b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f

Analysis

max time kernel
25s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
08-11-2022 11:21

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General

Target

b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe
Size

76KB
MD5

00a0ee955f28a00d3e0153adad8ccbd6
SHA1

aacc4109349377d1a0ef68512dfd3d812a514fdd
SHA256

b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f
SHA512

12c996808750974b611a768b018b52bbd11eb67d1389d3e3232858c7ef70a78da2fee303963240f5045fedb9c85b0347748c362ccfa8752100cfa38351260ce9
SSDEEP

768:YIE5SMy0AvkBrsVbJYv79+Hi6XzY1nZCdRFoEGUzrbHYiI3/1jW8xfZdjo0XY+Xt:YwLJYp+dOCdRWEGsrq3N1j5XY+q5o

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

940 takeown.exe
1728 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

940 takeown.exe
1728 icacls.exe

pid	process
940	takeown.exe
1728	icacls.exe

pid	process
940	takeown.exe
1728	icacls.exe

Drops file in System32 directory 2 IoCs

Processes:

b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

description	ioc	process
File created	C:\Windows\SysWOW64\ukwx.exe	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe
File opened for modification	C:\Windows\SysWOW64\ukwx.exe	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

pid process

1884 b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

pid	process
1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe

description	pid	process	target process
PID 1884 wrote to memory of 940	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	takeown.exe
PID 1884 wrote to memory of 940	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	takeown.exe
PID 1884 wrote to memory of 940	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	takeown.exe
PID 1884 wrote to memory of 940	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	takeown.exe
PID 1884 wrote to memory of 1728	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	icacls.exe
PID 1884 wrote to memory of 1728	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	icacls.exe
PID 1884 wrote to memory of 1728	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	icacls.exe
PID 1884 wrote to memory of 1728	1884	b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe
"C:\Users\Admin\AppData\Local\Temp\b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1884

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\ukwx.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:940

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\ukwx.exe" /grant SYSTEM:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1728

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ukwx.exe
Filesize
76KB

MD5
00a0ee955f28a00d3e0153adad8ccbd6

SHA1
aacc4109349377d1a0ef68512dfd3d812a514fdd

SHA256
b31bfb5cddc0139d4d1a070897e9925ae228f27936b5af2737720dbad336578f

SHA512
12c996808750974b611a768b018b52bbd11eb67d1389d3e3232858c7ef70a78da2fee303963240f5045fedb9c85b0347748c362ccfa8752100cfa38351260ce9

Download Submit
memory/940-57-0x0000000000000000-mapping.dmp

Download
memory/1728-59-0x0000000000000000-mapping.dmp

Download
memory/1884-56-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

Filesize
8KB

Download