MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df
SHA3-384 hash: f827841b5972f5e24cf35df90cbea2869fba0cb0a210169d433db20c161e7333a4461339564f4e1ed4e8638e5ccaf02b
SHA1 hash: 6794e758e48f42c93680004d2b5dda14ab4c9fcf
MD5 hash: ce436d249b3dc5f16b9e84b3d44ec26d
humanhash: angel-virginia-arkansas-gee
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:650'752 bytes
First seen:2023-12-04 09:07:52 UTC
Last seen:2023-12-04 10:33:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:6x45+po269GxhDkANw4cyzilmTpqLzj4y0QS17UMlPCMgFgZ:F+pJ69WDpQSA4y
Threatray 568 similar samples on MalwareBazaar
TLSH T179D4E19D7250B2DFC817CDB6C9A82CA4E650647B531BE313A05311ADEA0EAE7DF051F2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 23ccccfc3c6c2c17 (12 x Formbook, 8 x AgentTesla, 5 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
292
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/462272/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.3269.22206.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/656d96fc16b73d8637260f9b/reports/ec382600-c155-495e-9c03-892abb8a497d/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df
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/3adddde7-00cd-4c27-b1ba-591ab024bf3c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1352979
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found 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
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 virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1352979 Sample: file.exe Startdate: 04/12/2023 Architecture: WINDOWS Score: 100 34 www.berita138brand.xyz 2->34 36 www.todoaudiolibros.online 2->36 38 15 other IPs or domains 2->38 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 50 9 other signatures 2->50 11 file.exe 2 2->11         started        signatures3 48 Performs DNS queries to domains with low reputation 34->48 process4 signatures5 58 Detected unpacking (changes PE section rights) 11->58 60 Detected unpacking (overwrites its own PE header) 11->60 62 Tries to detect virtualization through RDTSC time measurements 11->62 64 Injects a PE file into a foreign processes 11->64 14 file.exe 11->14         started        process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 Queues an APC in another process (thread injection) 14->72 17 explorer.exe 40 1 14->17 injected process8 dnsIp9 28 s-535159.gotocdn.com 103.96.148.46, 49734, 80 WEST263GO-HKWest263InternationalLimitedHK China 17->28 30 todoaudiolibros.online 84.32.84.32, 49727, 80 NTT-LT-ASLT Lithuania 17->30 32 6 other IPs or domains 17->32 40 System process connects to network (likely due to code injection or exploit) 17->40 21 control.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 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/33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-12-04 09:08:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
10 of 23 (43.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gp7tgsql6lukd2ez75d2q7w7gdtor27qlttpywq5nz5hww6wolpq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2a0883f81fa813b247ae1243050bc720926599286a213725a86a50ced42c0ead
Formbook
340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df
Formbook
a0ddd3971519b62fc66cc48e16f02440dd9df5ed4c1e1ff5abb3836b8551b52d
Formbook
d181fed18a646621f4f6441afbce6f32afbe5fb13cd3923b9c4d03a485b30eaa
Formbook
f8b5dcd1c184f861edfc7c29db1dd1ad495fdbcb3748f03c0880db211c3085dc
Formbook
+ 558 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:uh23 rat spyware stealer trojan
Link:
https://tria.ge/reports/231204-k3wn4aaa91/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
692e04be13ed65ac3644f244585cd4f2a96453beb71095a3f3e99b03e3733c69
MD5 hash:
59e894fc4208d84dfe99740f40f15a6a
SHA1 hash:
00645401d717ec67f0f3edae06c0ff41c48e187b
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/98816fc5-3ad0-4029-9c51-59e0ecdd5921/
Parent samples :
e6ad0e54bdd3ceb24a7139747c35bb9e9b2d5a8208b677562b87be8745033d7d
10883d2d817a21862f9068a7fbaae0d363e16e64d291a291925ba002e761eff6
33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df
cc3e1fee438ef0fe104afcc8ac66f930074302f67f1b99995b2d526575ddc098
58cf43979e8150866dfe602dee0b54283750164dc9b176996765e4d84637d689
c8d59b8da8897c734505e6464da594ecfc745ca1ee00a8d0c536646baee2f84d
9d833b4a66beca22dcee2a030ffa0ff1a9c72eba3f9ee50eb412f56806915f87
SH256 hash:
797e57bd74a68f7b4808a213f5c319ee4f4b023bc73088175d4393dfee9fe329
MD5 hash:
3c927935fbd608e7628cc2c5ad7d52fd
SHA1 hash:
ee0c880c0614ac960fd641f7d479233584aed1d8
Link:
https://www.unpac.me/results/98816fc5-3ad0-4029-9c51-59e0ecdd5921/
SH256 hash:
1b1aa16027e363fbb7c1725e3617524225c6014cceaccce8321d1f140821fdeb
MD5 hash:
92ed7332f151a80b0e09d9c0f3d5340c
SHA1 hash:
ebb8b3950bac81687008a03cb0182a0e8d218f38
Link:
https://www.unpac.me/results/98816fc5-3ad0-4029-9c51-59e0ecdd5921/
SH256 hash:
2340d070fc92470913072bab9087c4ed5675a0e8d4c61145553a8aad52a16994
MD5 hash:
0cf35c9e685b649b084dc5d385aaa62b
SHA1 hash:
06ab63a9a595c6ef82206c7388ff6aee4b1adb51
Link:
https://www.unpac.me/results/98816fc5-3ad0-4029-9c51-59e0ecdd5921/
SH256 hash:
33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df
MD5 hash:
ce436d249b3dc5f16b9e84b3d44ec26d
SHA1 hash:
6794e758e48f42c93680004d2b5dda14ab4c9fcf
Link:
https://www.unpac.me/results/98816fc5-3ad0-4029-9c51-59e0ecdd5921/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/33ff334a0bf2/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/33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df

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
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
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 33ff334a0bf2e8a1e899ff47a87edf30e6e8ebf05ce6fc5a1d6e7a7b5bd672df

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462272/

Comments