09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768

Resubmissions

16-09-2021 17:11

210916-vqc2bsgffp 8

29-07-2020 07:17

200729-r3t8er9v4n 8

Analysis

max time kernel
135s
max time network
137s
platform
windows10_x64
resource
win10-en
submitted
16-09-2021 17:11

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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

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-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run	LaunchWinApp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	LaunchWinApp.exe

Drops file in Windows directory 2 IoCs

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 4 IoCs

pid	pid_target	Process	procid_target
4856	4760	WerFault.exe	69
4876	4760	WerFault.exe	69
4904	4776	WerFault.exe	70
4920	4776	WerFault.exe	70

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4776	LaunchWinApp.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 4760	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	69
PID 4736 wrote to memory of 4760	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	69
PID 4736 wrote to memory of 4760	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	69
PID 4736 wrote to memory of 4760	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	69
PID 4736 wrote to memory of 4776	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	70
PID 4736 wrote to memory of 4776	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	70
PID 4736 wrote to memory of 4776	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	70
PID 4736 wrote to memory of 4776	4736	09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe	70

C:\Users\Admin\AppData\Local\Temp\09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe
"C:\Users\Admin\AppData\Local\Temp\09a4b8050e81c0d265bb05d6ef4b7155d0ffda7ebe00820aa5a1fd08c3f4a768.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:4760
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 532
    3⤵
    - Program crash
    PID:4856
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 524
    3⤵
    - Program crash
    PID:4876
- 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:4776
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 848
    3⤵
    - Program crash
    PID:4904
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 804
    3⤵
    - Program crash
    PID:4920

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/4760-117-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4776-118-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download