22043734ed3f774db7a88297286f6ecd56336d755cc19f1bd54f2a2ac58982cd

General

Target

0112_679538951.doc
Size

372KB
MD5

e3163d9a0638eb38b57d60a261c90fba
SHA1

7f717a2af835a52fa56d30d38f0379a3edacc7bd
SHA256

22043734ed3f774db7a88297286f6ecd56336d755cc19f1bd54f2a2ac58982cd
SHA512

a39b7ac2be33645357ca2d4bb28915788b186ac44e9dd82938d481f8e6f5e17883bd034137ef9c5e2956ae1eb88d677b37d7c6c83efb8330bcff9ba4655258d6

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	4088	500	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

36 1876 rundll32.exe
38 1876 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1876 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

35 api.ipify.org
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2084 1876 WerFault.exe rundll32.exe

flow	pid	process
36	1876	rundll32.exe
38	1876	rundll32.exe

flow	ioc
35	api.ipify.org

pid	pid_target	process	target process
2084	1876	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\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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{F138E509-F25D-433E-9B9F-97A71EC0DFE0}\0fiasS.tmp:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

500 WINWORD.EXE
500 WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

rundll32.exeWerFault.exe

pid	process
1876	rundll32.exe
1876	rundll32.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe
2084	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2084 WerFault.exe
Token: SeBackupPrivilege 2084 WerFault.exe
Token: SeDebugPrivilege 2084 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2084	WerFault.exe
Token: SeBackupPrivilege	2084	WerFault.exe
Token: SeDebugPrivilege	2084	WerFault.exe

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

WINWORD.EXE

pid	process
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE
500	WINWORD.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

WINWORD.EXErundll32.exe

description	pid	process	target process
PID 500 wrote to memory of 4092	500	WINWORD.EXE	splwow64.exe
PID 500 wrote to memory of 4092	500	WINWORD.EXE	splwow64.exe
PID 500 wrote to memory of 4088	500	WINWORD.EXE	rundll32.exe
PID 500 wrote to memory of 4088	500	WINWORD.EXE	rundll32.exe
PID 4088 wrote to memory of 1876	4088	rundll32.exe	rundll32.exe
PID 4088 wrote to memory of 1876	4088	rundll32.exe	rundll32.exe
PID 4088 wrote to memory of 1876	4088	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_679538951.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:500

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4092

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:4088

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:1876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1876 -s 1344
4⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2084

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
10727db5fabb9df4ff0b301b9cbe5b71

SHA1
9e70e123826b629ae4fe4202e34925e2b3b8c948

SHA256
edabef17fce2aaca61dbd17a57baf780cd82a2b0189b0cf3c5a7a3ca07e94a44

SHA512
1f9e06641f4b543b056975dfc1f3064d0d54b03a9d21fb28ce3582236228fc996fc94e532b27f5c9ebf88d624392e97c4a04d0bc2de649ca0ff9281a38fe21d6

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

MD5
10727db5fabb9df4ff0b301b9cbe5b71

SHA1
9e70e123826b629ae4fe4202e34925e2b3b8c948

SHA256
edabef17fce2aaca61dbd17a57baf780cd82a2b0189b0cf3c5a7a3ca07e94a44

SHA512
1f9e06641f4b543b056975dfc1f3064d0d54b03a9d21fb28ce3582236228fc996fc94e532b27f5c9ebf88d624392e97c4a04d0bc2de649ca0ff9281a38fe21d6

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memory/500-2-0x000001B1F62A0000-0x000001B1F68D7000-memory.dmp

Filesize
6.2MB

Download
memory/1876-7-0x0000000000000000-mapping.dmp

Download
memory/2084-9-0x0000000004480000-0x0000000004481000-memory.dmp

Filesize
4KB

Download
memory/4088-5-0x0000000000000000-mapping.dmp

Download
memory/4092-3-0x0000000000000000-mapping.dmp

Download
memory/4092-4-0x0000000002450000-0x0000000002451000-memory.dmp

Filesize
4KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads