d981fe00432dc5aa059884558c02276379f4cadbb7054c23962cb71122342b9d

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2023 13:06

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General

Target

Decra.exe
Size

308KB
MD5

8df1195087daa119e81fd0cc529c88e5
SHA1

52f743d2fa6fa607278dac4a2bf7a3c054252c9f
SHA256

d981fe00432dc5aa059884558c02276379f4cadbb7054c23962cb71122342b9d
SHA512

2d141a3d6879f7b39b69f3d4acf0ee5faa28d786fdb538daeabd834cff344647985eff48747cf5e8061eb583b72ca33741399be43e73c92bf4e9d8b06dd108b3
SSDEEP

6144:kk4DdotiH8um78UhQyZ72VQShKLzuTHDZnvU4lYgfg:r61m7rhQyZiBV4gf

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4376 created 3168	4376	Decra.exe	47

Enumerates connected drives 3 TTPs 23 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)	\??\I:	Decra.exe
File opened (read-only)	\??\Q:	Decra.exe
File opened (read-only)	\??\T:	Decra.exe
File opened (read-only)	\??\W:	Decra.exe
File opened (read-only)	\??\K:	Decra.exe
File opened (read-only)	\??\O:	Decra.exe
File opened (read-only)	\??\S:	Decra.exe
File opened (read-only)	\??\V:	Decra.exe
File opened (read-only)	\??\Y:	Decra.exe
File opened (read-only)	\??\H:	Decra.exe
File opened (read-only)	\??\J:	Decra.exe
File opened (read-only)	\??\M:	Decra.exe
File opened (read-only)	\??\P:	Decra.exe
File opened (read-only)	\??\R:	Decra.exe
File opened (read-only)	\??\Z:	Decra.exe
File opened (read-only)	\??\A:	Decra.exe
File opened (read-only)	\??\B:	Decra.exe
File opened (read-only)	\??\E:	Decra.exe
File opened (read-only)	\??\G:	Decra.exe
File opened (read-only)	\??\L:	Decra.exe
File opened (read-only)	\??\N:	Decra.exe
File opened (read-only)	\??\U:	Decra.exe
File opened (read-only)	\??\X:	Decra.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 3856	4376	Decra.exe	87
PID 4376 wrote to memory of 3856	4376	Decra.exe	87
PID 4376 wrote to memory of 3856	4376	Decra.exe	87
PID 3856 wrote to memory of 1296	3856	Decra.exe	89
PID 3856 wrote to memory of 1296	3856	Decra.exe	89
PID 3856 wrote to memory of 1296	3856	Decra.exe	89
PID 4376 wrote to memory of 3312	4376	Decra.exe	92
PID 4376 wrote to memory of 3312	4376	Decra.exe	92
PID 4376 wrote to memory of 3312	4376	Decra.exe	92

System policy modification 1 TTPs 4 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	Decra.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	Decra.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	Decra.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	Decra.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3168
- C:\Users\Admin\AppData\Local\Temp\Decra.exe
  "C:\Users\Admin\AppData\Local\Temp\Decra.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Enumerates connected drives
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:4376
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c pause
    3⤵
    PID:3312
- C:\Users\Admin\AppData\Local\Temp\Decra.exe
  \\?\C:\Users\Admin\AppData\Local\Temp\Decra.exe -network
  2⤵
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3856
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c pause
    3⤵
    PID:1296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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