MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a
SHA3-384 hash: dd518850365c22f368ce223239df214c54d67da26250973cc5348c665f9f59e723cfe17aea9c7d9ec21bf1ce568c6c76
SHA1 hash: b642754863eeac32589e72bf658ac51b14490476
MD5 hash: ac71c0795e22346ae4541aace307bc42
humanhash: delta-three-lithium-kansas
File name:RFQ1.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:922'624 bytes
First seen:2022-05-24 00:53:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:+2iN4d+0/+oM3I/5jgRco2btl1KwzvivOP5Anmr1iCk9U/hXy75SX/XynhR5eeuw:+1dYRMLRczDiv4AmBTkmJXwu/yhCbAf
Threatray 16'549 similar samples on MalwareBazaar
TLSH T13615022076E5AB09EDBE8BF04430915027B2BD2A74A1E61F1D96B8CE3D35B429750F73
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)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ1.PDF.zip
Verdict:
Suspicious activity
Analysis date:
2022-05-23 23:33:50 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c2f040df-76b0-4919-99d9-7b499b954a46

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/273903/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed wacatac
Link:
https://www.filescan.io/uploads/628c2cc3206e0816183a758c/reports/3f337132-455e-44b7-a0f8-1c9f719794e1/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/31d9e229-ec44-4177-a8a2-80f30bc4de09
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1000298
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 632794 Sample: RFQ1.PDF.exe Startdate: 24/05/2022 Architecture: WINDOWS Score: 100 37 www.kalasrijan.online 2->37 45 Snort IDS alert for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 10 other signatures 2->51 11 RFQ1.PDF.exe 3 2->11         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\RFQ1.PDF.exe.log, ASCII 11->35 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 RFQ1.PDF.exe 11->15         started        18 RFQ1.PDF.exe 11->18         started        20 RFQ1.PDF.exe 11->20         started        22 RFQ1.PDF.exe 11->22         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 Queues an APC in another process (thread injection) 15->75 24 explorer.exe 15->24 injected process9 dnsIp10 39 www.jinghongly.com 24->39 41 www.918oom.com 156.234.171.94, 49840, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 24->41 43 9 other IPs or domains 24->43 53 System process connects to network (likely due to code injection or exploit) 24->53 55 Performs DNS queries to domains with low reputation 24->55 28 control.exe 24->28         started        signatures11 process12 signatures13 61 Self deletion via cmd delete 28->61 63 Modifies the context of a thread in another process (thread injection) 28->63 65 Maps a DLL or memory area into another process 28->65 67 Tries to detect virtualization through RDTSC time measurements 28->67 31 cmd.exe 1 28->31         started        process14 process15 33 conhost.exe 31->33         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-23 16:07:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
58
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zmwtzurbejpgovmezoflifnyk3egbyadya7ubd5fhggfckshzgfa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
20270f15d9070f9c2b1d22f0bf2f77ca5ca3dbcf6ccc148b8383a947eb6ebcd5
Formbook
581cd8671e414c5a4aad5d5874713e6ddbbb0c342e73493e28e59c86ed713ff8
Formbook
5f9e348e3e48670f658701a635bd7d463202a6c6699bc42c632b1a10c905423c
Formbook
abd704dcd33af5d9f679485aec1a95cc2b994a084348c5e6145d99f7f7c2c2b3
Formbook
b8d2156946bcfe52c373195328252483b1bb3edb9e54de58ae6a7fe679a38bca
Formbook
bbf76a25feb60b000b42552adce5f72d871a82d6c6ed3bb72a7f8d94c8886f4d
Formbook
bcf37cdec10976971f5c6523814fc48cdab566fac024ce7adb58a165932ec80c
Formbook
c7fbbdd84572a117d47a54168e71b8bd86f0c70198468486f6c3a040e9ecc310
Formbook
d28ec863f551e43cf222a709ffea536ae6ab72833ede819c28db0dc91f50f024
Formbook
db8077047dd69f232e9318ca7b5c6fdbbd012390453f0be9aaf2bffe4981bb94
Formbook
+ 16'539 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:heqa loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220524-a87y7sage9/
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
5c2aabda88477a202f53c20cc91650e30d91faf44f0d2891a3f2b90ddb8d0ca9
MD5 hash:
5a7bae48076b47cc83ef2ed4e34408c6
SHA1 hash:
dbd68d21a3d270db3ae79f15d17952776c29fbd3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
Parent samples :
cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a
7b4e5aa55cbdd7022d83fb2a9b0f84744ad992fcee7633ad0e109197ebe15de7
43963e1c6c61b149cecadcf3d653c197836f104e2396a174ff0cfae18f041ace
SH256 hash:
fdd10fb67e6276b3d848c92d4686f56b2ecbea1d629795a241ca6306a2f62d55
MD5 hash:
f20fd214bbda1a459a3eb415eec86017
SHA1 hash:
c658f61e4f308a69a4509649439814166c655e84
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
SH256 hash:
3ccf62991ac8ae2d178e665d6718c974ebe45e4c3864c274ec8284f7900139d1
MD5 hash:
73cdcd73736f225bfe54789b52b1e904
SHA1 hash:
c65832ca96467c761ec6b2f31a8c83471e97fb45
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
SH256 hash:
e80381570b94022d08a3e665a34c67d17f315065d2419ac19db16e41b34e0e07
MD5 hash:
a02230fb180622248627a5de77777129
SHA1 hash:
6cddced6258c3bd642248ea4c39032909b8af398
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
SH256 hash:
0b1c11d5537f8300487e8a913097ca2c0666b338b10488699e2146e8ded327ce
MD5 hash:
604d4c4b0c9e6e67f773a92fc9b5fc5b
SHA1 hash:
0ed561a129fe336c2f408fb934b9a6e689d06980
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
SH256 hash:
cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a
MD5 hash:
ac71c0795e22346ae4541aace307bc42
SHA1 hash:
b642754863eeac32589e72bf658ac51b14490476
Link:
https://www.unpac.me/results/2d42a383-70b8-4488-9612-4750fdb12e19/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cb2d3cd22122/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a

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.

Malspam

Formbook

Executable exe cb2d3cd221225e675584cb8ab415b856c860e003c03f408fa5398c512a47c98a

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/273903/

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