MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677
SHA3-384 hash: fc2345bffdd0473032a8fac9cca7824c43a9ddd6d01102e7f3e18d74fd85e360f76b4517cb300b4aed58fcbedc6cd00d
SHA1 hash: 848fc65f86312afe7db3f41ab8b3a91f8630489b
MD5 hash: 1c50787a04ab8a7f9dc97b054e3db289
humanhash: delta-bulldog-batman-connecticut
File name:IN02672Q0583765NBOM.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:519'680 bytes
First seen:2022-04-02 13:50:05 UTC
Last seen:2022-04-04 05:49:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:dwi5SwR6A44KuWyFLrSVMSCA+0N+luGw3j7cjU8Tmb01F:kEDPFPWMSCq+UVfS3
TLSH T185B4C067D7F9DF1BD0BE43F91420C03A3AF1E892B610C604AEF619ABE9E67950C44752
File icon (PE):PE icon
dhash icon 3e3d697e3c3c1f1f (11 x AgentTesla, 7 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
621
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.33152.27484.11005.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/624854c69253b276b7cd07f2/reports/abb5497a-efc8-4b86-9d8c-069cbac480a8/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/773dadda-f81d-4902-a15f-b81ae07ca6a6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/969406
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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
Sigma detected: Application Executed Non-Executable Extension
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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 signatures2 2 Behavior Graph ID: 601893 Sample: IN02672Q0583765NBOM.exe Startdate: 02/04/2022 Architecture: WINDOWS Score: 100 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 12 other signatures 2->47 10 IN02672Q0583765NBOM.exe 3 2->10         started        process3 file4 29 C:\Users\user\...\IN02672Q0583765NBOM.exe.log, ASCII 10->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 10->61 63 Injects a PE file into a foreign processes 10->63 14 IN02672Q0583765NBOM.exe 10->14         started        signatures5 process6 signatures7 65 Modifies the context of a thread in another process (thread injection) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Sample uses process hollowing technique 14->69 71 Queues an APC in another process (thread injection) 14->71 17 explorer.exe 14->17 injected process8 dnsIp9 31 daisanthecowardliterature.com 162.241.169.16, 49866, 80 UNIFIEDLAYER-AS-1US United States 17->31 33 www.fastbest.host 45.8.125.9, 49868, 80 SELECTELRU Russian Federation 17->33 35 23 other IPs or domains 17->35 49 System process connects to network (likely due to code injection or exploit) 17->49 51 Performs DNS queries to domains with low reputation 17->51 21 rundll32.exe 12 17->21         started        signatures10 process11 dnsIp12 37 www.syllyl.com 21->37 39 www.disignmagazine.com 21->39 53 System process connects to network (likely due to code injection or exploit) 21->53 55 Self deletion via cmd delete 21->55 57 Modifies the context of a thread in another process (thread injection) 21->57 59 2 other signatures 21->59 25 cmd.exe 1 21->25         started        signatures13 process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-01 18:58:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rqlgqkkv3gbopvgb5i46xhboqtowkxdmaiwpiqdu53gfie2maz3q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:e0ep loader rat suricata
Link:
https://tria.ge/reports/220402-q5sywaadek/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
4ce3b94228900267a7b8b15d58dd97a397e6c5a040a8ba2e8efacc2d796bdba9
MD5 hash:
f31e3460a181cdea39d8a4ff9bc0bfef
SHA1 hash:
b7b5175d7967390160481f64131139ea06bd6bdf
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/cb40717a-4557-4196-a5f3-77a6b5a163e8/
Parent samples :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 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/cb40717a-4557-4196-a5f3-77a6b5a163e8/
SH256 hash:
8b31619ac96eb6b99d8b6b2de2f57dce16803348447f31fa3534621b890d825b
MD5 hash:
7c6053901eefdadb203b9583331032d4
SHA1 hash:
2fa2c26c5662623a4421619dc5b235b18ea864df
Link:
https://www.unpac.me/results/cb40717a-4557-4196-a5f3-77a6b5a163e8/
SH256 hash:
8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677
MD5 hash:
1c50787a04ab8a7f9dc97b054e3db289
SHA1 hash:
848fc65f86312afe7db3f41ab8b3a91f8630489b
Link:
https://www.unpac.me/results/cb40717a-4557-4196-a5f3-77a6b5a163e8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677

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.

Malspam

Formbook

Executable exe 8c16682955d982e7d4c1ea39eb9c2e84dd655c6c022cf44074eecc54134c0677

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment

Comments