ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6

General

Target

ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
Size

617KB
MD5

62a9627d19fd3eaba65392ab7044e380
SHA1

11f6f0773c4c40d227143973c1e3fd9bfe21d66e
SHA256

ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6
SHA512

f09c24a8a7a6895f81df86aa59525ea414ed395e962d3c94cd4acf5e18368187462787e81c5d4e8e05909fb40d1bc0ffc5dae68dd5778f34a894d41c865dee87
SSDEEP

6144:YVY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bco2KWF:YgDhdkq5BCoC5LfWSLTUQpr2Zu19Q3

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe scvhosti.exe"	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

Disables Task Manager via registry modification
evasion

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1692-61-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral1/memory/1692-62-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral1/memory/1692-63-0x0000000000400000-0x0000000000496000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Yahoo Messengger = "C:\\Windows\\system32\\scvhosti.exe"	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1692-61-0x0000000000400000-0x0000000000496000-memory.dmp	autoit_exe
behavioral1/memory/1692-62-0x0000000000400000-0x0000000000496000-memory.dmp	autoit_exe
behavioral1/memory/1692-63-0x0000000000400000-0x0000000000496000-memory.dmp	autoit_exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\scvhosti.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File created	C:\Windows\SysWOW64\anhui.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File opened for modification	C:\Windows\SysWOW64\anhui.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File opened for modification	C:\Windows\SysWOW64\autorun.ini	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File created	C:\Windows\SysWOW64\setting.ini	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File opened for modification	C:\Windows\SysWOW64\setting.ini	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File created	C:\Windows\SysWOW64\scvhosti.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\scvhosti.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
File created	C:\Windows\scvhosti.exe	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 900	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	28
PID 1692 wrote to memory of 900	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	28
PID 1692 wrote to memory of 900	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	28
PID 1692 wrote to memory of 900	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	28
PID 900 wrote to memory of 2012	900	cmd.exe	30
PID 900 wrote to memory of 2012	900	cmd.exe	30
PID 900 wrote to memory of 2012	900	cmd.exe	30
PID 900 wrote to memory of 2012	900	cmd.exe	30
PID 1692 wrote to memory of 1712	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	31
PID 1692 wrote to memory of 1712	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	31
PID 1692 wrote to memory of 1712	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	31
PID 1692 wrote to memory of 1712	1692	ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe	31
PID 1712 wrote to memory of 1988	1712	cmd.exe	33
PID 1712 wrote to memory of 1988	1712	cmd.exe	33
PID 1712 wrote to memory of 1988	1712	cmd.exe	33
PID 1712 wrote to memory of 1988	1712	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe
"C:\Users\Admin\AppData\Local\Temp\ec1af6d0d68792057d6f13a9979ab7dc7811c66804688eeda83397413cf7c2c6.exe"
1⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /C AT /delete /yes
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:900
- - C:\Windows\SysWOW64\at.exe
    AT /delete /yes
    3⤵
    PID:2012
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\anhui.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\at.exe
    AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\anhui.exe
    3⤵
    PID:1988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1692-54-0x0000000075921000-0x0000000075923000-memory.dmp

Filesize
8KB

Download
memory/1692-61-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/1692-62-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/1692-63-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads