doc
Verdict:
Malicious activity
Analysis date:
2022-01-25 09:16:18 UTC
Tags:
exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/c81a2142-8655-4d44-ad00-4f8abfd0602f

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/222326/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1171.20935.5718.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Creating a file
DNS request
Searching for synchronization primitives
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Creating a file in the %temp% directory
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/61efcc080f8c757253e64fbf/reports/e6c37572-147d-416b-8f94-5f9ece550632/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:
Unknown
Link:
https://analyze.intezer.com/analyses/424a6f56-a54f-4788-a281-09add31cfeec
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/927140
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Detected FormBook malware
Found malware configuration
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)
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 559618 Sample: AlpX62Hn8q Startdate: 25/01/2022 Architecture: WINDOWS Score: 100 35 www.warriorbyte.com 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 11 other signatures 2->43 11 AlpX62Hn8q.exe 1 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\AlpX62Hn8q.exe.log, ASCII 11->33 dropped 55 Writes to foreign memory regions 11->55 57 Allocates memory in foreign processes 11->57 59 Injects a PE file into a foreign processes 11->59 15 net.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 2 other signatures 15->67 18 explorer.exe 15->18 injected process9 process10 20 cmmon32.exe 18 18->20         started        file11 29 C:\Users\user\AppData\...29MPlogrv.ini, data 20->29 dropped 31 C:\Users\user\AppData\...31MPlogri.ini, data 20->31 dropped 45 Detected FormBook malware 20->45 47 Tries to steal Mail credentials (via file / registry access) 20->47 49 Tries to harvest and steal browser information (history, passwords, etc) 20->49 51 3 other signatures 20->51 24 cmd.exe 2 20->24         started        signatures12 process13 signatures14 53 Tries to harvest and steal browser information (history, passwords, etc) 24->53 27 conhost.exe 24->27         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28/
Threat name:
ByteCode-MSIL.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2022-01-24 17:18:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
21 of 43 (48.84%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pnyso37mv3cwz7mybwg4jul7on4skz66ct6qkvhibuh3q2gafmua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:k8be rat spyware stealer trojan
Link:
https://tria.ge/reports/220125-l588msdgh8/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
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
Reads user/profile data of web browsers
Formbook Payload
Formbook
Unpacked files
SH256 hash:
d3e26433fbd461dbb3d994319c9c14ce76ac92536d014797e8d8390cca3d0611
MD5 hash:
a84694f06e42ba5fb927a8c6fab8895f
SHA1 hash:
fc074549c8bcb24409e8bfc6421a100345aa3172
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/694da338-4b3d-4061-9797-e36e1ec127cb/
SH256 hash:
4bae28eba17d0e5aa6875c56d8175b760b7337dee0b6c2092ed5dce4cc7440a2
MD5 hash:
05bd923b57ec502c1754f11dae2659a3
SHA1 hash:
f371d963e80cd297118fd7c8fdcda5a91cee4bf2
Link:
https://www.unpac.me/results/694da338-4b3d-4061-9797-e36e1ec127cb/
SH256 hash:
a2e02ddb4c2fe78cfad1a9408865bfd8a7cb8da8f0970c3c5979a93258a10e37
MD5 hash:
b83e5e58b6aec2a1d37ccc24a2bc67a5
SHA1 hash:
e6ee629421bf7103c84406e95cd6523764a125f4
Link:
https://www.unpac.me/results/694da338-4b3d-4061-9797-e36e1ec127cb/
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/694da338-4b3d-4061-9797-e36e1ec127cb/
SH256 hash:
7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28
MD5 hash:
2adc964e2b905ac66e474cfd4d3b5ca2
SHA1 hash:
1f4e435aa7b5f063c82f23b39bd05c01e21ba760
Link:
https://www.unpac.me/results/694da338-4b3d-4061-9797-e36e1ec127cb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28

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 7b71276fecaec56cfd980d8dc4d17f73792567de14fd0554e80d0fb868c02b28

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2004690/
Cape
Cape
https://www.capesandbox.com/analysis/222326/

Comments


Avatar
zbet commented on 2022-01-25 10:07:29 UTC

url : hxxp://paxz.tk/ivoryzx.exe