104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75

Analysis

max time kernel
133s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2022 16:02

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General

Target

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe
Size

36KB
MD5

177fda2ae82ae84dd122ce4b81040960
SHA1

163246fe46f98a747ed37ad3394d5e5f35c906ff
SHA256

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75
SHA512

f657d40f7dced48fe5300fea3e334caca87106f94990336d5bdeed1a4eeca3cb180b1b75f1d95c7430b7ff3af2cf090140c9265938efc3c96b4626ad17553eb2
SSDEEP

768:/KtoFHcuipk3Sw1p0DNaPKB02Isxpjdn9Dp:/quZFSwAaPKB0In9Dp

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

4660 takeown.exe
404 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

4660 takeown.exe
404 icacls.exe

pid	process
4660	takeown.exe
404	icacls.exe

pid	process
4660	takeown.exe
404	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NaCJ = "C:\\Windows\\system32\\vkie.exe"	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

Drops file in System32 directory 2 IoCs

Processes:

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

description	ioc	process
File created	C:\Windows\SysWOW64\vkie.exe	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe
File opened for modification	C:\Windows\SysWOW64\vkie.exe	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

pid process

3532 104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

pid	process
3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe

description	pid	process	target process
PID 3532 wrote to memory of 4660	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	takeown.exe
PID 3532 wrote to memory of 4660	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	takeown.exe
PID 3532 wrote to memory of 4660	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	takeown.exe
PID 3532 wrote to memory of 404	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	icacls.exe
PID 3532 wrote to memory of 404	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	icacls.exe
PID 3532 wrote to memory of 404	3532	104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe
"C:\Users\Admin\AppData\Local\Temp\104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3532

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\vkie.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:4660

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\vkie.exe" /grant Users:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:404

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\vkie.exe
Filesize
36KB

MD5
177fda2ae82ae84dd122ce4b81040960

SHA1
163246fe46f98a747ed37ad3394d5e5f35c906ff

SHA256
104b880b8b19cd80a44b4d6689fe7b5c1732e1648555651b20ef694aafeb2c75

SHA512
f657d40f7dced48fe5300fea3e334caca87106f94990336d5bdeed1a4eeca3cb180b1b75f1d95c7430b7ff3af2cf090140c9265938efc3c96b4626ad17553eb2

Download Submit
memory/404-138-0x0000000000000000-mapping.dmp

Download
memory/4660-137-0x0000000000000000-mapping.dmp

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