bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1

Analysis

max time kernel
19s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-10-2022 13:39

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General

Target

bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe
Size

72KB
MD5

607ff124d59d031ac081c8210f941826
SHA1

4d557a6584e6500b337a52ea45e3e7114c50e0cd
SHA256

bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1
SHA512

de7078e6f0afb9237944024cb840d98b0071b33c449a76586fde80a14e1b12e8a0776bf1019313de35020abc7025bd4c4ee341ee7dde1250ed87a1f28cbe27aa
SSDEEP

1536:eK086JErWvey9wQuQtHcTBRbCJs2E64KtL6:e1JErWm2wQnVJfEMZ6

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1240 takeown.exe
1768 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1240 takeown.exe
1768 icacls.exe

pid	process
1240	takeown.exe
1768	icacls.exe

pid	process
1240	takeown.exe
1768	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

description	ioc	process
File created	C:\Windows\SysWOW64\gwkoi.exe	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe
File opened for modification	C:\Windows\SysWOW64\gwkoi.exe	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

pid process

1664 bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

pid	process
1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe

description	pid	process	target process
PID 1664 wrote to memory of 1240	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	takeown.exe
PID 1664 wrote to memory of 1240	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	takeown.exe
PID 1664 wrote to memory of 1240	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	takeown.exe
PID 1664 wrote to memory of 1240	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	takeown.exe
PID 1664 wrote to memory of 1768	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	icacls.exe
PID 1664 wrote to memory of 1768	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	icacls.exe
PID 1664 wrote to memory of 1768	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	icacls.exe
PID 1664 wrote to memory of 1768	1664	bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe
"C:\Users\Admin\AppData\Local\Temp\bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\gwkoi.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1240

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\gwkoi.exe" /grant SYSTEM:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1768

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Permissions Modification

T1222

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\gwkoi.exe
Filesize
72KB

MD5
607ff124d59d031ac081c8210f941826

SHA1
4d557a6584e6500b337a52ea45e3e7114c50e0cd

SHA256
bf487f93a9d391ad74336cae84b32b74ed83ea257546e3bf93059154a646b1c1

SHA512
de7078e6f0afb9237944024cb840d98b0071b33c449a76586fde80a14e1b12e8a0776bf1019313de35020abc7025bd4c4ee341ee7dde1250ed87a1f28cbe27aa

Download Submit
memory/1240-57-0x0000000000000000-mapping.dmp

Download
memory/1664-56-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1768-59-0x0000000000000000-mapping.dmp

Download