MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2
SHA3-384 hash: 3869aa9ff5938f05b399416d4196d14438d87415c2325d710020398121a2add525f44664975cc07ccc9bc027c37b48d3
SHA1 hash: 3bb004ac749d37890389e170db154d8173781e47
MD5 hash: e1729e538f54000779cbe60ba0a5a14e
humanhash: red-charlie-oxygen-fifteen
File name:General Catalogue.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:907'264 bytes
First seen:2022-08-02 20:47:21 UTC
Last seen:2022-08-02 22:22:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:w8IuOmChLuyAHk2iNuP+2FUd1L71+airEOyeqbvNvvS6:GhLuyyk1kP+jf1eQeiFC6
TLSH T19B159C2324FDA2E5F02C2E77879057645AB0AD02A235E157D95B3BC7C6F3963CD029E2
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 31b09c969698b033 (55 x AgentTesla, 27 x AveMariaRAT, 15 x Formbook)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
400
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
General Catalogue.PDF.exe
Verdict:
Malicious activity
Analysis date:
2022-08-03 05:47:17 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/cb0ed779-a452-48b1-8727-708d3cc27be0

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/296023/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Launching a process
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e98d89d40ca3666159fed4/reports/f2261d17-b64b-4422-8c29-023458e0493b/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e7a472e1-d4dc-4a24-a1f0-a5223cec7062
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1045245
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large strings
C2 URLs / IPs found in 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)
Modifies the prolog of user mode functions (user mode inline hooks)
Performs DNS queries to domains with low reputation
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 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)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 677739 Sample: General Catalogue.PDF.exe Startdate: 02/08/2022 Architecture: WINDOWS Score: 100 38 www.slpsmv.xyz 2->38 46 Malicious sample detected (through community Yara rule) 2->46 48 Yara detected AntiVM3 2->48 50 Yara detected FormBook 2->50 52 9 other signatures 2->52 11 General Catalogue.PDF.exe 3 2->11         started        signatures3 process4 file5 36 C:\Users\...behaviorgrapheneral Catalogue.PDF.exe.log, ASCII 11->36 dropped 56 Writes to foreign memory regions 11->56 58 Injects a PE file into a foreign processes 11->58 15 RegSvcs.exe 11->15         started        18 RegSvcs.exe 11->18         started        20 backgroundTaskHost.exe 171 113 11->20         started        23 RegSvcs.exe 11->23         started        signatures6 process7 dnsIp8 66 Modifies the context of a thread in another process (thread injection) 15->66 68 Maps a DLL or memory area into another process 15->68 70 Sample uses process hollowing technique 15->70 72 Queues an APC in another process (thread injection) 15->72 25 explorer.exe 15->25 injected 74 Tries to detect virtualization through RDTSC time measurements 18->74 40 192.168.2.1 unknown unknown 20->40 signatures9 process10 dnsIp11 42 watch-episodes.site 64.190.62.22, 49779, 80 NBS11696US United States 25->42 44 www.watch-episodes.site 25->44 54 System process connects to network (likely due to code injection or exploit) 25->54 29 explorer.exe 25->29         started        signatures12 process13 signatures14 60 Modifies the context of a thread in another process (thread injection) 29->60 62 Maps a DLL or memory area into another process 29->62 64 Tries to detect virtualization through RDTSC time measurements 29->64 32 cmd.exe 1 29->32         started        process15 process16 34 conhost.exe 32->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-02 20:46:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
31
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2fvvxdnqlkpkavba4mgtevtdxdw557ar5mebxdexq23pfgl3c3ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o85a rat spyware stealer trojan
Link:
https://tria.ge/reports/220802-zlerksbag5/
Behaviour
Gathers network information
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
Formbook payload
Formbook
Unpacked files
SH256 hash:
3b24bbfee3565a866f8ca1c97c522f89f639db78d100a1b4624ae4c7f0e20f85
MD5 hash:
e899386905a6a4bbf58dba3be151fd35
SHA1 hash:
a047e3e077d60f29b0a97029afa5025c4aa05e5d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/d9eadb05-9378-4f6c-9e82-a1d3aa5ef674/
Parent samples :
ae6fafd2214768aeacea617af4466426523e3bea6370f891820b5332d96f6523
df972d6bc3fe91c8008139f05460ca78aebb5b531f9dd26731f6b7652c73ee90
d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2
e30fc87ce3075c2d3cb6abfb9a3f1be26d8285b3aab8143787e0dcf976508af4
5be7e2a77b35c4a4b902b3d391f6b06f53595e759d322638641977a4a45a4b51
46d78943f26576a230170afb9b13179cb7e2aac34c3f9a7cd023192f7fcf9891
2101f7baea455a682ff9298a4d0d19c52f090f31ef2446927adfa9aa184d7f39
7b2071ebb9ae9a7dca9e456644d168cddbe283a4ee8d0853f9be86a064232865
514b1a8e0185810e3da1172ea43c787bdef254b38d926842a4fe7a5061eeeeb9
ac350e4d5fcb2fd0087addb5f00a8a0d73ca19f818ab1585f819ed25de47e60c
9db7ece2184b1d22f94206fd18d539e2da6bb438e02af04794a3fcb0b483d7df
7db8c14f992f67da263487c6b28851387a566b91fb886f5bad590ac4a93ca3b5
beb7b84d602883136adee892e73345e7272b14902cd7b7eb83b8df48220cb811
1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc
SH256 hash:
5e97ccd8dafcb36b3cb772f6a2fd425abcf221ab9ea1930e8c2618c95332f2c6
MD5 hash:
01800f6b045def8d90c649842f56d752
SHA1 hash:
f8434a4636d0772d01aac44bb3f9753a41f01d34
Link:
https://www.unpac.me/results/d9eadb05-9378-4f6c-9e82-a1d3aa5ef674/
SH256 hash:
e995f111a6b321c93ed05e4ed9ab40a144f7a37d79e295bc8a7408eae69ffd4f
MD5 hash:
fa6667a4c62bf84038119434dc26816c
SHA1 hash:
f59e5a990cb4a5239b2550ec9677292761fa9d3c
Link:
https://www.unpac.me/results/d9eadb05-9378-4f6c-9e82-a1d3aa5ef674/
SH256 hash:
d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2
MD5 hash:
e1729e538f54000779cbe60ba0a5a14e
SHA1 hash:
3bb004ac749d37890389e170db154d8173781e47
Link:
https://www.unpac.me/results/d9eadb05-9378-4f6c-9e82-a1d3aa5ef674/
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/d16b5b8db05a9ea05420e30d325663b8eddefc11eb081b8c9786b6f2997b16e2

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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/296023/

Comments