426edb65615875c5f8fd31118142f0b3d2e29b360a7995d69d58803e61c1f81e

General

Target

_____.xls
Size

153KB
MD5

cb5a37aac155775daed9abcfd680f39c
SHA1

75cfc87fe3f6f517e684729a558358fd5d492599
SHA256

426edb65615875c5f8fd31118142f0b3d2e29b360a7995d69d58803e61c1f81e
SHA512

cd12773f8a606b0e04e7e02f4b8f1abab1c8efb13008ee6134771954c857f32df6dfd7f74b5a43d206eae40ceac4219e09910c22918a02f2a57e95f747d9b39f

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 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	3900	4092	certutil.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1052	4092	rundll32.exe	67

Blocklisted process makes network request 1 IoCs

flow	pid	Process
34	2680	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2680	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4020	2680	WerFault.exe	84

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
4092	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe
4020	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	4020	WerFault.exe
Token: SeBackupPrivilege	4020	WerFault.exe
Token: SeDebugPrivilege	4020	WerFault.exe

Suspicious use of SetWindowsHookEx 15 IoCs

pid	Process
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE
4092	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 3900	4092	EXCEL.EXE	79
PID 4092 wrote to memory of 3900	4092	EXCEL.EXE	79
PID 4092 wrote to memory of 1052	4092	EXCEL.EXE	83
PID 4092 wrote to memory of 1052	4092	EXCEL.EXE	83
PID 1052 wrote to memory of 2680	1052	rundll32.exe	84
PID 1052 wrote to memory of 2680	1052	rundll32.exe	84
PID 1052 wrote to memory of 2680	1052	rundll32.exe	84

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\_____.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Windows\System32\certutil.exe
  "C:\Windows\System32\certutil.exe" -decode C:\Users\Public\jahi1343.png C:\Users\Public\jahi1343.pn
  2⤵
  - Process spawned unexpected child process
  PID:3900
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Public\jahi1343.pn,DF j1
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Public\jahi1343.pn,DF j1
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:2680
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 900
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4020

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2680-185-0x0000000002E60000-0x0000000002FAA000-memory.dmp

Filesize
1.3MB

Download
memory/4092-117-0x00007FFFABD70000-0x00007FFFABD80000-memory.dmp

Filesize
64KB

Download
memory/4092-123-0x00007FFFCA250000-0x00007FFFCC145000-memory.dmp

Filesize
31.0MB

Download
memory/4092-121-0x00007FFFCC370000-0x00007FFFCD45E000-memory.dmp

Filesize
16.9MB

Download
memory/4092-122-0x00007FFFABD70000-0x00007FFFABD80000-memory.dmp

Filesize
64KB

Download
memory/4092-118-0x00007FFFABD70000-0x00007FFFABD80000-memory.dmp

Filesize
64KB

Download
memory/4092-114-0x00007FF739AC0000-0x00007FF73D076000-memory.dmp

Filesize
53.7MB

Download
memory/4092-116-0x00007FFFABD70000-0x00007FFFABD80000-memory.dmp

Filesize
64KB

Download
memory/4092-115-0x00007FFFABD70000-0x00007FFFABD80000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads