a36a189ee6c1ae3518a71f7560b3046facc30942f907f9244cf1b18573bbe862

General

Target

维修一三组10月月报.xls
Size

110KB
MD5

21c6b1559df852e77e8d201c0a9130e8
SHA1

bfbaa28263b6029b3964e34c8e7544de346a9981
SHA256

297f3ee2b8bc14163e5d7971350adb587a847610acc38cc88160d3679181a5a0
SHA512

42db083f1d52bbdb44fcc1cbb84b0a3d6cc4a95b88d2c6f2a289b07a5f4f9a1586d16c7b3ce01fe9aa205435fe962770c159eed2074e8eac517b460ea6bd5098
SSDEEP

1536:lOOOzcQvs1J8e8tSPQbkVpHj/0+Z95Qpy2eLTx81v6WVbrzQgiUCnyITkR62lLQ5:69y2UWVbrzQgDITk9qjhJtXwL5kbg4T

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

cmd.execmd.execmd.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	212	4928	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3092	4928	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3712	4928	cmd.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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\4CE65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4928 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\4CE65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE
4928	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4928 wrote to memory of 212	4928	EXCEL.EXE	cmd.exe
PID 4928 wrote to memory of 212	4928	EXCEL.EXE	cmd.exe
PID 4928 wrote to memory of 3092	4928	EXCEL.EXE	cmd.exe
PID 4928 wrote to memory of 3092	4928	EXCEL.EXE	cmd.exe
PID 4928 wrote to memory of 3712	4928	EXCEL.EXE	cmd.exe
PID 4928 wrote to memory of 3712	4928	EXCEL.EXE	cmd.exe
PID 212 wrote to memory of 4840	212	cmd.exe	attrib.exe
PID 212 wrote to memory of 4840	212	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4840 attrib.exe

pid	process
4840	attrib.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\维修一三组10月月报.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4928

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:212

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4840

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:3092

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:3712

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/212-139-0x0000000000000000-mapping.dmp

Download
memory/3092-140-0x0000000000000000-mapping.dmp

Download
memory/3712-141-0x0000000000000000-mapping.dmp

Download
memory/4840-142-0x0000000000000000-mapping.dmp

Download
memory/4928-135-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-137-0x00007FFFBB660000-0x00007FFFBB670000-memory.dmp

Filesize
64KB

Download
memory/4928-138-0x00007FFFBB660000-0x00007FFFBB670000-memory.dmp

Filesize
64KB

Download
memory/4928-136-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-132-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-134-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-133-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-144-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-145-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-146-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download
memory/4928-147-0x00007FFFBD930000-0x00007FFFBD940000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads