MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9
SHA3-384 hash: c2afc41aa901aec3d66af977d1115bb3c78f78fb7a0f4c8e90ee862e884138d62028bf7dcceaf78e05bcaa77f1889aaa
SHA1 hash: bfbcd1d44d6905c92bc131c758aef39f0d558857
MD5 hash: 54d4930087b5130ebf049b466980bfc7
humanhash: nuts-twelve-single-jig
File name:obizx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:929'280 bytes
First seen:2022-08-26 13:19:23 UTC
Last seen:2022-08-26 13:35:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:Clu8yZkrnwHSHe+IYPM3pNTkJq7RcAmiKQUCUJrFZ89snPI/nvJJcqiK6nRAOhrN:CgMrnaMk7R3miKXYcqi/h7wWsDcWI
TLSH T14715024376584E17D7FA82B1EC21D4B44BB13A6EABB3C6B83C6134EE3870705485676B
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 6670596f4f4e0d0a (34 x Loki, 25 x AgentTesla, 21 x SnakeKeylogger)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
409
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
obizx.exe
Verdict:
Malicious activity
Analysis date:
2022-08-26 13:21:28 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/8a0db5dc-1d51-44ac-b5b9-d96911733c0b

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/301412/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1429.24900.1478.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
67%
Tags:
anti-vm packed remcos
Link:
https://www.filescan.io/uploads/6308c8fcfba5fadd53817ffa/reports/7e25fb56-6eda-4c0f-aca9-ab301314d05b/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d2a6650b-4982-4f17-a66b-634ce6513dc2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1058423
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Deletes itself after installation
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)
Multi AV Scanner detection for domain / URL
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)
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 690940 Sample: obizx.exe Startdate: 26/08/2022 Architecture: WINDOWS Score: 100 27 www.saudalasfoor.com 2->27 29 saudalasfoor.com 2->29 37 Snort IDS alert for network traffic 2->37 39 Multi AV Scanner detection for domain / URL 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 8 other signatures 2->43 9 obizx.exe 3 2->9         started        signatures3 process4 file5 25 C:\Users\user\AppData\Local\...\obizx.exe.log, ASCII 9->25 dropped 57 Injects a PE file into a foreign processes 9->57 13 obizx.exe 9->13         started        16 obizx.exe 9->16         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 13->59 61 Maps a DLL or memory area into another process 13->61 63 Sample uses process hollowing technique 13->63 65 Queues an APC in another process (thread injection) 13->65 18 explorer.exe 13->18 injected process9 dnsIp10 31 www.tamedandframed.co.uk 81.17.18.196, 49731, 49740, 80 PLI-ASCH Switzerland 18->31 33 www.sleepcouncil.co.uk 213.171.195.105, 49753, 49757, 80 ONEANDONE-ASBrauerstrasse48DE United Kingdom 18->33 35 5 other IPs or domains 18->35 45 System process connects to network (likely due to code injection or exploit) 18->45 47 Uses ipconfig to lookup or modify the Windows network settings 18->47 22 ipconfig.exe 13 18->22         started        signatures11 process12 signatures13 49 Tries to steal Mail credentials (via file / registry access) 22->49 51 Tries to harvest and steal browser information (history, passwords, etc) 22->51 53 Deletes itself after installation 22->53 55 2 other signatures 22->55
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-26 12:54:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y5kxywyx4wawmip6gyj7y4ufcpz4y6di6rvdoqfxmjaturqjekuq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  8/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/220826-qk4jwachhn/
Behaviour
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
Checks computer location settings
Reads user/profile data of web browsers
Blocklisted process makes network request
Unpacked files
SH256 hash:
8a6b47a718c32024087ddf680f447fa92620112acb97b5e0d02a89e2b1a617f6
MD5 hash:
3addec9f1399f8159933ec60e5dc8e86
SHA1 hash:
286f2e71868d0957660ef2c932d62e17bb2e5b83
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
Parent samples :
28ef8e19f33ee91bd8cd2e0fcbc9b9cf328313c543f65aaeb116646916e99fb0
c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac
c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9
4994e7acf451ce7d8abdccb79cce806011f09bd49a811fcd2689f32a51fdee09
24dbe688a855d9f0c1db91574e24837ab537b63a2e69c8a55240b14f151e5ed2
84780665db026468f4cbe135a5f51f838688b9e208aa126620114debcbc3fa23
SH256 hash:
7e36b3580bbbc89b77acf5c55c2d33227048d2b3994f255a3722bd006fc25ab1
MD5 hash:
bcfbe3b2dbf37d72731a9aa788d8627d
SHA1 hash:
524a79a6a9761abfe5bfabbb0883106a76fdd713
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
SH256 hash:
cceee5594e2238f13f64a943286955cdfa47e172ad61638daca4f85c96fb75db
MD5 hash:
0e3d91c7594cd7fa4f0945d96dfb5335
SHA1 hash:
3dc7c6cdb6342a36354d3ea3e5b4118a45f7a8f0
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
SH256 hash:
64f01a1fa0115d548d8d30c1df0e8cff3b9451905c857546766d9b3953ce558f
MD5 hash:
ddd2eccf736699714f455d77ed7d88a7
SHA1 hash:
125b0265c0928321cba51f47cfe0b36656d6250d
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
SH256 hash:
c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9
MD5 hash:
54d4930087b5130ebf049b466980bfc7
SHA1 hash:
bfbcd1d44d6905c92bc131c758aef39f0d558857
Link:
https://www.unpac.me/results/f2af383d-0ea8-4f2f-964d-a9f99fdd3435/
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/c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/301412/
  
URLhaus
https://urlhaus.abuse.ch/url/2271081/

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