500b733cbc1ac73598983140ae1b27cb21d06b4e55b5f6d325e5c56b87d8a82f

Resubmissions

29-09-2021 14:29

210929-rtl7mafcdk 10

29-09-2021 14:25

210929-rre1jafbc3 10

29-09-2021 14:21

210929-rn53jsfbb8 10

Analysis

max time kernel
293s
max time network
300s
platform
windows11_x64
resource
win11
submitted
29-09-2021 14:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a28f2e84d613b1c2b632352880d530fe.exe
Size

169KB
MD5

a28f2e84d613b1c2b632352880d530fe
SHA1

6c036e2f942b68b7903cc9c00d185306661d9a43
SHA256

500b733cbc1ac73598983140ae1b27cb21d06b4e55b5f6d325e5c56b87d8a82f
SHA512

421f68ea65192dc8a9ba0be64f47b308b8785a641e9d775590b3d764071e13a0b149f7052e785e44d3e44c6396a16fcc725f759adb94b6ffafc117fba0000ae6

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3888 created 1676 3888 WerFault.exe a28f2e84d613b1c2b632352880d530fe.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4820 1676 WerFault.exe a28f2e84d613b1c2b632352880d530fe.exe

description	pid	process	target process
PID 3888 created 1676	3888	WerFault.exe	a28f2e84d613b1c2b632352880d530fe.exe

pid	pid_target	process	target process
4820	1676	WerFault.exe	a28f2e84d613b1c2b632352880d530fe.exe

Checks processor information in registry 2 TTPs 7 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Modifies data under HKEY_USERS 1 IoCs

Processes:

svchost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections svchost.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

4820 WerFault.exe
4820 WerFault.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	svchost.exe

pid	process
4820	WerFault.exe
4820	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

WerFault.exesvchost.exe

description	pid	process
Token: SeRestorePrivilege	4820	WerFault.exe
Token: SeBackupPrivilege	4820	WerFault.exe
Token: SeSystemtimePrivilege	2388	svchost.exe
Token: SeSystemtimePrivilege	2388	svchost.exe
Token: SeIncBasePriorityPrivilege	2388	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3888 wrote to memory of 1676	3888	WerFault.exe	a28f2e84d613b1c2b632352880d530fe.exe
PID 3888 wrote to memory of 1676	3888	WerFault.exe	a28f2e84d613b1c2b632352880d530fe.exe

C:\Users\Admin\AppData\Local\Temp\a28f2e84d613b1c2b632352880d530fe.exe
"C:\Users\Admin\AppData\Local\Temp\a28f2e84d613b1c2b632352880d530fe.exe"
1⤵
PID:1676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1676 -s 296
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 1676 -ip 1676
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3888

C:\Windows\System32\sihclient.exe
C:\Windows\System32\sihclient.exe /cv bIwyp2o330q1fggh9KFnew.0.2
1⤵
PID:5100

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS
1⤵
- Modifies data under HKEY_USERS
PID:4608

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV
1⤵
PID:4716

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s W32Time
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2388

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

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

\??\PIPE\lsarpc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1676-146-0x00000000022C0000-0x00000000022DD000-memory.dmp

Filesize
116KB

Download
memory/4608-147-0x000002289AF80000-0x000002289AF90000-memory.dmp

Filesize
64KB

Download
memory/4608-148-0x000002289B000000-0x000002289B010000-memory.dmp

Filesize
64KB

Download