24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb

Analysis

max time kernel
148s
max time network
127s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/10/2022, 02:53

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General

Target

24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
Size

234KB
MD5

6939fe26996107774c4f5f53139f6bf0
SHA1

6e3520d92e9e3d3ea17ac02364433134a2409a6e
SHA256

24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb
SHA512

1a058304e0111679c5fdff2f97c988bda5deec3604938c898ab8559296404858a24c9f7d0df8ee4486f41278beea319cc69b3810bd947d0ca68b5fd8dabe117a
SSDEEP

3072:H7ujS5TtVfzvt4Q4RXSGi0nYTLpRUr94R1R1oiiFF+ZObMzqdJKtSL:NTDOzRXvYROk2iiIObMzq+0

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	celin.exe

Executes dropped EXE 1 IoCs

pid	Process
932	celin.exe

Loads dropped DLL 2 IoCs

pid	Process
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe

Adds Run key to start application 2 TTPs 14 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /h"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /e"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /q"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /j"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /b"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /n"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /g"	celin.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /m"	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /m"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /t"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /u"	celin.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\celin = "C:\\Users\\Admin\\celin.exe /c"	celin.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	celin.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	celin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.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	celin.exe

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 52 IoCs

pid	Process
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe
932	celin.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
932	celin.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 932	2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe	28
PID 2020 wrote to memory of 932	2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe	28
PID 2020 wrote to memory of 932	2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe	28
PID 2020 wrote to memory of 932	2020	24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe	28

C:\Users\Admin\AppData\Local\Temp\24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe
"C:\Users\Admin\AppData\Local\Temp\24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\celin.exe
  "C:\Users\Admin\celin.exe"
  2⤵
  - 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:932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\celin.exe

Filesize
234KB

MD5
6939fe26996107774c4f5f53139f6bf0

SHA1
6e3520d92e9e3d3ea17ac02364433134a2409a6e

SHA256
24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb

SHA512
1a058304e0111679c5fdff2f97c988bda5deec3604938c898ab8559296404858a24c9f7d0df8ee4486f41278beea319cc69b3810bd947d0ca68b5fd8dabe117a

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

Filesize
234KB

MD5
6939fe26996107774c4f5f53139f6bf0

SHA1
6e3520d92e9e3d3ea17ac02364433134a2409a6e

SHA256
24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb

SHA512
1a058304e0111679c5fdff2f97c988bda5deec3604938c898ab8559296404858a24c9f7d0df8ee4486f41278beea319cc69b3810bd947d0ca68b5fd8dabe117a

Download Submit
\Users\Admin\celin.exe

Filesize
234KB

MD5
6939fe26996107774c4f5f53139f6bf0

SHA1
6e3520d92e9e3d3ea17ac02364433134a2409a6e

SHA256
24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb

SHA512
1a058304e0111679c5fdff2f97c988bda5deec3604938c898ab8559296404858a24c9f7d0df8ee4486f41278beea319cc69b3810bd947d0ca68b5fd8dabe117a

Download Submit
\Users\Admin\celin.exe

Filesize
234KB

MD5
6939fe26996107774c4f5f53139f6bf0

SHA1
6e3520d92e9e3d3ea17ac02364433134a2409a6e

SHA256
24659e867bd7aefc21e63df8230cbb55cdadd29cacdd5bf7c9ef7dcd69bf19eb

SHA512
1a058304e0111679c5fdff2f97c988bda5deec3604938c898ab8559296404858a24c9f7d0df8ee4486f41278beea319cc69b3810bd947d0ca68b5fd8dabe117a

Download Submit
memory/2020-56-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download