aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1

Analysis

max time kernel
46s
max time network
50s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
19-11-2022 15:34

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General

Target

aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe
Size

56KB
MD5

5591211a3b6591dcfdda3254820eb446
SHA1

25f0b212b9e083f900fbc14f8fc900295a4b9b4c
SHA256

aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1
SHA512

c26bcdcd35e8676b9a2e520c783596c7bb24f68f81b166ad5e0ac9de7f222fd7e5a5a46c6e915e5a491622c58ddd668593303df93e5d710ebfc72cf269777e45
SSDEEP

768:V2Yi/RoaeqRHphT0uoUVdPEV2Ux9l8pwrdgbElTZ2ZeT:c5/RpwUVdMYkl8YdjMeT

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1280 takeown.exe
1168 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1280 takeown.exe
1168 icacls.exe

pid	process
1280	takeown.exe
1168	icacls.exe

pid	process
1280	takeown.exe
1168	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\kuyf.exe	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe
File opened for modification	\??\c:\windows\SysWOW64\kuyf.exe	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

pid process

1244 aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

pid	process
1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe

description	pid	process	target process
PID 1244 wrote to memory of 1280	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	takeown.exe
PID 1244 wrote to memory of 1280	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	takeown.exe
PID 1244 wrote to memory of 1280	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	takeown.exe
PID 1244 wrote to memory of 1280	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	takeown.exe
PID 1244 wrote to memory of 1168	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	icacls.exe
PID 1244 wrote to memory of 1168	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	icacls.exe
PID 1244 wrote to memory of 1168	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	icacls.exe
PID 1244 wrote to memory of 1168	1244	aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe
"C:\Users\Admin\AppData\Local\Temp\aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1244

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "c:\windows\system32\kuyf.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1280

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "c:\windows\system32\kuyf.exe" /grant SYSTEM:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1168

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\SysWOW64\kuyf.exe
Filesize
56KB

MD5
5591211a3b6591dcfdda3254820eb446

SHA1
25f0b212b9e083f900fbc14f8fc900295a4b9b4c

SHA256
aa872676e5a6cd015e39fa9f0eae4864b2fc15cd8cd01ccfce6ac0ad8808d0f1

SHA512
c26bcdcd35e8676b9a2e520c783596c7bb24f68f81b166ad5e0ac9de7f222fd7e5a5a46c6e915e5a491622c58ddd668593303df93e5d710ebfc72cf269777e45

Download Submit
memory/1168-57-0x0000000000000000-mapping.dmp

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memory/1280-56-0x0000000000000000-mapping.dmp

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