4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189

Analysis

max time kernel
41s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21-10-2022 01:21

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General

Target

4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe
Size

68KB
MD5

4172d99dbdda31568d0b49cf9d92d7e0
SHA1

ee792bd1a9cd220a1b9029b0fe1b88fd8aad5fee
SHA256

4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189
SHA512

c769a85f57146cd42608ff3dc2a07360dc0bcfb87a5eb20d7687786b474e9f8400bb0b9a8713233d9a78a36761508500ead1959a3d27471deaa24de1132732fe
SSDEEP

768:lGUus3huFSgaLva+Nwuk7X0vIurM69GMaq+Z3rzG6pnilLAnWKLkSXG4Xo:lGUVxjkwmwaq+Z/n6SGio

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1756 takeown.exe
1472 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1756 takeown.exe
1472 icacls.exe

pid	process
1756	takeown.exe
1472	icacls.exe

pid	process
1756	takeown.exe
1472	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

description	ioc	process
File created	C:\Windows\SysWOW64\cflzw.exe	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe
File opened for modification	C:\Windows\SysWOW64\cflzw.exe	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

pid process

1732 4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

pid	process
1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe

description	pid	process	target process
PID 1732 wrote to memory of 1756	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	takeown.exe
PID 1732 wrote to memory of 1756	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	takeown.exe
PID 1732 wrote to memory of 1756	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	takeown.exe
PID 1732 wrote to memory of 1756	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	takeown.exe
PID 1732 wrote to memory of 1472	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	icacls.exe
PID 1732 wrote to memory of 1472	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	icacls.exe
PID 1732 wrote to memory of 1472	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	icacls.exe
PID 1732 wrote to memory of 1472	1732	4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe
"C:\Users\Admin\AppData\Local\Temp\4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\cflzw.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1756

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\cflzw.exe" /grant SYSTEM:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1472

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\cflzw.exe
Filesize
68KB

MD5
4172d99dbdda31568d0b49cf9d92d7e0

SHA1
ee792bd1a9cd220a1b9029b0fe1b88fd8aad5fee

SHA256
4b7fa0d6299d7dbf332f726a071e6a18057c52a44ffba1147845b2a42d178189

SHA512
c769a85f57146cd42608ff3dc2a07360dc0bcfb87a5eb20d7687786b474e9f8400bb0b9a8713233d9a78a36761508500ead1959a3d27471deaa24de1132732fe

Download Submit
memory/1472-59-0x0000000000000000-mapping.dmp

Download
memory/1732-56-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1756-57-0x0000000000000000-mapping.dmp

Download