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| File name: | crkl_cs18.exe |
| Full analysis: | https://app.any.run/tasks/ccc337a8-d33e-4993-b6e0-d8d5ee6fa5e5 |
| Verdict: | Malicious activity |
| Analysis date: | January 18, 2020, 03:54:34 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 8A5E5437E142EA0380875081B8FE095F |
| SHA1: | 0E6FBC1D5515D6646D66D7769B6BFCD810C20901 |
| SHA256: | 7C7A469ABF068C64A865A94B4C6976A7F87DB646C4714EECE6A17A83FCBD8A4B |
| SSDEEP: | 3072:XZm/5ISZbkihcLW41zDD2P+OjLWFvXTh8bgAiF5E/6vXW93Htfot2tCauquMqqDH:pA5b2LW4tM+DzVKgXW93Htfot2AFcqqG |
MALICIOUS
Changes the autorun value in the registry
- crkl_cs18.exe (PID: 592)
- crkl_cs18.exe (PID: 2500)
Loads the Task Scheduler COM API
- schtasks.exe (PID: 2400)
- schtasks.exe (PID: 2852)
- schtasks.exe (PID: 4024)
- schtasks.exe (PID: 1268)
- schtasks.exe (PID: 720)
- schtasks.exe (PID: 2772)
- schtasks.exe (PID: 2916)
- schtasks.exe (PID: 3116)
- schtasks.exe (PID: 3500)
- schtasks.exe (PID: 1708)
- schtasks.exe (PID: 1816)
- schtasks.exe (PID: 2056)
Uses Task Scheduler to run other applications
- crkl_cs18.exe (PID: 2500)
SUSPICIOUS
Application launched itself
- crkl_cs18.exe (PID: 592)
Executed via Task Scheduler
- vssadmin.EXE (PID: 3808)
- wbadmin.EXE (PID: 2408)
- wbadmin.EXE (PID: 1252)
- wmic.EXE (PID: 2876)
- bcdedit.EXE (PID: 3732)
- bcdedit.EXE (PID: 2372)
Executed as Windows Service
- vssvc.exe (PID: 292)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable Borland Delphi 7 (95.4) |
|---|---|---|
| .exe | | | Win32 Executable Delphi generic (2) |
| .dll | | | Win32 Dynamic Link Library (generic) (0.9) |
| .exe | | | Win32 Executable (generic) (0.6) |
| .exe | | | Win16/32 Executable Delphi generic (0.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 1992:06:20 00:22:17+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 2.25 |
| CodeSize: | 158208 |
| InitializedDataSize: | 36864 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x24264 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 19-Jun-1992 22:22:17 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0050 |
| Pages in file: | 0x0002 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x000F |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x001A |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000100 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 8 |
| Time date stamp: | 19-Jun-1992 22:22:17 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
CODE | 0x00001000 | 0x00026978 | 0x00026A00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.62837 |
DATA | 0x00028000 | 0x00003994 | 0x00003A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.80547 |
BSS | 0x0002C000 | 0x00B72DF9 | 0x00000000 | IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.idata | 0x00B9F000 | 0x00000F76 | 0x00001000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.76006 |
.tls | 0x00BA0000 | 0x0000000C | 0x00000000 | IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.rdata | 0x00BA1000 | 0x00000018 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 0.170146 |
.reloc | 0x00BA2000 | 0x00002A28 | 0x00002C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 6.60835 |
.rsrc | 0x00BA5000 | 0x00001800 | 0x00001800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 3.47025 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
4089 | 2.63447 | 200 | UNKNOWN | UNKNOWN | RT_STRING |
4090 | 3.26534 | 980 | UNKNOWN | UNKNOWN | RT_STRING |
4091 | 3.05755 | 344 | UNKNOWN | UNKNOWN | RT_STRING |
4092 | 3.0171 | 236 | UNKNOWN | UNKNOWN | RT_STRING |
4093 | 3.25818 | 524 | UNKNOWN | UNKNOWN | RT_STRING |
4094 | 3.18412 | 976 | UNKNOWN | UNKNOWN | RT_STRING |
4095 | 3.26889 | 884 | UNKNOWN | UNKNOWN | RT_STRING |
4096 | 3.16875 | 708 | UNKNOWN | UNKNOWN | RT_STRING |
DVCLAL | 4 | 16 | UNKNOWN | UNKNOWN | RT_RCDATA |
PACKAGEINFO | 5.28342 | 340 | UNKNOWN | UNKNOWN | RT_RCDATA |
Imports
advapi32.dll |
kernel32.dll |
mpr.dll |
oleaut32.dll |
shell32.dll |
user32.dll |
Total processes
78
Monitored processes
21
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 592 | "C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe" | C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 2500 | "C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe" "runas" | C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe | crkl_cs18.exe | |
User: admin Integrity Level: HIGH | ||||
