936762ac61ecd3ed975e97c2f8f328f62ecbc4ee2ef79c82943226a911751cc1

General

Target
ComplianceRep-840559179-Apr-18.xlsb
Size 1.4MB
Sample220419-cvpltabea3
SHA256 e9e549ab59dd8e852100b707713688b1e62681782717f784a70b4ff9e39c1298
MD5 40e8b2405a3fc3f2c3131c57e513ef45
SHA1 9409f49d82842c21a404315220d861d0eaccb413
SHA512 5c64ebad92ed4468ed0720ad20921ff4ef568550c82efebc644d7178e2fdbe3d9a0f5e70eb2171d74320be620c974c056355c65e1cb99a778d96958212ec05c3
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://146.70.87.163/44666,6175321759.dat
xlm40.dropper
http://5.254.118.198/44666,6175321759.dat
xlm40.dropper
http://91.194.11.15/44666,6175321759.dat

Signatures

Process spawned unexpected child process 4 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	4420	2428	Regsvr32.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1980	2428	Regsvr32.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1004	2428	Regsvr32.exe	78
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1480	2428	Regsvr32.exe	78

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
2428	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE
2428	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 4420	2428	EXCEL.EXE	80
PID 2428 wrote to memory of 4420	2428	EXCEL.EXE	80
PID 2428 wrote to memory of 1980	2428	EXCEL.EXE	81
PID 2428 wrote to memory of 1980	2428	EXCEL.EXE	81
PID 2428 wrote to memory of 1004	2428	EXCEL.EXE	82
PID 2428 wrote to memory of 1004	2428	EXCEL.EXE	82
PID 2428 wrote to memory of 1480	2428	EXCEL.EXE	83
PID 2428 wrote to memory of 1480	2428	EXCEL.EXE	83

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ComplianceRep-840559179-Apr-18.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 /s calc
  2⤵
  - Process spawned unexpected child process
  PID:4420
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\ProgramData\Dis.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1980
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\ProgramData\Disa.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1004
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\ProgramData\Disb.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1480

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

memory/2428-130-0x00007FF878B50000-0x00007FF878B60000-memory.dmp

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memory/2428-131-0x00007FF878B50000-0x00007FF878B60000-memory.dmp

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memory/2428-132-0x00007FF878B50000-0x00007FF878B60000-memory.dmp

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memory/2428-134-0x00007FF878B50000-0x00007FF878B60000-memory.dmp

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memory/2428-133-0x00007FF878B50000-0x00007FF878B60000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads