MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
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SHA256 hash: 39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7
SHA3-384 hash: c6958e7d3f54cc0efb20d9b7c1ddac9be9e2dcd91a63ce7ec58dad4cca4b99611bd69f06e1dc0a8823545fa85874390e
SHA1 hash: 9f37ae30983b62b6101e4a0808b7200312005dfe
MD5 hash: 5bec1fc847c595a94fbe7efb0695c640
humanhash: carolina-march-spring-vermont
File name:5bec1fc847c595a94fbe7efb0695c640.exe
Download: download sample
Signature Formbook
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File size:275'480 bytes
First seen:2022-06-20 14:09:41 UTC
Last seen:2022-06-20 19:00:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:S9ri0xgdlWR6CDISokOxJCBOHbQzXZErdEC/Tv3aMP+xzxxhR:So8fHokOjyLJEpTvaM8h
TLSH T17144E05B73C49B00D1ECAD35C4EF41141BAAEB833973E7593E4A53AC5B423A2AD44ACD
TrID 52.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
22.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.5% (.EXE) Win64 Executable (generic) (10523/12/4)
4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
228
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
Etalon Zala Kft.xlsx
Verdict:
Malicious activity
Analysis date:
2022-06-20 18:46:34 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/11c557a3-87e5-4f70-9254-656cabc5c6f4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/281650/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.1239.14694.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62b08005bc9ece72b9981531/reports/1bbd35e2-d78c-4b91-9e24-1c7f8b6f6028/overview
Result
Verdict:
UNKNOWN
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/f904299f-38c4-4f29-a48f-2b0e6dd2af1c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016378
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 648909 Sample: vHh8WXjvIA.exe Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 34 Multi AV Scanner detection for domain / URL 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for URL or domain 2->38 40 6 other signatures 2->40 10 vHh8WXjvIA.exe 1 2->10         started        process3 file4 32 C:\Users\user\AppData\...\vHh8WXjvIA.exe.log, ASCII 10->32 dropped 48 Writes to foreign memory regions 10->48 50 Allocates memory in foreign processes 10->50 52 Injects a PE file into a foreign processes 10->52 54 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->54 14 cvtres.exe 10->14         started        17 cvtres.exe 10->17         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 19 explorer.exe 14->19 injected 64 Tries to detect virtualization through RDTSC time measurements 17->64 process8 process9 21 chkdsk.exe 19->21         started        signatures10 42 Modifies the context of a thread in another process (thread injection) 21->42 44 Maps a DLL or memory area into another process 21->44 46 Tries to detect virtualization through RDTSC time measurements 21->46 24 cmd.exe 1 21->24         started        26 explorer.exe 2 149 21->26         started        28 explorer.exe 101 21->28         started        process11 process12 30 conhost.exe 24->30         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2022-06-20 14:10:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 26 (69.23%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hgr7csochvvjmu32u3x653onfwwllwjbapdtnqiv5432gbkknktq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:uu0p loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220620-rgn6fsdgdr/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
050a5cfb127a824e03b0dd1c5cd8d67509544f43d82e0bef2e0c25b0763636ec
MD5 hash:
513c24a805fe1edb6e6cf86ccad70660
SHA1 hash:
c799f52c3d853d768164551b4526806eae757788
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/f2a28aa2-a3b8-4343-a0c1-f272b045340c/
Parent samples :
19dcc4800e5e1b9a286a94597fa408a1d90e6789896907ccf59ed4d328831150
814f2e3ff651afd0a82fe2b2c953c27e8ffda9df3fd7232681da30d29573271f
69abc132bf9e2db3f8d1feac013088c9915281b17c9ac918490e10cd64d7be2f
39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7
SH256 hash:
4cd2d73f7f024dbc79cf2ca76bb2a1755b91689cb3d87bf98f16ee5ae6c125c3
MD5 hash:
ab05fdf57294028d4826f07323f25e82
SHA1 hash:
c9d74482d5945a40f27995c66a9d3e5d26425a21
Link:
https://www.unpac.me/results/f2a28aa2-a3b8-4343-a0c1-f272b045340c/
SH256 hash:
39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7
MD5 hash:
5bec1fc847c595a94fbe7efb0695c640
SHA1 hash:
9f37ae30983b62b6101e4a0808b7200312005dfe
Link:
https://www.unpac.me/results/f2a28aa2-a3b8-4343-a0c1-f272b045340c/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/39a3f149c23d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7

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:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Web download

Formbook

Executable exe 39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2245751/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/281650/

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