40a2ad9eb3f20c7d4378fe86fca0a18f89230aa06d73a99ae2f08a32eccebede

General

Target

charge.12.20.doc
Size

90KB
MD5

4757838ce415a0ab23282cb608ef45d5
SHA1

fa5ee9b84f35b4dbb8fe426684aedfaaca979134
SHA256

40a2ad9eb3f20c7d4378fe86fca0a18f89230aa06d73a99ae2f08a32eccebede
SHA512

e867c56a1a12ff67fbcee46d8878f31fc9c3170b3b9efad6118d93c0cb3c5e56201ced7690a204b7e942065c428f079ff8c94e68fb4025daa4d5ab24e4cef61c

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	2012	1036	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 7 IoCs

Processes:

mshta.exerundll32.exe

flow pid process

12 508 mshta.exe
28 3548 rundll32.exe
30 3548 rundll32.exe
36 3548 rundll32.exe
38 3548 rundll32.exe
40 3548 rundll32.exe
41 3548 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3548 rundll32.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
12	508	mshta.exe
28	3548	rundll32.exe
30	3548	rundll32.exe
36	3548	rundll32.exe
38	3548	rundll32.exe
40	3548	rundll32.exe
41	3548	rundll32.exe

pid	process
3548	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-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1036 WINWORD.EXE
1036 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3548 rundll32.exe
3548 rundll32.exe

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

pid	process
3548	rundll32.exe
3548	rundll32.exe

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

WINWORD.EXE

pid	process
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE
1036	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXErundll32.exemshta.exe

description	pid	process	target process
PID 1036 wrote to memory of 2012	1036	WINWORD.EXE	rundll32.exe
PID 1036 wrote to memory of 2012	1036	WINWORD.EXE	rundll32.exe
PID 2012 wrote to memory of 508	2012	rundll32.exe	mshta.exe
PID 2012 wrote to memory of 508	2012	rundll32.exe	mshta.exe
PID 2012 wrote to memory of 508	2012	rundll32.exe	mshta.exe
PID 508 wrote to memory of 3548	508	mshta.exe	rundll32.exe
PID 508 wrote to memory of 3548	508	mshta.exe	rundll32.exe
PID 508 wrote to memory of 3548	508	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\charge.12.20.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:1036

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:2012

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:508

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\programdata\a68ZHI.pdf,ShowDialogA -r
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:3548

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
38c233c7e7a678300e46b5b6b14ba8c1

SHA1
bbd23607bd8248cfe4862f87e0090009ff1ebdc9

SHA256
120e6785e11db67b26e44abefbbadf86900dbae78ae815b66b8c75d10e395370

SHA512
f707c795b9b375b3960182ed07ea75052ebdc6f10bb8bda0711a32ea6a39fcebd5b9c7f6131c109c1c73458cc557b7f7ccc643da268a81a9feba7ee5b29dda22

Download Submit
\??\c:\programdata\a68ZHI.pdf
MD5
570ae4538db42e12a48736413aee4ab4

SHA1
8fdc4b3f4f49eacf85c0a878e584c51d6972045d

SHA256
d407c1e5646f7ab99cb9b0cf047398ffce10b0d98863e25c11bfa7e69d933435

SHA512
c9a4442588b45de1be0f6afdf44da610c18308a66a9e86e34a59fd7f9129b507c5999a7d3abb463e1817df9be9a0a1ceda57998d96e92bbd401b1cf2c246caec

Download Submit
\ProgramData\a68ZHI.pdf
MD5
570ae4538db42e12a48736413aee4ab4

SHA1
8fdc4b3f4f49eacf85c0a878e584c51d6972045d

SHA256
d407c1e5646f7ab99cb9b0cf047398ffce10b0d98863e25c11bfa7e69d933435

SHA512
c9a4442588b45de1be0f6afdf44da610c18308a66a9e86e34a59fd7f9129b507c5999a7d3abb463e1817df9be9a0a1ceda57998d96e92bbd401b1cf2c246caec

Download Submit
memory/508-9-0x0000000000000000-mapping.dmp

Download
memory/1036-2-0x000002616D720000-0x000002616DD57000-memory.dmp

Filesize
6.2MB

Download
memory/2012-7-0x0000000000000000-mapping.dmp

Download
memory/3548-10-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads