b1502cdbb5aeee57d0a5d38945c64855ba35c25d43a71bd72c3cf31665e5aa62

General

Target

0112_37832604.doc
Size

735KB
MD5

41b0f11eceaf9c2edf412e2562b7292a
SHA1

194e84aa15365ecb82c83b6fab156f743a106b42
SHA256

b1502cdbb5aeee57d0a5d38945c64855ba35c25d43a71bd72c3cf31665e5aa62
SHA512

ddf30d9f4876f9ea3920377a21e0fba80646ad35ef189bbf41695c01166dacc41e221622c83d376939087f03f155c3c835f5a5b371481767f9cefb6c6fecac73

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	2120	3132	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

35 3836 rundll32.exe
37 3836 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3836 rundll32.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

34 api.ipify.org
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3960 3836 WerFault.exe rundll32.exe

flow	pid	process
35	3836	rundll32.exe
37	3836	rundll32.exe

flow	ioc
34	api.ipify.org

pid	pid_target	process	target process
3960	3836	WerFault.exe	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{B14EDFDB-E621-4A65-B5CB-D8DFA0CE88EE}\0fiasS.tmp:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3132 WINWORD.EXE
3132 WINWORD.EXE

pid	process
3132	WINWORD.EXE
3132	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

rundll32.exeWerFault.exe

pid	process
3836	rundll32.exe
3836	rundll32.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe
3960	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3960 WerFault.exe
Token: SeBackupPrivilege 3960 WerFault.exe
Token: SeDebugPrivilege 3960 WerFault.exe
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

3132 WINWORD.EXE
3132 WINWORD.EXE
3132 WINWORD.EXE
3132 WINWORD.EXE
3132 WINWORD.EXE
3132 WINWORD.EXE
3132 WINWORD.EXE

description	pid	process
Token: SeRestorePrivilege	3960	WerFault.exe
Token: SeBackupPrivilege	3960	WerFault.exe
Token: SeDebugPrivilege	3960	WerFault.exe

pid	process
3132	WINWORD.EXE
3132	WINWORD.EXE
3132	WINWORD.EXE
3132	WINWORD.EXE
3132	WINWORD.EXE
3132	WINWORD.EXE
3132	WINWORD.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

WINWORD.EXErundll32.exe

description	pid	process	target process
PID 3132 wrote to memory of 3172	3132	WINWORD.EXE	splwow64.exe
PID 3132 wrote to memory of 3172	3132	WINWORD.EXE	splwow64.exe
PID 3132 wrote to memory of 2120	3132	WINWORD.EXE	rundll32.exe
PID 3132 wrote to memory of 2120	3132	WINWORD.EXE	rundll32.exe
PID 2120 wrote to memory of 3836	2120	rundll32.exe	rundll32.exe
PID 2120 wrote to memory of 3836	2120	rundll32.exe	rundll32.exe
PID 2120 wrote to memory of 3836	2120	rundll32.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\0112_37832604.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3132

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3172

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll,DllUnregisterServer
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll,DllUnregisterServer
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:3836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 1352
4⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll

MD5
1d52252cdbee03a732bc4951fc5639e9

SHA1
8c52016953aef6e2ee56013218c40dfe008c0f98

SHA256
372da9447db4ca966a6a9fd45f12519637a562953a88b6d92fb26d3699c14799

SHA512
abcd7f2529a3ea4e5ac1c4d7864e0974d7cc2df576fbc8c3756e7251a0307ec0f3f9948876786ec31ed9752fb4482f4abf8268dd05c2f20ca7576ed3d23bfdad

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll

MD5
1d52252cdbee03a732bc4951fc5639e9

SHA1
8c52016953aef6e2ee56013218c40dfe008c0f98

SHA256
372da9447db4ca966a6a9fd45f12519637a562953a88b6d92fb26d3699c14799

SHA512
abcd7f2529a3ea4e5ac1c4d7864e0974d7cc2df576fbc8c3756e7251a0307ec0f3f9948876786ec31ed9752fb4482f4abf8268dd05c2f20ca7576ed3d23bfdad

Download Submit
memory/2120-5-0x0000000000000000-mapping.dmp

Download
memory/3132-2-0x0000015663E80000-0x00000156644B7000-memory.dmp

Filesize
6.2MB

Download
memory/3172-3-0x0000000000000000-mapping.dmp

Download
memory/3172-4-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/3836-7-0x0000000000000000-mapping.dmp

Download
memory/3960-9-0x0000000004A00000-0x0000000004A01000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads