MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3. 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 11 File information Comments
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SHA256 hash: b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3
SHA3-384 hash: 5f8f7284d3d009c35c3322391d5538518ac3a13f49c33fbbef3a2305591b1cbdc2d1c0d15ce0ec82a03f3492de0e6cce
SHA1 hash: 9bcf4ead9cd648628a47758581608c557755cb2b
MD5 hash: 4566496ba071dd2a58b51e15899bb557
humanhash: muppet-papa-potato-california
File name:SecuriteInfo.com.Variant.Cerbu.145899.28779.26140
Download: download sample
Signature Formbook
Create hunting rule
File size:465'408 bytes
First seen:2022-06-28 13:58:44 UTC
Last seen:2022-06-28 14:42:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:eBWMbZ9gOSK2BKfaUi/dV7Yotj0JwRGWbpLioBrQkfagZqaH2PNGrxifvd:GWMf00faUOdVMoPRbbgoXniNC0fvd
TLSH T1C8A45E2C7A433AE6FC0E9034998D2A04BB7E0F3B6240AD81D7DB29DB878F5557C55C88
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon aa38ce868282b882 (110 x Adware.Generic, 6 x CoinMiner, 5 x Formbook)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
247
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/283952/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62bb0927a17f249ae3e39836/reports/d72d11a9-0b12-4a38-bc89-4a1c65e1775f/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/04e343cb-83b4-4087-a711-6d633f36e7b1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1021253
Signature
Allocates memory in foreign processes
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in 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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 653749 Sample: SecuriteInfo.com.Variant.Ce... Startdate: 28/06/2022 Architecture: WINDOWS Score: 100 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 Yara detected FormBook 2->44 46 4 other signatures 2->46 9 SecuriteInfo.com.Variant.Cerbu.145899.28779.exe 1 2->9         started        process3 file4 26 SecuriteInfo.com.V...45899.28779.exe.log, ASCII 9->26 dropped 48 Writes to foreign memory regions 9->48 50 Allocates memory in foreign processes 9->50 52 Injects a PE file into a foreign processes 9->52 13 vbc.exe 9->13         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 13->54 56 Maps a DLL or memory area into another process 13->56 58 Sample uses process hollowing technique 13->58 60 2 other signatures 13->60 16 mstsc.exe 13->16         started        19 explorer.exe 13->19 injected process8 dnsIp9 32 Modifies the context of a thread in another process (thread injection) 16->32 34 Maps a DLL or memory area into another process 16->34 36 Tries to detect virtualization through RDTSC time measurements 16->36 22 cmd.exe 1 16->22         started        28 www.orange-assistance.com 19->28 30 www.citi-active-reports02a.com 19->30 38 System process connects to network (likely due to code injection or exploit) 19->38 signatures10 process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-28 12:25:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
27
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wjt5yltjtpx26zzbhll2a737ub7x3glhn5w5dhm3iibav4khvljq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:al36 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220628-radfdahgfq/
Behaviour
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
Uses the VBS compiler for execution
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
64dbd47ecceda51326c984d2cf7db4189237b69aa2ecee29dc23d7358a931075
MD5 hash:
a60c5373d8ecec62ab559740f3e550bc
SHA1 hash:
8bf687e67565ec6b651720ffb7ace3c57e7be91a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/110d0621-0eae-48e7-af9c-b0c2340ac68d/
Parent samples :
cbb02344c1b88d252b80ef02e61a171b845d7bd26cd0b8e5d048ea6561e4269a
b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3
e12d2df72e42f39e30b66d4bbe6cf27e786bf6d17c227954a462f91bee0275b5
aa5311c24ad72ce3b4c6d6529d8b15ceb8e12399ee04389d6b3aea4ac3b241b1
c9f25a48b6617a8dd5936c04dabb1e260bc46dc2284bb228885755d3ec7622bf
e7bea1bbe455c12e97ee672e6fd27a0222a5eab837fbce48845c22ab3d6bfbba
SH256 hash:
b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3
MD5 hash:
4566496ba071dd2a58b51e15899bb557
SHA1 hash:
9bcf4ead9cd648628a47758581608c557755cb2b
Link:
https://www.unpac.me/results/110d0621-0eae-48e7-af9c-b0c2340ac68d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b267dc2e699b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/b267dc2e699befaf67213ad7a07f7fa07f7d99676f6dd19d9b42020af147aad3

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:INDICATOR_EXE_Packed_Babel
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Babel
Rule name:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_Goliath
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Goliath
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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/283952/

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