MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079
SHA3-384 hash: 5d47b3a609db796e45acc8351cacb75698a7d98c1f1c1f606ba815bbfda4b28e10090fbc3fb67ba26e97395520a07303
SHA1 hash: 7f3b9b36342bb863950e592063db38cd2c3f8bb9
MD5 hash: edb54a30972b862cfba8589bb1f67c7e
humanhash: minnesota-berlin-helium-ack
File name:czOxHskgIAQwZ8m.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:435'200 bytes
First seen:2021-10-20 08:42:21 UTC
Last seen:2021-10-20 08:42:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:S0SrZ2vE4MtuTN6GLMX3a9sO81joauMuB3fj:Sf2vE9tuPgHa2O8hoauMuB
TLSH T1E794E1143A90FA4FC85EDEB698540C109B70A4A7560BF347A8DB26ED894F7ED8F051E3
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/198783/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616fd698a9d585e6d52e962a/reports/6712ded0-e79a-43e4-b8c8-b88bcafadcaf/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4de03024-9bdf-4209-89c0-7c0fea74c86c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/873715
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 506139 Sample: czOxHskgIAQwZ8m.exe Startdate: 20/10/2021 Architecture: WINDOWS Score: 100 31 www.shopmew.com 2->31 33 www.captainscookcasino.com 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 6 other signatures 2->47 11 czOxHskgIAQwZ8m.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\czOxHskgIAQwZ8m.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 15 czOxHskgIAQwZ8m.exe 11->15         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 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 35 supportkey.xyz 162.0.235.145, 49824, 80 NAMECHEAP-NETUS Canada 18->35 37 www.egmetaverse.com 43.128.51.206, 49826, 80 LILLY-ASUS Japan 18->37 39 8 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Performs DNS queries to domains with low reputation 18->51 22 msdt.exe 18->22         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 22->53 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-10-20 08:43:05 UTC
AV detection:
14 of 43 (32.56%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qvvyo5niay4qan4kqfonapipsyumiklo3xmtvspjzvjcnelyyb4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:amb4 loader rat
Link:
https://tria.ge/reports/211020-kmkxnagge5/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.shopmew.com/amb4/
Unpacked files
SH256 hash:
2b603929d17147532c94c0033fd0a9c80e5671567d140b0689a943a4bd6f2979
MD5 hash:
9b1e2e559e2636185708e0d3778bbafc
SHA1 hash:
4a2b1bd83553eab363cfa389653ad797dcc55c41
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1d796b33-3e0b-461d-92eb-d8feac616488/
SH256 hash:
3761b454c1de8a196d23997d7c5571477777dc8bd507aab25d1dacc30d860b87
MD5 hash:
f755d8354a81873e539ea7f22addd151
SHA1 hash:
7db444fbba3a995538aea9f3673623278fcef352
Link:
https://www.unpac.me/results/1d796b33-3e0b-461d-92eb-d8feac616488/
SH256 hash:
6fee24a1398bb022d0c5b9059b9b21e7636fc3861866a583d0e49b7d0ca56d58
MD5 hash:
36e2528c3cb3ad299ea481283687cdd6
SHA1 hash:
1981340bc7be1aa8f78f942fc6f0724838e35a87
Link:
https://www.unpac.me/results/1d796b33-3e0b-461d-92eb-d8feac616488/
SH256 hash:
856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079
MD5 hash:
edb54a30972b862cfba8589bb1f67c7e
SHA1 hash:
7f3b9b36342bb863950e592063db38cd2c3f8bb9
Link:
https://www.unpac.me/results/1d796b33-3e0b-461d-92eb-d8feac616488/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079

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: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.

Malspam

Formbook

Executable exe 856b8775a8063900378a815cd03d0f9628c4296eddd93ac9e9cd52269178c079

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/198783/

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