MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751. 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: 20


Intelligence 20 IOCs YARA 4 File information Comments
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SHA256 hash: 3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
SHA3-384 hash: 2d255f88c9a64a505fc95d387aff8577e95c489748f1f438112c63cd6bfe81b6ac7a1f8383aceb451d54f3f3480bcc65
SHA1 hash: 6620f89e43c92f0dfa80561d22e3283a9c85b903
MD5 hash: 0ea5e86e132b0c1c7dfe9652eb801859
humanhash: batman-quebec-london-quiet
File name:PDPUOIE76867 PDF.exe
Download: download sample
Signature Formbook
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File size:764'928 bytes
First seen:2024-09-04 11:34:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:J9H8pgcB5z9+GVQE4QvdU/57k2HKt8QO7r3Jy6RLiJRCH9ZUw+Rdu4Jfv5ccj678:f0qvQln2p9xERCHHUdRdxcioH1tU/b
TLSH T11FF4BE4D63148293E1042B75CAB9FE7902601CBC7882D7D5FEE97E6BFDA1B961832017
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 6dd2d312dbc8cc49 (94 x Formbook, 5 x AgentTesla)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
474
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PDPUOIE76867 PDF.exe
Verdict:
Malicious activity
Analysis date:
2024-09-04 11:34:37 UTC
Tags:
formbook xloader stealer
Link:
https://app.any.run/tasks/f2fe1094-8e94-4d0f-a1ca-604bbc8f35bf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.25790.25246.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d845aef3d7ccf99f8feb33
Tags:
Network Static Stealth Formbook
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
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:
formbook overlay packed
Link:
https://www.filescan.io/uploads/66d845ad01fb39ef6bbcf0d4/reports/5ae456b1-616b-4697-b4e7-395a01b5b997/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e4d2cbc1-8a61-49d9-b982-6e7220e93364
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1504045
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1504045 Sample: PDPUOIE76867   PDF.exe Startdate: 04/09/2024 Architecture: WINDOWS Score: 100 36 www.supergeoet.best 2->36 38 www.spanish-classes-76893.bond 2->38 40 9 other IPs or domains 2->40 44 Suricata IDS alerts for network traffic 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 11 other signatures 2->50 11 PDPUOIE76867   PDF.exe 3 2->11         started        signatures3 process4 file5 28 C:\Users\user\...\PDPUOIE76867   PDF.exe.log, ASCII 11->28 dropped 14 PDPUOIE76867   PDF.exe 11->14         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 2 other signatures 14->66 17 explorer.exe 64 1 14->17 injected process8 dnsIp9 30 www.spanish-classes-76893.bond 185.53.179.90, 49747, 80 TEAMINTERNET-ASDE Germany 17->30 32 www.depression-test-74287.bond 185.53.179.94, 49745, 80 TEAMINTERNET-ASDE Germany 17->32 34 4 other IPs or domains 17->34 42 System process connects to network (likely due to code injection or exploit) 17->42 21 chkdsk.exe 17->21         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 21->52 54 Maps a DLL or memory area into another process 21->54 56 Tries to detect virtualization through RDTSC time measurements 21->56 58 Switches to a custom stack to bypass stack traces 21->58 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-09-04 10:11:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hsn7gpfknkqrwhehyuhb6cxccj2ebckqrau2rgf7pwphunza25iq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:he2a discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240904-npe1za1ana/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/44458546-d411-4713-a6af-512e93d82162
Unpacked files
SH256 hash:
f921549a051b326f6d4ed173ffb1cf7f42a7425c640f891ae6f41a8e99159e01
MD5 hash:
a6f4a41a3de1225afe98389d2669eb1d
SHA1 hash:
2ebd66b8fc73b977bb7089bd07f9eb334d8167c2
Detections:
FormBook
Create hunting rule
win_formbook_g0
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win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
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Link:
https://www.unpac.me/results/c332c74f-61c9-4cef-be63-288dd9fc11e2/
Parent samples :
cc1b719f0ae40d0b53765aae8480474dbc7277428f56184d2dc94a0de5fbbf67
76ca3bedb80b3725aa6cded3b43770a23079f239afa5417d57b4b162f682c8bd
3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
3e4d309ea6393d0740a3bd93c83b208ac59b3ddf2626bb279942ac48003454de
9f67248a754e414ffb2361932c591abe39581b21a20d51ccb46db5e534a9531c
761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
SH256 hash:
0a344633866d860ad08315007a25f79f6ea5b6bce788c5351f4824eba80fe803
MD5 hash:
c17b740925980aea55a64c7fb235e8ba
SHA1 hash:
8f78dc46269f5c0c6bc6f376af8e52fd44b6f880
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
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SUSP_OBF_NET_Reactor_Indicators_Jan24
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Link:
https://www.unpac.me/results/c332c74f-61c9-4cef-be63-288dd9fc11e2/
SH256 hash:
086284125fce18e6e0112fce0cd1ea94162975a480af8a542013027e060f73c6
MD5 hash:
4d63a044deba13caf6e8c822e5ef6bfe
SHA1 hash:
1bc370c2e84d1e26257f30cac53a1002c880e97e
Link:
https://www.unpac.me/results/c332c74f-61c9-4cef-be63-288dd9fc11e2/
SH256 hash:
3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
MD5 hash:
0ea5e86e132b0c1c7dfe9652eb801859
SHA1 hash:
6620f89e43c92f0dfa80561d22e3283a9c85b903
Link:
https://www.unpac.me/results/c332c74f-61c9-4cef-be63-288dd9fc11e2/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3c9bf33caa6a/report/overview.html
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/3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751

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:NET
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Author:malware-lu
Rule name:pe_imphash
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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 3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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