MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d. 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: 12


Intelligence 12 IOCs YARA 12 File information Comments
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SHA256 hash: 49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d
SHA3-384 hash: 5d97da027c9b5b8b6f25880a99a297fb67a3ce6d9fb09e276f864f0bb787e66db4ea68b315fbeb61863a5718f4e295ab
SHA1 hash: 32740fe0c9a1322ddd026a3d11b32301ee6e1fc8
MD5 hash: 3fbf98c59af00344d3a93203075ee48d
humanhash: ceiling-pluto-muppet-carolina
File name:VZXCFS.exe
Download: download sample
Signature Formbook
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File size:338'432 bytes
First seen:2025-01-30 12:38:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:7jiVfeTk4bCoJ/8tN7F4Cm3MGp8di42Dh0zgXWBNDgirTH:7jkfN6OH7y7cTu+sXMNDgirTH
TLSH T1F174E09D361072DFC89BD472DE682DB4EB9174BB431B5207942306AAEE4E997CF140F2
TrID 28.5% (.EXE) Win64 Executable (generic) (10522/11/4)
17.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
13.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.2% (.EXE) Win32 Executable (generic) (4504/4/1)
5.6% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
488
Origin country :
DK DK
Vendor Threat Intelligence
Detection(s):
PUA.Win.Packed.ConfuserEx-6391397-0
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Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679b74d939cd5095f12c5097
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
confuser confuserex obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/679b72f34587880099ba18ab/reports/a6358453-a84f-48e9-8319-bae2cb878312/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d
Result
Verdict:
SUSPICIOUS
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/4924a072-6f43-42e7-82ef-1c5ca5dcedbd
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1603027
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1603027 Sample: VZXCFS.exe Startdate: 30/01/2025 Architecture: WINDOWS Score: 100 31 www.shibfestival.xyz 2->31 33 www.gnolls.xyz 2->33 35 16 other IPs or domains 2->35 45 Suricata IDS alerts for network traffic 2->45 47 Antivirus / Scanner detection for submitted sample 2->47 49 Multi AV Scanner detection for submitted file 2->49 53 5 other signatures 2->53 10 VZXCFS.exe 3 2->10         started        signatures3 51 Performs DNS queries to domains with low reputation 33->51 process4 file5 29 C:\Users\user\AppData\...\VZXCFS.exe.log, CSV 10->29 dropped 65 Writes to foreign memory regions 10->65 67 Allocates memory in foreign processes 10->67 69 Injects a PE file into a foreign processes 10->69 14 CasPol.exe 10->14         started        signatures6 process7 signatures8 71 Maps a DLL or memory area into another process 14->71 17 OvsMRdrN1.exe 14->17 injected process9 signatures10 43 Found direct / indirect Syscall (likely to bypass EDR) 17->43 20 ROUTE.EXE 13 17->20         started        process11 signatures12 55 Tries to steal Mail credentials (via file / registry access) 20->55 57 Tries to harvest and steal browser information (history, passwords, etc) 20->57 59 Modifies the context of a thread in another process (thread injection) 20->59 61 3 other signatures 20->61 23 OvsMRdrN1.exe 20->23 injected 27 firefox.exe 20->27         started        process13 dnsIp14 37 www.antobloom.xyz 103.106.67.112, 50050, 50051, 50052 VOYAGERNET-AS-APVoyagerInternetLtdNZ New Zealand 23->37 39 mercadoacheaqui.shop 185.173.109.83, 50042, 50043, 50044 TERRATRANSIT-ASDE Germany 23->39 41 9 other IPs or domains 23->41 63 Found direct / indirect Syscall (likely to bypass EDR) 23->63 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d/
Threat name:
Win32.Trojan.CrypterX
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Status:
Malicious
First seen:
2025-01-30 12:39:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jh7xkbo2k675b4h4y666wk2qk7ce2hhsmik6w3vl4z6kivzexj6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250130-pvl7xatjgr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Informative
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4bd70d7a-3a7d-49de-9063-12facb0642c2
Unpacked files
SH256 hash:
134c025cc040616eecd467d3fb2fc0f5532f3f63b6721f4cc27852390b76deb5
MD5 hash:
96d2916ad54383c04506f8c1b61cce2a
SHA1 hash:
aaa6e00c99225d3346d6f1897d770b7ee78351ae
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/805921ca-3824-43a2-b56f-8101390e8512/
SH256 hash:
2b5f4bbee6aa63a9862a01e2447769686665aeeb1fe01248a06ae9a142cd4121
MD5 hash:
5b46dca48da3ea33aaafc521813420e2
SHA1 hash:
95a667061fca35b7c01b284d36bf411a153a0bfe
Link:
https://www.unpac.me/results/805921ca-3824-43a2-b56f-8101390e8512/
SH256 hash:
49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d
MD5 hash:
3fbf98c59af00344d3a93203075ee48d
SHA1 hash:
32740fe0c9a1322ddd026a3d11b32301ee6e1fc8
Link:
https://www.unpac.me/results/805921ca-3824-43a2-b56f-8101390e8512/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/49ff7505da57/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:Formbook
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Author:kevoreilly
Description:Formbook Payload
Rule name:INDICATOR_EXE_Packed_ConfuserEx
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Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:meth_stackstrings
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Author:Willi Ballenthin
Rule name:NET
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Author:malware-lu
Rule name:pe_imphash
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Rule name:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
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Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
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Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:ThreadControl__Context
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Malspam

Formbook

Executable exe 49ff7505da57bfd0f0fcc7bdeb2b5057c44d1cf26215eb6eabe67ca45724ba7d

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments