Analysis
-
max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
03/04/2024, 10:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe
Resource
win7-20240221-en
General
-
Target
2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe
-
Size
1.8MB
-
MD5
ea4d1d81f1dda4f8b62d38affc1fab85
-
SHA1
00203d55c8158e7ac6747166cd1137fb17672d3f
-
SHA256
1e62eb0919dd9f98dde874657a820312e5f6d522fdf942328c39070273f16af5
-
SHA512
ff48a6ceb16472a678e1b2ce3a82027f6bdcce24cd733814ada900d7a97401ad85c7e70cc7b3dbc21f14a3b38d0d50e8f5f8764037fdc2b39d7dd3642a1c5d04
-
SSDEEP
49152:bKfuPS3ELNjV7yZxEfOfOgwf0rDmg27RnWGj:om92Zxwg7D527BWG
Malware Config
Signatures
-
Executes dropped EXE 2 IoCs
pid Process 480 Process not Found 2536 alg.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\System32\alg.exe 2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\Roaming\1d810657aad3ae89.bin alg.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 2172 2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2172 wrote to memory of 2812 2172 2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe 28 PID 2172 wrote to memory of 2812 2172 2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe 28 PID 2172 wrote to memory of 2812 2172 2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-03_ea4d1d81f1dda4f8b62d38affc1fab85_ryuk.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2172 -s 3282⤵PID:2812
-
-
C:\Windows\System32\alg.exeC:\Windows\System32\alg.exe1⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:2536
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1.5MB
MD58616ae5540f5d1a74b1d64364a21efb4
SHA1ab3c5d6989e69a432d68454fc6cc1b129e06fe05
SHA256178665e57ebe9fb603b326547b928a79fcf62762e9065247343a0b343f47d400
SHA512183518df6d6badc5c32f04dd2db89532508a53e7f6651c3e8757d187e963ea00e678b62ea1e10b4cfd9a6252b2ebf540a7a899195ef58ec42307dde12fb241b6