5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65

Analysis

max time kernel
136s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
20-05-2022 04:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

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

4056 2488 WerFault.exe 5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

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

pid	pid_target	process	target process
4056	2488	WerFault.exe	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe

description	pid	process	target process
PID 2488 wrote to memory of 4124	2488	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 2488 wrote to memory of 4124	2488	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe
PID 2488 wrote to memory of 4124	2488	5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe
"C:\Users\Admin\AppData\Local\Temp\5c61d4279a66920cdbb4aea1b9bc84f34f563eb63de7ce57296784e4304a7e65.exe"
1⤵
- Checks computer location settings
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:2488

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_uninsep.bat" "
2⤵
PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 1240
2⤵
- Program crash
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2488 -ip 2488
1⤵
PID:4140

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
a9f1a6eea2ede280c0c81cd8286c96e3

SHA1
f5bce10a372046e5e99c31ac668f5f4b2ea4c05f

SHA256
2633fa54c2ba4e2752ca5700ac3cf094448dd6266dc069d42ff1bfc4e898639e

SHA512
c815992ac33a4f1a1a3e3cee7b47aae8b935393d0130f0e40ebf49a7b7ff469303d49feacdf59519005e0877f7295b26c3efacdfba6e0d2d858bdbb30c1a27dd

Download Submit
memory/4124-131-0x0000000000000000-mapping.dmp

Download