dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8

General

Target
dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
Size 16.3MB
Sample220309-e4vkjaddh4
SHA256 dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8
MD5 e43ee6c5054feb07a7ff7d218e50b5f4
SHA1 349856aaa3a026768369e0d0a113ffa2287c2852
SHA512 8f43cb072fe37eb859d9f4b019dd45d441b3f9421a8d931c1d6e4d76c1f81eda56bfc8d70996b3dab4e5d54e6cb978943e9f5643b0ffe90e4a98ed9798d5de46
MD5 SHA1 SHA512

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 2 IoCs

pid	Process
4700	Host.exe
3792	HostSys.exe

Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe

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\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Host = "C:\\Windows\\host\\Host.exe /start"	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe

Drops file in Windows directory 17 IoCs

description	ioc	Process
File created	C:\Windows\host\regid.reg	Host.exe
File created	C:\Windows\host\HostSys.exe.decript	Host.exe
File created	C:\Windows\host\vp8decoder.dll.decript	Host.exe
File created	C:\Windows\host\vp8encoder.dll.decript	Host.exe
File opened for modification	C:\Windows\host\Host.exe	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
File created	C:\Windows\host\HostServer.exe.decript	Host.exe
File created	C:\Windows\host\HostSys.exe	Host.exe
File created	C:\Windows\host\regemail.reg	Host.exe
File opened for modification	C:\Windows\host\RCXAAA5.tmp	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
File opened for modification	C:\Windows\host	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
File created	C:\Windows\host\Host.exe	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
File created	C:\Windows\host\Host.ico	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
File created	C:\Windows\host\HostServer.exe	Host.exe
File created	C:\Windows\host\vp8decoder.dll	Host.exe
File created	C:\Windows\host\vp8encoder.dll	Host.exe
File created	C:\Windows\host\regset.reg	Host.exe
File created	C:\Windows\Msvcr71.dll	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe

Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe
4700	Host.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 4700	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	83
PID 1596 wrote to memory of 4700	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	83
PID 1596 wrote to memory of 4700	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	83
PID 1596 wrote to memory of 4552	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	84
PID 1596 wrote to memory of 4552	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	84
PID 1596 wrote to memory of 4552	1596	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe	84
PID 4700 wrote to memory of 1980	4700	Host.exe	86
PID 4700 wrote to memory of 1980	4700	Host.exe	86
PID 4700 wrote to memory of 1980	4700	Host.exe	86
PID 4552 wrote to memory of 1456	4552	WScript.exe	88
PID 4552 wrote to memory of 1456	4552	WScript.exe	88
PID 4552 wrote to memory of 1456	4552	WScript.exe	88
PID 1456 wrote to memory of 1040	1456	cmd.exe	90
PID 1456 wrote to memory of 1040	1456	cmd.exe	90
PID 1456 wrote to memory of 1040	1456	cmd.exe	90
PID 4700 wrote to memory of 3792	4700	Host.exe	100
PID 4700 wrote to memory of 3792	4700	Host.exe	100
PID 4700 wrote to memory of 3792	4700	Host.exe	100

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System	Host.exe

C:\Users\Admin\AppData\Local\Temp\dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe
"C:\Users\Admin\AppData\Local\Temp\dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1596
- C:\Windows\host\Host.exe
  "C:\Windows\host\Host.exe" /install
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:4700
- - C:\Windows\SysWOW64\sc.exe
    sc delete HostServer
    3⤵
    PID:1980
- - C:\Windows\host\HostSys.exe
    C:\Windows\host\HostSys.exe /silentinstall
    3⤵
    - Executes dropped EXE
    PID:3792
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.vbs"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4552
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\dac68e2f9df041aacd69b3f29a37c5d2de0c38638772b9ab973d0f242febc4c8.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1456
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:1040