MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b5733ced58258c63aeb893b78e80ef9b7171b8188b69a9d2ae19e76abbb9f1b. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b5733ced58258c63aeb893b78e80ef9b7171b8188b69a9d2ae19e76abbb9f1b
SHA3-384 hash: 18c8725b0b903acffc5fdb59d7ab26dcc5073a97c15584b68b397ce13c12d17a4125ff04256eee2820b492e7085d10f3
SHA1 hash: 9209d8fe5a1c6ca212a1f249addc94fb253b8142
MD5 hash: 093402d3b822ae3e3da71c362a6b6be0
humanhash: fix-alpha-alaska-quiet
File name:SecuriteInfo.com.W32.MSIL_Kryptik.EOQ.genEldorado.30986.13091
Download: download sample
Signature Formbook
Create hunting rule
File size:1'880'576 bytes
First seen:2022-04-22 09:50:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:uuCrmGVi5pGDZY+OOMBESGOdHBzb7uNaWTSHB1CskA5:bCr3iHGGNvBE/OSaDnrf
Threatray 14'646 similar samples on MalwareBazaar
TLSH T159958D32A3E64E24E6FB333854B90A638275FE425B65D39F827960AD14E7750CF12363
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 851a98b4909864c4 (58 x AgentTesla, 43 x Formbook, 34 x RedLineStealer)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/265731/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.EOQ.genEldorado.30986.13091.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed pos remote.exe update.exe
Link:
https://www.filescan.io/uploads/62627b87c7f6e2c5442cfc8d/reports/6700ce61-7a6a-46c8-9ec7-020f8c740f94/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/7e22e6f2-905c-437d-baf3-74d26436b183
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/981288
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Performs DNS queries to domains with low reputation
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 613775 Sample: SecuriteInfo.com.W32.MSIL_K... Startdate: 22/04/2022 Architecture: WINDOWS Score: 100 33 www.vvv-btk.info 2->33 35 www.texasinjurytriallawyers.com 2->35 37 14 other IPs or domains 2->37 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Multi AV Scanner detection for domain / URL 2->47 49 Found malware configuration 2->49 51 13 other signatures 2->51 11 SecuriteInfo.com.W32.MSIL_Kryptik.EOQ.genEldorado.30986.exe 3 2->11         started        signatures3 process4 file5 31 SecuriteInfo.com.W...orado.30986.exe.log, ASCII 11->31 dropped 61 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 11->61 15 tasklist.exe 11->15         started        18 WerFaultSecure.exe 11->18         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 2 other signatures 15->69 20 explorer.exe 15->20 injected process9 dnsIp10 39 peacefmradio.com 146.71.86.187, 49773, 80 SHOCK-1US United States 20->39 41 www.khazafna.com 151.101.66.199, 49815, 80 FASTLYUS United States 20->41 43 6 other IPs or domains 20->43 53 System process connects to network (likely due to code injection or exploit) 20->53 24 chkdsk.exe 20->24         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2b5733ced58258c63aeb893b78e80ef9b7171b8188b69a9d2ae19e76abbb9f1b/
Threat name:
ByteCode-MSIL.Hacktool.Aikaantivm
Create hunting rule
Status:
Malicious
First seen:
2022-04-22 06:25:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
13 of 26 (50.00%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fnlthtwvqjmmmoxlre5xr2ao7g3rog4brc3jvhjk4gphnk53t4nq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
42c22b1ceff07541d20717e8b9fea63a1418dc92917303cdcf48cce246a7d29f
Formbook
49f94b3fbaf875cb2c223cdee59cfdedf4b2b937fba4a473cf2e4f767b44cb4c
Formbook
502303edd5a9de57b3667146e84f15fc4957242ca2ef8f75f5e503946c452ee2
Formbook
67435ee3c6fd3d272c004256f34020df37fb93fd33c18720053b9d2c1bb19b67
Formbook
8e2fa281cc72512de1fc53eb27a9c04a524ce87c3cdf5932931ea3dc463a459a
Formbook
8e53da1978db8519e24fc5d444c894ccb7751c8c701c192c513413debcda4e50
Formbook
97e3431b489d64fb200c178334d0229cea2495e7f01856ac8571e4f085636b73
Formbook
a47b7491399bb9e706cadd4d755b28ac9572e5859418409cef76dcd339a82665
Formbook
f6a6cef63fe5f3fea0a043c2b938e68b656831a33888029f7d9225d24819dcd0
Formbook
+ 14'636 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:i9ng evasion loader rat suricata
Link:
https://tria.ge/reports/220422-lw16nsgcfl/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/343cbd49-6e29-4221-8b3b-fdeb65c3d004/
SH256 hash:
fdb7151b6ef96bae766c0698e0aaf6a6b85c98e85107cc5b821e99f38848a23c
MD5 hash:
1fbf8da52db49c1b881ebc153a23d334
SHA1 hash:
001fdcc80c4bf91bc750f8de69408b36e4a2e7ee
Link:
https://www.unpac.me/results/343cbd49-6e29-4221-8b3b-fdeb65c3d004/
SH256 hash:
2b5733ced58258c63aeb893b78e80ef9b7171b8188b69a9d2ae19e76abbb9f1b
MD5 hash:
093402d3b822ae3e3da71c362a6b6be0
SHA1 hash:
9209d8fe5a1c6ca212a1f249addc94fb253b8142
Link:
https://www.unpac.me/results/343cbd49-6e29-4221-8b3b-fdeb65c3d004/
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/2b5733ced58258c63aeb893b78e80ef9b7171b8188b69a9d2ae19e76abbb9f1b

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/265731/

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