fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1

General

Target

fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
Size

384KB
MD5

6ed9ee3a8e511ffbe7bf2e3f8c8c8d36
SHA1

cb511a0c49d5858e96793b78324d7d804d2d4fee
SHA256

fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1
SHA512

93ffcddee4c8687b06c02768e1efcf13b7f0fd9522c73c65627ab8c88216160872e23de577d58de6b8df0cec234b6b61c2ffebd84ef562d596ce487ebded94f5
SSDEEP

6144:Z5QioRT/ryfr1tR8PFgHu3WIvi0hGz0plscPC2fTOShhne:ZmioxO8cuGIJGg3jCGTO5

Score

8^/10

discovery evasion persistence trojan

Malware Config

Signatures

Adds policy 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\Policies\Explorer\Run	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\SDJOCTV = "C:\\Windows\\SysWOW64\\QUTILK.exe"	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	QUTILK.exe

Executes dropped EXE 1 IoCs

pid	Process
628	QUTILK.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Deletes itself 1 IoCs

pid	Process
1060	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\QUTILK.exe	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
File opened for modification	C:\Windows\SysWOW64\QUTILK.exe	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
832	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
628	QUTILK.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 628	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	29
PID 2016 wrote to memory of 628	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	29
PID 2016 wrote to memory of 628	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	29
PID 2016 wrote to memory of 628	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	29
PID 2016 wrote to memory of 1060	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	31
PID 2016 wrote to memory of 1060	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	31
PID 2016 wrote to memory of 1060	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	31
PID 2016 wrote to memory of 1060	2016	fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe	31
PID 628 wrote to memory of 832	628	QUTILK.exe	33
PID 628 wrote to memory of 832	628	QUTILK.exe	33
PID 628 wrote to memory of 832	628	QUTILK.exe	33
PID 628 wrote to memory of 832	628	QUTILK.exe	33

C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe
"C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\SysWOW64\QUTILK.exe
  C:\Windows\SysWOW64\QUTILK.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:628
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:832
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins4832.bat "C:\Users\Admin\AppData\Local\Temp\fc2eb43d0502e2f74f64951521dcac299bd8c9cb9807d1ba7a1883a807e43bc1.exe"
  2⤵
  - Deletes itself
  PID:1060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins4832.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Windows\SysWOW64\QUTILK.exe

Filesize
147KB

MD5
f14e81cd2f1bc0cdaa5a0d11b70ea770

SHA1
b38bbacb6f68374652d08a1f7a325dd5b6f664d2

SHA256
160961923b931bfdb2b2be4d7d0c05ad64498417806bc5420c6c048718c03848

SHA512
4c17347b007a9207967404510740a85aee0a429cbb455998d6e03a3ed6cd7c403861c1db5cb946671de887da32435175253d28121c6d481391273974315bcc44

Download Submit
\Windows\SysWOW64\QUTILK.exe

Filesize
147KB

MD5
f14e81cd2f1bc0cdaa5a0d11b70ea770

SHA1
b38bbacb6f68374652d08a1f7a325dd5b6f664d2

SHA256
160961923b931bfdb2b2be4d7d0c05ad64498417806bc5420c6c048718c03848

SHA512
4c17347b007a9207967404510740a85aee0a429cbb455998d6e03a3ed6cd7c403861c1db5cb946671de887da32435175253d28121c6d481391273974315bcc44

Download Submit
\Windows\SysWOW64\QUTILK.exe

Filesize
147KB

MD5
f14e81cd2f1bc0cdaa5a0d11b70ea770

SHA1
b38bbacb6f68374652d08a1f7a325dd5b6f664d2

SHA256
160961923b931bfdb2b2be4d7d0c05ad64498417806bc5420c6c048718c03848

SHA512
4c17347b007a9207967404510740a85aee0a429cbb455998d6e03a3ed6cd7c403861c1db5cb946671de887da32435175253d28121c6d481391273974315bcc44

Download Submit
memory/628-65-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/2016-54-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/2016-55-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/2016-56-0x0000000001C20000-0x0000000001CBA000-memory.dmp

Filesize
616KB

Download
memory/2016-60-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads