MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5
SHA3-384 hash: e139ce0ee70b574f33f4dfed1fd14eab84c4deec2daaf170531f125bee2e05619bce79079795df6bb32dee4707131dbc
SHA1 hash: 043b1cf91cb019b5675d3228b132f7c591bad56b
MD5 hash: 2f8fde0fe6ef9f6be304a6aed484b953
humanhash: football-violet-river-arkansas
File name:DHL Notification_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:962'560 bytes
First seen:2022-09-13 06:26:48 UTC
Last seen:2022-09-20 07:46:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:bpQmx11DV5352LmpHItdYrRXomyeNzjvvj/JMVvx5sXXPsJU:NpNV5p2KpHkdAXTyW38vEHPp
TLSH T17D252C0721C549A5C17250BC24CCC5B74B6ADE45E63BC946BFC9BDAFF1B2F2846D22A0
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 71d4f0f0f0f0d0f2 (11 x Formbook, 6 x AgentTesla, 5 x SnakeKeylogger)
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
219
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
DHL Notification_pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-09-13 06:47:38 UTC
Tags:
formbook trojan stealer opendir
Link:
https://app.any.run/tasks/cc02223f-f2c0-4a1a-bc78-7211ad03625b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/309626/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.42577.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/632023541d4a849311e87e26/reports/56d7d246-e57e-4cb0-a294-9d9e4f50aabe/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/96fe2ba1-b263-403b-baa8-d3704f212e70
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1069350
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 701879 Sample: DHL Notification_pdf.exe Startdate: 13/09/2022 Architecture: WINDOWS Score: 100 32 www.535cambridge.com 2->32 34 b4c9s2a5.stackpathcdn.com 2->34 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 9 other signatures 2->48 11 DHL Notification_pdf.exe 3 2->11         started        signatures3 process4 file5 30 C:\Users\...\DHL Notification_pdf.exe.log, ASCII 11->30 dropped 14 DHL Notification_pdf.exe 11->14         started        17 DHL Notification_pdf.exe 11->17         started        process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 19 explorer.exe 14->19 injected process8 dnsIp9 36 shops.myshopify.com 23.227.38.74, 49757, 80 CLOUDFLARENETUS Canada 19->36 38 www.shopkashandlaine.com 19->38 40 kash-laine.myshopify.com 19->40 50 System process connects to network (likely due to code injection or exploit) 19->50 23 cmstp.exe 19->23         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 23->52 54 Maps a DLL or memory area into another process 23->54 56 Tries to detect virtualization through RDTSC time measurements 23->56 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-09-12 14:33:58 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
27 of 39 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7apyg6gw352sx6gd5pdmpv3ervbsuvygrgvtfejvfqcksx5f4ksq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ko29 rat spyware stealer trojan
Link:
https://tria.ge/reports/220913-g7rddsaffm/
Behaviour
Enumerates system info in registry
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
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ddebb3d4-9d7a-436d-b007-d6b5c9149d83
Unpacked files
SH256 hash:
86125d2ae6fc2cf55c046eb22c1c9d8fe14b9979125a9668b7f077f19d1607b3
MD5 hash:
87070ce14f10284f05356e3112627405
SHA1 hash:
a0899226b01bf7e066dafb289b94d05feee05bd2
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
Parent samples :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 hash:
8b533ffaed24e0351e489b14aaac6960b731db189ce7ed0c0c02d4a546af8e63
MD5 hash:
dbc7be56e6e32349315170599c8b333f
SHA1 hash:
d8e5840e3574b87d435e55a65ac648e040871aee
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
SH256 hash:
adedc884bf7a8b23d03a20203389db7102ac7e50e8cae72bdaba81361be3b25f
MD5 hash:
c53f04ea7752abecb2726417e221fc20
SHA1 hash:
c35a781470b7da3dfa08723df6b383c20047339a
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
SH256 hash:
54bc6c7a2a9d4bbf0781af3fc77f62193edc136082e00e40d07cc4f1458e1a47
MD5 hash:
a8d41d3ae4a77540e0fc5d114e024b8f
SHA1 hash:
9f7614c880d83809aa635ae654c4a17b1bee847d
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
SH256 hash:
f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5
MD5 hash:
2f8fde0fe6ef9f6be304a6aed484b953
SHA1 hash:
043b1cf91cb019b5675d3228b132f7c591bad56b
Link:
https://www.unpac.me/results/8048d490-4826-4ec4-b098-10546c74cba5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe f81f8378d6df752bf8c3ebc6c7d7648d432a570689ab3291352c04a95fa5e2a5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/309626/

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