Analysis
-
max time kernel
149s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
02-01-2021 02:50
Static task
static1
Behavioral task
behavioral1
Sample
zrr4Nw19.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
zrr4Nw19.exe
Resource
win10v20201028
General
-
Target
zrr4Nw19.exe
-
Size
28KB
-
MD5
98f22cce467d54a330bbbce9a0261a5a
-
SHA1
6cbd7608018a7d503e653f444004ca525d90875c
-
SHA256
7e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f
-
SHA512
7f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8
Malware Config
Extracted
njrat
0.7d
FKA
15ea4944f270282d46a1f0dd4d332e8f
-
reg_key
15ea4944f270282d46a1f0dd4d332e8f
-
splitter
|'|'|
Signatures
-
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 3944 svchost.exe -
Modifies Windows Firewall 1 TTPs
-
Drops startup file 2 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15ea4944f270282d46a1f0dd4d332e8f.exe svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\15ea4944f270282d46a1f0dd4d332e8f.exe svchost.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\15ea4944f270282d46a1f0dd4d332e8f = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .." svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\15ea4944f270282d46a1f0dd4d332e8f = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .." svchost.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious use of AdjustPrivilegeToken 34 IoCs
Processes:
zrr4Nw19.exesvchost.exedescription pid process Token: SeDebugPrivilege 3084 zrr4Nw19.exe Token: SeDebugPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe Token: 33 3944 svchost.exe Token: SeIncBasePriorityPrivilege 3944 svchost.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
zrr4Nw19.exesvchost.exedescription pid process target process PID 3084 wrote to memory of 3944 3084 zrr4Nw19.exe svchost.exe PID 3084 wrote to memory of 3944 3084 zrr4Nw19.exe svchost.exe PID 3084 wrote to memory of 3944 3084 zrr4Nw19.exe svchost.exe PID 3944 wrote to memory of 1356 3944 svchost.exe netsh.exe PID 3944 wrote to memory of 1356 3944 svchost.exe netsh.exe PID 3944 wrote to memory of 1356 3944 svchost.exe netsh.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\zrr4Nw19.exe"C:\Users\Admin\AppData\Local\Temp\zrr4Nw19.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Roaming\svchost.exeMD5
98f22cce467d54a330bbbce9a0261a5a
SHA16cbd7608018a7d503e653f444004ca525d90875c
SHA2567e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f
SHA5127f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8
-
C:\Users\Admin\AppData\Roaming\svchost.exeMD5
98f22cce467d54a330bbbce9a0261a5a
SHA16cbd7608018a7d503e653f444004ca525d90875c
SHA2567e31b3a603afe3a04745f35987db0d90e2643676b920df2185e11ae06ad32a4f
SHA5127f2a7afcd1397f3f920da7b7585fdd948cff4b6e7944f83cd1bdc614d3db333a2c5dc2b3c85a61688d8d1e789ffb484425fa619e56d41a266eff2298f98d73f8
-
memory/1356-15-0x0000000000000000-mapping.dmp
-
memory/3084-2-0x0000000073940000-0x000000007402E000-memory.dmpFilesize
6.9MB
-
memory/3084-3-0x0000000000CF0000-0x0000000000CF1000-memory.dmpFilesize
4KB
-
memory/3084-5-0x0000000005520000-0x0000000005521000-memory.dmpFilesize
4KB
-
memory/3084-6-0x0000000005AC0000-0x0000000005AC1000-memory.dmpFilesize
4KB
-
memory/3944-7-0x0000000000000000-mapping.dmp
-
memory/3944-10-0x0000000073940000-0x000000007402E000-memory.dmpFilesize
6.9MB
-
memory/3944-16-0x00000000065E0000-0x00000000065E1000-memory.dmpFilesize
4KB
-
memory/3944-17-0x00000000057F0000-0x00000000057F1000-memory.dmpFilesize
4KB