38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b

General

Target

38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b.xls
Size

102KB
MD5

1f82b1bdae3924185845d3c1c624b407
SHA1

ac544bbe29badfad77a5d3bdc99ecf3c0657c3b8
SHA256

38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b
SHA512

410bf653d3f805cd22774b66316e3390ac1c0c72c257315030867f1bb4c8e3c0c35250f0ecb8d7a294d72125bc798f22de43db88b59d3e600810b97362ea8413
SSDEEP

3072:jTQn6v7yZmspH7+7alMisPI4ukoRWGNTxfAxo2jcc0lbxOrLHDJtXwvd:nQn6v7yZmspH7+7alMisPI4ukoRWGNTB

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	2156	4192	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3180	4192	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2300	4192	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4192 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE
4192 EXCEL.EXE

pid	process
4192	EXCEL.EXE

pid	process
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4192 wrote to memory of 3496	4192	EXCEL.EXE	splwow64.exe
PID 4192 wrote to memory of 3496	4192	EXCEL.EXE	splwow64.exe
PID 4192 wrote to memory of 2156	4192	EXCEL.EXE	cmd.exe
PID 4192 wrote to memory of 2156	4192	EXCEL.EXE	cmd.exe
PID 4192 wrote to memory of 3180	4192	EXCEL.EXE	cmd.exe
PID 4192 wrote to memory of 3180	4192	EXCEL.EXE	cmd.exe
PID 4192 wrote to memory of 2300	4192	EXCEL.EXE	cmd.exe
PID 4192 wrote to memory of 2300	4192	EXCEL.EXE	cmd.exe
PID 2156 wrote to memory of 2968	2156	cmd.exe	attrib.exe
PID 2156 wrote to memory of 2968	2156	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2968 attrib.exe

pid	process
2968	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\38d82acb7ac03228d0d5f9a38da10e6c7e3e0a695443129ab5651b4cc63f454b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3496

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:2156

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2968

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:3180

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:2300

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:2632

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\db65f295b4ca4b8b8fd82f35a6cd0688 /t 5004 /p 4192
1⤵
PID:3640

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2156-140-0x0000000000000000-mapping.dmp

Download
memory/2300-142-0x0000000000000000-mapping.dmp

Download
memory/2968-143-0x0000000000000000-mapping.dmp

Download
memory/3180-141-0x0000000000000000-mapping.dmp

Download
memory/3496-139-0x0000000000000000-mapping.dmp

Download
memory/4192-132-0x00007FFB94410000-0x00007FFB94420000-memory.dmp

Filesize
64KB

Download
memory/4192-134-0x00007FFB94410000-0x00007FFB94420000-memory.dmp

Filesize
64KB

Download
memory/4192-133-0x00007FFB94410000-0x00007FFB94420000-memory.dmp

Filesize
64KB

Download
memory/4192-135-0x00007FFB94410000-0x00007FFB94420000-memory.dmp

Filesize
64KB

Download
memory/4192-136-0x00007FFB94410000-0x00007FFB94420000-memory.dmp

Filesize
64KB

Download
memory/4192-137-0x00007FFB923B0000-0x00007FFB923C0000-memory.dmp

Filesize
64KB

Download
memory/4192-138-0x00007FFB923B0000-0x00007FFB923C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads