MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3. 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: 12


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3
SHA3-384 hash: 7c33b8edb620b15af7660fa0de8b049e4d6dd7c7bac9319a3fc7615c8aa40b0ac8eac7df7b0b61ac6a7d5b442e87cdac
SHA1 hash: 20549710f386a134b7fac0db3dbe4bb1118908f1
MD5 hash: 428a6aceb56f682b4b95685dd56f805f
humanhash: carolina-missouri-kansas-mexico
File name:SKM_C221200706052800n.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:269'824 bytes
First seen:2021-01-19 12:51:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:XRW1KiG2bgn/K0RhAcmqZEFd28Kx95Z2o4Un3:XRwKiG2CKtMZmc8WAUn3
Threatray 3'492 similar samples on MalwareBazaar
TLSH C0442314A39E9492CA6F1E74D44162F0067BF0F52DAADF3FFCC94468D9833389252A67
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail.s-giken.co.jp
Sending IP: 140.227.16.105
From: JIRANYA THANAPAT<tearwhite@ever-blue.com>
Reply-To: <t.jiranya@tripetch-isuzu.co.th>
Subject: ST transfer slip
Attachment: SKM_C221200706052800.rar (contains "SKM_C221200706052800n.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
130
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SKM_C221200706052800n.exe
Verdict:
Suspicious activity
Analysis date:
2021-01-19 12:55:26 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/82cf124b-5542-4b59-ab83-51d71cc10aa9

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/112872/
Detection(s):
Porcupine.Unclassified.99420.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Sending a UDP request
Launching the default Windows debugger (dwwin.exe)
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/584969
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 341516 Sample: SKM_C221200706052800n.exe Startdate: 19/01/2021 Architecture: WINDOWS Score: 100 33 www.testabcde.net 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 8 other signatures 2->47 11 SKM_C221200706052800n.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\...\SKM_C221200706052800n.exe.log, ASCII 11->31 dropped 57 Writes to foreign memory regions 11->57 59 Sample uses process hollowing technique 11->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->61 63 Injects a PE file into a foreign processes 11->63 15 vbc.exe 11->15         started        18 WerFault.exe 20 9 11->18         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 2 other signatures 15->71 20 explorer.exe 15->20 injected process9 dnsIp10 35 www.movementspecialistslv.com 199.34.228.171, 49734, 49761, 80 WEEBLYUS United States 20->35 37 www.comunityassn.com 81.17.18.198, 49753, 80 PLI-ASCH Switzerland 20->37 39 20 other IPs or domains 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 cmstp.exe 20->24         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 24->51 53 Maps a DLL or memory area into another process 24->53 55 Tries to detect virtualization through RDTSC time measurements 24->55 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-01-19 02:10:52 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ro2m37x5tsvomkiti6ccaseftihuji6nnizrgacfa34tsva44crq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
147690957c45aafb5929325a902f5c45e9b3a9845f0c9b273bd1e08f5e327d12
Formbook
38f3aadc65df16aed9f5bbaa5f42598d3fd9b29811429fcddd679a40b092fca0
Formbook
44161c97a8a582310dd728f067a45aa78dac1222a532230efa2fd23786098be9
Formbook
485237b168904c963c63778106c2c5acf997b63b6fcff52bf10e57ff8d7f5554
Formbook
63ddf9a4a4f69468eef45c633df0066f39b025e7a0a0c8d8dc7e50982ed93b39
Formbook
7a847a23a2407172035d5eeb7fe1117c851b2947e133c1ca3a236293e5fc5432
Formbook
88e0177e24ad6459ee60566c46b15140c9b64ce8a59abfb6011810514d1ac79a
Formbook
8dcbbb73c0afe52777190faea7b3c0c5bf89407a20d1e24784e7afe7f163ba1a
Formbook
9322c039cec01a5d43492f882c2b5d02aa9357ea4c2e95a039ea1ca1841112da
Formbook
e2d83de235b73fa4366db562daf7a16884eb632bc00ac8d12d371bdc7a2d1c2f
Formbook
+ 3'482 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader loader rat spyware stealer trojan
Link:
https://tria.ge/reports/210119-5kh9snfjns/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
Program crash
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Xloader Payload
Formbook
Xloader
Suspicious use of NtCreateProcessExOtherParentProcess
Malware Config
C2 Extraction:
http://www.destinny.com/s9zh/
Unpacked files
SH256 hash:
0d3a78ed7429bdd16843440c163a74ec3b8a7452118bd8d113cf78adc9f237eb
MD5 hash:
d1eab2a888614b871a02d250f5b1faba
SHA1 hash:
7eb45f39f124bd78ba29c90a582841bfa8440fc4
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/e2ce5c78-3857-40d7-887e-98063d3ff4a6/
Parent samples :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 hash:
3b90616232e340d9a80b1a636c07945caee537043cf20d7744ded359f612c355
MD5 hash:
38e7299a8fe9b25b59f9bc44564577a9
SHA1 hash:
6c2d3e0136b1a2556f424ccce105236e3abe40b6
Link:
https://www.unpac.me/results/e2ce5c78-3857-40d7-887e-98063d3ff4a6/
SH256 hash:
8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3
MD5 hash:
428a6aceb56f682b4b95685dd56f805f
SHA1 hash:
20549710f386a134b7fac0db3dbe4bb1118908f1
Link:
https://www.unpac.me/results/e2ce5c78-3857-40d7-887e-98063d3ff4a6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3

File information

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

Malspam

Formbook

rar 9ba439098a991f6c6c177d0ce068d09f6d193a71ba262c32a75e03635e30289b

Formbook

Executable exe 8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3

(this sample)

  
Dropped by
MD5 7f87f7ee0b069e558a6385cf2218abbe
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112872/
  
Dropped by
SHA256 9ba439098a991f6c6c177d0ce068d09f6d193a71ba262c32a75e03635e30289b

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