f93464bca9354f9e9a6bdf39641ceeadb19ca79f62d1537acf17840d775ae3b6

Analysis

max time kernel
126s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 06:12

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General

Target

2b5210cdd94d2e35817ca49e9f5c7f91.exe
Size

154KB
MD5

2b5210cdd94d2e35817ca49e9f5c7f91
SHA1

2c9826bed9a93d34d89777e1e823c4083ede7ba4
SHA256

f93464bca9354f9e9a6bdf39641ceeadb19ca79f62d1537acf17840d775ae3b6
SHA512

b75184bfd0760213c4347fdaf629fdb159efdc29c950f475de8f0b128a53ff396f9c1a7d1249d8408cd442884a876c7ae9ff9d96b219a2cd0d62721da0b29cb9
SSDEEP

1536:t1NAUwtT6sFstwrbU3rnouy8prve6Ot7ytw52e1BVRDhY0z6UcnfeskzhAXyS1Po:fgtTPFsw0jout9ve6Ot7ytMr6jzwSF

Score

8^/10

persistence upx

Malware Config

Signatures

Registers new Print Monitor 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Local Port	spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Microsoft Shared Fax Monitor	spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Standard TCP/IP Port	spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Standard TCP/IP Port\Ports	spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port	spoolsv.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1300-0-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/1300-9-0x0000000000400000-0x0000000000452000-memory.dmp	upx

Modifies data under HKEY_USERS 14 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Fax = "winspool,Ne01:,15,45"	spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\Devices	spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\Devices	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft XPS Document Writer = "winspool,Ne00:,15,45"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\Devices\Fax = "winspool,Ne01:"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\Devices\Fax = "winspool,Ne01:"	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\Devices	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft XPS Document Writer = "winspool,Ne00:,15,45"	spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Fax = "winspool,Ne01:,15,45"	spoolsv.exe

Runs net.exe

Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery

T1018

pid	Process
2804	PING.EXE
2880	PING.EXE

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe
Token: SeRestorePrivilege	2724	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 2368	1300	2b5210cdd94d2e35817ca49e9f5c7f91.exe	17
PID 1300 wrote to memory of 2368	1300	2b5210cdd94d2e35817ca49e9f5c7f91.exe	17
PID 1300 wrote to memory of 2368	1300	2b5210cdd94d2e35817ca49e9f5c7f91.exe	17
PID 1300 wrote to memory of 2368	1300	2b5210cdd94d2e35817ca49e9f5c7f91.exe	17
PID 2368 wrote to memory of 2476	2368	cmd.exe	16
PID 2368 wrote to memory of 2476	2368	cmd.exe	16
PID 2368 wrote to memory of 2476	2368	cmd.exe	16
PID 2368 wrote to memory of 2476	2368	cmd.exe	16
PID 2476 wrote to memory of 2820	2476	net.exe	14
PID 2476 wrote to memory of 2820	2476	net.exe	14
PID 2476 wrote to memory of 2820	2476	net.exe	14
PID 2476 wrote to memory of 2820	2476	net.exe	14
PID 2368 wrote to memory of 2804	2368	cmd.exe	33
PID 2368 wrote to memory of 2804	2368	cmd.exe	33
PID 2368 wrote to memory of 2804	2368	cmd.exe	33
PID 2368 wrote to memory of 2804	2368	cmd.exe	33
PID 2368 wrote to memory of 2796	2368	cmd.exe	36
PID 2368 wrote to memory of 2796	2368	cmd.exe	36
PID 2368 wrote to memory of 2796	2368	cmd.exe	36
PID 2368 wrote to memory of 2796	2368	cmd.exe	36
PID 2796 wrote to memory of 2756	2796	net.exe	34
PID 2796 wrote to memory of 2756	2796	net.exe	34
PID 2796 wrote to memory of 2756	2796	net.exe	34
PID 2796 wrote to memory of 2756	2796	net.exe	34
PID 2368 wrote to memory of 2880	2368	cmd.exe	37
PID 2368 wrote to memory of 2880	2368	cmd.exe	37
PID 2368 wrote to memory of 2880	2368	cmd.exe	37
PID 2368 wrote to memory of 2880	2368	cmd.exe	37

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop Spooler
1⤵
PID:2820

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2384

C:\Windows\SysWOW64\net.exe
net stop Spooler
1⤵
- Suspicious use of WriteProcessMemory
PID:2476

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\E62.tmp\ClearPrinterQueue.bat""
1⤵
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\PING.EXE
  ping localhost -n 4
  2⤵
  - Runs ping.exe
  PID:2804
- C:\Windows\SysWOW64\net.exe
  net start Spooler
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- C:\Windows\SysWOW64\PING.EXE
  ping localhost -n 4
  2⤵
  - Runs ping.exe
  PID:2880

C:\Users\Admin\AppData\Local\Temp\2b5210cdd94d2e35817ca49e9f5c7f91.exe
"C:\Users\Admin\AppData\Local\Temp\2b5210cdd94d2e35817ca49e9f5c7f91.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1300

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start Spooler
1⤵
PID:2756

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
1⤵
- Registers new Print Monitor
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\E62.tmp\ClearPrinterQueue.bat

Filesize
240B

MD5
13b4eb893beae6a88874f662f10c750e

SHA1
d9dad08ae3ae1e5f47d53d4d0fe6b3b9d142dd79

SHA256
7821b5298cce7f46cfa93f15d6c68a2a9aa0c767b552c39cc6d60712ac1c9fc5

SHA512
462e2b5661b3442492eecf44fac2a9b474774e2709d21c571946447bcbbbee9fb11e86dce9f64b3d9be1e5a210a4e9ecf8ebf8ee5887cf16a1751715d2a4464c

Download Submit
memory/1300-0-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1300-9-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads