MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5. 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 4 File information Comments
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SHA256 hash: 26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5
SHA3-384 hash: ae12499f2ff1154da79cf9072725d19db12432804bd2b36507a9dbc9454602ed339331143e44abde7b3007a0dd44b195
SHA1 hash: 3a35ca6c8f2f4005eb53b6ab1ce25b42db2c7dc8
MD5 hash: badaad0d93f7a39a5d788d2b072e7328
humanhash: uncle-illinois-triple-fourteen
File name:invoice copy.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:306'637 bytes
First seen:2021-11-24 10:21:57 UTC
Last seen:2021-11-25 07:01:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGifbG+tbR6Dq4jSxw/d4/GZQq7FINE/9gGUg8WjUbo/ZMC:rZbUq9dg7Z9gGv
Threatray 11'660 similar samples on MalwareBazaar
TLSH T15064230762C494FBE5110A3AC473F96DFA7A504D45A2C8F3AFB43EBF64203A347525A6
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
136
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice copy.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-11-24 10:23:21 UTC
Tags:
installer trojan formbook stealer
Link:
https://app.any.run/tasks/9422e52e-6be9-43c9-999c-91a64d666e19

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Trojan.GenericKDZ.80642.17518.21187.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/619e124c02c80febc2a803a6/reports/18108b6a-71f7-4e35-86b2-6894103d38ce/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:
Unknown
Link:
https://analyze.intezer.com/analyses/07116597-c266-4f2d-a4a2-e29f916ae84d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/895272
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicious Svchost Process
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 virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 527750 Sample: invoice copy.pdf.exe Startdate: 24/11/2021 Architecture: WINDOWS Score: 100 31 www.apecitytoken.com 2->31 33 apecitytoken.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 11 other signatures 2->47 11 invoice copy.pdf.exe 17 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\afhgvaxgp.dll, PE32 11->29 dropped 59 Injects a PE file into a foreign processes 11->59 15 invoice copy.pdf.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.zizzoo.site 18->35 37 www.liveitliveit.com 18->37 39 liveitliveit.com 34.102.136.180, 49832, 80 GOOGLEUS United States 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 svchost.exe 18->22         started        signatures11 process12 signatures13 51 Self deletion via cmd delete 22->51 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2021-11-24 08:44:27 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=e2zez7r3bo4ewjx4qphgrg3uokfmmhzshelxfxghn2vqjtdqik2q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2f25dc177ece107801390643c83b2cd626653f102df7f6ea5dc767e2b8d48c08
Formbook
425d46c51bf681a37b1f34a602ebf6c7f571060bf698e70f2fd495169f804f92
Formbook
4cc5a0fb10d6235a197da2d08df9af6afae59ceaffb0c7054cfb087eb5c039b6
Formbook
5aad7a3f3d55c4741d8a79b59e0e9f922d375adab9f998ababc03a88a2feb27c
Formbook
5dad6b254fb40bb4c090f5048e07da656821a4b6b163c6548287c3d91dcfda45
Formbook
7f15af6ad30b84b5047a47d92a2319b1043dc00576d80a5cae1e8a23fcb97854
Formbook
8ddc14ac94185fbe27b3764fb4e24fd8c25626a465074e8f640955a6f3409c08
Formbook
+ 11'650 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:f2t3 rat spyware stealer trojan
Link:
https://tria.ge/reports/211124-md891afef7/
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.allnestek.com/f2t3/
Unpacked files
SH256 hash:
26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5
MD5 hash:
badaad0d93f7a39a5d788d2b072e7328
SHA1 hash:
3a35ca6c8f2f4005eb53b6ab1ce25b42db2c7dc8
Link:
https://www.unpac.me/results/45c94936-1c53-4b34-9718-e1ac653c1446/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5

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:crime_win32_ransom_avaddon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
Rule name:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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.

Malspam

Formbook

Executable exe 26b24cfe3b0bb84b26fc83ce689b74728ac61f32391772dcc76eab04cc7042b5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/208905/

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