4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf

General

Target

4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Size

278KB
MD5

a095f3f4205ee56558d932d7fbae4b60
SHA1

fc3c79da182ec3b2ad3cfe379cd006967d01d9b6
SHA256

4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf
SHA512

7026f0c1753c6328414fd59d0ed7e27bd98768c0bc942bf5bc05d46f680e78b044641452d5da1abc167b74d1407921c9b5ff4ba91562378d442f604552ef15d6
SSDEEP

6144:MRAhhJxX7bNIAROzTbdaXninnUy8Z2pBxwT6ELuGeQwYxuFjdnD:UsAAMABGnfESGeQZuxdnD

Score

10^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	spoolsv.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mswit32.exe"	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mswit32.exe"	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File created	C:\Windows\SysWOW64\mswit32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File opened for modification	C:\Windows\SysWOW64\mswit32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File created	C:\Windows\SysWOW64\concp32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File created	C:\Windows\SysWOW64\vcl32.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\spoolsv.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
File opened for modification	C:\Windows\spoolsv.exe	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\ax = ff13c981829dc9d5746183c6ec2ca1d9	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C113F18A-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1368	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1596	1368	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe	27
PID 1368 wrote to memory of 1596	1368	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe	27
PID 1368 wrote to memory of 1596	1368	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe	27
PID 1368 wrote to memory of 1596	1368	4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe	27

C:\Users\Admin\AppData\Local\Temp\4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe
"C:\Users\Admin\AppData\Local\Temp\4a5857a1e29a005dc8a24711ea44e33f008eb07dded0332d0a67d68f55f179bf.exe"
1⤵
- Modifies system executable filetype association
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\spoolsv.exe
  C:\Windows\spoolsv.exe
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Modifies Installed Components in the registry
  - Adds Run key to start application
  - Modifies registry class
  PID:1596

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\spoolsv.exe

Filesize
279KB

MD5
309b839f1fab0575acc6c66e64143702

SHA1
b648ae7973d59e3090442410ab6ba90f0a573a2b

SHA256
76fd58f358863edfbdc92a4515192e873966a38641de64c550b52249caafd52d

SHA512
7c919410b2edee431c00c2a6f434baf55da6018af6a5eedbc84ae989534154d09cf9543e837c4191c34b6c638f6464c9b0bb455fbd0367fd4a27e63b440951a1

Download Submit
memory/1368-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1368-57-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1596-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1596-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads