684e04a45383188f82f8c000490673060c629c15f6d61c031edb13df953712b9

General

Target

37992ee9284d0caf1738f37f3a18cdcbe028c731.exe
Size

852KB
MD5

87b78ec2010a39347f141adeede01628
SHA1

37992ee9284d0caf1738f37f3a18cdcbe028c731
SHA256

684e04a45383188f82f8c000490673060c629c15f6d61c031edb13df953712b9
SHA512

3a65517ef4d4cc5c3380dc8cfab946e8aeca12fc6a48f54fa4f2f42aa2aca41b9ac5fd76be29315de05c61095a703c53ae335fa6572c22aab42d8d0f54869a97
SSDEEP

24576:HbfjXLtl29eZFiG6SKPEfFR8LTQpfILi0aW:n7tc90Fp64fX8vQqLi

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
388	isecurity.exe

Loads dropped DLL 3 IoCs

pid	Process
1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe
1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe
1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	isecurity.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Internet Security = "C:\\ProgramData\\isecurity.exe"	isecurity.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\S:	isecurity.exe
File opened (read-only)	\??\V:	isecurity.exe
File opened (read-only)	\??\Y:	isecurity.exe
File opened (read-only)	\??\F:	isecurity.exe
File opened (read-only)	\??\L:	isecurity.exe
File opened (read-only)	\??\P:	isecurity.exe
File opened (read-only)	\??\R:	isecurity.exe
File opened (read-only)	\??\G:	isecurity.exe
File opened (read-only)	\??\N:	isecurity.exe
File opened (read-only)	\??\O:	isecurity.exe
File opened (read-only)	\??\U:	isecurity.exe
File opened (read-only)	\??\M:	isecurity.exe
File opened (read-only)	\??\Q:	isecurity.exe
File opened (read-only)	\??\X:	isecurity.exe
File opened (read-only)	\??\Z:	isecurity.exe
File opened (read-only)	\??\E:	isecurity.exe
File opened (read-only)	\??\H:	isecurity.exe
File opened (read-only)	\??\I:	isecurity.exe
File opened (read-only)	\??\J:	isecurity.exe
File opened (read-only)	\??\K:	isecurity.exe
File opened (read-only)	\??\T:	isecurity.exe
File opened (read-only)	\??\W:	isecurity.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	isecurity.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 24 IoCs

pid	Process
1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe

Suspicious use of FindShellTrayWindow 12 IoCs

pid	Process
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe

Suspicious use of SendNotifyMessage 12 IoCs

pid	Process
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe
388	isecurity.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
388	isecurity.exe
388	isecurity.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 388	1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe	27
PID 1732 wrote to memory of 388	1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe	27
PID 1732 wrote to memory of 388	1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe	27
PID 1732 wrote to memory of 388	1732	37992ee9284d0caf1738f37f3a18cdcbe028c731.exe	27

C:\Users\Admin\AppData\Local\Temp\37992ee9284d0caf1738f37f3a18cdcbe028c731.exe
"C:\Users\Admin\AppData\Local\Temp\37992ee9284d0caf1738f37f3a18cdcbe028c731.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1732
- C:\ProgramData\isecurity.exe
  C:\ProgramData\isecurity.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:388

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\isecurity.exe

Filesize
844KB

MD5
3c3c187ffc8ea535683ca2e0d65fa40a

SHA1
7c386811352dc5ce71927e70009cda5361595c5b

SHA256
7a23bb32f47126a01e9a8ca15d4de040bccf671ead03b6ce2a69ee1f3ea9dccf

SHA512
768ecdf333fbc0308dab9a20d1685446f6340e5e102aab901dfe2dccce2ef1604387225ba8b3b3c2685e9916c943297d9e57b28727334cb253e94f2aa0e5f3ea

Download Submit
\ProgramData\isecurity.exe

Filesize
844KB

MD5
3c3c187ffc8ea535683ca2e0d65fa40a

SHA1
7c386811352dc5ce71927e70009cda5361595c5b

SHA256
7a23bb32f47126a01e9a8ca15d4de040bccf671ead03b6ce2a69ee1f3ea9dccf

SHA512
768ecdf333fbc0308dab9a20d1685446f6340e5e102aab901dfe2dccce2ef1604387225ba8b3b3c2685e9916c943297d9e57b28727334cb253e94f2aa0e5f3ea

Download Submit
\ProgramData\isecurity.exe

Filesize
844KB

MD5
3c3c187ffc8ea535683ca2e0d65fa40a

SHA1
7c386811352dc5ce71927e70009cda5361595c5b

SHA256
7a23bb32f47126a01e9a8ca15d4de040bccf671ead03b6ce2a69ee1f3ea9dccf

SHA512
768ecdf333fbc0308dab9a20d1685446f6340e5e102aab901dfe2dccce2ef1604387225ba8b3b3c2685e9916c943297d9e57b28727334cb253e94f2aa0e5f3ea

Download Submit
\ProgramData\isecurity.exe

Filesize
844KB

MD5
3c3c187ffc8ea535683ca2e0d65fa40a

SHA1
7c386811352dc5ce71927e70009cda5361595c5b

SHA256
7a23bb32f47126a01e9a8ca15d4de040bccf671ead03b6ce2a69ee1f3ea9dccf

SHA512
768ecdf333fbc0308dab9a20d1685446f6340e5e102aab901dfe2dccce2ef1604387225ba8b3b3c2685e9916c943297d9e57b28727334cb253e94f2aa0e5f3ea

Download Submit
memory/388-62-0x0000000000400000-0x0000000000A34000-memory.dmp

Filesize
6.2MB

Download
memory/388-65-0x0000000000400000-0x0000000000A34000-memory.dmp

Filesize
6.2MB

Download
memory/388-66-0x0000000000400000-0x0000000000A34000-memory.dmp

Filesize
6.2MB

Download
memory/1732-54-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/1732-55-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download
memory/1732-64-0x0000000000400000-0x000000000050D000-memory.dmp

Filesize
1.1MB

Download

Analysis

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