| 2400 | "C:\Windows\System32\schtasks.exe" /Create /RU SYSTEM /SC ONCE /TN VssDataRestore /F /RL HIGHEST /TR "vssadmin delete shadows /all /quiet" /st 00:00 | C:\Windows\System32\schtasks.exe | — | crkl_cs18.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2852 | "C:\Windows\System32\schtasks.exe" /Run /tn VssDataRestore | C:\Windows\System32\schtasks.exe | — | crkl_cs18.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3808 | C:\Windows\system32\vssadmin.EXE delete shadows /all /quiet | C:\Windows\system32\vssadmin.EXE | — | taskeng.exe |
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Command Line Interface for Microsoft® Volume Shadow Copy Service Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 292 | C:\Windows\system32\vssvc.exe | C:\Windows\system32\vssvc.exe | — | services.exe |
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Microsoft® Volume Shadow Copy Service Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 1268 | "C:\Windows\System32\schtasks.exe" /Create /RU SYSTEM /SC ONCE /TN WBadminSystemRestore /F /RL HIGHEST /TR "wbadmin DELETE SYSTEMSTATEBACKUP -keepVersions:0" /st 00:00 | C:\Windows\System32\schtasks.exe | — | crkl_cs18.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 4024 | "C:\Windows\System32\schtasks.exe" /Run /tn WBadminSystemRestore | C:\Windows\System32\schtasks.exe | — | crkl_cs18.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2408 | C:\Windows\system32\wbadmin.EXE DELETE SYSTEMSTATEBACKUP -keepVersions:0 | C:\Windows\system32\wbadmin.EXE | — | taskeng.exe |
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Command Line Interface for Microsoft® BLB Backup Exit code: 4294967293 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2772 | "C:\Windows\System32\schtasks.exe" /Create /RU SYSTEM /SC ONCE /TN WBadminBackupRestore /F /RL HIGHEST /TR "wbadmin DELETE BACKUP -keepVersions:0" /st 00:00 | C:\Windows\System32\schtasks.exe | — | crkl_cs18.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
776
Read events
762
Write events
14
Delete events
0
Modification events
| (PID) Process: | (592) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 3300537927 |
Value: C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe | |||
| (PID) Process: | (592) crkl_cs18.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 903875 |
Value: 903875 | |||
| (PID) Process: | (592) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (592) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (2500) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 3300537927 |
Value: C:\Users\admin\AppData\Local\Temp\crkl_cs18.exe | |||
| (PID) Process: | (2500) crkl_cs18.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 2560102 |
Value: 2560102 | |||
| (PID) Process: | (2500) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2500) crkl_cs18.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (3732) bcdedit.EXE | Key: | HKEY_LOCAL_MACHINE\BCD00000000\Objects\{345b46fd-a9f9-11e7-a83c-e8a4f72b1d33}\Elements\16000009 |
| Operation: | write | Name: | Element |
Value: 00 | |||
| (PID) Process: | (2372) bcdedit.EXE | Key: | HKEY_LOCAL_MACHINE\BCD00000000\Objects\{345b46fd-a9f9-11e7-a83c-e8a4f72b1d33}\Elements\250000e0 |
| Operation: | write | Name: | Element |
Value: 0100000000000000 | |||
Executable files
0
Suspicious files
0
Text files
2
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2408 | wbadmin.EXE | C:\Windows\Logs\WindowsBackup\Wbadmin.1.etl | etl | |
MD5:6970934E9D24A3BF768155B6BE899EF4 | SHA256:A7D16F7B092CE8EF30BAD368D7F94AB750ED567FF4CD986EF8683EB0623AFE93 | |||
| 1252 | wbadmin.EXE | C:\Windows\Logs\WindowsBackup\Wbadmin.1.etl | etl | |
MD5:E6C97A3ED4FFD253247ED4CC1246BC72 | SHA256:3969ADB99C618367630DC04A5B4D51E2368701269697DDE585BDEBA2E2BAC7A4 | |||
| 592 | crkl_cs18.exe | C:\Users\admin\AppData\Local\Temp\3300537927 | text | |
MD5:D086E162F4A915B46C638DA244601E19 | SHA256:3D6788F7C9CF7F0D3EB3FB4D01A4E658236933716EF6BDACF762E249E7B9CEF2 | |||
| 592 | crkl_cs18.exe | C:\Users\admin\AppData\Local\Temp\how_to_decrypt.hta | html | |
MD5:D4216789C1CBEFB08489E82AEEF547E7 | SHA256:8C41E16D413F8A4F9B08A0B8ADC7BAA9D00A3211B3901AD51DA73E87B371B161 | |||
| 1252 | wbadmin.EXE | C:\Windows\Logs\WindowsBackup\Wbadmin.2.etl | etl | |
MD5:6970934E9D24A3BF768155B6BE899EF4 | SHA256:A7D16F7B092CE8EF30BAD368D7F94AB750ED567FF4CD986EF8683EB0623AFE93 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report