b8fda370e83bf776a2f4c4a23f5d701186e21984f771e878f04fe0136faf1fbf

Analysis

max time kernel
4264967s
max time network
19s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
17/01/2022, 04:23

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General

Target

SearchIndexer.exe
Size

91KB
MD5

1cc07a0274718e845c9b77f8334c4cb3
SHA1

12b6c08371fd4661ed2da442e7ec34f226d7ac01
SHA256

b8fda370e83bf776a2f4c4a23f5d701186e21984f771e878f04fe0136faf1fbf
SHA512

0bb60c3a608a6227cfe66f264b2fcdc932e9c9f8f72ff8f8569f23400b6563b8cd834deae1fe4f3866dbef003bbc25372481d6ca8edfcd2467c16a35aa4dfb9d

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3200	MusNotification.exe
Token: SeCreatePagefilePrivilege	3200	MusNotification.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	SearchIndexer.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 3780	2860	SearchIndexer.exe	61
PID 2860 wrote to memory of 3780	2860	SearchIndexer.exe	61
PID 2860 wrote to memory of 3780	2860	SearchIndexer.exe	61

C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe
"C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe' -Destination 'C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe';Start-Sleep -s 60;Start-Process 'C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe'
  2⤵
  PID:3780

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:3200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2860-130-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2860-131-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/3780-134-0x0000000000A90000-0x0000000000A91000-memory.dmp

Filesize
4KB

Download
memory/3780-133-0x0000000000A90000-0x0000000000A91000-memory.dmp

Filesize
4KB

Download