f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7

Analysis

max time kernel
79s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2022 17:34

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General

Target

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe
Size

40KB
MD5

65b0b3f915028e7d9b647cdd6813b2f0
SHA1

cec104bc0c7e4fea16f8b24b7eadfcd78b3cb325
SHA256

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7
SHA512

9dc991b8cc321727e4fe4652980fe3d2516c7b8f73d44f092220176bdb3b50d2e48b83174cac7e557cbea9ac1fb8c91d3f0a86fedf12f55e3d7e938fa46939f0
SSDEEP

384:/TbxFtWCOLxBEk0I+satqAlgCq3O1Gxi8KDYf+m+LxrQN+lDqKnV8QYeaqEG54Ma:/RFtWCO9BEkxtatPTQDQdYWTh9qwoP

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

4164 takeown.exe
5032 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

4164 takeown.exe
5032 icacls.exe

pid	process
4164	takeown.exe
5032	icacls.exe

pid	process
4164	takeown.exe
5032	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bcrN = "C:\\Windows\\system32\\irqvq.exe"	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

Drops file in System32 directory 2 IoCs

Processes:

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\irqvq.exe	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe
File created	C:\Windows\SysWOW64\irqvq.exe	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

pid process

3992 f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

pid	process
3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe

description	pid	process	target process
PID 3992 wrote to memory of 4164	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	takeown.exe
PID 3992 wrote to memory of 4164	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	takeown.exe
PID 3992 wrote to memory of 4164	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	takeown.exe
PID 3992 wrote to memory of 5032	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	icacls.exe
PID 3992 wrote to memory of 5032	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	icacls.exe
PID 3992 wrote to memory of 5032	3992	f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe
"C:\Users\Admin\AppData\Local\Temp\f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3992

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "C:\Windows\system32\irqvq.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:4164

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "C:\Windows\system32\irqvq.exe" /grant Users:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:5032

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\irqvq.exe
Filesize
40KB

MD5
65b0b3f915028e7d9b647cdd6813b2f0

SHA1
cec104bc0c7e4fea16f8b24b7eadfcd78b3cb325

SHA256
f5fc740a94bedbcb69d9429214a6045fe18ea3f56ce1ea6329cbbc9551b260c7

SHA512
9dc991b8cc321727e4fe4652980fe3d2516c7b8f73d44f092220176bdb3b50d2e48b83174cac7e557cbea9ac1fb8c91d3f0a86fedf12f55e3d7e938fa46939f0

Download Submit
memory/4164-134-0x0000000000000000-mapping.dmp

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memory/5032-135-0x0000000000000000-mapping.dmp

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