bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a

General

Target

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Size

434KB
MD5

c9b4cd51c8e9d392b3f6bf5859d9ad8d
SHA1

28606adbcd325b4b05b304016ad7eea2024cf782
SHA256

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a
SHA512

b585878af2a83258663b9eb51390ea442f13fe083965fb01ea42be2c603adf85f552023bc0171c964310c03df4c192bb5bbaf4df69433ac512a4da719c3af6a7
SSDEEP

6144:MRAhhJxX7bNINTf4cC05nh+H0Vq1p6xxeN9CYqzWiQc/cMgWcsb95gf:UsAqMGHGqExeNG4cO/sbTgf

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

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.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

Processes:

spoolsv.exe

pid process

1428 spoolsv.exe

pid	process
1428	spoolsv.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

spoolsv.exebb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msiwv32.exe"	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msiwv32.exe"	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exespoolsv.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	spoolsv.exe

Drops file in System32 directory 6 IoCs

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

description	ioc	process
File created	C:\Windows\SysWOW64\vcl32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File created	C:\Windows\SysWOW64\msiwv32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File opened for modification	C:\Windows\SysWOW64\msiwv32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File created	C:\Windows\SysWOW64\concp32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

Drops file in Windows directory 2 IoCs

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

description	ioc	process
File created	C:\Windows\spoolsv.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
File opened for modification	C:\Windows\spoolsv.exe	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

Modifies registry class 12 IoCs

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exespoolsv.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 731562bb10c5d3a54061dfd275f92937	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	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\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}	spoolsv.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	spoolsv.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{885D3D7D-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\" %*"	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

pid process

1752 bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

pid	process
1752	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe

description	pid	process	target process
PID 1752 wrote to memory of 1428	1752	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe	spoolsv.exe
PID 1752 wrote to memory of 1428	1752	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe	spoolsv.exe
PID 1752 wrote to memory of 1428	1752	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe	spoolsv.exe
PID 1752 wrote to memory of 1428	1752	bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe	spoolsv.exe

C:\Users\Admin\AppData\Local\Temp\bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.exe
"C:\Users\Admin\AppData\Local\Temp\bb612a0d83c4777ce1d6aa290d7d2a861be3146f7aac075a1238018b5c21092a.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:1752

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:1428

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
435KB

MD5
2e6e42476941f2a3a7fe396b87e6ce6b

SHA1
0eadf598880b1d39ba6fa98a08fda93226c3bbf7

SHA256
aba201d3881977c37c72505d200c94fb96619511dd36f6ae3f81d5c32458b175

SHA512
8f110a5025f86382e04c6ccc92e8b9ef45490f14691460e2d94703ad8cff50af8cb3bda3dca50ef58fa6684352c1d4f17da0addd056bb942ea8066e6fa7b2b44

Download Submit
memory/1428-55-0x0000000000000000-mapping.dmp

Download
memory/1428-58-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1428-59-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1752-54-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/1752-56-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads