MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2. 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: 17


Intelligence 17 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2
SHA3-384 hash: 42574996cefb13d7774ab06cc4d530d3b80448098603dcf7b2f768540caf184cf8643be4707695f5c06f2c5e18f63da4
SHA1 hash: 26b0e6828b24e6be84d8ea52ffcf5220d0e5af93
MD5 hash: a90745e8fc878a0aedc37a7ec55a67bb
humanhash: juliet-hotel-august-colorado
File name:Dekont.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:269'156 bytes
First seen:2023-07-14 12:17:46 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:/Ya6xjsGsbBWU+gDLRHyS8r28jkU3hA/cVF/B8wAF+Bo:/YL2YgD9SS8r28wylF/B8/5
TLSH T137441254BBF1C067F5B20A702D7A82257BFAC83250A54F0B27642D297C377925B4DBA3
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 :
293
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
Dekont.exe
Verdict:
Malicious activity
Analysis date:
2023-07-14 12:24:31 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/5fbe189c-3de6-416f-8afe-bed3b8d04d11

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/418791/
Detection(s):
SecuriteInfo.com.Gen.Variant.Zusy.475856.29988.19341.UNOFFICIAL
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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
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64b13d006e9f7019dea0e246/reports/a9f3f11d-4e06-4924-b79d-258af1f059d5/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2
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/7a85ad1a-5cd6-43bb-953e-6fd49929c1b2
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1273197
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1273197 Sample: Dekont.exe Startdate: 14/07/2023 Architecture: WINDOWS Score: 100 31 www.labanquequivouslerendbien.com 2->31 39 Snort IDS alert for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 7 other signatures 2->45 11 Dekont.exe 18 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\xzyot.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 1 15->18 injected process9 dnsIp10 33 www.sandyssugarshack.com 45.207.129.189, 49699, 80 SKHT-ASShenzhenKatherineHengTechnologyInformationCo Seychelles 18->33 35 www.hppily.com 166.88.207.77, 49700, 80 EGIHOSTINGUS United States 18->35 37 2 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 control.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:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2/
Threat name:
Win32.Trojan.Zusy
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Status:
Malicious
First seen:
2023-07-14 12:18:09 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ibq7j3gf7hvihj7y6paijm4ztwxaaljgyhogfv655tjml4q2e3ba._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:mh04 rat spyware stealer trojan
Link:
https://tria.ge/reports/230714-pgmlhsed9y/
Behaviour
Enumerates system info in registry
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
96426092d611b009603fc2413f3f7a2b686c38e96cb43d10de83027f954966fa
MD5 hash:
bd9a0dd064d0fd823ee51e7627240529
SHA1 hash:
154dc773903f01f94d9b19d8f986bb372aca878a
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/10cee638-42fe-4f7c-8544-6f9e5ada39b7/
Parent samples :
bc692450679bd50a88731eadd17d16cdab40a7f15bf632b24984f075bd99bb0c
4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2
f5514ba2ddd26604600411906b8391af11ef05fa5c034f45f30c50ee7048ddd4
7fe06d6a92d7557335e0b7fb8f79afad7f23a405ac1c476c1d151850348670d5
SH256 hash:
4207e7900b26659bd6cd3f8bc9c0fe49a8b6683a1e4bf6f74b031cc07b950cf1
MD5 hash:
cd791cde244b38b7262bd4753e94ddab
SHA1 hash:
30518bcac0edc9d05f26a06f72c576ae0e3a7faa
Link:
https://www.unpac.me/results/10cee638-42fe-4f7c-8544-6f9e5ada39b7/
SH256 hash:
4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2
MD5 hash:
a90745e8fc878a0aedc37a7ec55a67bb
SHA1 hash:
26b0e6828b24e6be84d8ea52ffcf5220d0e5af93
Link:
https://www.unpac.me/results/10cee638-42fe-4f7c-8544-6f9e5ada39b7/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4061f4ecc5f9/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
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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 4061f4ecc5f9ea83a7f8f3c084b3999dae002d26c1dc62d7ddecd2c5f21a26c2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/418791/

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