53443315360c434457eca1626003a288924a363677a4e1ca1bbaad902f677674

Analysis

max time kernel
103s
max time network
68s
platform
windows7_x64
resource
win7
submitted
08-07-2020 05:36

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General

Target

IRS_form_7559663.xls
Size

78KB
MD5

9dad374d4a2553733ebf424e3fde48e4
SHA1

905ceab79cf08d1e66293e77fc0c7bbf9326ac69
SHA256

53443315360c434457eca1626003a288924a363677a4e1ca1bbaad902f677674
SHA512

8219a9cf5a80370aa30609e48f580a956874080205ee50102416e6ac8c1c27d62119dcd2e4d10edd507b890fe4a0dfe2cadfedc702fdafe379f206343ad5dbf4

Score

6^/10

Malware Config

Signatures

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

dwwin.exe

pid process

1076 dwwin.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

284 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

284 EXCEL.EXE
284 EXCEL.EXE
284 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

EXCEL.EXE

pid process

284 EXCEL.EXE

pid	process
1076	dwwin.exe

pid	process
284	EXCEL.EXE

pid	process
284	EXCEL.EXE
284	EXCEL.EXE
284	EXCEL.EXE

pid	process
284	EXCEL.EXE

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.EXE

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1100	284	DW20.EXE	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 284 wrote to memory of 1100	284	EXCEL.EXE	DW20.EXE
PID 284 wrote to memory of 1100	284	EXCEL.EXE	DW20.EXE
PID 284 wrote to memory of 1100	284	EXCEL.EXE	DW20.EXE
PID 284 wrote to memory of 1100	284	EXCEL.EXE	DW20.EXE
PID 284 wrote to memory of 1100	284	EXCEL.EXE	DW20.EXE
PID 1100 wrote to memory of 1076	1100	DW20.EXE	dwwin.exe
PID 1100 wrote to memory of 1076	1100	DW20.EXE	dwwin.exe
PID 1100 wrote to memory of 1076	1100	DW20.EXE	dwwin.exe

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\IRS_form_7559663.xls
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:284

C:\PROGRA~1\COMMON~1\MICROS~1\DW\DW20.EXE
"C:\PROGRA~1\COMMON~1\MICROS~1\DW\DW20.EXE" -x -s 1168
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 1168
3⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:1076

Network

MITRE ATT&CK Matrix

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Downloads

C:\Users\Admin\AppData\Local\Temp\71822.cvr

Download Submit
memory/1076-1-0x0000000000000000-mapping.dmp

Download
memory/1076-2-0x0000000001D10000-0x0000000001D21000-memory.dmp

Filesize
68KB

Download
memory/1076-4-0x00000000021C0000-0x00000000021D1000-memory.dmp

Filesize
68KB

Download
memory/1100-0-0x0000000000000000-mapping.dmp

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