MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2. 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: 18


Intelligence 18 IOCs YARA 1 File information Comments
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SHA256 hash: b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2
SHA3-384 hash: a39953efeb69247202fb522f17dfa4c7da4dcb20e35496c54a569f38e790da0a07dab7933df118ab4a9a6380191a8c5b
SHA1 hash: fe54a433d9d63bfacbf2bd3dd5021ac9562ac418
MD5 hash: 185e053b6ee882ae73d06afec196f18f
humanhash: magnesium-robin-oklahoma-bakerloo
File name:Dekont.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:242'699 bytes
First seen:2023-05-09 16:56:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:/Ya6Mc5LW5BQ557Rmn6Pnuc5612tyxsdVR:/YiAW5B81DnzrtXR
Threatray 2'874 similar samples on MalwareBazaar
TLSH T181341224EF30C4F3E45343B45F3A5FA69AF7F40529A8D7478B549E0E7A62484EA0D320
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook geo TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
273
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Dekont.exe
Verdict:
Malicious activity
Analysis date:
2023-05-09 16:56:30 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/8460c6fe-2462-4d41-827a-1b17f65fcca9

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/387910/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/83226/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/645a7b24d054a0b0ef84514f/reports/b8b42bd7-1262-4386-bedf-d8333cba27fe/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2
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/d931a1a9-107d-48e2-bbc5-e84a026ef3f2
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1229437
Signature
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Machine Learning detection for dropped file
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 dropped file
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
Sample uses string decryption to hide its real strings
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 862419 Sample: Dekont.exe Startdate: 09/05/2023 Architecture: WINDOWS Score: 100 31 www.chartx.xyz 2->31 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for dropped file 2->43 45 10 other signatures 2->45 11 Dekont.exe 19 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\drxowkp.dll, PE32 11->29 dropped 55 Detected unpacking (changes PE section rights) 11->55 57 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 11->57 59 Maps a DLL or memory area into another process 11->59 61 Tries to detect virtualization through RDTSC time measurements 11->61 15 Dekont.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 1 15->18 injected process9 dnsIp10 33 www.garentaileonlinearac.net 18->33 35 www.cvhuuj.live 18->35 37 www.atroitskiy.ru 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 svchost.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-05-09 15:54:14 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wxnyoms2lm4geahsg6ooikrxdmt672bdz5zg24d3u6jero7mwlza._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
33e3b47eae5dd2c0931b64dab1fa56868276ee8cadf3cda23e4310e7e640703f
Formbook
3c081233757b9e6b0c3b74db106fb9778b2bcef8a708fc642f3e2c4e6eb74410
Formbook
43440434172d5730884fa5f0ae4f7ae73c4815e74618d18bc405d18dd325fed4
Formbook
4431648599d5c8d9ed6324d5cfaccf83daaecf91b9637b1cf308b8004ca43757
Formbook
4c817012f18358469290ab2d534a7670dbd7769499cfafa327b5f7afca8c3552
Formbook
8ac965774bef91af710f65245ac06f9f5de2fea89c1e782c8af0f8f3c2139d7d
Formbook
a1f1dfe6d2c7d5010bd2d3eef64f83695307f83e12f05aa89762113fd13a9456
Formbook
ab0b1f056d4030a9988c12df83064169e07f5cd2a9e7c51833ff057d2d8eedf3
Formbook
afbccae6537d0602edbc99ef03ec8b89ec23df241079f949c0b8a0aa6f9aa8f0
Formbook
+ 2'864 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a04y rat spyware stealer trojan
Link:
https://tria.ge/reports/230509-vfn1vaeh6x/
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
Unpacked files
SH256 hash:
ea0409e2f37b820b4eaec8db2a7019cf71badafa4c6e25e8d9742883396b9f03
MD5 hash:
19b97a69cc83019bd6604487b0cc4472
SHA1 hash:
e0bc571b26d7990c3817325587c1863a85fb0a73
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/372691d4-0def-48ac-800b-9d72c79c6ea7/
Parent samples :
b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2
5d83a43d87b1e3b3d0464602efc817391577b18b11f97230d51214f67627b4be
SH256 hash:
43d439a5839bb004e54174147cd11642d973ca9bcaf23a3bb6cb6126b7a2d8a6
MD5 hash:
9c07a0e12ab60cfd93efe1bf77e9decc
SHA1 hash:
5197cc4134684082111f5ebed909e07bc94b2e62
Link:
https://www.unpac.me/results/372691d4-0def-48ac-800b-9d72c79c6ea7/
SH256 hash:
b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2
MD5 hash:
185e053b6ee882ae73d06afec196f18f
SHA1 hash:
fe54a433d9d63bfacbf2bd3dd5021ac9562ac418
Link:
https://www.unpac.me/results/372691d4-0def-48ac-800b-9d72c79c6ea7/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b5db87325a5b/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/b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe b5db87325a5b386200f2379ce42a371b27efe823cf726d707ba79248bbecb2f2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/387910/

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