a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69

Analysis

max time kernel
305s
max time network
348s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 05:41

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General

Target

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Size

5.5MB
MD5

3389b0ae28574ebdb3ee468054ab8bdd
SHA1

38f4733c794762ab13d0f1f1d55314ce95db27c6
SHA256

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69
SHA512

e317e8a81ac5a0cba42787c542d24daeef485970ff1389b4f2c8e70dd3d13aa1fd4957ecfe7916f084807f753c24bb1d7aef3cce600d9d96fb645dcc54be161e
SSDEEP

98304:wJTPo1qdbRaMAPp2+32ooNgji1mpAHzpqGejFWvxjKte2CUn:mw/kS2ooVmg+

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "WinApp32.exe"	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1"	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

Disables Task Manager via registry modification
evasion

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "WinApp.exe"	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

Drops file in Windows directory 4 IoCs

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	ioc	process
File created	C:\Windows\WinApp.exe	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
File opened for modification	C:\Windows\WinApp.exe	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
File created	C:\Windows\WinApp32.exe	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
File opened for modification	C:\Windows\WinApp32.exe	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

TASKKILL.exe

pid process

4828 TASKKILL.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

TASKKILL.exe

description pid process

Token: SeDebugPrivilege 4828 TASKKILL.exe

pid	process
4828	TASKKILL.exe

description	pid	process
Token: SeDebugPrivilege	4828	TASKKILL.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

pid	process
4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	pid	process	target process
PID 4292 wrote to memory of 4828	4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe	TASKKILL.exe
PID 4292 wrote to memory of 4828	4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe	TASKKILL.exe
PID 4292 wrote to memory of 4828	4292	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe	TASKKILL.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoViewOnDrive = "12"	a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe

C:\Users\Admin\AppData\Local\Temp\a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
"C:\Users\Admin\AppData\Local\Temp\a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe"
1⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4292

C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM explorer.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4828-132-0x0000000000000000-mapping.dmp

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