09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768

Resubmissions

16-09-2021 17:11

210916-vqc2bsgffp 8

29-07-2020 07:17

200729-r3t8er9v4n 8

Analysis

max time kernel
62s
max time network
67s
platform
windows10_x64
resource
win10v200722
submitted
29-07-2020 07:17

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General

Target

09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe
Size

64KB
MD5

aa0d25108c420b68af8a98d877a10e9a
SHA1

b4a9c79567a508254953a024ac284c12ce57873b
SHA256

09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768
SHA512

b00f2e9c3d1a343b257a423a5fdf9aa4be82b11b94657d2bd88c056da80b34903aa103c34eeca5e5cffab81d92e53c4209765f25cadab38cc0df049d2b1e07d2

Score

8^/10

persistence

Malware Config

Signatures

Modifies Installed Components in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

LaunchWinApp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	LaunchWinApp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	LaunchWinApp.exe
Key created	\REGISTRY\USER\S-1-5-21-1400429095-533421673-2598934218-1000\Software\Microsoft\Windows\CurrentVersion\Run	LaunchWinApp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1400429095-533421673-2598934218-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	LaunchWinApp.exe

Drops file in Windows directory 2 IoCs

Processes:

LaunchWinApp.exe

description	ioc	process
File opened for modification	C:\Windows\InstallDir\Server.exe	LaunchWinApp.exe
File created	C:\Windows\InstallDir\Server.exe	LaunchWinApp.exe

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

System Information Discovery
T1082
Program crash 3 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exe

pid pid_target process target process

996 408 WerFault.exe svchost.exe
856 408 WerFault.exe svchost.exe
1128 556 WerFault.exe LaunchWinApp.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LaunchWinApp.exe

pid process

556 LaunchWinApp.exe

pid	pid_target	process	target process
996	408	WerFault.exe	svchost.exe
856	408	WerFault.exe	svchost.exe
1128	556	WerFault.exe	LaunchWinApp.exe

pid	process
556	LaunchWinApp.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe

description	pid	process	target process
PID 3488 wrote to memory of 408	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	svchost.exe
PID 3488 wrote to memory of 408	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	svchost.exe
PID 3488 wrote to memory of 408	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	svchost.exe
PID 3488 wrote to memory of 408	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	svchost.exe
PID 3488 wrote to memory of 556	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	LaunchWinApp.exe
PID 3488 wrote to memory of 556	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	LaunchWinApp.exe
PID 3488 wrote to memory of 556	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	LaunchWinApp.exe
PID 3488 wrote to memory of 556	3488	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	LaunchWinApp.exe

C:\Users\Admin\AppData\Local\Temp\09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe
"C:\Users\Admin\AppData\Local\Temp\09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:408
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 408 -s 532
    3⤵
    - Program crash
    PID:996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 408 -s 524
    3⤵
    - Program crash
    PID:856
- C:\Windows\SysWOW64\LaunchWinApp.exe
  C:\Windows\system32\LaunchWinApp.exe
  2⤵
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 804
    3⤵
    - Program crash
    PID:1128

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/408-0-0x0000000000000000-mapping.dmp

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memory/556-1-0x0000000000000000-mapping.dmp

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