MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7. 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: 13


Intelligence 13 IOCs YARA 18 File information Comments
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SHA256 hash: ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7
SHA3-384 hash: 760f5310549da39929ec9ec5b4f984cce2a16475352fb7e249d957cafb7c71619f177fd759f2544ae94fccef911d4c3c
SHA1 hash: 7ab154ce438574be48a25844faec75e6d18f0012
MD5 hash: 46a5167f5fe409481222e348ab89fdc8
humanhash: india-twelve-pip-cup
File name:KOC Contract No.21056328.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:365'513 bytes
First seen:2023-11-21 12:42:03 UTC
Last seen:2023-11-21 14:19:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:3BlL/9L2/tQoQ8vOrDpxzVx7VhpCRSb6rRkxwt0Un5j023DuVj55myTPh5sMmY5:xnq/tQoY/HVxptbNxwOs5A2TEV5mujsC
TLSH T11374122193C40A3EE567C1FFE86613F9C57188A468A496D36760AF2EDD121C51E2F1F3
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 62ccc17ebaf10400 (4 x Formbook, 2 x DarkCloud)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
339
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/459512/
Detection(s):
SecuriteInfo.com.Trojan.Fbng.116.1457.6657.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
DNS request
Sending an HTTP GET request
Reading critical registry keys
Sending an HTTP POST request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin masquerade overlay packed redcap shell32
Link:
https://www.filescan.io/uploads/655ca5d72e67db4cea1bc17b/reports/2a943b67-c2f9-4d5d-9d1f-4f3b2a8814d5/overview
Verdict:
Malicious
Labled as:
Dropper.Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7
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/393840f0-7cf0-42af-8d82-460d16b21018
Result
Threat name:
FormBook, NSISDropper
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1345779
Signature
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1345779 Sample: KOC_Contract_No.21056328.exe Startdate: 21/11/2023 Architecture: WINDOWS Score: 100 35 www.wangbaomen23.xyz 2->35 37 www.warnernc.com 2->37 39 16 other IPs or domains 2->39 51 Snort IDS alert for network traffic 2->51 53 Multi AV Scanner detection for domain / URL 2->53 55 Malicious sample detected (through community Yara rule) 2->55 59 5 other signatures 2->59 11 KOC_Contract_No.21056328.exe 17 2->11         started        signatures3 57 Performs DNS queries to domains with low reputation 35->57 process4 file5 33 C:\Users\user\AppData\Local\Temp\tjysdb.exe, PE32 11->33 dropped 14 tjysdb.exe 11->14         started        process6 signatures7 71 Multi AV Scanner detection for dropped file 14->71 73 Detected unpacking (changes PE section rights) 14->73 75 Machine Learning detection for dropped file 14->75 77 2 other signatures 14->77 17 tjysdb.exe 14->17         started        process8 signatures9 47 Maps a DLL or memory area into another process 17->47 49 Queues an APC in another process (thread injection) 17->49 20 PLsseeYrGuvWeGvmUOKWyVkyd.exe 17->20 injected process10 process11 22 ipconfig.exe 13 20->22         started        signatures12 61 Tries to steal Mail credentials (via file / registry access) 22->61 63 Tries to harvest and steal browser information (history, passwords, etc) 22->63 65 Writes to foreign memory regions 22->65 67 3 other signatures 22->67 25 explorer.exe 37 1 22->25 injected 29 PLsseeYrGuvWeGvmUOKWyVkyd.exe 22->29 injected 31 firefox.exe 22->31         started        process13 dnsIp14 41 www.blackgrow.info 203.161.53.83, 49719, 49720, 49721 VNPT-AS-VNVNPTCorpVN Malaysia 25->41 43 mydesigneredge.com 162.144.13.104, 49735, 49736, 49737 UNIFIEDLAYER-AS-1US United States 25->43 45 9 other IPs or domains 25->45 69 System process connects to network (likely due to code injection or exploit) 25->69 signatures15
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2023-11-20 23:46:04 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
20 of 32 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=77fa3kxvlbiq3trqyzyqs4ac2b4e6x447erlsojnmvf3yzvd4o3q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231121-pxw5wsee22/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
0db325bdb30c1ab6949a1adfae122024c523d36c719ca0e8206ad30c6ee4d735
MD5 hash:
39fb366cc31dc8bfad1f17e92049932d
SHA1 hash:
4c160692de41331cf94b5cf58c1870ffeb42ba34
Detections:
win_formbook_w0
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win_formbook_g0
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Link:
https://www.unpac.me/results/d9055984-d6e6-458f-bf89-07c34817e968/
SH256 hash:
2dd7f0ea16db71d0d72a498e322627a47c3935942f690d137aad2c144b572c12
MD5 hash:
d39783cdd0c48b2490be2cbb7b2b707e
SHA1 hash:
dc4eb746972831fbfd077a4b09ed81534ddeebe0
Link:
https://www.unpac.me/results/d9055984-d6e6-458f-bf89-07c34817e968/
SH256 hash:
ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7
MD5 hash:
46a5167f5fe409481222e348ab89fdc8
SHA1 hash:
7ab154ce438574be48a25844faec75e6d18f0012
Link:
https://www.unpac.me/results/d9055984-d6e6-458f-bf89-07c34817e968/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ffca0daaf558/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.94
Link:
https://yomi.yoroi.company/submissions/ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe ffca0daaf558510dce30c671097002d0784f5f9cf922b9392d654bbc66a3e3b7

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/459512/

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