MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496
SHA3-384 hash: 6dc4bda609536686549508bdfea35dab7742fafc4997d8426958085b4fa48e00d1383e21224f28b8e01373147f01f024
SHA1 hash: 8c4073343633596458bfc629e622a1259a360412
MD5 hash: f4c4411efbc9a0b5bda0bae6c1f3d16c
humanhash: four-jig-juliet-diet
File name:f4c4411efbc9a0b5bda0bae6c1f3d16c.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:837'632 bytes
First seen:2022-01-25 11:15:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:Y233Ktfb8bfc4QG0tHVGLfX22j3gSenpHB/:Y2qJb8bk4QXCEpHB/
Threatray 13'091 similar samples on MalwareBazaar
TLSH T1FC05E0047BB5C762C53A5BF804F270048BB9356AA63DD5D92DCB42DB4BBAF208562F07
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f4c4411efbc9a0b5bda0bae6c1f3d16c.exe
Verdict:
Malicious activity
Analysis date:
2022-01-25 11:19:23 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b815c528-5911-4819-be32-851634cb9a2d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/222394/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61efdbfb0f8c757253e6b302/reports/65a4a83e-e128-48df-9381-b06efbc46d81/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2ab2f951-9dae-4c72-bac9-8fbd169fc185
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/927062
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 559539 Sample: ewSepyvPCd.exe Startdate: 25/01/2022 Architecture: WINDOWS Score: 100 39 www.topeasyip.company 2->39 41 www.guangkaiyinwu.com 2->41 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Multi AV Scanner detection for domain / URL 2->51 53 Found malware configuration 2->53 55 12 other signatures 2->55 9 ewSepyvPCd.exe 7 2->9         started        signatures3 process4 file5 31 C:\Users\user\AppData\Roaming\ecPJsf.exe, PE32 9->31 dropped 33 C:\Users\user\...\ecPJsf.exe:Zone.Identifier, ASCII 9->33 dropped 35 C:\Users\user\AppData\Local\...\tmpB144.tmp, XML 9->35 dropped 37 C:\Users\user\AppData\...\ewSepyvPCd.exe.log, ASCII 9->37 dropped 59 Uses schtasks.exe or at.exe to add and modify task schedules 9->59 61 Adds a directory exclusion to Windows Defender 9->61 63 Tries to detect virtualization through RDTSC time measurements 9->63 13 ewSepyvPCd.exe 9->13         started        16 powershell.exe 22 9->16         started        18 schtasks.exe 1 9->18         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 13->71 73 Maps a DLL or memory area into another process 13->73 75 Sample uses process hollowing technique 13->75 77 Queues an APC in another process (thread injection) 13->77 20 explorer.exe 13->20 injected 24 conhost.exe 16->24         started        26 conhost.exe 18->26         started        process9 dnsIp10 43 www.tuningelement.store 209.99.40.222, 49822, 80 CONFLUENCE-NETWORK-INCVG United States 20->43 45 www.lakeforestparkapartments.com 20->45 47 2 other IPs or domains 20->47 57 System process connects to network (likely due to code injection or exploit) 20->57 28 colorcpl.exe 20->28         started        signatures11 process12 signatures13 65 Modifies the context of a thread in another process (thread injection) 28->65 67 Maps a DLL or memory area into another process 28->67 69 Tries to detect virtualization through RDTSC time measurements 28->69
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2022-01-25 11:16:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vdk6du4n4tyzw3ugdshw633qmgku56obgiqbtbdfbjxup6q4asla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0be58a33d1ccbb74ef24592d2d16009bd56638aef6c294af7793e57588e04ef6
Formbook
1aac9a73533b5745a863e565e556ecc624619b3cecb917c9e8aee7b141976bb2
Formbook
37182811d9f3a0a2b3126266dc70a5253c4745de7e18e75a4c29393fbdedb142
Formbook
69beb963daa43dd4f918d96934484b37b091ba40a9697519c9803db38a2146cd
Formbook
838646bc9841804d7671fb25b3fd5d3e67e91c1d341c7125ce63ad436ada5f26
Formbook
8d38be02ab71fba9115c3a645edf515c62ffe53a5a590f7b37f362ab117473a1
Formbook
9e2502b3945f31482623e8e61dcb85b9ebb7d9a4244d9074fa289596c9da513e
Formbook
9e6a92df11bb23b335d5bbf85731a1ea96f6c4038a24c2e4edb28e2169804c30
Formbook
a2350a5de6de03952d1a75a6135bc92690500e13854d481338bb07aa011bfcd5
Formbook
f47f29cebfa58b4356cea3bb53b36d669a2c4ef9481b48efadcfd1129b518768
Formbook
+ 13'081 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:i5nb loader rat
Link:
https://tria.ge/reports/220125-nc6cdsegem/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
976cd96307264d2de5a211a58fbaf92b640b4979fdf590d00613571912e5845a
MD5 hash:
24108ba63b5d9e6b7818c43fb0c421bb
SHA1 hash:
522031e2607dacbe63edcfd43b8578ea02690e1b
Link:
https://www.unpac.me/results/3e1d0336-8772-4d7b-933c-51289cfef736/
SH256 hash:
8325a5cf7942bb46ac528c836b79180c05d71a4e7de108693d303d56bcc5def1
MD5 hash:
efdf2c54a74297c24bc73285376c432b
SHA1 hash:
564f25afb6c5599cdcd5fafaff32c1475e581af4
Link:
https://www.unpac.me/results/3e1d0336-8772-4d7b-933c-51289cfef736/
SH256 hash:
92f281416200a169297a94dd3a8a34cc3377e81468422130211bb539cc79b91b
MD5 hash:
ba7919a5f192364935f4bb5ff2e88726
SHA1 hash:
2fef42265f40fbc82c81ed2ced09ba730e0bb8c9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3e1d0336-8772-4d7b-933c-51289cfef736/
Parent samples :
a2350a5de6de03952d1a75a6135bc92690500e13854d481338bb07aa011bfcd5
8d38be02ab71fba9115c3a645edf515c62ffe53a5a590f7b37f362ab117473a1
9e2502b3945f31482623e8e61dcb85b9ebb7d9a4244d9074fa289596c9da513e
a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496
d8a9cdc29263ce68f08b4307637fe380dab9aa20bd7dde91d106169f47cd5f47
SH256 hash:
a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496
MD5 hash:
f4c4411efbc9a0b5bda0bae6c1f3d16c
SHA1 hash:
8c4073343633596458bfc629e622a1259a360412
Link:
https://www.unpac.me/results/3e1d0336-8772-4d7b-933c-51289cfef736/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a8d5e1d38de4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496

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: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.

Web download

Formbook

Executable exe a8d5e1d38de4f19b6e861c8f6f6f7061954ef9c132201984650a6f47fa1c0496

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2004814/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/222394/

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