dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3

Analysis

max time kernel
40s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07-11-2022 01:08

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General

Target

dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe
Size

76KB
MD5

098a49e0eea24ae4b9c8f01c4ecc6410
SHA1

8a16646bfcc53306a7111deb7a7c2fc57a052146
SHA256

dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3
SHA512

bcbcecf70a19440a2a912a82999466c3ae0d7ed606b103c04b3e2cd7ade0c39ec03b3e3f4e699dfca8abc1339b19b991a0083a8690e0b8c45cc759474f88b681
SSDEEP

768:AjpsO93EjYWI5msZASgPFnov7RrSUsuj0t5VUYStWsLZE8ZimI+uFFeVsVX1:Ajp1tQu7RxOU6vnCE1

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1696 takeown.exe
1760 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1696 takeown.exe
1760 icacls.exe

pid	process
1696	takeown.exe
1760	icacls.exe

pid	process
1696	takeown.exe
1760	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

description	ioc	process
File created	C:\Windows\SysWOW64\irikx.exe	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe
File opened for modification	C:\Windows\SysWOW64\irikx.exe	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

pid process

1988 dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

pid	process
1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe

description	pid	process	target process
PID 1988 wrote to memory of 1696	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	takeown.exe
PID 1988 wrote to memory of 1696	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	takeown.exe
PID 1988 wrote to memory of 1696	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	takeown.exe
PID 1988 wrote to memory of 1696	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	takeown.exe
PID 1988 wrote to memory of 1760	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	icacls.exe
PID 1988 wrote to memory of 1760	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	icacls.exe
PID 1988 wrote to memory of 1760	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	icacls.exe
PID 1988 wrote to memory of 1760	1988	dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe
"C:\Users\Admin\AppData\Local\Temp\dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\irikx.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1696

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\irikx.exe" /grant SYSTEM:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1760

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\irikx.exe
Filesize
76KB

MD5
098a49e0eea24ae4b9c8f01c4ecc6410

SHA1
8a16646bfcc53306a7111deb7a7c2fc57a052146

SHA256
dc8a0f9420ecd55c40fbdde0d237c5f997f6703fef6e60a66108163d10de97c3

SHA512
bcbcecf70a19440a2a912a82999466c3ae0d7ed606b103c04b3e2cd7ade0c39ec03b3e3f4e699dfca8abc1339b19b991a0083a8690e0b8c45cc759474f88b681

Download Submit
memory/1696-57-0x0000000000000000-mapping.dmp

Download
memory/1760-59-0x0000000000000000-mapping.dmp

Download
memory/1988-56-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download