nullmixer | 60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93

Analysis

max time kernel
140s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26/08/2024, 22:48

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General

Target
60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe
Size 1.5MB
Sample240826-2rls7a1dkp
SHA256 60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93
MD5 2579624b4433d4e5fddaa989c46b89d4
SHA1 fce2a5a4a930df71e23608f1468f010a9a27a0a1
SHA512 67506e89565a06a49ce6056bc7b53ec44691e09662de24fdd11a12a8dde747c46c5bbf8b866cc1099cefe5916804b738c9c9c7e648c436ad9861c73461037957
SSDEEP 24576:xcVkKSxXCeomdCFDWHp/7F82t+YSyfEPY/RQ5DsvLwcaBhdZIl9mTMPCwWznW5Nm:xcBiCpZgu2odcEwJ84vLRaBtIl9mTerA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nullmixer privateloader aspackv2 discovery dropper evasion loader trojan

Malware Config

Extracted

Family

nullmixer

http://wxkeww.xyz/

Signatures

Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	karotima_1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRawWriteNotification = "1"	karotima_1.exe

NullMixer
NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.
dropper nullmixer
PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000700000002344d-18.dat	aspack_v212_v242
behavioral2/files/0x0007000000023448-26.dat	aspack_v212_v242
behavioral2/files/0x000700000002344b-34.dat	aspack_v212_v242
behavioral2/files/0x0007000000023449-28.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe

Executes dropped EXE 3 IoCs

pid	Process
4936	setup_install.exe
2316	karotima_2.exe
3880	karotima_1.exe

Loads dropped DLL 9 IoCs

pid	Process
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
4936	setup_install.exe
2316	karotima_2.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
12	api.db-ip.com
14	api.db-ip.com
5	ipinfo.io
6	ipinfo.io

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2192	4936	WerFault.exe	87
1112	2316	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	karotima_1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	karotima_2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	setup_install.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	karotima_2.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	karotima_2.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	karotima_2.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	87
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	87
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	87
PID 4936 wrote to memory of 4476	4936	setup_install.exe	92
PID 4936 wrote to memory of 4476	4936	setup_install.exe	92
PID 4936 wrote to memory of 4476	4936	setup_install.exe	92
PID 4936 wrote to memory of 2976	4936	setup_install.exe	93
PID 4936 wrote to memory of 2976	4936	setup_install.exe	93
PID 4936 wrote to memory of 2976	4936	setup_install.exe	93
PID 4476 wrote to memory of 3880	4476	cmd.exe	95
PID 4476 wrote to memory of 3880	4476	cmd.exe	95
PID 4476 wrote to memory of 3880	4476	cmd.exe	95
PID 2976 wrote to memory of 2316	2976	cmd.exe	94
PID 2976 wrote to memory of 2316	2976	cmd.exe	94
PID 2976 wrote to memory of 2316	2976	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe
"C:\Users\Admin\AppData\Local\Temp\60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\7zS47606947\setup_install.exe
  "C:\Users\Admin\AppData\Local\Temp\7zS47606947\setup_install.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c karotima_1.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4476
  - - C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_1.exe
      karotima_1.exe
      4⤵
      Modifies Windows Defender Real-time Protection settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:3880
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c karotima_2.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2976
  - - C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_2.exe
      karotima_2.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Checks SCSI registry key(s)
      PID:2316
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 380
        5⤵
        Program crash
        
        PID:1112
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 500
    3⤵
    - Program crash
    PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4936 -ip 4936
1⤵
PID:2308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2316 -ip 2316
1⤵
PID:1084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

karotima_1.exe

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_1.exe
Size 1.0MB
SHA256 c9d5525b2f2b76087121039ee1c23ed35508e60f653479722ec64ea3a064878e
MD5 9108ad5775c76cccbb4eadf02de24f5d
SHA1 82996bc4f72b3234536d0b58630d5d26bcf904b0
SHA512 19021a28555bba1fe1bdcdc8845f1bcadebd256c7db02b9329d6b44ae01a123a00e162cc34a97ba51f088cafa6f54ab1de8f82f771ac54b94a3a796f84f73362
SSDEEP 24576:DKMirjCYKgXW9CfBOh0UFcrPfT6batCA:DKR8BmBUfFwnTUatCA
MD5 SHA1 SHA512 SSDEEP

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karotima_2.txt

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_2.txt
Size 189KB
SHA256 0222eb6132b627074df73fb2ae2584431c0012599681b00aa3eb0e63c99d7ee6
MD5 cfeef9fb1902eaa5ad2306d7b1c6a2ae
SHA1 55951c93482438fc0acda4b069088abdff9e0871
SHA512 37381e29878487fbf718d1d0133b020a496fd45b901ece39e45bcb52e4b1444ee9128087d98925407c445ec8d10b45bf3bde96ad863a58b48b8eb05e7186c65a
SSDEEP 3072:LwBNp5VK5iOc0+/WTL5Py/0644P5DLJDwXWMmVlRswbL:M1i7W0L5U0644LyXCVlD
MD5 SHA1 SHA512 SSDEEP

