5234a5d4fe8354b482eb10292122e020f3d05aca6791ee7e5c69749f317afaca

General

Target

903cc27a42d5ba92290db296e7b09dd0N.exe
Size

966KB
MD5

903cc27a42d5ba92290db296e7b09dd0
SHA1

f5541b54aa8e308b237eea23fd6345f3fd85dc5c
SHA256

5234a5d4fe8354b482eb10292122e020f3d05aca6791ee7e5c69749f317afaca
SHA512

c50dcada865fa8651c10e218e1b29a2b6100f454ba627b67accb719e25f5d81394ccd3d2279264302c6d5c322a7c8d14a0dde3b6c41ba33b51bc1b25ff3bf1a6
SSDEEP

24576:v6Zv2ivhBVnFys7xP86Lh7uhmh8VZ7i/+XAmvYSFdbRPIbgRrhB:vE2ivhQs7dLNuhmuVZ7iHmv5FJRIqv

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msunj32.exe"	903cc27a42d5ba92290db296e7b09dd0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msunj32.exe"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	svchost.exe

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	903cc27a42d5ba92290db296e7b09dd0N.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/files/0x0008000000016d32-5.dat	upx
behavioral1/files/0x0033000000016cc3-12.dat	upx
behavioral1/memory/1824-14-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/2828-15-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\concp32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File created	C:\Windows\SysWOW64\msunj32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File opened for modification	C:\Windows\SysWOW64\msunj32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File created	C:\Windows\SysWOW64\concp32.exe	903cc27a42d5ba92290db296e7b09dd0N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	903cc27a42d5ba92290db296e7b09dd0N.exe
File opened for modification	C:\Windows\svchost.exe	903cc27a42d5ba92290db296e7b09dd0N.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	903cc27a42d5ba92290db296e7b09dd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\ax = b7d3b6c620c002b6fcb6c7b05e642a47	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	903cc27a42d5ba92290db296e7b09dd0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	903cc27a42d5ba92290db296e7b09dd0N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6CBC4145-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1824	903cc27a42d5ba92290db296e7b09dd0N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2828	1824	903cc27a42d5ba92290db296e7b09dd0N.exe	30
PID 1824 wrote to memory of 2828	1824	903cc27a42d5ba92290db296e7b09dd0N.exe	30
PID 1824 wrote to memory of 2828	1824	903cc27a42d5ba92290db296e7b09dd0N.exe	30
PID 1824 wrote to memory of 2828	1824	903cc27a42d5ba92290db296e7b09dd0N.exe	30

C:\Users\Admin\AppData\Local\Temp\903cc27a42d5ba92290db296e7b09dd0N.exe
"C:\Users\Admin\AppData\Local\Temp\903cc27a42d5ba92290db296e7b09dd0N.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\svchost.exe
  C:\Windows\svchost.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
971KB

MD5
d58a64b07681ce08becc30f0f91eaa8b

SHA1
7748fea64b961f7378212179bfe49b90ea6be2e9

SHA256
609569335731094889f710908e4fcd2b5e59f3e97a22bc7f9dd2cfa92dd84337

SHA512
5ecda75cdeed9bf3483a722e9b0e67bf76a3782a2e28b29239b29b69ea3771682121243ddbe238ffd8facc6356bb798b94fc1a50dc5474aa943d8dc092b67e6d

Download Submit
C:\Windows\svchost.exe

Filesize
966KB

MD5
e5b51ad67fe212a3bd0a09039841852f

SHA1
18ae4c68c9ed772bf888efad15065a588257227c

SHA256
541f6f4616e6a224a9fa4de7c1f61225c4c5b21ee8343f6cff949982fdcdb7c9

SHA512
eaa71c325b7262dd3c379c6817e75a23394ecc23524bed2209c521f2e3b3a183cc3c94675b3eb35e0bed160ff9eeed6d3a6f9839d6958ae2a2b9d49cc2b95466

Download Submit
memory/1824-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1824-14-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2828-15-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads