d9145d25e17ecfa0685ddf34aba79603d71817ae676d39cf6d6433b8b91f105f

General

Target

catalog-209882050.xls
Size

367KB
MD5

8666f7805cbc41e8c820494253e5f9aa
SHA1

6e1b4266f2e25b4b00cda7d3da6f0c9f09531160
SHA256

73f37edf1c244df0778a5e80aa4889f0afbd53179504441e9ab4573c1f562b53
SHA512

aad9a9dcb0ead8f7cb88aa7a10992d18c6cc82eec126a770dc18cbf8330e41603a8f1b9e04307f7e0df0eec73d6ec71905a072f84091efbfd43ba2ac2233df94

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	2252	604	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3132	604	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 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

604 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

604 EXCEL.EXE
604 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE
604	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 604 wrote to memory of 2252	604	EXCEL.EXE	rundll32.exe
PID 604 wrote to memory of 2252	604	EXCEL.EXE	rundll32.exe
PID 604 wrote to memory of 3132	604	EXCEL.EXE	rundll32.exe
PID 604 wrote to memory of 3132	604	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-209882050.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:604

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2252

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3132

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/604-114-0x00007FF7F9370000-0x00007FF7FC926000-memory.dmp

Filesize
53.7MB

Download
memory/604-115-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/604-116-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/604-118-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/604-117-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/604-121-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/604-122-0x00007FF82C270000-0x00007FF82D35E000-memory.dmp

Filesize
16.9MB

Download
memory/604-123-0x00007FF82A370000-0x00007FF82C265000-memory.dmp

Filesize
31.0MB

Download
memory/2252-179-0x0000000000000000-mapping.dmp

Download
memory/3132-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads