5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65

General

Target

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe
Size

642KB
MD5

3ba57c30e9d76e7a0e16343d6ca9e4d1
SHA1

97fe51a2fd27183b20dfaeba8db5f2738a1eda27
SHA256

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65
SHA512

5d356c8399364604c71d6f7b49f34af35bec09802a4f10953ffaaa32db85dd4f0caaed5c96418dc1fec9d4dfc45f96fbec327e22b9e77c4b2d287cc4e5922508

Score

8^/10

bootkit evasion persistence

Malware Config

Signatures

Disables Task Manager via registry modification
evasion
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

description ioc process

File opened for modification \??\PhysicalDrive0 5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.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 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1080 1120 WerFault.exe 5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

pid	pid_target	process	target process
1080	1120	WerFault.exe	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

description	pid	process	target process
PID 1120 wrote to memory of 1088	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 1120 wrote to memory of 1088	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 1120 wrote to memory of 1088	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 1120 wrote to memory of 1088	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 1120 wrote to memory of 1080	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	WerFault.exe
PID 1120 wrote to memory of 1080	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	WerFault.exe
PID 1120 wrote to memory of 1080	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	WerFault.exe
PID 1120 wrote to memory of 1080	1120	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe
"C:\Users\Admin\AppData\Local\Temp\5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\_uninsep.bat" "
2⤵
PID:1088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 460
2⤵
- Program crash
PID:1080

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_uninsep.bat
Filesize
341B

MD5
a9f1a6eea2ede280c0c81cd8286c96e3

SHA1
f5bce10a372046e5e99c31ac668f5f4b2ea4c05f

SHA256
2633fa54c2ba4e2752ca5700ac3cf094448dd6266dc069d42ff1bfc4e898639e

SHA512
c815992ac33a4f1a1a3e3cee7b47aae8b935393d0130f0e40ebf49a7b7ff469303d49feacdf59519005e0877f7295b26c3efacdfba6e0d2d858bdbb30c1a27dd

Download Submit
memory/1080-56-0x0000000000000000-mapping.dmp

Download
memory/1088-55-0x0000000000000000-mapping.dmp

Download
memory/1120-54-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download

Analysis

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