5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381

General

Target

5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Size

96KB
MD5

6f04b5d58a6b84ca41f96375003caf4b
SHA1

cfcf538a4235a6ca21ad6e14f299b6bbb694027b
SHA256

5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381
SHA512

be2f1f32197ae765721e86358f488097c728df35e96dc6f9f84a2749123a8b3f18eef59b74dd9aab04d2d9bc65a37a59316c6956480600d8b0a4edf58482d4e1
SSDEEP

1536:KIZ1NCPxqZZNjfNopseeGfLnZuTxHiD1Syxry6f6NLT6/H1ulAHJYNqcit7:KqWxqZ/rNHee9qrz6N6H1owPVt7

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	cielio.exe

Executes dropped EXE 2 IoCs

pid	Process
4972	cielio.exe
4884	cielio.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe

Adds Run key to start application 2 TTPs 11 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /k"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /l"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /h"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /g"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /s"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /h"	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /o"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /f"	cielio.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cielio = "C:\\Users\\Admin\\cielio.exe /p"	cielio.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	cielio.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	cielio.exe

Drops autorun.inf file 1 TTPs 1 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\Users\Admin\c\autorun.inf	cielio.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3172 set thread context of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 4972 set thread context of 4884	4972	cielio.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe
4884	cielio.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
4972	cielio.exe
4884	cielio.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 3172 wrote to memory of 4216	3172	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	81
PID 4216 wrote to memory of 4972	4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	90
PID 4216 wrote to memory of 4972	4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	90
PID 4216 wrote to memory of 4972	4216	5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe	90
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91
PID 4972 wrote to memory of 4884	4972	cielio.exe	91

C:\Users\Admin\AppData\Local\Temp\5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
"C:\Users\Admin\AppData\Local\Temp\5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\AppData\Local\Temp\5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381.exe
  71
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Checks computer location settings
  - Adds Run key to start application
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4216
- - C:\Users\Admin\cielio.exe
    "C:\Users\Admin\cielio.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4972
  - - C:\Users\Admin\cielio.exe
      71
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Executes dropped EXE
      Adds Run key to start application
      Maps connected drives based on registry
      Drops autorun.inf file
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of SetWindowsHookEx
      PID:4884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\cielio.exe

Filesize
96KB

MD5
6f04b5d58a6b84ca41f96375003caf4b

SHA1
cfcf538a4235a6ca21ad6e14f299b6bbb694027b

SHA256
5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381

SHA512
be2f1f32197ae765721e86358f488097c728df35e96dc6f9f84a2749123a8b3f18eef59b74dd9aab04d2d9bc65a37a59316c6956480600d8b0a4edf58482d4e1

Download Submit
C:\Users\Admin\cielio.exe

Filesize
96KB

MD5
6f04b5d58a6b84ca41f96375003caf4b

SHA1
cfcf538a4235a6ca21ad6e14f299b6bbb694027b

SHA256
5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381

SHA512
be2f1f32197ae765721e86358f488097c728df35e96dc6f9f84a2749123a8b3f18eef59b74dd9aab04d2d9bc65a37a59316c6956480600d8b0a4edf58482d4e1

Download Submit
C:\Users\Admin\cielio.exe

Filesize
96KB

MD5
6f04b5d58a6b84ca41f96375003caf4b

SHA1
cfcf538a4235a6ca21ad6e14f299b6bbb694027b

SHA256
5b6bf0e3d152871891972b1851a75a662f794dfc5f105f85a2c59ed0c40cb381

SHA512
be2f1f32197ae765721e86358f488097c728df35e96dc6f9f84a2749123a8b3f18eef59b74dd9aab04d2d9bc65a37a59316c6956480600d8b0a4edf58482d4e1

Download Submit
memory/4216-135-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4216-137-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4216-140-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4216-141-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4884-154-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4884-155-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads