3822bf638906a587b1810852af17e49b861b60525b4fd286b21fa6ec1153d944

General

Target

catalog-2139086320.xls
Size

367KB
MD5

9efe20e7dc4f210318048930099888a0
SHA1

b2dedd799f1a94e55ee747982418069727c38b09
SHA256

8ea01326ff4161e3cd3d5a5098ccc9b3b89b9b8a96982508c565dd3c712f3ff0
SHA512

f20dd396303acd49f11be3e94b3bef24407de326765cb88bfc08a99d2e0e426551b95cbaa1f4f490580e16aaf2190394eb9f0f53ca19331b7ee15567deb8a03d

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	2084	784	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2792	784	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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 opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

784 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE
784	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 784 wrote to memory of 2084	784	EXCEL.EXE	rundll32.exe
PID 784 wrote to memory of 2084	784	EXCEL.EXE	rundll32.exe
PID 784 wrote to memory of 2792	784	EXCEL.EXE	rundll32.exe
PID 784 wrote to memory of 2792	784	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-2139086320.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:784

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2084

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2792

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/784-114-0x00007FF708B70000-0x00007FF70C126000-memory.dmp

Filesize
53.7MB

Download
memory/784-115-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/784-116-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/784-117-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/784-118-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/784-119-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/784-122-0x00007FFDF79B0000-0x00007FFDF8A9E000-memory.dmp

Filesize
16.9MB

Download
memory/784-123-0x0000018478860000-0x000001847A755000-memory.dmp

Filesize
31.0MB

Download
memory/2084-179-0x0000000000000000-mapping.dmp

Download
memory/2792-180-0x0000000000000000-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