42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607b

Analysis

max time kernel
120s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/11/2024, 00:54

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General

Target

42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
Size

135KB
MD5

d0a26b7e6362a2fcab740f2b2f1f9fc0
SHA1

65079204050f5bb5721853c9e3ce7b63754d4fbc
SHA256

42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607b
SHA512

25f7424ec363abdd0c571cd0a39b9389dd0f94fc7d715f71225fa40bdeac85908c08ccac40af2d11d93609e233f4aac120b7091d2c795afad2b041fc6de91d20
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVVgJ:UVqoCl/YgjxEufVU0TbTyDDalkJ

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2288	explorer.exe
3004	spoolsv.exe
3056	svchost.exe
2780	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2288	explorer.exe
3004	spoolsv.exe
3056	svchost.exe

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\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2892	schtasks.exe
1888	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
2288	explorer.exe
2288	explorer.exe
2288	explorer.exe
3056	svchost.exe
3056	svchost.exe
2288	explorer.exe
3056	svchost.exe
2288	explorer.exe
3056	svchost.exe
2288	explorer.exe
3056	svchost.exe
2288	explorer.exe
3056	svchost.exe
2288	explorer.exe
3056	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2288	explorer.exe
3056	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
2288	explorer.exe
2288	explorer.exe
3004	spoolsv.exe
3004	spoolsv.exe
3056	svchost.exe
3056	svchost.exe
2780	spoolsv.exe
2780	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2288	2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe	30
PID 2496 wrote to memory of 2288	2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe	30
PID 2496 wrote to memory of 2288	2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe	30
PID 2496 wrote to memory of 2288	2496	42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe	30
PID 2288 wrote to memory of 3004	2288	explorer.exe	31
PID 2288 wrote to memory of 3004	2288	explorer.exe	31
PID 2288 wrote to memory of 3004	2288	explorer.exe	31
PID 2288 wrote to memory of 3004	2288	explorer.exe	31
PID 3004 wrote to memory of 3056	3004	spoolsv.exe	32
PID 3004 wrote to memory of 3056	3004	spoolsv.exe	32
PID 3004 wrote to memory of 3056	3004	spoolsv.exe	32
PID 3004 wrote to memory of 3056	3004	spoolsv.exe	32
PID 3056 wrote to memory of 2780	3056	svchost.exe	33
PID 3056 wrote to memory of 2780	3056	svchost.exe	33
PID 3056 wrote to memory of 2780	3056	svchost.exe	33
PID 3056 wrote to memory of 2780	3056	svchost.exe	33
PID 2288 wrote to memory of 2700	2288	explorer.exe	34
PID 2288 wrote to memory of 2700	2288	explorer.exe	34
PID 2288 wrote to memory of 2700	2288	explorer.exe	34
PID 2288 wrote to memory of 2700	2288	explorer.exe	34
PID 3056 wrote to memory of 2892	3056	svchost.exe	35
PID 3056 wrote to memory of 2892	3056	svchost.exe	35
PID 3056 wrote to memory of 2892	3056	svchost.exe	35
PID 3056 wrote to memory of 2892	3056	svchost.exe	35
PID 3056 wrote to memory of 1888	3056	svchost.exe	39
PID 3056 wrote to memory of 1888	3056	svchost.exe	39
PID 3056 wrote to memory of 1888	3056	svchost.exe	39
PID 3056 wrote to memory of 1888	3056	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe
"C:\Users\Admin\AppData\Local\Temp\42b6c18de4ce9efe34e6551c3f99860658f508dee031bd12031dba704922607bN.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2496
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2288
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3004
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3056
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2780
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:56 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2892
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:57 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1888
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
eb6fe109a65f7cf0fce1510c6baabe5d

SHA1
951923b225573fe52a9cd37f97ad88a07d3e41be

SHA256
a71fb1ec2f907987b9301d728009b7a7b0577a6f6db1ad9e5d16ae3b61147084

SHA512
44759cb9fd09316b441c735d1ece4d3f56b4efcce63970b03f1e2d37ecdf2b072bc61fdfff9035d3b48478f8805334e854034ee79b83b98c89ce8e67bada5fb8

Download Submit
\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
93bcfd2b2b22fa27923f1bfc43bd8544

SHA1
ea98e9e295cb672a3c5dedd949ab858662e6dbdf

SHA256
1e62e0e37f96023db49018641d775b450136e282b5dcf300d5a03d2e371bb35a

SHA512
6f8c08944632c3e62fb479a909ff9c61c55888007226767b00da1f0dee26fae432dda50cda1cf1f0f9fa687f2b0986ef992afa1af136fb2afb951cb45e5b59d0

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
3d97f7fcab6e0659a51364461e3d5a31

SHA1
cfa17d90ccffc0f768932ede13446677aac8daee

SHA256
6cc060c59694e66df7b6e1af855ea3060cb36fd0754f0ed0186730048f6c4988

SHA512
36ef3eb9ac57c4853f30911cc43d3714bfdfe4181882e50061f0589ea1f15ea027e8fe04819cb8c749bdf7ae588ae1cd1fe7f4de8f188606118c608ce46996d0

Download Submit
memory/2288-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2288-45-0x00000000003C0000-0x00000000003DF000-memory.dmp

Filesize
124KB

Download
memory/2496-8-0x00000000002B0000-0x00000000002CF000-memory.dmp

Filesize
124KB

Download
memory/2496-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2496-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2780-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3004-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3056-36-0x00000000005B0000-0x00000000005CF000-memory.dmp

Filesize
124KB

Download
memory/3056-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3056-47-0x00000000005B0000-0x00000000005CF000-memory.dmp

Filesize
124KB

Download