MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a. 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: 16


Intelligence 16 IOCs YARA 1 File information Comments
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SHA256 hash: 03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a
SHA3-384 hash: 4f2d45024198928d854a8cbfd0beee81c514d17c06c0a3cca7c37d364ba67b2ad8a648cf68951259827fd56bc4196bc4
SHA1 hash: e21f1e805444a21088784b5b882665693af12e3e
MD5 hash: 3a90561f34cdfa01770f7a8092b7c8c3
humanhash: skylark-equal-oklahoma-black
File name:DKU0021176pdf.22.12.2022pdf.exe
Download: download sample
Signature Formbook
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File size:258'997 bytes
First seen:2022-12-22 13:18:52 UTC
Last seen:2022-12-22 14:40:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 97318da386948415d08cef4a9006d669 (71 x Formbook, 35 x SnakeKeylogger, 26 x AgentTesla)
ssdeep 6144:LkwpEikhBhrYVJw9rXRozAiZWpLz8UCKgI7XJ0c:jEx9rYVJw9rhokvgIzec
TLSH T16D44122EB8D2E9E3E2C68A71247B876897B7F0408064F59F77301FAF7C615C299582D1
TrID 92.7% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133)
3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
202
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
DKU0021176pdf.22.12.2022pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-12-22 13:22:06 UTC
Tags:
installer formbook xloader trojan stealer
Link:
https://app.any.run/tasks/166a9a66-4ff2-49ac-9833-8e7fa38acf61

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/349051/
Detection(s):
SecuriteInfo.com.Variant.Jaik.110210.18140.5492.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63a45947673d3bcb5ee0bc15/reports/637c8ff6-07d3-4f3c-9b1e-bcd0a1f7aa5d/overview
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/54f40a20-77ce-4609-9344-3190bb8dd8fb
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1139360
Signature
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 772090 Sample: DKU0021176pdf.22.12.2022pdf.exe Startdate: 22/12/2022 Architecture: WINDOWS Score: 100 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Yara detected FormBook 2->47 49 2 other signatures 2->49 11 DKU0021176pdf.22.12.2022pdf.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\...\zjjkeyxu.exe, PE32 11->31 dropped 14 zjjkeyxu.exe 11->14         started        process5 signatures6 59 Multi AV Scanner detection for dropped file 14->59 61 Maps a DLL or memory area into another process 14->61 63 Tries to detect virtualization through RDTSC time measurements 14->63 17 zjjkeyxu.exe 14->17         started        process7 signatures8 35 Modifies the context of a thread in another process (thread injection) 17->35 37 Maps a DLL or memory area into another process 17->37 39 Sample uses process hollowing technique 17->39 41 Queues an APC in another process (thread injection) 17->41 20 explorer.exe 17->20 injected process9 dnsIp10 33 www.dispenserz.com 20->33 51 System process connects to network (likely due to code injection or exploit) 20->51 24 cscript.exe 20->24         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 24->53 55 Maps a DLL or memory area into another process 24->55 57 Tries to detect virtualization through RDTSC time measurements 24->57 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-12-22 10:19:43 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=aoad3jwn44apqxff34zqyp6lvulnlegusingbteddrpwg3rasfva._file
Verdict:
malicious
Label(s):
formbook
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cobaltstrike
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b21g rat spyware stealer trojan
Link:
https://tria.ge/reports/221222-qkhmeaee56/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2ccd5d39-080c-487c-a694-9b8944d2290c
Unpacked files
SH256 hash:
4deef53f2b385de278a2dd0b554cedf346104b8486779d003d77d9232415c916
MD5 hash:
da97cc753e6eda2f3db20f16e9d876bf
SHA1 hash:
1fb9e83ed97ec39358add29095c3df773e314773
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/34e2d978-0749-4e73-bf48-15cb65e37dc3/
Parent samples :
03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a
be9c97f837293aea20541bc79acef3515ddffa81fb6e2306d9f0dcf26b63f7f5
ed2f75525575b5e42807ad0c42f3da38b75f84205eef6e4dffbd799fe0bb24e8
5b6a42756dca06a97d71a5ea64c1573d1445500fd0cfc16fba851b555908695c
62561bac40812897c76c0036a3bdb5c645e4de95e96caa0443e52d2b33d320e7
03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f
SH256 hash:
a3348c6c2acaf3e1578e9a1a7d9e8dc32bb2375412451b30e1deb3d71f4f56fb
MD5 hash:
dbb4b57bed5f23d8e7b4190d57292152
SHA1 hash:
496a3386148208259f986e0312e4ecb6169043ee
Link:
https://www.unpac.me/results/34e2d978-0749-4e73-bf48-15cb65e37dc3/
SH256 hash:
03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a
MD5 hash:
3a90561f34cdfa01770f7a8092b7c8c3
SHA1 hash:
e21f1e805444a21088784b5b882665693af12e3e
Link:
https://www.unpac.me/results/34e2d978-0749-4e73-bf48-15cb65e37dc3/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/03803da6cde7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a

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:meth_get_eip
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Author:Willi Ballenthin

File information

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

Malspam

Formbook

Executable exe 03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/349051/

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