4f423d4ab78a5201862d4a04c294f33bd6e01df2bf8d1c38053e3e099723496d

General

Target

instrument indenture,12.11.2020.doc
Size

83KB
MD5

25f8d256895690c4cd673f36f3782a45
SHA1

7be15c189e2fb7552c832a81fcf5dd67c4b5bf7d
SHA256

4f423d4ab78a5201862d4a04c294f33bd6e01df2bf8d1c38053e3e099723496d
SHA512

1be3cb372e347ae0a03a03fac858a2417e9d15fdddd7fa48d1c1e60e56ea2f12560b0e9374e39a25807d0892ef7057dccfda5406a01f89b767983cd843d61d51

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	1264	3576	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 8 IoCs

Processes:

rundll32.exe

flow	pid	process
30	2732	rundll32.exe
32	2732	rundll32.exe
34	2732	rundll32.exe
36	2732	rundll32.exe
38	2732	rundll32.exe
40	2732	rundll32.exe
45	2732	rundll32.exe
46	2732	rundll32.exe

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2732 rundll32.exe

pid	process
2732	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

Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 14 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3576 WINWORD.EXE
3576 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2732 rundll32.exe
2732 rundll32.exe

description	flow	ioc
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
2732	rundll32.exe
2732	rundll32.exe

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE
3576	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXErundll32.exe

description	pid	process	target process
PID 3576 wrote to memory of 1264	3576	WINWORD.EXE	rundll32.exe
PID 3576 wrote to memory of 1264	3576	WINWORD.EXE	rundll32.exe
PID 1264 wrote to memory of 2732	1264	rundll32.exe	rundll32.exe
PID 1264 wrote to memory of 2732	1264	rundll32.exe	rundll32.exe
PID 1264 wrote to memory of 2732	1264	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\instrument indenture,12.11.2020.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:3576

C:\Windows\SYSTEM32\rundll32.exe
rundll32 c:\programdata\iwqOx.pdf,ShowDialogA -r
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1264

C:\Windows\SysWOW64\rundll32.exe
rundll32 c:\programdata\iwqOx.pdf,ShowDialogA -r
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:2732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\??\c:\programdata\iwqOx.pdf
MD5
8f346905de2448acdaa852abe048edf4

SHA1
ec05425496016bc337b671ec682c2780fdd8f8d8

SHA256
8a18bfcc126278cc95b6859c1557018d3c979be08c460a8099b33a847713d414

SHA512
9ed34388b3223a38157b1a789279b25f8e11a17f5e45373f42268de7018285c6ca15ed798d11ab0b06d0924191462b2b3e4edfdcb3d824a4d41104dfc422f390

Download Submit
\ProgramData\iwqOx.pdf
MD5
8f346905de2448acdaa852abe048edf4

SHA1
ec05425496016bc337b671ec682c2780fdd8f8d8

SHA256
8a18bfcc126278cc95b6859c1557018d3c979be08c460a8099b33a847713d414

SHA512
9ed34388b3223a38157b1a789279b25f8e11a17f5e45373f42268de7018285c6ca15ed798d11ab0b06d0924191462b2b3e4edfdcb3d824a4d41104dfc422f390

Download Submit
memory/1264-8-0x0000000000000000-mapping.dmp

Download
memory/2732-10-0x0000000000000000-mapping.dmp

Download
memory/3576-2-0x00000147C09F0000-0x00000147C1027000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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