bc33970f8fd9d889e5e9139a27eb1b7e896d303b2486b4f8a81b22db03c7aad3

Resubmissions

21-01-2021 15:23

210121-ljpevdw1ve 8

17-12-2020 22:10

201217-t143zp7zpa 10

Analysis

max time kernel
139s
max time network
135s
platform
windows10_x64
resource
win10v20201028
submitted
17-12-2020 22:10

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Report Analysis Logs

General

Target

bc33970f8fd9d889e5e9139a27eb1b7e896d303b2486b4f8a81b22db03c7aad3.doc
Size

59KB
MD5

3f800c4e7499313d94e7b5b340e74bde
SHA1

531904218d798930796fb6019811be5a1765fd11
SHA256

bc33970f8fd9d889e5e9139a27eb1b7e896d303b2486b4f8a81b22db03c7aad3
SHA512

5c91ae537fd5a135773a0b41e942f06a1f2eaf43c089ab1c2679133bfc64969c9efb29f892acc24d2366501184d7ca29664f0a8c0772eaca82f7b22bc92dc888

Score

10^/10

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\WINWORD.EXE is not expected to spawn this process	4068	652	rundll32.exe	WINWORD.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:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

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

Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 20 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

652 WINWORD.EXE
652 WINWORD.EXE

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 652 wrote to memory of 4068	652	WINWORD.EXE	rundll32.exe
PID 652 wrote to memory of 4068	652	WINWORD.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\bc33970f8fd9d889e5e9139a27eb1b7e896d303b2486b4f8a81b22db03c7aad3.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SYSTEM32\rundll32.exe
rundll32 c:\programdata\PZLwJ.pdf,ShowDialogA -r
2⤵
- Process spawned unexpected child process
PID:4068

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\??\c:\programdata\PZLwJ.pdf
MD5
c45f964d196fda703e75980e93cc5da5

SHA1
bf52873cb9f4e7520ed41ca85445a0bee53b4761

SHA256
23e716bd0299a1d2b428a8525d480aa5999cc36c36646a09177ee5700088f634

SHA512
8a02be01e0c5da5954e2e1f85148b45cd6bbbbd1f36f7806436752c608d4b7c6bb6f31f3e0dbdbb5a47600ddc2a52c08c2ff6c0ea6f68f0a1fb9edb01ef3fa58

Download Submit
memory/652-2-0x00007FFC2FA20000-0x00007FFC30057000-memory.dmp

Filesize
6.2MB

Download
memory/4068-3-0x0000000000000000-mapping.dmp

Download