0c9bf697ea913a97283d559bdd59fe83fef51a5038797dbfc9a8a7835f2968d6

General

Target

specifics_02.01.2021.doc
Size

75KB
MD5

68ced19043e3f6f97fb8b4624f02a8e9
SHA1

e2975e9f468ce3158c9f7f90decc680a70ae7234
SHA256

0c9bf697ea913a97283d559bdd59fe83fef51a5038797dbfc9a8a7835f2968d6
SHA512

82dd4fecc9e3245b7c8b7f2db6ee43bbbeccc0eb10b1a108d313bedc4750482de02f3a6bd15f8512b738e2ef02c0a353c8d60c08a1574b53ee350d2d0fae67c9

Score

10^/10

ransomware

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

explorer.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	1436	728	explorer.exe	WINWORD.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

30 1800 mshta.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

flow	pid	process
30	1800	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 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:

explorer.exe

description ioc process

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

Processes:

WINWORD.EXE

pid process

728 WINWORD.EXE
728 WINWORD.EXE

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

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXEexplorer.exemshta.exe

description	pid	process	target process
PID 728 wrote to memory of 1436	728	WINWORD.EXE	explorer.exe
PID 728 wrote to memory of 1436	728	WINWORD.EXE	explorer.exe
PID 2224 wrote to memory of 1800	2224	explorer.exe	mshta.exe
PID 2224 wrote to memory of 1800	2224	explorer.exe	mshta.exe
PID 2224 wrote to memory of 1800	2224	explorer.exe	mshta.exe
PID 1800 wrote to memory of 2136	1800	mshta.exe	regsvr32.exe
PID 1800 wrote to memory of 2136	1800	mshta.exe	regsvr32.exe
PID 1800 wrote to memory of 2136	1800	mshta.exe	regsvr32.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\specifics_02.01.2021.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:728

C:\Windows\explorer.exe
explorer c:\programdata\aSziC.hta
2⤵
- Process spawned unexpected child process
PID:1436

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2224

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\ProgramData\aSziC.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" c:\programdata\aSziC.tmp
3⤵
PID:2136

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:\ProgramData\aSziC.hta
MD5
93de516d42854befc910a63c508aa44f

SHA1
96b5bc26f3df6d0e611b8e20641840d3a4fd9b15

SHA256
42e11567c6b657683163aac63975452398126236839860979c0abaabbd8b5a10

SHA512
df63fda9f6153fa71746c4670bc6469a14a4d649933fa517639da79381385436a305a7d24d78216903a6d81cde18d196b96f984a8aee8ad2f5e64ac73cf8c1d0

Download Submit
\??\c:\programdata\aSziC.tmp
MD5
f048b70a6033069cf619ac435b87100b

SHA1
59559603bd9bea22084ea1ba5b4acb6ffcd0f5d8

SHA256
fbe62ef64bf4525a5be63ff164e040791087f2fcee620a7a99bdffa9167caaa6

SHA512
98d1a0b609b54ed2545c7be560b14f2f81a7a60dc0b480f5879080534784b303a2e6e7aceb18690341c447a70d29529949129a39473d68c71c83bf975d8f1107

Download Submit
memory/728-2-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-3-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-4-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-5-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-6-0x00007FF99AED0000-0x00007FF99B507000-memory.dmp

Filesize
6.2MB

Download
memory/728-7-0x000001D69A7D0000-0x000001D69A7D4000-memory.dmp

Filesize
16KB

Download
memory/1436-8-0x0000000000000000-mapping.dmp

Download
memory/1800-10-0x0000000000000000-mapping.dmp

Download
memory/2136-11-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads