40c3eb22a02601cf70a4ae08eeaa5805144386bc13882e5f110c133b1d0ede8e

General

Target

0113_88514789.doc
Size

633KB
MD5

e920a98ccda2ecf95cca8e6d4e66e0ac
SHA1

e39ee8709a55f915446d4d22d581aa03422b6378
SHA256

40c3eb22a02601cf70a4ae08eeaa5805144386bc13882e5f110c133b1d0ede8e
SHA512

55948ee47c7e22fafef4b387047312699c926f7fae0cb8d08fdc0c761abd146ba52a712873d13ef980309e981102e07608f65a10236765a5791bb4fc26387965

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	2176	3372	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

33 1140 rundll32.exe
35 1140 rundll32.exe
37 1140 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1140 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

32 api.ipify.org

flow	pid	process
33	1140	rundll32.exe
35	1140	rundll32.exe
37	1140	rundll32.exe

pid	process
1140	rundll32.exe

flow	ioc
32	api.ipify.org

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

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{C3ED3F23-F896-4BA3-8A76-A5526BC57378}\0fiasS.tmp:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3372 WINWORD.EXE
3372 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

1140 rundll32.exe
1140 rundll32.exe
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

3372 WINWORD.EXE
3372 WINWORD.EXE
3372 WINWORD.EXE
3372 WINWORD.EXE
3372 WINWORD.EXE
3372 WINWORD.EXE
3372 WINWORD.EXE

pid	process
3372	WINWORD.EXE
3372	WINWORD.EXE

pid	process
1140	rundll32.exe
1140	rundll32.exe

pid	process
3372	WINWORD.EXE
3372	WINWORD.EXE
3372	WINWORD.EXE
3372	WINWORD.EXE
3372	WINWORD.EXE
3372	WINWORD.EXE
3372	WINWORD.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

WINWORD.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 3372 wrote to memory of 3020	3372	WINWORD.EXE	splwow64.exe
PID 3372 wrote to memory of 3020	3372	WINWORD.EXE	splwow64.exe
PID 3372 wrote to memory of 2176	3372	WINWORD.EXE	rundll32.exe
PID 3372 wrote to memory of 2176	3372	WINWORD.EXE	rundll32.exe
PID 2176 wrote to memory of 1140	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1140	2176	rundll32.exe	rundll32.exe
PID 2176 wrote to memory of 1140	2176	rundll32.exe	rundll32.exe
PID 1140 wrote to memory of 3820	1140	rundll32.exe	svchost.exe
PID 1140 wrote to memory of 3820	1140	rundll32.exe	svchost.exe
PID 1140 wrote to memory of 3820	1140	rundll32.exe	svchost.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\0113_88514789.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:3372
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:3020
- 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:2176
- - 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
    - Suspicious use of WriteProcessMemory
    PID:1140
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\System32\svchost.exe
      4⤵
      PID:3820

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
8a8ab0861760e3ac3659fd2b35a4c1ce

SHA1
378a2da03377cc36f5bbded8a8af31f610d2b843

SHA256
6caccc64a9db7cfce75076ad273d85d108f5b764fcbbb865fd27c91f86cccfad

SHA512
ac3b0a0ccd6081d2fae578631e484e6178e55f996056f4537d3c9000aa234cd969f8536901579d002d9a15151435b43b3e2a89dbc3261d1b55990da21ad0defc

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

MD5
8a8ab0861760e3ac3659fd2b35a4c1ce

SHA1
378a2da03377cc36f5bbded8a8af31f610d2b843

SHA256
6caccc64a9db7cfce75076ad273d85d108f5b764fcbbb865fd27c91f86cccfad

SHA512
ac3b0a0ccd6081d2fae578631e484e6178e55f996056f4537d3c9000aa234cd969f8536901579d002d9a15151435b43b3e2a89dbc3261d1b55990da21ad0defc

Download Submit
memory/1140-7-0x0000000000000000-mapping.dmp

Download
memory/2176-5-0x0000000000000000-mapping.dmp

Download
memory/3020-3-0x0000000000000000-mapping.dmp

Download
memory/3020-4-0x00000000026B0000-0x00000000026B1000-memory.dmp

Filesize
4KB

Download
memory/3372-2-0x0000024335970000-0x0000024335FA7000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads