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
MD5

2579624b4433d4e5fddaa989c46b89d4
SHA1

fce2a5a4a930df71e23608f1468f010a9a27a0a1
SHA256

60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93
SHA512

67506e89565a06a49ce6056bc7b53ec44691e09662de24fdd11a12a8dde747c46c5bbf8b866cc1099cefe5916804b738c9c9c7e648c436ad9861c73461037957
SSDEEP

24576:xcVkKSxXCeomdCFDWHp/7F82t+YSyfEPY/RQ5DsvLwcaBhdZIl9mTMPCwWznW5Nm:xcBiCpZgu2odcEwJ84vLRaBtIl9mTerA

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

Processes:

karotima_1.exe

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\7zS47606947\setup_install.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurl.dll	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libstdc++-6.dll	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurlpp.dll	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

Processes:

60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe

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

Processes:

setup_install.exekarotima_2.exekarotima_1.exe

pid process

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

Loads dropped DLL 9 IoCs

Processes:

setup_install.exekarotima_2.exe

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.

Processes:

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2192 4936 WerFault.exe setup_install.exe
1112 2316 WerFault.exe karotima_2.exe

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

pid	pid_target	process	target process
2192	4936	WerFault.exe	setup_install.exe
1112	2316	WerFault.exe	karotima_2.exe

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

Processes:

cmd.execmd.exekarotima_1.exekarotima_2.exe60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exesetup_install.exe

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

Processes:

karotima_2.exe

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

Processes:

60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exesetup_install.execmd.execmd.exe

description	pid	process	target process
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	setup_install.exe
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	setup_install.exe
PID 1652 wrote to memory of 4936	1652	60f7542fc38ff540ec252c590d3e4695bbf314fa991352bde0239e64d8584b93.exe	setup_install.exe
PID 4936 wrote to memory of 4476	4936	setup_install.exe	cmd.exe
PID 4936 wrote to memory of 4476	4936	setup_install.exe	cmd.exe
PID 4936 wrote to memory of 4476	4936	setup_install.exe	cmd.exe
PID 4936 wrote to memory of 2976	4936	setup_install.exe	cmd.exe
PID 4936 wrote to memory of 2976	4936	setup_install.exe	cmd.exe
PID 4936 wrote to memory of 2976	4936	setup_install.exe	cmd.exe
PID 4476 wrote to memory of 3880	4476	cmd.exe	karotima_1.exe
PID 4476 wrote to memory of 3880	4476	cmd.exe	karotima_1.exe
PID 4476 wrote to memory of 3880	4476	cmd.exe	karotima_1.exe
PID 2976 wrote to memory of 2316	2976	cmd.exe	karotima_2.exe
PID 2976 wrote to memory of 2316	2976	cmd.exe	karotima_2.exe
PID 2976 wrote to memory of 2316	2976	cmd.exe	karotima_2.exe

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_1.exe

Filesize
1.0MB

MD5
9108ad5775c76cccbb4eadf02de24f5d

SHA1
82996bc4f72b3234536d0b58630d5d26bcf904b0

SHA256
c9d5525b2f2b76087121039ee1c23ed35508e60f653479722ec64ea3a064878e

SHA512
19021a28555bba1fe1bdcdc8845f1bcadebd256c7db02b9329d6b44ae01a123a00e162cc34a97ba51f088cafa6f54ab1de8f82f771ac54b94a3a796f84f73362

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\karotima_2.txt

Filesize
189KB

MD5
cfeef9fb1902eaa5ad2306d7b1c6a2ae

SHA1
55951c93482438fc0acda4b069088abdff9e0871

SHA256
0222eb6132b627074df73fb2ae2584431c0012599681b00aa3eb0e63c99d7ee6

SHA512
37381e29878487fbf718d1d0133b020a496fd45b901ece39e45bcb52e4b1444ee9128087d98925407c445ec8d10b45bf3bde96ad863a58b48b8eb05e7186c65a

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurl.dll

Filesize
218KB

MD5
d09be1f47fd6b827c81a4812b4f7296f

SHA1
028ae3596c0790e6d7f9f2f3c8e9591527d267f7

SHA256
0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

SHA512
857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libcurlpp.dll

Filesize
54KB

MD5
e6e578373c2e416289a8da55f1dc5e8e

SHA1
b601a229b66ec3d19c2369b36216c6f6eb1c063e

SHA256
43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

SHA512
9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libgcc_s_dw2-1.dll

Filesize
113KB

MD5
9aec524b616618b0d3d00b27b6f51da1

SHA1
64264300801a353db324d11738ffed876550e1d3

SHA256
59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

SHA512
0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libstdc++-6.dll

Filesize
647KB

MD5
5e279950775baae5fea04d2cc4526bcc

SHA1
8aef1e10031c3629512c43dd8b0b5d9060878453

SHA256
97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

SHA512
666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\libwinpthread-1.dll

Filesize
69KB

MD5
1e0d62c34ff2e649ebc5c372065732ee

SHA1
fcfaa36ba456159b26140a43e80fbd7e9d9af2de

SHA256
509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

SHA512
3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS47606947\setup_install.exe

Filesize
287KB

MD5
f7e01b4e78a35a05c96cfbfceb857c54

SHA1
fed788895a5d5823cb5253362858e0c201ea6c79

SHA256
ec3e8a76df18ff7b5701c089ed5c1fd31dd3d34bd5d63080b6e3b1848c106e40

SHA512
c8276e0cc0320e35dcdca15992696ef9730b7a2fd2823a6a587d6b174715f269e87fae8fe9aa9102026817059f0c5ed89c74264c8ad9da2c11a11b78221352fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\CC4F.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

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

Filesize
39.5MB

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

Filesize
1.1MB

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

Filesize
1.5MB

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

Filesize
1.1MB

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

Filesize
1.1MB

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

Filesize
572KB

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

Filesize
20KB

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

Filesize
1.1MB

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

Filesize
1.1MB

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

Filesize
100KB

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

Filesize
1.1MB

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

Filesize
152KB

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

Filesize
152KB

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

Filesize
1.5MB

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

Filesize
1.5MB

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

Filesize
1.5MB

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

Filesize
572KB

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

Filesize
572KB

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

Filesize
572KB

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

Filesize
1.5MB

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

Filesize
572KB

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

Filesize
572KB

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

Filesize
100KB

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

Filesize
1.5MB

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

Filesize
152KB

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

Filesize
1.1MB

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

Filesize
140KB

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

Filesize
152KB

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

Filesize
1.1MB

Download