MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712
SHA3-384 hash: 3e29c5e7462f8b17b555bb3c512043ae0e83aa855a5b20c8a613cb2d4a588dd56d1224ae81477496e430700abcd59f6c
SHA1 hash: f28cc60cb2b4275de2859b320a5a1e22ac01212c
MD5 hash: 7385c6f13274a8ff0021d17202ea9065
humanhash: robert-grey-kitten-romeo
File name:Dekont.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:281'534 bytes
First seen:2023-08-15 06:22:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:PYa6TRS/59XcpLXYUNxpv9nm/4TfXl/U4+ojbge6D9nlkJnos:PYB8/5lcp8UNxblTfa4Pjl6D9nlkpn
TLSH T19F54120033DAD47FF69124704AB902175B79DD213C70BA0F63A0AB4DBBB9651E94E7A3
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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
290
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Dekont.exe
Verdict:
Malicious activity
Analysis date:
2023-08-15 06:24:11 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/2cfae5a9-499e-4eab-b59a-2d23f992e071

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/442726/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Searching for synchronization primitives
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/102863/overview
Behaviour
MalwareBazaar
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712
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/dccca636-02d8-4afe-ae48-644b20ba8606
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1291271
Signature
Antivirus detection for URL or domain
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 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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
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: 1291271 Sample: Dekont.exe Startdate: 15/08/2023 Architecture: WINDOWS Score: 100 33 www.webpanel.cfd 2->33 35 www.soniakmahajan.com 2->35 37 8 other IPs or domains 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 8 other signatures 2->51 11 Dekont.exe 18 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\Local\...\xbcjidpo.dll, PE32 11->31 dropped 61 Detected unpacking (changes PE section rights) 11->61 63 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 11->63 65 Maps a DLL or memory area into another process 11->65 67 Tries to detect virtualization through RDTSC time measurements 11->67 15 Dekont.exe 11->15         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 18 explorer.exe 11 1 15->18 injected process9 dnsIp10 39 www.runbe.fun 45.56.106.238, 49761, 80 LINODE-APLinodeLLCUS United States 18->39 41 chordstalkstudios.com 50.116.55.121, 49768, 80 LINODE-APLinodeLLCUS United States 18->41 43 5 other IPs or domains 18->43 53 System process connects to network (likely due to code injection or exploit) 18->53 22 svchost.exe 18->22         started        25 autochk.exe 18->25         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-14 13:05:54 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pnmne7ayftb4atlnlmwbsapq5doyzly3xzi4rml7ic4nvqmfw4ja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:k13s rat spyware stealer trojan
Link:
https://tria.ge/reports/230815-g5gfeahb58/
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:
7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712
MD5 hash:
7385c6f13274a8ff0021d17202ea9065
SHA1 hash:
f28cc60cb2b4275de2859b320a5a1e22ac01212c
Link:
https://www.unpac.me/results/626804ed-54e0-4d3c-836a-898dcca10943/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7b58d27c182c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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 7b58d27c182cc3c04d6d5b2c1901f0e8dd8caf1bbe51c8b17f40b8dac185b712

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/442726/

Comments