5aca2d346f99ae5e51d1a1c6055216c543ec739a837d0344c1f5395a0c6ca2be

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20/08/2024, 14:33

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General

Target

93169837722e0c193629eaf6641bbed0N.exe
Size

43KB
MD5

93169837722e0c193629eaf6641bbed0
SHA1

824f5615d21f977817a1c9ee71194c9858bf215e
SHA256

5aca2d346f99ae5e51d1a1c6055216c543ec739a837d0344c1f5395a0c6ca2be
SHA512

4bffa5fb2a9ac719a8c6c122024fe1c1265970c93c95b9b9ad9a5532202e3ef42be1e69b79c9834d66ff6d9fb235d9aed368df2cf452e78b1ece9611868e2252
SSDEEP

768:pB3Yvnl5pzqsgKnXpkoHS6KZIFhf8HuKWJI3HG+VVVYMvsI:zIvl5dKYXGB2IuPJI3kI

Score

10^/10

discovery evasion persistence upx

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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2700	explorer.exe
2816	spoolsv.exe
2616	svchost.exe
2856	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
2700	explorer.exe
2700	explorer.exe
2816	spoolsv.exe
2816	spoolsv.exe
2616	svchost.exe
2616	svchost.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1476-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/files/0x0009000000018b2b-6.dat	upx
behavioral1/files/0x0008000000018bec-21.dat	upx
behavioral1/files/0x0007000000019221-33.dat	upx
behavioral1/memory/2616-40-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1476-47-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2856-54-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2816-56-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/1476-58-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2700-59-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2616-60-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral1/memory/2700-71-0x0000000000400000-0x0000000000422000-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\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\themes\explorer.exe	93169837722e0c193629eaf6641bbed0N.exe
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

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	93169837722e0c193629eaf6641bbed0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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
3028	schtasks.exe
948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2616	svchost.exe
2700	explorer.exe
2700	explorer.exe
2700	explorer.exe
2616	svchost.exe
2616	svchost.exe
2700	explorer.exe
2700	explorer.exe
2616	svchost.exe
2700	explorer.exe
2616	svchost.exe
2700	explorer.exe
2616	svchost.exe
2700	explorer.exe
2616	svchost.exe
2700	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2700	explorer.exe
2616	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1476	93169837722e0c193629eaf6641bbed0N.exe
1476	93169837722e0c193629eaf6641bbed0N.exe
2700	explorer.exe
2700	explorer.exe
2816	spoolsv.exe
2816	spoolsv.exe
2616	svchost.exe
2616	svchost.exe
2856	spoolsv.exe
2856	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 2700	1476	93169837722e0c193629eaf6641bbed0N.exe	30
PID 1476 wrote to memory of 2700	1476	93169837722e0c193629eaf6641bbed0N.exe	30
PID 1476 wrote to memory of 2700	1476	93169837722e0c193629eaf6641bbed0N.exe	30
PID 1476 wrote to memory of 2700	1476	93169837722e0c193629eaf6641bbed0N.exe	30
PID 2700 wrote to memory of 2816	2700	explorer.exe	31
PID 2700 wrote to memory of 2816	2700	explorer.exe	31
PID 2700 wrote to memory of 2816	2700	explorer.exe	31
PID 2700 wrote to memory of 2816	2700	explorer.exe	31
PID 2816 wrote to memory of 2616	2816	spoolsv.exe	32
PID 2816 wrote to memory of 2616	2816	spoolsv.exe	32
PID 2816 wrote to memory of 2616	2816	spoolsv.exe	32
PID 2816 wrote to memory of 2616	2816	spoolsv.exe	32
PID 2616 wrote to memory of 2856	2616	svchost.exe	33
PID 2616 wrote to memory of 2856	2616	svchost.exe	33
PID 2616 wrote to memory of 2856	2616	svchost.exe	33
PID 2616 wrote to memory of 2856	2616	svchost.exe	33
PID 2700 wrote to memory of 1796	2700	explorer.exe	34
PID 2700 wrote to memory of 1796	2700	explorer.exe	34
PID 2700 wrote to memory of 1796	2700	explorer.exe	34
PID 2700 wrote to memory of 1796	2700	explorer.exe	34
PID 2616 wrote to memory of 3028	2616	svchost.exe	35
PID 2616 wrote to memory of 3028	2616	svchost.exe	35
PID 2616 wrote to memory of 3028	2616	svchost.exe	35
PID 2616 wrote to memory of 3028	2616	svchost.exe	35
PID 2616 wrote to memory of 948	2616	svchost.exe	38
PID 2616 wrote to memory of 948	2616	svchost.exe	38
PID 2616 wrote to memory of 948	2616	svchost.exe	38
PID 2616 wrote to memory of 948	2616	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\93169837722e0c193629eaf6641bbed0N.exe
"C:\Users\Admin\AppData\Local\Temp\93169837722e0c193629eaf6641bbed0N.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:1476
- \??\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:2700
- - \??\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:2816
  - - \??\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:2616
    - - \??\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:2856
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 14:35 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:3028
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 14:36 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:948
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:1796

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

\Windows\Resources\Themes\explorer.exe

Filesize
43KB

MD5
9f7bca50bd34eb07c92cd774561d2ac4

SHA1
bc9319636516fc340469c69ca303ddea5e69e5e8

SHA256
488623aa57599a4526ba0bcaa477678ea9d4e81486104fa437e5ee8454aa47f0

SHA512
ffdec87a4be3ee9b0d5ffbea3ee2ff5710d9e68e76690dc4de2734cd3c3d976f424632ae344f521cf8b721bd3ab5734ce0fc869dc5426c9e11fcb818651dd0b7

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
43KB

MD5
e0c3ddf22f4c5a1d8ed2b047c06df44e

SHA1
cd10fa4c2c440fb3fefa0df3752c1d7c887340f6

SHA256
330f75958f87096c690f50ff54880dbc5e5e2299aafb83ad5e1980ad8163ab85

SHA512
03a217f91466fb575b8d60713ff04cbdc65eb8fb5ef8fd7f0865290827af231891871fda62533ca33100793f93139cff97f20971cf0be4133173685c13537521

Download Submit
\Windows\Resources\svchost.exe

Filesize
43KB

MD5
57be43a64c6098f5018706c88328d7a7

SHA1
6e77a9f2fa00d5e4101e9a248edbdf47878834f8

SHA256
3d2ed97b851f4c788479db9a22ca84a1c48d0df5645d0390bfe4eeddc43cc90c

SHA512
d01621fafa3d4b69b8438c2b43453333c5db48e0585d1406b89d1d52eab133bafa1ca677df7cff029fe41cf506b2c8506c66ed1bc7e21df9e8345d3459eb0a8d

Download Submit
memory/1476-58-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1476-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1476-47-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2616-40-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2616-48-0x00000000002A0000-0x00000000002C2000-memory.dmp

Filesize
136KB

Download
memory/2616-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2700-25-0x0000000000430000-0x0000000000452000-memory.dmp

Filesize
136KB

Download
memory/2700-59-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2700-71-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2816-56-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2856-54-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download