MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88. 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
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SHA256 hash: b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88
SHA3-384 hash: 8b2b98bcce25e072d53e8fd5fb0270b635b2582d6b5498d2bc88ea033af5a6fa4934ca8cfc07a28cea55bdbded1ec11f
SHA1 hash: 4a90ee5fd0c4afba861f4a3fee9951c75769e7a6
MD5 hash: fe69d8fecd835bd99a986216c352040d
humanhash: ceiling-montana-low-texas
File name:fe69d8fecd835bd99a986216c352040d.exe
Download: download sample
Signature Formbook
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File size:859'648 bytes
First seen:2022-09-23 06:17:08 UTC
Last seen:2022-09-23 06:46:21 UTC
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:iIXQe4bpMGqaFKCqcbVCbeFBlkoApM/zY+PXDLsR+kwVnzFwVTi6Y:ypMGDKCqc5jFuyU+PXDgR+kgzFOiz
TLSH T11905DF22D7AA4F47D01263B88490C6B557AAEF45A43EC2476FEA7C9FB0767D18211F03
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 ce9c9496e4949c9c (73 x AgentTesla, 51 x SnakeKeylogger, 30 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
273
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/312525/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.389.1403.2476.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/632d4fe1865ed83c011f628f/reports/830dade2-b6e0-4195-b4c3-a1a09e96db07/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/b0fe8379-75db-4dbd-a34d-140f3e348484
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1075721
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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 submitted file
Performs DNS queries to domains with low reputation
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 detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 708263 Sample: 9cc5rxD82X.exe Startdate: 23/09/2022 Architecture: WINDOWS Score: 100 31 www.defiserv.xyz 2->31 39 Snort IDS alert for network traffic 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 7 other signatures 2->45 11 9cc5rxD82X.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\9cc5rxD82X.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 15 9cc5rxD82X.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.bellescraftkitchen.com 162.214.129.149, 49715, 80 UNIFIEDLAYER-AS-1US United States 18->33 35 www.repecctehpamp.com 198.54.117.242, 49733, 80 NAMECHEAP-NETUS United States 18->35 37 6 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 rundll32.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-09-22 20:18:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqohjerebsz7cbdd5hi363n5uj2mw5ky5bm4ng2en7dw35n7t2ea._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:os56 rat spyware stealer trojan
Link:
https://tria.ge/reports/220923-g2l7gshcek/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/02c91ed5-b72a-41ec-90a5-6a64bf7adfda
Unpacked files
SH256 hash:
71e0f0b85a357c6942c94ca85b28b039ba3fec74ff0ba9c748b0853642724e31
MD5 hash:
9d69770f12819d5fec89a06d42a4a1e9
SHA1 hash:
529dc07b1fae900f6f3a27da0d7db51533ed0e77
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
Parent samples :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 hash:
2470b39032f6182252039c88199016566b0de30c6aa02163a143427afedd12af
MD5 hash:
c3a1924684ca30ed22234ce1d9111dfc
SHA1 hash:
7347706241422758c06440fd6044ae4e042b456b
Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
SH256 hash:
4690717ac27e98b3a190721acd0c525ecb6e6c256f8a9cba4089df6700cb99a8
MD5 hash:
4f7016bf129aef9aabaf4c8af97d987f
SHA1 hash:
4cc10611dd5edee8490e4b9f190c823d32f9d9d9
Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
SH256 hash:
340007bd7cac338edd12096afa1a89a3fd0b3f27c6d28f0b972d74ada0b36d7e
MD5 hash:
10db35f615fd0a56c30646f097a7f456
SHA1 hash:
3138a447b4a9dd0fbd3282a375bb2f1d9e34dc3b
Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
SH256 hash:
b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88
MD5 hash:
fe69d8fecd835bd99a986216c352040d
SHA1 hash:
4a90ee5fd0c4afba861f4a3fee9951c75769e7a6
Link:
https://www.unpac.me/results/7dea60b1-371c-46cc-bc48-2c720d607e22/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b41c7492240c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88

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
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Rule name:Skystars_Malware_Imphash
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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 b41c7492240cb3f10463e9d1bf6dbda274cb7558e859c69b446fc76df5bf9e88

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2286568/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/312525/

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