68ef8ffa46a0d0ea1a981ad7bcfbaf1c7ad2680ddfac2a2d4b0822a23aaf4247

General

Target

subscription_1618334083.xlsb
Size

182KB
MD5

9d8889711256df5fba21cac45ff2be6e
SHA1

72c600faaaf2168a46922b101589dff2c3579264
SHA256

68ef8ffa46a0d0ea1a981ad7bcfbaf1c7ad2680ddfac2a2d4b0822a23aaf4247
SHA512

7e1874bbae50d15de0b0dece24f0122ec473f1d3ea0f21ba47b25dd941fe2512800fef54047752f8f5808db586c75ef73e770d6b4b4c67aded4613979074cca7

Score

10^/10

Malware Config

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	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3056	4656	cmd.exe	EXCEL.EXE

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4308 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4344 4308 WerFault.exe rundll32.exe

pid	process
4308	rundll32.exe

pid	pid_target	process	target process
4344	4308	WerFault.exe	rundll32.exe

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4656 EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 4344 WerFault.exe
Token: SeBackupPrivilege 4344 WerFault.exe
Token: SeDebugPrivilege 4344 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	4344	WerFault.exe
Token: SeBackupPrivilege	4344	WerFault.exe
Token: SeDebugPrivilege	4344	WerFault.exe

Suspicious use of SetWindowsHookEx 20 IoCs

Processes:

EXCEL.EXE

pid	process
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXEcmd.exerundll32.exe

description	pid	process	target process
PID 4656 wrote to memory of 3056	4656	EXCEL.EXE	cmd.exe
PID 4656 wrote to memory of 3056	4656	EXCEL.EXE	cmd.exe
PID 3056 wrote to memory of 3848	3056	cmd.exe	certutil.exe
PID 3056 wrote to memory of 3848	3056	cmd.exe	certutil.exe
PID 3056 wrote to memory of 4304	3056	cmd.exe	rundll32.exe
PID 3056 wrote to memory of 4304	3056	cmd.exe	rundll32.exe
PID 4304 wrote to memory of 4308	4304	rundll32.exe	rundll32.exe
PID 4304 wrote to memory of 4308	4304	rundll32.exe	rundll32.exe
PID 4304 wrote to memory of 4308	4304	rundll32.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\subscription_1618334083.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4656

C:\Windows\SYSTEM32\cmd.exe
cmd.exe /c certutil -decode %PUBLIC%\31927.dpi %PUBLIC%\31927.pdo && rundll32 %PUBLIC%\31927.pdo,DF1
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3056

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Public\31927.dpi C:\Users\Public\31927.pdo
3⤵
PID:3848

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Public\31927.pdo,DF1
3⤵
- Suspicious use of WriteProcessMemory
PID:4304

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\31927.pdo,DF1
4⤵
- Loads dropped DLL
PID:4308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 812
5⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4344

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

C:\Users\Public\31927.dpi

MD5
466fa8ac78b38bf6ae25c01b5fc532a2

SHA1
c3b2ba41743af5c3e2b57388e69a915f2f548394

SHA256
762dee7768d6787a8bd692746cc2c9a773bac0075b4cc960b116816c7b9b5b33

SHA512
ee62337f2cdedc4e32b6928879f94884672cf8e0d267e094694be04861aff90b53d7ade0134ba308008f477c820469888c682305ad75d408a941219f8e856674

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C:\Users\Public\31927.pdo

MD5
865a9d729e1c77c45295314c48f75756

SHA1
3b12aa209e04df1d6a0f23e5ce64b4ceb1fe56d7

SHA256
78732a575117a9f053a8a7dbeb0e4293265be4c901fa3cc124d31d6fc369939e

SHA512
a2bbf49e8afccef53ce3eb0e3701b2771abd5002ec762ecf6d60bf8e0c98749bd21cefe2307602be0f3b7f8ddfb3d5c691b0c1fc9e02c9337489f4e85e4ae683

Download Submit
\Users\Public\31927.pdo

MD5
865a9d729e1c77c45295314c48f75756

SHA1
3b12aa209e04df1d6a0f23e5ce64b4ceb1fe56d7

SHA256
78732a575117a9f053a8a7dbeb0e4293265be4c901fa3cc124d31d6fc369939e

SHA512
a2bbf49e8afccef53ce3eb0e3701b2771abd5002ec762ecf6d60bf8e0c98749bd21cefe2307602be0f3b7f8ddfb3d5c691b0c1fc9e02c9337489f4e85e4ae683

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memory/3056-179-0x0000000000000000-mapping.dmp

Download
memory/3848-180-0x0000000000000000-mapping.dmp

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memory/4304-182-0x0000000000000000-mapping.dmp

Download
memory/4308-184-0x0000000000000000-mapping.dmp

Download
memory/4308-186-0x0000000000E00000-0x0000000000EAE000-memory.dmp

Filesize
696KB

Download
memory/4656-118-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

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memory/4656-119-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

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memory/4656-122-0x00007FFA588C0000-0x00007FFA599AE000-memory.dmp

Filesize
16.9MB

Download
memory/4656-123-0x000001CDAEEA0000-0x000001CDB0D95000-memory.dmp

Filesize
31.0MB

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memory/4656-114-0x00007FF79B800000-0x00007FF79EDB6000-memory.dmp

Filesize
53.7MB

Download
memory/4656-117-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-116-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-115-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads