c116a84de226809e5773309160abef8260449684d64ccfa2c8eeea3929efbfc3

General

Target

catalog-212966646.xls
Size

367KB
MD5

cf7a377de62e1fe6166c897bc1a9dfe7
SHA1

741c6e369dd0a97007fe27dc1a466f4227a1191d
SHA256

1c622a0211ee2cbc493164e39dcaabb4ba885870f280c3b84c272dd900bc1c8a
SHA512

618b47c9325b78ea7efdbbf7e1bb3bff78c39ec7e3ae94255f68bfe966ddec6b2a0c92a2088d6731dbe1c43ec5691ab92699e990791f44e4f337ca890c18614b

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2528	2256	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2664	2256	rundll32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2256 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE
2256	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2256 wrote to memory of 2528	2256	EXCEL.EXE	rundll32.exe
PID 2256 wrote to memory of 2528	2256	EXCEL.EXE	rundll32.exe
PID 2256 wrote to memory of 2664	2256	EXCEL.EXE	rundll32.exe
PID 2256 wrote to memory of 2664	2256	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\catalog-212966646.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2256

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2528

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2664

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2256-114-0x00007FF768EC0000-0x00007FF76C476000-memory.dmp

Filesize
53.7MB

Download
memory/2256-115-0x00007FFF9B3D0000-0x00007FFF9B3E0000-memory.dmp

Filesize
64KB

Download
memory/2256-116-0x00007FFF9B3D0000-0x00007FFF9B3E0000-memory.dmp

Filesize
64KB

Download
memory/2256-117-0x00007FFF9B3D0000-0x00007FFF9B3E0000-memory.dmp

Filesize
64KB

Download
memory/2256-118-0x00007FFF9B3D0000-0x00007FFF9B3E0000-memory.dmp

Filesize
64KB

Download
memory/2256-121-0x00007FFF9B3D0000-0x00007FFF9B3E0000-memory.dmp

Filesize
64KB

Download
memory/2256-122-0x00007FFFBBFC0000-0x00007FFFBD0AE000-memory.dmp

Filesize
16.9MB

Download
memory/2256-123-0x0000020457CA0000-0x0000020459B95000-memory.dmp

Filesize
31.0MB

Download
memory/2528-179-0x0000000000000000-mapping.dmp

Download
memory/2664-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads