MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457. 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: 14


Intelligence 14 IOCs YARA 22 File information Comments

SHA256 hash: c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457
SHA3-384 hash: 9008142ebe5ed579695f6744e05e35979e47a19a62b9661484700bb96ae6cf3d6f1101104ce0428cd9c569a9fafda5c9
SHA1 hash: e9664338782ac9ffb910db3035c096da38707c70
MD5 hash: cc6d7728ecb9c30b5e2d64bc46f1005d
humanhash: fanta-connecticut-sierra-victor
File name:c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457
Download: download sample
Signature Formbook
File size:631'296 bytes
First seen:2025-01-10 14:34:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:GPG/NIp8R0Z5rtzgKcM5E4PPsNNII6iutz:VWpo0tz9d55PsnII6i2
TLSH T1A8D401986906FA06CA8167350E72F7B827BC4EDDE901D2139FDCBDEBBC65D150C84682
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter adrian__luca
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
205
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457
Verdict:
No threats detected
Analysis date:
2025-01-10 19:16:48 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
93.3%
Tags:
virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
infostealer packed packed packer_detected vbnet
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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)
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
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Uses netstat to query active network connections and open ports
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1588562 Sample: aryqz9YTC8.exe Startdate: 11/01/2025 Architecture: WINDOWS Score: 100 32 www.utties.xyz 2->32 34 www.ulfcoastnow.net 2->34 36 10 other IPs or domains 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Multi AV Scanner detection for submitted file 2->42 46 6 other signatures 2->46 11 aryqz9YTC8.exe 3 2->11         started        signatures3 44 Performs DNS queries to domains with low reputation 32->44 process4 file5 30 C:\Users\user\AppData\...\aryqz9YTC8.exe.log, ASCII 11->30 dropped 58 Tries to detect virtualization through RDTSC time measurements 11->58 60 Injects a PE file into a foreign processes 11->60 62 Switches to a custom stack to bypass stack traces 11->62 15 aryqz9YTC8.exe 11->15         started        18 aryqz9YTC8.exe 11->18         started        signatures6 process7 signatures8 64 Modifies the context of a thread in another process (thread injection) 15->64 66 Maps a DLL or memory area into another process 15->66 68 Sample uses process hollowing technique 15->68 70 2 other signatures 15->70 20 explorer.exe 63 1 15->20 injected process9 signatures10 48 Uses netstat to query active network connections and open ports 20->48 23 NETSTAT.EXE 20->23         started        process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 23->50 52 Maps a DLL or memory area into another process 23->52 54 Tries to detect virtualization through RDTSC time measurements 23->54 56 Switches to a custom stack to bypass stack traces 23->56 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Status:
Malicious
First seen:
2024-12-06 02:59:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
27 of 38 (71.05%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:gd04 discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
Win.Packed.Pwsx-10038556-0
YARA:
n/a
Unpacked files
SH256 hash:
2ec49059327cf3e55753f29114bc64385a43dc3b5bf38dcab7d24bdc367c4060
MD5 hash:
889c1b7d79cf0f92b151045d6d1c737c
SHA1 hash:
7dd00f5171b43c06e708f083fb60baebf32188f0
Detections:
FormBook win_formbook_auto win_formbook_g0 win_formbook_w0 Windows_Trojan_Formbook Formbook
SH256 hash:
4c669804910e2eef50f1f07c23dc5b2f55b18c76bdbbdd0c754faf473cae6175
MD5 hash:
9d1e4625d0b8b9d1abac2305ddfdc975
SHA1 hash:
475deb22277b4a891505bde45f7e75ea5a4a54d6
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24 SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
acf09c80699691d3a6a8d52577d06a7054c1bda1953a55527251e92e15ba037f
MD5 hash:
69473b5123488cff4aae599aa14eb3a4
SHA1 hash:
1d3562fd2fb55582cb97441b9f01065dd80373fc
SH256 hash:
c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457
MD5 hash:
cc6d7728ecb9c30b5e2d64bc46f1005d
SHA1 hash:
e9664338782ac9ffb910db3035c096da38707c70
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:crime_win32_ransom_avaddon_1
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
Rule name:DebuggerCheck__GlobalFlags
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Author:Willi Ballenthin
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RansomPyShield_Antiransomware
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:Windows_Trojan_Formbook
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Author:@malgamy12

File information


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

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 (HIGH_ENTROPY_VA)high

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