61e798e2539635b290c475b23bbe4940d10e514645f08bbccbe1442345ebe39a

General

Target

SecuriteInfo.com.DOC.Kryptik.Q.893.xls
Size

294KB
MD5

8b6d08aa84e0a4f523a804afc89a8212
SHA1

c7f07421aa70e66b4bdb5350ba4c3529a00c4d7d
SHA256

61e798e2539635b290c475b23bbe4940d10e514645f08bbccbe1442345ebe39a
SHA512

23b4c196217e9b0923b9860aca873b2ea61d9405c1d911b100c7b58460eeae8799745832a2b84404a25b59506fd7ade21489fe544c2db1a9ea85683f91343060

Score

10^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 3676 wrote to memory of 728 3676 EXCEL.EXE rundll32.exe
PID 3676 wrote to memory of 728 3676 EXCEL.EXE rundll32.exe
Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

description	pid	process	target process
PID 3676 wrote to memory of 728	3676	EXCEL.EXE	rundll32.exe
PID 3676 wrote to memory of 728	3676	EXCEL.EXE	rundll32.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 use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE
3676	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3676 EXCEL.EXE

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	728	3676	rundll32.exe	EXCEL.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\SecuriteInfo.com.DOC.Kryptik.Q.893.xls"
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:3676

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\WbMFNqE\DTXZRqG\fytiOXY.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/728-0-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads