MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee
SHA3-384 hash: 75da91002e672529f2b0f2ba5b09d80a6e90fce6148745f5e6bc1359e98e9c965ca375ed056b0bc1ab2a7118d9e98da8
SHA1 hash: 49dfd4b26e8c9f2cc76df24c55e6616f438bf422
MD5 hash: 4f2cf362036af705349843df3419ae5d
humanhash: louisiana-uranus-kansas-uniform
File name:LVvoucher.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:797'696 bytes
First seen:2022-01-28 08:29:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:W5lo9tzXDZx/afvpPfCp4XADUEQITkT2kfaOO:CoXrDZxqpfO3DUEQIkf3
Threatray 9'862 similar samples on MalwareBazaar
TLSH T16C055C79CE867900D136B8F0401BF4A406223EA217E78799CA7BFE0175FAA47DD7152E
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
208
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
LVvoucher.exe
Verdict:
Malicious activity
Analysis date:
2022-01-28 10:55:00 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/ca18946d-9955-42c4-af52-9b9b7a02fb1e

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/224924/
Detection(s):
SecuriteInfo.com.PUA.EmbeddedEXE-1.UNOFFICIAL
Create hunting rule

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
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/61f3a9996a7929f66a1eae9c/reports/34006886-06c1-431e-a2c1-ab8bb675570f/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/17618666-5a01-432a-bb40-a81cc4e834a7
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/929583
Signature
.NET source code contains potential unpacker
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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 signatures2 2 Behavior Graph ID: 562062 Sample: LVvoucher.exe Startdate: 28/01/2022 Architecture: WINDOWS Score: 100 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 13 other signatures 2->56 10 LVvoucher.exe 7 2->10         started        process3 file4 38 C:\Users\user\AppData\Roaming\UcgxBJ.exe, PE32 10->38 dropped 40 C:\Users\user\...\UcgxBJ.exe:Zone.Identifier, ASCII 10->40 dropped 42 C:\Users\user\AppData\Local\...\tmp57C7.tmp, XML 10->42 dropped 44 C:\Users\user\AppData\...\LVvoucher.exe.log, ASCII 10->44 dropped 60 Uses schtasks.exe or at.exe to add and modify task schedules 10->60 62 Adds a directory exclusion to Windows Defender 10->62 64 Tries to detect virtualization through RDTSC time measurements 10->64 14 LVvoucher.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        21 LVvoucher.exe 10->21         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 Queues an APC in another process (thread injection) 14->72 23 explorer.exe 14->23 injected 27 conhost.exe 17->27         started        29 conhost.exe 19->29         started        process8 dnsIp9 46 sistemaparadrogaria.com 162.214.116.198, 49797, 80 UNIFIEDLAYER-AS-1US United States 23->46 48 www.sistemaparadrogaria.com 23->48 58 System process connects to network (likely due to code injection or exploit) 23->58 31 cmstp.exe 23->31         started        signatures10 process11 signatures12 74 Self deletion via cmd delete 31->74 76 Modifies the context of a thread in another process (thread injection) 31->76 78 Maps a DLL or memory area into another process 31->78 80 Tries to detect virtualization through RDTSC time measurements 31->80 34 cmd.exe 1 31->34         started        process13 process14 36 conhost.exe 34->36         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-28 08:30:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=o5qe4jsgxzh3lgqw4m6klz4kopwfarny6hgon5n2c3argbfrylxa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
123ff9f9a3f12261b2f1b201cf6c0c009b94ccab53d22f414113dc926f9eef63
Formbook
2d40f472fa610ec9068b1bb4d057ca2293e2389fe7915acd2237b6df85e9b6b3
Formbook
2e6c1e04f6f08de897e180ebf20a7ee0c5dc54e1c4041580386e24f8fbf67658
Formbook
7f2a69c94ab6e8b1d0b77a06a04cf40af21aac11a7c3f142c5b6c9efba12fc7a
Formbook
942196f0ca8e1253e7dd381b1855e4b56b8874a2d5def9d472507ddaf306ac86
Formbook
beccec456cf3e74a220ae1c8fa65cc0f4ddef57bee5d4f2ec71ad7b99da52369
Formbook
c4771044788147e2c9acb052dfbf6d291400add558b59ad0e6d0c5f42f3ec3e1
Formbook
cd3932d4db9fcac1b45dec936ab8e2b4e0fa3f5fc58abf418887962931000807
Formbook
f0711e7499ee1ad5e52c7e11db0b6881eab2445f5f50e5fc90efba03a9bf299b
Formbook
+ 9'852 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oh75 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220128-kd64jahhaj/
Behaviour
Creates scheduled task(s)
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
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
0244953d4887a39ba67522c6a35d46dc0031fa7e95605c131c2311a2eb7c1073
MD5 hash:
57d726dbbd803ed2f921cda9890b9f27
SHA1 hash:
0bb67b584d94617daabb8976801f4cfa70a10bc7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/eab9fe06-b012-4dc6-be73-9375b010d5a9/
Parent samples :
f353d09bde413e8d9e59d303e46a1596b2a06958207fef3712854331f5755871
7f2a69c94ab6e8b1d0b77a06a04cf40af21aac11a7c3f142c5b6c9efba12fc7a
01622d3e6d14184769fc2b052e32588b7bbd86f5a61e511f395db4695d7018a9
77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee
SH256 hash:
5247926388ed51a1178cb1de85bc5df1443c240ace43d7d9386edf8d7fceec02
MD5 hash:
9a6cb543f17cc6f61c016dbc8a331bc2
SHA1 hash:
62210e9d0f4d5b8101886a336feb3e1ae0eaf824
Link:
https://www.unpac.me/results/eab9fe06-b012-4dc6-be73-9375b010d5a9/
SH256 hash:
4165ab738c3a6e37bc62d31b51d3781c773ca2345185dd480a24ea8d7253ca10
MD5 hash:
a5d036fb19f2e28c46b08661bf3471b9
SHA1 hash:
3a0074f85ee98d01704f5af89957876193d7df6b
Link:
https://www.unpac.me/results/eab9fe06-b012-4dc6-be73-9375b010d5a9/
SH256 hash:
77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee
MD5 hash:
4f2cf362036af705349843df3419ae5d
SHA1 hash:
49dfd4b26e8c9f2cc76df24c55e6616f438bf422
Link:
https://www.unpac.me/results/eab9fe06-b012-4dc6-be73-9375b010d5a9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/77604e2646be/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/77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee

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

rar 36d8a4369922f9ff965bc763a9f8ee775b4e4377fcd0d60ffdd58e742209f5d4

Formbook

Executable exe 77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 36d8a4369922f9ff965bc763a9f8ee775b4e4377fcd0d60ffdd58e742209f5d4
Cape
Cape
https://www.capesandbox.com/analysis/224924/

Comments