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libcurl.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurl.dll
Size 218KB
SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
MD5 d09be1f47fd6b827c81a4812b4f7296f
SHA1 028ae3596c0790e6d7f9f2f3c8e9591527d267f7
SHA512 857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595
SSDEEP 6144:Kk3jgivfCVSRrLV7yAVzKZIjCbanUKWw+ba//PXHUo:30iH0iVPVzKOOunLWf2//0
MD5 SHA1 SHA512 SSDEEP

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libcurlpp.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurlpp.dll
Size 54KB
SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
MD5 e6e578373c2e416289a8da55f1dc5e8e
SHA1 b601a229b66ec3d19c2369b36216c6f6eb1c063e
SHA512 9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89
SSDEEP 768:W//WT2mbP+7x4Mx5KzVAn/QqvtdZs8LlR67diTNh4joK7qmQhyOl4UuGoxX9j3D:WHIK1R2VA/Qqvtzz67dbn1QhyOl4UuD
MD5 SHA1 SHA512 SSDEEP

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libgcc_s_dw2-1.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\libgcc_s_dw2-1.dll
Size 113KB
SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
MD5 9aec524b616618b0d3d00b27b6f51da1
SHA1 64264300801a353db324d11738ffed876550e1d3
SHA512 0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0
SSDEEP 3072:nti6N0WeF35Ro7hAWP6cagLSuf6LG3qSbKE4M:ti6N2F33wGJVuHuE
MD5 SHA1 SHA512 SSDEEP

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libstdc++-6.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\libstdc++-6.dll
Size 647KB
SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
MD5 5e279950775baae5fea04d2cc4526bcc
SHA1 8aef1e10031c3629512c43dd8b0b5d9060878453
SHA512 666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02
SSDEEP 12288:ZGRoW1chMjnv+gvJhb6bmpPSmCnh4o0v4Mc2jTrKoDSwq/3PmkfT4CmwcMcP1uE:uowcmBhKmlC4o0v4k1
MD5 SHA1 SHA512 SSDEEP

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libwinpthread-1.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\libwinpthread-1.dll
Size 69KB
SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
MD5 1e0d62c34ff2e649ebc5c372065732ee
SHA1 fcfaa36ba456159b26140a43e80fbd7e9d9af2de
SHA512 3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61
SSDEEP 1536:xPCESXKWzkxTz8uLfdkWr2sUX8YNKykl1wwwwUXrMZE4cYdz:x6baWwxH8EzSHYZE4cYdz
MD5 SHA1 SHA512 SSDEEP

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setup_install.exe

Path C:\Users\Admin\AppData\Local\Temp\7zS47606947\setup_install.exe
Size 287KB
SHA256 ec3e8a76df18ff7b5701c089ed5c1fd31dd3d34bd5d63080b6e3b1848c106e40
MD5 f7e01b4e78a35a05c96cfbfceb857c54
SHA1 fed788895a5d5823cb5253362858e0c201ea6c79
SHA512 c8276e0cc0320e35dcdca15992696ef9730b7a2fd2823a6a587d6b174715f269e87fae8fe9aa9102026817059f0c5ed89c74264c8ad9da2c11a11b78221352fd
SSDEEP 6144:x3psOxf7DA1s3MKzHN+5qhyX+dXSc6038g+ALFu877Ll:x3FxzDpcKzkKg82038g3FuE7
MD5 SHA1 SHA512 SSDEEP

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CC4F.tmp

Path C:\Users\Admin\AppData\Local\Temp\CC4F.tmp
Size 1.6MB
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
SSDEEP 24576:qhYK3o0FvOh/e8AuDq8TJqbEPVVdqi90gvuPGO12HoIGTufqN8:2XFvO5egq8TMbEL59JCKSN
MD5 SHA1 SHA512 SSDEEP

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memory/2316-78-0x0000000000400000-0x0000000002B74000-memory.dmp

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memory/4936-54-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-47-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-52-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-56-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-39-0x0000000000720000-0x00000000007AF000-memory.dmp

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memory/4936-40-0x000000006494A000-0x000000006494F000-memory.dmp

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memory/4936-55-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-57-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-41-0x0000000064940000-0x0000000064959000-memory.dmp

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memory/4936-53-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-51-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/4936-50-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/4936-49-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-48-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-46-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-44-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/4936-43-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/4936-45-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/4936-42-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-35-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/4936-73-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/4936-72-0x0000000064940000-0x0000000064959000-memory.dmp

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memory/4936-71-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/4936-70-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/4936-69-0x0000000000400000-0x000000000051E000-memory.dmp

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memory/4936-68-0x000000006EB40000-0x000000006EB63000-memory.dmp

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memory/4936-33-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/4936-22-0x0000000000400000-0x000000000051E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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