8bdcc1592ffaee9154ed4331a44fa52af3b2baebbd4ef71840adc73b38635d9e

General

Target

Invoice #035.xlsm
Size

155KB
MD5

77f482d7c33d70474d451cf2546f4b4f
SHA1

9ef86f2a8171e50ec5734886d895885280e029d8
SHA256

8bdcc1592ffaee9154ed4331a44fa52af3b2baebbd4ef71840adc73b38635d9e
SHA512

f656c8f2a14ddb066469f20ab5303f5a0ec18d17648e67a59fde4902dc923f5a70fe4cc4964251a705275e98073df76821ec6e3ee8d93982fb86ec71a698404a

Score

10^/10

evasion trojan

Malware Config

Signatures

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	3520	3944	rundll32.exe	EXCEL.EXE

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2620 rundll32.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe

pid	process
2620	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	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 behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3944 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

EXCEL.EXErundll32.exe

description	pid	process	target process
PID 3944 wrote to memory of 3520	3944	EXCEL.EXE	rundll32.exe
PID 3944 wrote to memory of 3520	3944	EXCEL.EXE	rundll32.exe
PID 3520 wrote to memory of 2620	3520	rundll32.exe	rundll32.exe
PID 3520 wrote to memory of 2620	3520	rundll32.exe	rundll32.exe
PID 3520 wrote to memory of 2620	3520	rundll32.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\Invoice #035.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3944

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Roaming\43590..dll" JsVarAddRef
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3520

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Roaming\43590..dll" JsVarAddRef
3⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\43590..dll
MD5
8795a6a11cfe87be8ad805ec83baa5b2

SHA1
135bd9dda8242619d8e4f3b472477de8bb7788e8

SHA256
15a3d386af1b81a23eef79200a3de16c76ffb06b25fe9c11b9b6f0d5a5d0aec7

SHA512
743d578af7df4c9b3c2570a8f030bb12ae2c60cc41b9e25eef7d456e71ec75024dc9ddf7c5e9fa467dbc5308d4a18b8e28ed442726bcbfae1b7f084a3e224063

Download Submit
\Users\Admin\AppData\Roaming\43590..dll
MD5
8795a6a11cfe87be8ad805ec83baa5b2

SHA1
135bd9dda8242619d8e4f3b472477de8bb7788e8

SHA256
15a3d386af1b81a23eef79200a3de16c76ffb06b25fe9c11b9b6f0d5a5d0aec7

SHA512
743d578af7df4c9b3c2570a8f030bb12ae2c60cc41b9e25eef7d456e71ec75024dc9ddf7c5e9fa467dbc5308d4a18b8e28ed442726bcbfae1b7f084a3e224063

Download Submit
memory/2620-183-0x0000000002D30000-0x0000000002D36000-memory.dmp

Filesize
24KB

Download
memory/2620-181-0x0000000000000000-mapping.dmp

Download
memory/3520-179-0x0000000000000000-mapping.dmp

Download
memory/3944-117-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-121-0x00007FFDC2F70000-0x00007FFDC405E000-memory.dmp

Filesize
16.9MB

Download
memory/3944-123-0x00007FFDC1070000-0x00007FFDC2F65000-memory.dmp

Filesize
31.0MB

Download
memory/3944-122-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-118-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-114-0x00007FF793FB0000-0x00007FF797566000-memory.dmp

Filesize
53.7MB

Download
memory/3944-116-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-115-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads