MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232
SHA3-384 hash: e788a455f18d728f88bd48b611fc66cc63f713603ff38541115134e38482916b016172268051e297e4ea5dc77f0a2866
SHA1 hash: 5f2a10653a2bc2ba19c4850405b4341c7f004b50
MD5 hash: 288e3e8bb981e08c2f5cf53a038731a9
humanhash: jig-spaghetti-single-network
File name:288e3e8bb981e08c2f5cf53a038731a9
Download: download sample
Signature Formbook
Create hunting rule
File size:224'280 bytes
First seen:2022-06-23 13:02:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'651 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:aRyN36oKLSQ41uGxa02bjPyvtgNsDag3E0lh:aY1jON6a0syvKsDaj
Threatray 2'119 similar samples on MalwareBazaar
TLSH T17624024637D0C871C96F4633A4CA840417F4F2A369A3DB575EAEF12C6B623EB28497D1
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282651/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
DNS request
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/62b4648c49d6271f1a7881c6/reports/d2de1ed7-fd43-42a5-a290-b13a17175f5d/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/7a4f1b7f-12f4-48ed-90a1-cfbe65f826ae
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1018653
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 651149 Sample: mxVrfE9Fw4 Startdate: 23/06/2022 Architecture: WINDOWS Score: 100 30 Malicious sample detected (through community Yara rule) 2->30 32 Antivirus detection for URL or domain 2->32 34 Yara detected FormBook 2->34 36 3 other signatures 2->36 10 mxVrfE9Fw4.exe 1 2->10         started        process3 file4 28 C:\Users\user\AppData\...\mxVrfE9Fw4.exe.log, ASCII 10->28 dropped 44 Writes to foreign memory regions 10->44 46 Allocates memory in foreign processes 10->46 48 Injects a PE file into a foreign processes 10->48 50 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->50 14 cvtres.exe 10->14         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 2 other signatures 14->58 17 explorer.exe 14->17 injected process8 process9 19 msdt.exe 17->19         started        signatures10 38 Modifies the context of a thread in another process (thread injection) 19->38 40 Maps a DLL or memory area into another process 19->40 42 Tries to detect virtualization through RDTSC time measurements 19->42 22 cmd.exe 1 19->22         started        24 explorer.exe 2 150 19->24         started        process11 process12 26 conhost.exe 22->26         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-23 13:03:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
13 of 26 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qoqkfib2x5mjmcpbt2e66si5srs5e3nqbrpe3m5ajwtbueq26iza._file
Verdict:
malicious
Similar samples:
20e8d60356d379f097703c9ee095fa61a33116ea175f3abddef9e37fa6fb7242
Formbook
229fb8fb9b2eaa6eace0bb84be382040031a0d6c3c17e9ab647bd6953b80cf81
Formbook
342968eb4b8de053a22beb6cfd0bf96bfa092eab26c351fc85f2c204f5869739
Formbook
347b2260600d99e1b3007aeaf18c01e4c5bb1d9f2b97eb371c6d2d69c8ee1169
Formbook
708b9ae34868a88d757269f4fb80d7a3aeef2a6c2372bf8e1e59d2135aa97cb6
Formbook
faa23cbf9a2c7cbbf545b14518c93af51f695d2f15c695a7770629af8f328285
Formbook
+ 2'109 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:mt88 loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220623-qaccmsfgg2/
Behaviour
Modifies Internet Explorer settings
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
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Adds policy Run key to start application
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
491b58cd14ab3e8d5c43f94a562342201d12c0ae0ef4900562525caf02342a3e
MD5 hash:
2940263c7ca3f82b3f9c7936b3128e58
SHA1 hash:
aa233f71dde2ca9030c4ab997245297c45f86fc5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/8ebfd170-5506-4c7d-8684-e29821a2c53e/
Parent samples :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 hash:
83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232
MD5 hash:
288e3e8bb981e08c2f5cf53a038731a9
SHA1 hash:
5f2a10653a2bc2ba19c4850405b4341c7f004b50
Link:
https://www.unpac.me/results/8ebfd170-5506-4c7d-8684-e29821a2c53e/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83a0a2a03abf/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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 83a0a2a03abf589609e19e89ef491d9465d26db00c5e4db3a04da61a121af232

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2247825/
  
URLhaus
https://urlhaus.abuse.ch/url/2247826/
Cape
Cape
https://www.capesandbox.com/analysis/282651/

Comments


Avatar
zbet commented on 2022-06-23 13:02:55 UTC

url : hxxp://103.167.92.57/_msoffice10/vbc.exe