MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728. 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: c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728
SHA3-384 hash: a31105ae70c64875aa1f380d2d6560475f5f471fbb3ab721d1cf5a633289fb41c4fe8b8f26c1c976e90a9a83ba872428
SHA1 hash: fe98e3ac512441fa49833268753a517bfc712b35
MD5 hash: b7da48db7a0e6e435e4b3bf5c2d17f6d
humanhash: tennessee-victor-single-oscar
File name:Invoice & Banking details.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:314'368 bytes
First seen:2023-11-13 06:50:17 UTC
Last seen:2023-11-13 08:22:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:dDmad57Xe1l33j30xXoLT9Q5XFwWhNf6kV7qzjsw4IytBw5wk3:dKqXom5XF1hNf6a7lpxBvk3
TLSH T19264D0E0B3DC5F77D9B6DBF5C915B20287B2B65B3125D61A1E8210DB9862F000A52F3B
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
297
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/458294/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.62.19246.12539.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/6551c75e6d8ae22c1ab281e2/reports/b40e6e36-497c-403c-9863-d6b31bd3fcc0/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728
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/fe576551-4e32-4bb0-862f-c41d91db188b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1341540
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample has a suspicious name (potential lure to open the executable)
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: 1341540 Sample: Invoice_&_Banking_details.exe Startdate: 13/11/2023 Architecture: WINDOWS Score: 100 34 www.viqvp.fun 2->34 36 www.valorant-rich.com 2->36 38 10 other IPs or domains 2->38 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Found malware configuration 2->46 48 11 other signatures 2->48 11 Invoice_&_Banking_details.exe 1 2->11         started        signatures3 process4 signatures5 56 Tries to detect virtualization through RDTSC time measurements 11->56 58 Injects a PE file into a foreign processes 11->58 14 Invoice_&_Banking_details.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 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 9 1 14->17 injected process8 dnsIp9 28 www.viqvp.fun 101.36.109.6, 49719, 80 UHGL-AS-APUCloudHKHoldingsGroupLimitedHK China 17->28 30 www.mzwcn.com 160.124.207.120, 49713, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK South Africa 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 raserver.exe 17->21         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 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/c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728/
Threat name:
ByteCode-MSIL.Trojan.Zilla
Create hunting rule
Status:
Malicious
First seen:
2023-11-13 03:22:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yt3lo6k6prrgosl2guvhkyuplf3ywa2f24m7wspmuslhu2a3k4ua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o11y rat spyware stealer trojan
Link:
https://tria.ge/reports/231113-hmhfesah9s/
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:
9a4b43e60f5fabee97075207242bcf5127e8ef726277667f050234fc35e1c810
MD5 hash:
0290553016df26e4890f66f68d91a23b
SHA1 hash:
ffda62ac3fd831ec2e95410f6ffa5b70f4455da1
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/c575848f-6e7b-4c37-b609-36dcbb2c9a92/
Parent samples :
c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728
6282a84266a87aa1e62b1304913bfdc8ce4c122f59f5731503f78655beaaa27e
129156f77f3dca373d74c668a7e4250e0812fb36bdb926aeb2ef0dec4c122846
5219f199f4f234ba2e2dbce1ac1aea9295c952f07cc2b8455e7cd43f67d719e5
5485b48416b0245aa21eae044bb2325a0e102681827134bfe8f4344edc0f5e43
SH256 hash:
cf3cb1ed1ab91dd1aca86208468b26e891f535f75ebff7e83184cc306fc931d4
MD5 hash:
2adaed22e634cca06d543f6526b7dbca
SHA1 hash:
be0ad51699017d10ef6006b3d4a1f42c59fc2b07
Link:
https://www.unpac.me/results/c575848f-6e7b-4c37-b609-36dcbb2c9a92/
SH256 hash:
70626af8d1827a8d43502c1dea98ba8e4b3b3d5e932591e8252506bc3c09dfd1
MD5 hash:
eb1e43504d3b38eb01406caeaa14ce28
SHA1 hash:
7315cb881e883fb2add1f6f2da0db6344976e475
Link:
https://www.unpac.me/results/c575848f-6e7b-4c37-b609-36dcbb2c9a92/
SH256 hash:
c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728
MD5 hash:
b7da48db7a0e6e435e4b3bf5c2d17f6d
SHA1 hash:
fe98e3ac512441fa49833268753a517bfc712b35
Link:
https://www.unpac.me/results/c575848f-6e7b-4c37-b609-36dcbb2c9a92/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c4f6b7795e7c/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: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 c4f6b7795e7c6267497a352a75628f59778b0345d719fb49eca4967a681b5728

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/458294/

Comments