30739a63f06056178c395aea513686a49652ed9cb7f81c4baabee6cd8f950c9f

General

Target

dictate.12.20.doc
Size

80KB
MD5

62c50cfe2bf091d4467d173269013bc1
SHA1

3aa44d53b3f6a7e819aef69f11f5f3bd7c9c76e1
SHA256

30739a63f06056178c395aea513686a49652ed9cb7f81c4baabee6cd8f950c9f
SHA512

c86444b42e7633ac05f349fa363de6e0537579cf86aff4158737a32f7298f6b7ee7eeaabc1d628f576facef0c2541a1150c6adce3d4e773b31a132006933c20e

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:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1308 3460 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1308	3460	rundll32.exe

Blocklisted process makes network request 9 IoCs

Processes:

mshta.exerundll32.exe

flow	pid	process
23	1172	mshta.exe
30	3768	rundll32.exe
32	3768	rundll32.exe
34	3768	rundll32.exe
36	3768	rundll32.exe
38	3768	rundll32.exe
40	3768	rundll32.exe
45	3768	rundll32.exe
46	3768	rundll32.exe

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3768 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\plugin.ini rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
3768	rundll32.exe

description	ioc	process
File created	C:\Windows\SysWOW64\plugin.ini	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:

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

Modifies registry class 1 IoCs

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

652 WINWORD.EXE
652 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3768 rundll32.exe
3768 rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	rundll32.exe

pid	process
3768	rundll32.exe
3768	rundll32.exe

Suspicious use of SetWindowsHookEx 17 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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exemshta.exe

description	pid	process	target process
PID 1308 wrote to memory of 1172	1308	rundll32.exe	mshta.exe
PID 1308 wrote to memory of 1172	1308	rundll32.exe	mshta.exe
PID 1308 wrote to memory of 1172	1308	rundll32.exe	mshta.exe
PID 1172 wrote to memory of 3768	1172	mshta.exe	rundll32.exe
PID 1172 wrote to memory of 3768	1172	mshta.exe	rundll32.exe
PID 1172 wrote to memory of 3768	1172	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\dictate.12.20.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:652

C:\Windows\system32\rundll32.exe
rundll32.exe url.dll,OpenURL c:\users\public\index.hta
1⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1308

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}
2⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1172

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\programdata\a8crv.pdf,ShowDialogA -r
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:3768

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
afc2e8e99d54697628a411c8445d6dca

SHA1
6fad0bbe6e1ffb2ab894c47d3fb7a8bdeb0a8ef6

SHA256
7e4ac89ede57f68f64f2e4fda568998ad3236862a30ba2c4b5403391bbb4cb75

SHA512
224da383fe131674196f7d6ecb1564e1709821721354a14e5893714f2ce438e85649337e643c00c3aeb68c6d61c16f474435e064cf68cedb314802118ef8bf39

Download Submit
\??\c:\programdata\a8crv.pdf
MD5
927b860c90d844177ea9c9bdf4c9831a

SHA1
5ced404d98144a73b8af4dcb390f0c660f3183db

SHA256
1bf0bc59fb4d4618097b31bc86fdbf44e01240e7bbbbd1ad1be7ece79f5d3b3d

SHA512
eb352776c894a5595d6e7e90047552a2b44a6dfc297d5044dd2033bedd120bd17da59c4b08ea6cc6fd9ceceaa8867a06e564a7f1ea12360a8f80b2191e02b451

Download Submit
\ProgramData\a8crv.pdf
MD5
927b860c90d844177ea9c9bdf4c9831a

SHA1
5ced404d98144a73b8af4dcb390f0c660f3183db

SHA256
1bf0bc59fb4d4618097b31bc86fdbf44e01240e7bbbbd1ad1be7ece79f5d3b3d

SHA512
eb352776c894a5595d6e7e90047552a2b44a6dfc297d5044dd2033bedd120bd17da59c4b08ea6cc6fd9ceceaa8867a06e564a7f1ea12360a8f80b2191e02b451

Download Submit
memory/652-2-0x000001EB8A1D0000-0x000001EB8A807000-memory.dmp

Filesize
6.2MB

Download
memory/1172-4-0x0000000000000000-mapping.dmp

Download
memory/3768-5-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads