MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795. 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 5 File information Comments
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SHA256 hash: 18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
SHA3-384 hash: 2680ce22009b939066dab595106092850ba8dc288e3403b114d9b78348b10d53a0f56602b95e9552e625f60bc4e6141e
SHA1 hash: 43034a4a3e0c9e36691be73e3d031adf68ff924c
MD5 hash: db7625a1f6c3e496e64476cddde38f61
humanhash: two-gee-illinois-wyoming
File name:Doc _180924.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:817'152 bytes
First seen:2024-09-19 12:27:27 UTC
Last seen:2024-09-23 12:34:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:cucFZ6W/vdWvR1/YLReWFabike8lf/yCrUhEaxcYrUx3F+Y1Gd:Fc7NWvPeRl0bike8lfHrUhVcPtMY1Gd
TLSH T1FF05BF1023A8CA45D87E2775E561D1F007B67E5AE9BAD25F8EC4BCDB3E32B404926307
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
348
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Doc _180924.exe
Verdict:
Malicious activity
Analysis date:
2024-09-19 12:51:25 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/66ac0284-7622-49f1-9c60-4ee349d04bab

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Dropper.Nanocore-10025638-0
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ec18e977496a3b0d6ef20f
Tags:
Execution Static Stealth Swotter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66ec18dfbb9fe02b41b4cf35/reports/413e4eb6-d696-464f-a6e2-8242dd3d5b13/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3ef4af85-b211-47fd-b1da-8c87395a954b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1513855
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
Loading BitLocker PowerShell Module
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
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1513855 Sample: Doc _180924.exe Startdate: 19/09/2024 Architecture: WINDOWS Score: 100 33 www.tonomushotel.xyz 2->33 35 www.qzxx.top 2->35 37 10 other IPs or domains 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 47 11 other signatures 2->47 11 Doc _180924.exe 4 2->11         started        signatures3 45 Performs DNS queries to domains with low reputation 33->45 process4 file5 31 C:\Users\user\AppData\...\Doc _180924.exe.log, ASCII 11->31 dropped 57 Adds a directory exclusion to Windows Defender 11->57 59 Injects a PE file into a foreign processes 11->59 15 Doc _180924.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 69 2 other signatures 15->69 20 explorer.exe 64 1 15->20 injected 67 Loading BitLocker PowerShell Module 18->67 22 conhost.exe 18->22         started        process9 process10 24 explorer.exe 20->24         started        signatures11 49 Modifies the context of a thread in another process (thread injection) 24->49 51 Maps a DLL or memory area into another process 24->51 53 Tries to detect virtualization through RDTSC time measurements 24->53 55 Switches to a custom stack to bypass stack traces 24->55 27 cmd.exe 1 24->27         started        process12 process13 29 conhost.exe 27->29         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-09-19 09:09:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dciryeuyb74q2pffwrlkig5jh5xghuko7kdwh3rvjq3ijydde6kq._file
Verdict:
malicious
Label(s):
formbook
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unknown_loader_037
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Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bc01 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240919-pncpwsyard/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7db8e29e-6340-42d2-9960-0693b21f220c
Unpacked files
SH256 hash:
07864a36094fdb51d595bc3e42bce8429054de6c820f8c9dcfe1820c0fd1f8ff
MD5 hash:
d3b47fb3dd8b1c832901282b2d95a83b
SHA1 hash:
84d0afe2d8b7efd5f06eab1ac26d2bc9e25f9c38
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/c07e08da-4a9a-4e81-b15f-f234b1b68bec/
Parent samples :
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e
c76f4cc201813bc9e4a8d5ae27ce0c59b799f02dd48b3e09af20118a8fe18c50
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
94f858ec5529f4f52ae1bed542d9a38b2ab7e4be0446c4d9252f0de3d7cf2dce
e7fc9e51d81f4b40dca80a3d83ca54a03120566b6dd6f76e0299546ac178f633
c240de1c470b2ba22b8628de9a10b7d81e9f453eb94a46a9d0875f7f1705409c
090ae9dc91f1165ca92841d7e3485580caa257c2848fed356d78c86e3d72f50b
ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93
64a8f5c2209bf86e1aa4489fffa5cf93aee6955b0106909345a313de38ad7885
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988
f6f8e9f276a4246055e3bdc46ad1276ef453cbf6d6e8affe67127ea0099bece8
bf7e2c77f1159e34afbead32a16fbff023b6467104ff0220c81f607a2910880e
ece49e828c96a3cbc96535f04ef66109c997cb13a87850c4b66b3de0fd2818f7
6c2cf6bf017b8e9c8731b0b0bc1ddfd20c14e381d5282832d5646ac29158cf73
676528e924dfe6e5e119f33ac5e7e8ee5661f871759e4b32ac27b0a1d243e329
010fc4f0e382f0c0de55b3fcf4b80f6284694833af9d759c584b63a7d540cf2f
SH256 hash:
62ba8776acf9f77582b0f331e6d058c9613f8b12b05f510e42e2064f297b7693
MD5 hash:
2f97c948434403f94090c9102fe47a95
SHA1 hash:
926684353abf1a3fcd8816e12bd2ae08e5e24467
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/c07e08da-4a9a-4e81-b15f-f234b1b68bec/
SH256 hash:
d1f4761e2e1e15fe454a70864c3aa1da7d6dc90582222bbd7e6d53d0bbee6f62
MD5 hash:
b08a9c9cb485bd7567bf062922a1e897
SHA1 hash:
3b5781fb115d06bdede80cb6ff627fde1a50d9f5
Link:
https://www.unpac.me/results/c07e08da-4a9a-4e81-b15f-f234b1b68bec/
Parent samples :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 hash:
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
MD5 hash:
db7625a1f6c3e496e64476cddde38f61
SHA1 hash:
43034a4a3e0c9e36691be73e3d031adf68ff924c
Link:
https://www.unpac.me/results/c07e08da-4a9a-4e81-b15f-f234b1b68bec/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/18911c12980f/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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
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 18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795

(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 (HIGH_ENTROPY_VA)high

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