a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
09/07/2024, 03:19

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General

Target

a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
Size

135KB
MD5

a796ef28a106994c1a1c3a7863be7104
SHA1

6da415bb8f1946a97cc5c0622673f320d5d39404
SHA256

a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2
SHA512

bb6ef2107f18847b2f7092499bb1d47ddc0fef3b886069d24bf735e58a43c64825855cb1582fbb99124f7802a5267aeb620e46374d00fa7390c48a89fde5bcab
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVuWLY:UVqoCl/YgjxEufVU0TbTyDDalAWLY

Score

10^/10

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-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
1500	explorer.exe
2088	spoolsv.exe
2196	svchost.exe
2964	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1500	explorer.exe
2088	spoolsv.exe
2196	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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe

Drops file in System32 directory 2 IoCs

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

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1228	schtasks.exe
2696	schtasks.exe
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
2196	svchost.exe
2196	svchost.exe
2196	svchost.exe
1500	explorer.exe
1500	explorer.exe
1500	explorer.exe
2196	svchost.exe
1500	explorer.exe
2196	svchost.exe
2196	svchost.exe
1500	explorer.exe
1500	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1500	explorer.exe
2196	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
1500	explorer.exe
1500	explorer.exe
2088	spoolsv.exe
2088	spoolsv.exe
2196	svchost.exe
2196	svchost.exe
2964	spoolsv.exe
2964	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 1500	1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe	31
PID 1904 wrote to memory of 1500	1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe	31
PID 1904 wrote to memory of 1500	1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe	31
PID 1904 wrote to memory of 1500	1904	a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe	31
PID 1500 wrote to memory of 2088	1500	explorer.exe	32
PID 1500 wrote to memory of 2088	1500	explorer.exe	32
PID 1500 wrote to memory of 2088	1500	explorer.exe	32
PID 1500 wrote to memory of 2088	1500	explorer.exe	32
PID 2088 wrote to memory of 2196	2088	spoolsv.exe	33
PID 2088 wrote to memory of 2196	2088	spoolsv.exe	33
PID 2088 wrote to memory of 2196	2088	spoolsv.exe	33
PID 2088 wrote to memory of 2196	2088	spoolsv.exe	33
PID 2196 wrote to memory of 2964	2196	svchost.exe	34
PID 2196 wrote to memory of 2964	2196	svchost.exe	34
PID 2196 wrote to memory of 2964	2196	svchost.exe	34
PID 2196 wrote to memory of 2964	2196	svchost.exe	34
PID 1500 wrote to memory of 1956	1500	explorer.exe	35
PID 1500 wrote to memory of 1956	1500	explorer.exe	35
PID 1500 wrote to memory of 1956	1500	explorer.exe	35
PID 1500 wrote to memory of 1956	1500	explorer.exe	35
PID 2196 wrote to memory of 2696	2196	svchost.exe	36
PID 2196 wrote to memory of 2696	2196	svchost.exe	36
PID 2196 wrote to memory of 2696	2196	svchost.exe	36
PID 2196 wrote to memory of 2696	2196	svchost.exe	36
PID 2196 wrote to memory of 1036	2196	svchost.exe	39
PID 2196 wrote to memory of 1036	2196	svchost.exe	39
PID 2196 wrote to memory of 1036	2196	svchost.exe	39
PID 2196 wrote to memory of 1036	2196	svchost.exe	39
PID 2196 wrote to memory of 1228	2196	svchost.exe	41
PID 2196 wrote to memory of 1228	2196	svchost.exe	41
PID 2196 wrote to memory of 1228	2196	svchost.exe	41
PID 2196 wrote to memory of 1228	2196	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe
"C:\Users\Admin\AppData\Local\Temp\a8a462ba69ab7a143e7605615855e0892637b4741ba3691836f5da500796fba2.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1904
- \??\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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1500
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2088
  - - \??\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
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2196
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2964
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:21 /f
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:2696
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:22 /f
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1036
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:23 /f
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1228
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:1956

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
d80523945116090865857a9a44e61463

SHA1
68eb2a4fd48861bc1251376843e4a81e4baf9ed3

SHA256
3fb12f92f61c285dcfa1e649e8603c8398be3667a7e4ca5af6d2ac4e85135705

SHA512
ba816fe28662668503cdf912073cc7dc4f229b24ae805ea236969a93132fd51235e8231190a300806afae4c6d60b541bc73abc624fe7a8cf9b13bb67aa023a98

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

Filesize
135KB

MD5
9327b7d149d5259d1e91b26c40e2a84f

SHA1
01c7f9484a10d23bedc7c444e78ddda05ce3bece

SHA256
13218c985ed6aa2b78d9f259361eb5464af691526401d9dd6eb5c5f5c937ab4a

SHA512
f19dc20fe10e179a1ebb6a4288b0f22759d2332434e966295b65c444a5b54575f6cbf63495769775af1db53050e3bb1c46fb8edfdff2a6e6d12c11add5844c8b

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
81c9bbeb56c8a5fa1913c4ccb7411a85

SHA1
39ceebaa959b443bcb5b83b37292146894805092

SHA256
e6047e38c357f915591bf51be62fe89634c323fd7598be9fd9995d850d0193ff

SHA512
e9699f11e703dae811c8234cc223dda57c69bda40bb1031ff196a318d6bc11acb294323460019c263131bdd55f012c9f9bf31135903820f8a70a898cfe542bce

Download Submit
memory/1904-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1904-8-0x00000000004C0000-0x00000000004DF000-memory.dmp

Filesize
124KB

Download
memory/1904-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2088-31-0x00000000003E0000-0x00000000003FF000-memory.dmp

Filesize
124KB

Download
memory/2088-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2964-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download