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Windows
Analysis Report
ekte.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Yara detected FormBook
.NET source code contains potential unpacker
AI detected suspicious sample
Adds a directory exclusion to Windows Defender
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Allocates memory with a write watch (potentially for evading sandboxes)
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Dropped file seen in connection with other malware
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE / OLE file has an invalid certificate
PE file contains more sections than normal
PE file contains sections with non-standard names
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w7x64
- ekte.exe (PID: 3408 cmdline:
"C:\Users\ user\Deskt op\ekte.ex e" MD5: A0F5D21AB28654F9310E591044950160) - powershell.exe (PID: 3520 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\Des ktop\ekte. exe" MD5: EB32C070E658937AA9FA9F3AE629B2B8) - powershell.exe (PID: 3584 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\eFDiSxe TfjUqTk.ex e" MD5: EB32C070E658937AA9FA9F3AE629B2B8) - schtasks.exe (PID: 3616 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\eFDi SxeTfjUqTk " /XML "C: \Users\use r\AppData\ Local\Temp \tmp47BA.t mp" MD5: 2003E9B15E1C502B146DAD2E383AC1E3) - ekte.exe (PID: 3752 cmdline:
"C:\Users\ user\Deskt op\ekte.ex e" MD5: A0F5D21AB28654F9310E591044950160) - BuhvZTwGQCD.exe (PID: 2424 cmdline:
"C:\Progra m Files (x 86)\MRHRLV jrcMJazhpu bNnYGXyfuC IwnJCyDGTM AAlqhcuDHJ PaYzen\Buh vZTwGQCD.e xe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - findstr.exe (PID: 728 cmdline:
"C:\Window s\SysWOW64 \findstr.e xe" MD5: 18F02C555FBC9885DF9DB77754D6BB9B) - BuhvZTwGQCD.exe (PID: 1564 cmdline:
"C:\Progra m Files (x 86)\MRHRLV jrcMJazhpu bNnYGXyfuC IwnJCyDGTM AAlqhcuDHJ PaYzen\Buh vZTwGQCD.e xe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 1756 cmdline:
"C:\Progra m Files (x 86)\Mozill a Firefox\ Firefox.ex e" MD5: C2D924CE9EA2EE3E7B7E6A7C476619CA)
- taskeng.exe (PID: 3828 cmdline:
taskeng.ex e {F504269 4-6DBB-443 1-8D77-CD3 0DFD414D8} S-1-5-21- 966771315- 3019405637 -367336477 -1006:user -PC\user:I nteractive :[1] MD5: 65EA57712340C09B1B0C427B4848AE05) - eFDiSxeTfjUqTk.exe (PID: 3868 cmdline:
C:\Users\u ser\AppDat a\Roaming\ eFDiSxeTfj UqTk.exe MD5: A0F5D21AB28654F9310E591044950160) - powershell.exe (PID: 3932 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\eFDiSxe TfjUqTk.ex e" MD5: EB32C070E658937AA9FA9F3AE629B2B8) - powershell.exe (PID: 4008 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\eFDiSxe TfjUqTk.ex e" MD5: EB32C070E658937AA9FA9F3AE629B2B8) - schtasks.exe (PID: 4084 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\eFDi SxeTfjUqTk " /XML "C: \Users\use r\AppData\ Local\Temp \tmp1A06.t mp" MD5: 2003E9B15E1C502B146DAD2E383AC1E3) - eFDiSxeTfjUqTk.exe (PID: 3056 cmdline:
"C:\Users\ user\AppDa ta\Roaming \eFDiSxeTf jUqTk.exe" MD5: A0F5D21AB28654F9310E591044950160)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 13 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
|
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: frack113: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Source: | Author: frack113: |
Persistence and Installation Behavior |
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Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-21T13:15:20.479155+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49167 | 3.33.130.190 | 80 | TCP |
2024-10-21T13:15:44.341147+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49173 | 185.174.173.22 | 80 | TCP |
2024-10-21T13:16:07.187952+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49177 | 162.0.238.246 | 80 | TCP |
2024-10-21T13:16:20.496951+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49181 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:34.567266+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49185 | 206.119.82.148 | 80 | TCP |
2024-10-21T13:16:48.792562+0200 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.22 | 49189 | 15.197.148.33 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-21T13:15:35.537377+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49170 | 185.174.173.22 | 80 | TCP |
2024-10-21T13:15:39.177209+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49171 | 185.174.173.22 | 80 | TCP |
2024-10-21T13:15:40.619644+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49172 | 185.174.173.22 | 80 | TCP |
2024-10-21T13:15:57.582707+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49174 | 162.0.238.246 | 80 | TCP |
2024-10-21T13:16:00.822682+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49175 | 162.0.238.246 | 80 | TCP |
2024-10-21T13:16:02.679402+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49176 | 162.0.238.246 | 80 | TCP |
2024-10-21T13:16:12.243108+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49178 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:15.421025+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49179 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:17.343047+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49180 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:25.531397+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49182 | 206.119.82.148 | 80 | TCP |
2024-10-21T13:16:29.267849+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49183 | 206.119.82.148 | 80 | TCP |
2024-10-21T13:16:30.703523+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49184 | 206.119.82.148 | 80 | TCP |
2024-10-21T13:16:39.635129+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49186 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:42.788385+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49187 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:44.720576+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49188 | 15.197.148.33 | 80 | TCP |
2024-10-21T13:16:53.831892+0200 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.22 | 49190 | 208.91.197.27 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-21T13:15:35.537377+0200 | 2856318 | 1 | A Network Trojan was detected | 192.168.2.22 | 49170 | 185.174.173.22 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Code function: | 0_2_00CA1E3F | |
Source: | Code function: | 10_2_00A5170F |
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