336422c5dbfc18b01ae8ea697c817878596a5224f00c598e3667654e1ef7f3e6

Resubmissions

09-07-2020 19:48

200709-9lbrfjbh3s 8

Analysis

max time kernel
128s
max time network
151s
platform
windows10_x64
resource
win10v200430
submitted
09-07-2020 19:48

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General

Target

Form_00062540125.xls
Size

78KB
MD5

7b617d2a6ef074c746f91f5010fb274f
SHA1

fb6352bb39715a5142fd9979898a04bc274a9a4c
SHA256

336422c5dbfc18b01ae8ea697c817878596a5224f00c598e3667654e1ef7f3e6
SHA512

95577c78dfafcdf98403b6550c2ee25c8069091d5d3ef60a3ab9b916cb11d831f034c65b4e34208fd735510349ae0a4bdbec99f41507b2e38b93aa6f40733366

Score

6^/10

Malware Config

Signatures

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

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE
1484	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1484	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1484	EXCEL.EXE
1484	EXCEL.EXE
4036	dwwin.exe
4036	dwwin.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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3988	1484	DW20.EXE	67

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 3988	1484	EXCEL.EXE	72
PID 1484 wrote to memory of 3988	1484	EXCEL.EXE	72
PID 3988 wrote to memory of 4036	3988	DW20.EXE	73
PID 3988 wrote to memory of 4036	3988	DW20.EXE	73

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Form_00062540125.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
  "C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4396
  2⤵
  - Process spawned suspicious child process
  - Suspicious use of WriteProcessMemory
  PID:3988
- - C:\Windows\system32\dwwin.exe
    C:\Windows\system32\dwwin.exe -x -s 4396
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4036

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4036-2-0x0000021237290000-0x0000021237291000-memory.dmp

Filesize
4KB

Download
memory/4036-3-0x0000021237290000-0x0000021237291000-memory.dmp

Filesize
4KB

Download
memory/4036-5-0x0000021237AC0000-0x0000021237AC1000-memory.dmp

Filesize
4KB

Download
memory/4036-8-0x0000021237EC0000-0x0000021237EC1000-memory.dmp

Filesize
4KB

Download
memory/4036-10-0x0000021237D20000-0x0000021237D21000-memory.dmp

Filesize
4KB

Download
memory/4036-11-0x0000021237D20000-0x0000021237D21000-memory.dmp

Filesize
4KB

Download
memory/4036-12-0x0000021237D20000-0x0000021237D21000-memory.dmp

Filesize
4KB

Download
memory/4036-13-0x0000021237A00000-0x0000021237A01000-memory.dmp

Filesize
4KB

Download