f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18

Analysis

max time kernel
42s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02-10-2022 10:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe
Size

40KB
MD5

6fb7128ff497f4072f4478d684cbcab1
SHA1

dfecc74718f3636d382fabdadf6f85ec000bc715
SHA256

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18
SHA512

b0df7afa8641b6a9bdcb24fbcc81b01f8b826d2fb72eca5b4e86a96cc50f2d172323a3ffb2c3c82dcda57c9bc96271ed1e93ed1b736e33a756ce76784cf391f9
SSDEEP

768:/GklvetkSuW2UY2F+lUQXarWYw2ssUZZXVy0alOIH:/GiqkSGOF+lUTWYsy0aOIH

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1788 takeown.exe
1708 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1788 takeown.exe
1708 icacls.exe

pid	process
1788	takeown.exe
1708	icacls.exe

pid	process
1788	takeown.exe
1708	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Ujzkg = "C:\\Windows\\system32\\klls.exe"	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

Drops file in System32 directory 2 IoCs

Processes:

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

description	ioc	process
File created	C:\Windows\SysWOW64\klls.exe	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe
File opened for modification	C:\Windows\SysWOW64\klls.exe	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

pid process

288 f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

pid	process
288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe

description	pid	process	target process
PID 288 wrote to memory of 1788	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	takeown.exe
PID 288 wrote to memory of 1788	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	takeown.exe
PID 288 wrote to memory of 1788	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	takeown.exe
PID 288 wrote to memory of 1788	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	takeown.exe
PID 288 wrote to memory of 1708	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	icacls.exe
PID 288 wrote to memory of 1708	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	icacls.exe
PID 288 wrote to memory of 1708	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	icacls.exe
PID 288 wrote to memory of 1708	288	f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe
"C:\Users\Admin\AppData\Local\Temp\f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:288
- C:\Windows\SysWOW64\takeown.exe
  C:\Windows\system32\takeown.exe /f "C:\Windows\system32\klls.exe"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1788
- C:\Windows\SysWOW64\icacls.exe
  C:\Windows\system32\icacls.exe "C:\Windows\system32\klls.exe" /grant Users:F
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1708

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\klls.exe

Filesize
40KB

MD5
6fb7128ff497f4072f4478d684cbcab1

SHA1
dfecc74718f3636d382fabdadf6f85ec000bc715

SHA256
f04bda4839e0e23480ff96288086cfba799b958d5478161299fdfaebab902f18

SHA512
b0df7afa8641b6a9bdcb24fbcc81b01f8b826d2fb72eca5b4e86a96cc50f2d172323a3ffb2c3c82dcda57c9bc96271ed1e93ed1b736e33a756ce76784cf391f9

Download Submit
memory/1708-57-0x0000000000000000-mapping.dmp

Download
memory/1788-56-0x0000000000000000-mapping.dmp

Download