827fb38b70c105c9b5c7855942a787e057a26b51ba63b20410eba23f3ed59545

General

Target

rule_12.09.2020.doc
Size

90KB
MD5

8ac8cf4ede5bb1df296c8933b31ba1a2
SHA1

b7392463d4f63bd4e1fab371a44a4d1a3a9a04d6
SHA256

827fb38b70c105c9b5c7855942a787e057a26b51ba63b20410eba23f3ed59545
SHA512

0f01020f3b7c9cf288a3ebc015b20d5405e976ce95c18f64f2c6aec8614690ffb83eb92b11152994bd236eb5681a26cf9ff0e62f84420cb6d69c5ea0b5300a1b

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	188	744	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

13 2760 mshta.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
13	2760	mshta.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

Modifies registry class 1 IoCs

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

744 WINWORD.EXE
744 WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings	rundll32.exe

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

WINWORD.EXE

pid	process
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE
744	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXErundll32.exemshta.exe

description	pid	process	target process
PID 744 wrote to memory of 188	744	WINWORD.EXE	rundll32.exe
PID 744 wrote to memory of 188	744	WINWORD.EXE	rundll32.exe
PID 188 wrote to memory of 2760	188	rundll32.exe	mshta.exe
PID 188 wrote to memory of 2760	188	rundll32.exe	mshta.exe
PID 188 wrote to memory of 2760	188	rundll32.exe	mshta.exe
PID 2760 wrote to memory of 4076	2760	mshta.exe	rundll32.exe
PID 2760 wrote to memory of 4076	2760	mshta.exe	rundll32.exe
PID 2760 wrote to memory of 4076	2760	mshta.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\rule_12.09.2020.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:744

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" url.dll,OpenURL c:\users\public\index.hta
2⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:188

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\index.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2760

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\programdata\aeigp.pdf,ShowDialogA -r
4⤵
PID:4076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\users\public\index.hta
MD5
172db1539651f272465a80b17f871539

SHA1
c3bd9d6bb0400080aff969f5c134bc8db6b5d3c1

SHA256
3f93cf87175a31a3c7099ad11d759e2e48ea509e22d604f5a4cbf49f5c36c5e9

SHA512
7f55f2e83f8eea348115cecb487ad590d29d5dcffe6413bd952bcc08476d6e27dc765ccf2a8dd337d3dab8e8565fc987eb91497e748ea33349c99b1c6169e24d

Download Submit
\??\c:\programdata\aeigp.pdf
MD5
e24923623f850e643381bf07f9fe302f

SHA1
f20157e0eb8c50c1a5a878584d1a8fc065a1ebc2

SHA256
169802b9432138b80f146f5f5e9bd1937e2bdf2204add4497e300fbc97f78e93

SHA512
9cf7645ae106a1105947cec19b08967dd44fca76536a92252273da5bcf87b173e061e8145d2519a2775e94ec539864b374b096401ec0ed59f5fbba88ab81e62b

Download Submit
memory/188-6-0x0000000000000000-mapping.dmp

Download
memory/744-2-0x000001A1325A0000-0x000001A132BD7000-memory.dmp

Filesize
6.2MB

Download
memory/744-3-0x000001A13C23E000-0x000001A13C25F000-memory.dmp

Filesize
132KB

Download
memory/744-4-0x000001A13E6D9000-0x000001A13E6DE000-memory.dmp

Filesize
20KB

Download
memory/744-5-0x000001A13E6D9000-0x000001A13E6DE000-memory.dmp

Filesize
20KB

Download
memory/2760-8-0x0000000000000000-mapping.dmp

Download
memory/4076-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads