MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0. 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 2 File information Comments
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SHA256 hash: 087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0
SHA3-384 hash: ae243670ad0479fa7855efce01f3c09999dc864fd957a83b0db1827a4983bf7fc3d9321ebe80ff7508f71ee79e3e4aa6
SHA1 hash: 3aa454c723b33b92b127deab275c982391571d9f
MD5 hash: de5211e24c666a4be88d96a7a64adc16
humanhash: alanine-carpet-single-single
File name:signed invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:408'576 bytes
First seen:2022-01-25 05:43:05 UTC
Last seen:2022-01-25 13:03:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:u+1E9bULQ+docf8FFVrRXqc1ZW9e/yGs:uXi7iZaeIM/l
Threatray 12'872 similar samples on MalwareBazaar
TLSH T18B94121A42ED8323DBBE3B3C98E0530A67F47520A172E4D7ADCE45A72DE3355870165B
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
3
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/222165/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.289.17561.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit greyware keylogger obfuscated packed
Link:
https://www.filescan.io/uploads/61ef8e250f8c757253e5309d/reports/c47ef82b-eca5-4df8-9ab4-3c2985a76ca5/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/91500176-c0ac-45c6-93a6-9bba51e93cce
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/926784
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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
Uses ipconfig to lookup or modify the Windows network settings
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: 559262 Sample: signed invoice.exe Startdate: 25/01/2022 Architecture: WINDOWS Score: 100 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 17 other signatures 2->56 10 signed invoice.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\...\lKJDCSXDcdswBS.exe, PE32 10->36 dropped 38 C:\...\lKJDCSXDcdswBS.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmpCC68.tmp, XML 10->40 dropped 42 C:\Users\user\...\signed invoice.exe.log, ASCII 10->42 dropped 62 Adds a directory exclusion to Windows Defender 10->62 64 Injects a PE file into a foreign processes 10->64 14 signed invoice.exe 10->14         started        17 powershell.exe 23 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 74 Modifies the context of a thread in another process (thread injection) 14->74 76 Maps a DLL or memory area into another process 14->76 78 Sample uses process hollowing technique 14->78 80 Queues an APC in another process (thread injection) 14->80 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 44 www.augustacrim.com 185.53.177.54, 49779, 80 TEAMINTERNET-ASDE Germany 21->44 46 shops.myshopify.com 23.227.38.74, 49777, 80 CLOUDFLARENETUS Canada 21->46 48 www.unlimitedlyfestylez.com 21->48 58 System process connects to network (likely due to code injection or exploit) 21->58 60 Uses ipconfig to lookup or modify the Windows network settings 21->60 29 ipconfig.exe 21->29         started        signatures10 process11 signatures12 66 Self deletion via cmd delete 29->66 68 Modifies the context of a thread in another process (thread injection) 29->68 70 Maps a DLL or memory area into another process 29->70 72 Tries to detect virtualization through RDTSC time measurements 29->72 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-25 01:05:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bb5ztljvn4rd3e6t5tbdyh5czueyyvwly2e5ytlgrpcqq6jql7ya._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
10aa7088156f972d7f44c8183c9b26c4ca290e5e1b92b59585a91b9946fb73e2
Formbook
123ff9f9a3f12261b2f1b201cf6c0c009b94ccab53d22f414113dc926f9eef63
Formbook
28323d3c8fd1339a7d4f0ebad6ff377545e88c15fdca9b2f21cdd7c72c07622e
Formbook
2e6c1e04f6f08de897e180ebf20a7ee0c5dc54e1c4041580386e24f8fbf67658
Formbook
711f3855c0fe6398f1fdb5a870de829c005b60cd4c90bd8ecae5780b9427716f
Formbook
73c029fbd27d0c281ac91d030160bd9ba859ab57db73b5fd7011f470ab90fc8e
Formbook
942196f0ca8e1253e7dd381b1855e4b56b8874a2d5def9d472507ddaf306ac86
Formbook
a92ecb180e390074e280143710c718ab92687c893701b7c535f704231c92175f
Formbook
cd3932d4db9fcac1b45dec936ab8e2b4e0fa3f5fc58abf418887962931000807
Formbook
f0711e7499ee1ad5e52c7e11db0b6881eab2445f5f50e5fc90efba03a9bf299b
Formbook
+ 12'862 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:jy93 rat spyware stealer trojan
Link:
https://tria.ge/reports/220125-ge6mlshgb4/
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
Unpacked files
SH256 hash:
3467f177aa3dea94c5aeae2d1589bb67c552adaa21f1c7669021357f93ca1756
MD5 hash:
319883764d0a7c2cf57b219eea70c501
SHA1 hash:
9111af561da1e625855b16e4560bf3291f03299b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/10251e9b-ba32-4615-880a-a0a3a914c08f/
Parent samples :
087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0
d1eddd348ee11e3da00c9f45fa1fb94e3b174c8abe780a7d764bd22f62980e8e
8323bfa811d207521f4e833af08813c6a4431f9c28f6d07279b656a6a60e57ae
SH256 hash:
8325a5cf7942bb46ac528c836b79180c05d71a4e7de108693d303d56bcc5def1
MD5 hash:
efdf2c54a74297c24bc73285376c432b
SHA1 hash:
564f25afb6c5599cdcd5fafaff32c1475e581af4
Link:
https://www.unpac.me/results/10251e9b-ba32-4615-880a-a0a3a914c08f/
SH256 hash:
8e52dc673c64daf2fa0f0a52f20852293365b40d00b31c27b805a1a02e6af46f
MD5 hash:
57397ff08a9ee6bb066a9b706fe0beb2
SHA1 hash:
22928fb1f99285de087d9294ae327ac4a598293e
Link:
https://www.unpac.me/results/10251e9b-ba32-4615-880a-a0a3a914c08f/
SH256 hash:
087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0
MD5 hash:
de5211e24c666a4be88d96a7a64adc16
SHA1 hash:
3aa454c723b33b92b127deab275c982391571d9f
Link:
https://www.unpac.me/results/10251e9b-ba32-4615-880a-a0a3a914c08f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/087b99ad356f/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/087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0

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

r00 1b23e4bb52bd04caa2be328d8338c4f37858dc7062fe7f18b0c4458894600d24

Formbook

Executable exe 087b99ad356f223d93d3ecc23c1fa2cd098c56cbc689dc4d668bc50879305ff0

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 1b23e4bb52bd04caa2be328d8338c4f37858dc7062fe7f18b0c4458894600d24
Cape
Cape
https://www.capesandbox.com/analysis/222165/

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