94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052

Analysis

max time kernel
90s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2022 09:23

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General

Target

94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Size

1001KB
MD5

e448b363a4d92dd44cf9e01511de2ac8
SHA1

c2ec35df7690ce9232b5460ac072d6ccfa782417
SHA256

94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052
SHA512

55b183a002608280cce077c5f2d037f18b39f099c3f2685ab04840ec272a6a6f74c7041b74d54f200c70773df3dca90cf27e0464cacd5f1187ce5284706046a6
SSDEEP

12288:fqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSoqSe:G

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\eta\hosts	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.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

pid	Process
4900	taskkill.exe

Modifies registry class 11 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.IE\ = "IE"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\ = "????"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\NeverShowExt = "1"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\shell\open\command	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\shell\open\command\ = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE $"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\DefaultIcon\ = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE,0"	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.IE	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IE	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\shell	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\shell\open	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IE\DefaultIcon	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Token: SeDebugPrivilege	4900	taskkill.exe
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
Token: SeDebugPrivilege	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 4900	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe	80
PID 2312 wrote to memory of 4900	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe	80
PID 2312 wrote to memory of 4900	2312	94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe	80

C:\Users\Admin\AppData\Local\Temp\94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe
"C:\Users\Admin\AppData\Local\Temp\94b8ea5fe15903bb1016fb20089796602c2f68e55da6322f746032887af1b052.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Drops file in Drivers directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im ZhuDongFangyu.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2312-132-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2312-136-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4900-135-0x0000000000000000-mapping.dmp

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