MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c
SHA3-384 hash: 9bd5d8aa36c6b1ec3dd94fa9d90694b7f8ab8a90c699b9d4880b6d10d6fd19eb798f4b3f2dfba8d85016efe2e2cffd26
SHA1 hash: 82d1940225563d195b34d7e4546c8cd2a2094083
MD5 hash: c8a4cfffb04d6f2600fab0c1cbc55a44
humanhash: orange-glucose-white-edward
File name:c8a4cfffb04d6f2600fab0c1cbc55a44
Download: download sample
Signature Formbook
Create hunting rule
File size:819'200 bytes
First seen:2022-09-29 03:58:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:3nQKRglfUq0k45uvZgso/aOexxmVw88pqvOxY129MxJJfI+:jRglMCBfo/+uwtEIY1bx7f
TLSH T16005CF261BE95F0BD025A7F881D0C2B6A3FA9C11E462D3879FCA5CDFB096B548760713
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon f0ccb2f0e8f0ccf0 (12 x Formbook, 8 x AgentTesla, 8 x SnakeKeylogger)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
308
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/314583/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.3126.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.PackedNET.389.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63351809dace43a378f3bbb6/reports/9ecdf4ba-979e-46a1-a43e-11fd103cf7db/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/5a67c598-b5fb-4450-a281-cab51a91ee37
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1079722
Signature
.NET source code contains potential unpacker
Deletes itself after installation
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 712279 Sample: WJJKxcSc00.exe Startdate: 29/09/2022 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 5 other signatures 2->39 8 WJJKxcSc00.exe 3 2->8         started        process3 file4 23 C:\Users\user\AppData\...\WJJKxcSc00.exe.log, ASCII 8->23 dropped 11 WJJKxcSc00.exe 8->11         started        14 WJJKxcSc00.exe 8->14         started        process5 signatures6 49 Modifies the context of a thread in another process (thread injection) 11->49 51 Maps a DLL or memory area into another process 11->51 53 Sample uses process hollowing technique 11->53 55 Queues an APC in another process (thread injection) 11->55 16 explorer.exe 11->16 injected process7 dnsIp8 25 www.nicolewebcamsjoinnow.com 81.17.29.150, 49709, 49710, 49711 PLI-ASCH Switzerland 16->25 27 www.michaelcourtois.com 64.29.151.221, 49706, 49707, 49708 INFB2-ASUS United States 16->27 29 4 other IPs or domains 16->29 31 System process connects to network (likely due to code injection or exploit) 16->31 20 raserver.exe 13 16->20         started        signatures9 process10 signatures11 41 Tries to steal Mail credentials (via file / registry access) 20->41 43 Tries to harvest and steal browser information (history, passwords, etc) 20->43 45 Deletes itself after installation 20->45 47 2 other signatures 20->47
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-09-22 05:14:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ibzo656avmegzra6b2mx2fd3bp26qrz5wtbu5ksksaspy4qhygga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:nogs rat spyware stealer trojan
Link:
https://tria.ge/reports/220929-ej3emsagdk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/be741a2f-b254-4c6c-a087-e011c05cfaf3
Unpacked files
SH256 hash:
d9f577eeb5f636400150bb327fd1bdf666d438d9c86924c1f044a4fef847c11d
MD5 hash:
bd41a466d6de81842ef36f24dadb3daf
SHA1 hash:
6b7aa252f5c347540a8b8e9f79a4c8831e348580
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
Parent samples :
7ca3b28aa32d6b9bd972c430c47691db7212f9fd7b713c3ff2fab8b10a0bd66a
d3fe4fbe955c26eb8ea6cb273a7102168e27bbfbf86cfbd5f9e1eaa3023e231f
4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c
SH256 hash:
4699a0e0e4411879c05cb801e9471a0918518258ce932a6b63a53ed0da1ca7bf
MD5 hash:
1016aaa68ecb65a3bdbd903eba94c1fb
SHA1 hash:
8b3cde59ee4a9e72865695d55f0275274e460795
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
SH256 hash:
f36fde396582e7139209e4ded2070d94b551da6df4a07b988d32f042c38963f2
MD5 hash:
e661b04bcf69f0a4ff5b0dffe56daf1a
SHA1 hash:
e475012096126416f720ca734814b878c884c1eb
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
SH256 hash:
2470b39032f6182252039c88199016566b0de30c6aa02163a143427afedd12af
MD5 hash:
c3a1924684ca30ed22234ce1d9111dfc
SHA1 hash:
7347706241422758c06440fd6044ae4e042b456b
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
SH256 hash:
4c3899fd95ccce366c0f4f2c91f749ecb9dab670b918585361ff83726ce6496b
MD5 hash:
8d56e8eed9e081aef4465f85988024b8
SHA1 hash:
22409bbf4045453f32e782421515ceb64f541c9c
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
SH256 hash:
4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c
MD5 hash:
c8a4cfffb04d6f2600fab0c1cbc55a44
SHA1 hash:
82d1940225563d195b34d7e4546c8cd2a2094083
Link:
https://www.unpac.me/results/3de7ba16-47d9-4ca7-abbe-96b89b5e83f5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c

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 4072ef77c0ab086cc41e0e997d147b0bf5e8473db4c34eaa4a9024fc7207c18c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2299038/
Cape
Cape
https://www.capesandbox.com/analysis/314583/

Comments


Avatar
zbet commented on 2022-09-29 03:58:46 UTC

url : hxxp://208.67.105.179/dollzx.exe