MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e. 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: 14


Intelligence 14 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e
SHA3-384 hash: 8f4fc5326da12b4f69e776827bbddaefba6ed6d57416a16105f108d32c3332a673d9a2c793c6ea37e5206c3cee662cef
SHA1 hash: dd0120f3d9cb364414d6f42685cb08d0dbf281f4
MD5 hash: ac81fe64128374eab27d29cff0b31d15
humanhash: five-blossom-enemy-spaghetti
File name:New Enquiry.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:249'340 bytes
First seen:2022-03-21 09:02:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGib9GDzJAnEbkApVhIJ1Mb3ay+UV3evUghdv:85kAKJpUV3evUC1
Threatray 14'376 similar samples on MalwareBazaar
TLSH T1B034220465E2496BDA9A88F5006B75F5FB3F41C881AF2F079BF80EEE7D661474B0D092
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/253456/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/62383f4eb94fb38cb4c1af87/reports/6f4fafd9-66f5-48da-b568-5e0a6d0c33aa/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/2235345f-d9f9-4ba7-aeaa-c79b7eec5840
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/960548
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 dropped file
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
Yara detected FormBook
Yara detected Shellcode strings
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 593030 Sample: New Enquiry.exe Startdate: 21/03/2022 Architecture: WINDOWS Score: 100 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 47 5 other signatures 2->47 11 New Enquiry.exe 18 2->11         started        process3 file4 31 C:\Users\user\AppData\...\cbbemrwotc.exe, PE32 11->31 dropped 14 cbbemrwotc.exe 11->14         started        process5 signatures6 55 Multi AV Scanner detection for dropped file 14->55 57 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->57 59 Tries to detect virtualization through RDTSC time measurements 14->59 61 Injects a PE file into a foreign processes 14->61 17 cbbemrwotc.exe 14->17         started        process7 signatures8 33 Modifies the context of a thread in another process (thread injection) 17->33 35 Maps a DLL or memory area into another process 17->35 37 Sample uses process hollowing technique 17->37 39 Queues an APC in another process (thread injection) 17->39 20 explorer.exe 17->20 injected process9 process10 22 msdt.exe 20->22         started        signatures11 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        27 explorer.exe 2 154 22->27         started        process12 process13 29 conhost.exe 25->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-03-20 23:49:27 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zc4zxbvc3eqhakvc3kfwwbehey7fjxtb7qxd2bofde5jcvedfzpa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
01222693e4698149f19d31ac66567a9815f89509bac13d690de8a5afda2bee08
Formbook
46126fc4213a31ab8b8c0d29da390f4249bb80de317757c71732710375ccb9bc
Formbook
6a68426f18f239950d5bb0d82223890b44ea10de5a5fa83294457dd3dcdc5068
Formbook
772d929d92df65dbf1317692104071529b8519e077df827e5d02dc59c5ede773
Formbook
786698eab83f77c1fdc3d37daf49966befe788b0e85167083726354225176d1f
Formbook
bc94f855af63f2b711742d13249e36791c034b6369ecdc79878c04de8a4dbd6b
Formbook
e745791e3faad64dc3c475e87b458ac60853d5ca429a32b812c6bacbc841ef99
Formbook
f80dd0bf7402bebd03d303c97c8dd3f921d3e923a2521f4a2af2e4bf3c288aa1
Formbook
+ 14'366 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:pg3o loader rat suricata
Link:
https://tria.ge/reports/220321-kz3y1ababp/
Behaviour
Modifies data under HKEY_USERS
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
36b20ffa0fa23509eae93de92a02b1974da2caf6f19032897c4b89c6fc4783e7
MD5 hash:
9da673d92f429686274a20242e43f71a
SHA1 hash:
937ec600541363ff933616428660331cc5cb5bf2
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0d9063d4-b0a9-4188-af7a-9adbe5215b25/
Parent samples :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 hash:
6590cf53bc79f60f53aab2690a813b047898d558a953fd6394e8cac4fe3d0df2
MD5 hash:
69f5552e0dae5ffd9b5a3a213f5486ed
SHA1 hash:
b36a06758b5b5de4a256b3ef5b18ecb224cf0d55
Link:
https://www.unpac.me/results/0d9063d4-b0a9-4188-af7a-9adbe5215b25/
SH256 hash:
c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e
MD5 hash:
ac81fe64128374eab27d29cff0b31d15
SHA1 hash:
dd0120f3d9cb364414d6f42685cb08d0dbf281f4
Link:
https://www.unpac.me/results/0d9063d4-b0a9-4188-af7a-9adbe5215b25/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c8b99b86a2d9/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/c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e

File information

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

Malspam

Formbook

Executable exe c8b99b86a2d920702aa2da8b6b0487263e54de61fc2e3d05c5193a9154832e5e

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/253456/

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