nullmixer | 87114e06bb514c62cf666df6a02a395c22fedb5d0e951f40a91aa0a3974e8365

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08-03-2024 01:56

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General

Target

setup_installer.exe
Size

4.0MB
MD5

5118ea744a34092421a36471432b1231
SHA1

8b08c5a40eff8fa39fe1819b4a06a0405e228600
SHA256

a07170f47dc2c8a226685a32227afc22b87ff6197bc880c5c351376304bf3434
SHA512

238ab1c76b65a89a237165e641543f9e416fc9e24d8f536459eacb1fd4500e9b8337c54201e33c84ed384d14633c6493103547a8db137eb9c19fd6e8e1a22ccc
SSDEEP

98304:x9P2x7Xmil1mBbgoXAusjzxFmt7V40/hD28ndCvLUBsKciW:x9P2xLmi6OoZoIXSLUCKciW

Score

10^/10

nullmixer aspackv2 dropper

Malware Config

Extracted

Family

nullmixer

http://watira.xyz/

Signatures

NullMixer
NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.
dropper nullmixer

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral4/files/0x000700000002323a-16.dat	aspack_v212_v242
behavioral4/files/0x0008000000023231-24.dat	aspack_v212_v242
behavioral4/files/0x0007000000023238-32.dat	aspack_v212_v242
behavioral4/files/0x0007000000023236-25.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	setup_installer.exe

Executes dropped EXE 2 IoCs

pid	Process
2732	setup_install.exe
2944	sonia_1.exe

Loads dropped DLL 11 IoCs

pid	Process
2732	setup_install.exe
2732	setup_install.exe
2732	setup_install.exe
2732	setup_install.exe
2732	setup_install.exe
2732	setup_install.exe
2732	setup_install.exe
2944	sonia_1.exe
2944	sonia_1.exe
2944	sonia_1.exe
2944	sonia_1.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2268	2732	WerFault.exe	89

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral4/files/0x000800000002322e-53.dat	nsis_installer_1
behavioral4/files/0x000800000002322e-53.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 2732	1540	setup_installer.exe	89
PID 1540 wrote to memory of 2732	1540	setup_installer.exe	89
PID 1540 wrote to memory of 2732	1540	setup_installer.exe	89
PID 2732 wrote to memory of 1132	2732	setup_install.exe	95
PID 2732 wrote to memory of 1132	2732	setup_install.exe	95
PID 2732 wrote to memory of 1132	2732	setup_install.exe	95
PID 2732 wrote to memory of 2032	2732	setup_install.exe	96
PID 2732 wrote to memory of 2032	2732	setup_install.exe	96
PID 2732 wrote to memory of 2032	2732	setup_install.exe	96
PID 2732 wrote to memory of 1136	2732	setup_install.exe	97
PID 2732 wrote to memory of 1136	2732	setup_install.exe	97
PID 2732 wrote to memory of 1136	2732	setup_install.exe	97
PID 2732 wrote to memory of 3848	2732	setup_install.exe	98
PID 2732 wrote to memory of 3848	2732	setup_install.exe	98
PID 2732 wrote to memory of 3848	2732	setup_install.exe	98
PID 2732 wrote to memory of 2932	2732	setup_install.exe	99
PID 2732 wrote to memory of 2932	2732	setup_install.exe	99
PID 2732 wrote to memory of 2932	2732	setup_install.exe	99
PID 2732 wrote to memory of 4784	2732	setup_install.exe	100
PID 2732 wrote to memory of 4784	2732	setup_install.exe	100
PID 2732 wrote to memory of 4784	2732	setup_install.exe	100
PID 2732 wrote to memory of 4972	2732	setup_install.exe	101
PID 2732 wrote to memory of 4972	2732	setup_install.exe	101
PID 2732 wrote to memory of 4972	2732	setup_install.exe	101
PID 1132 wrote to memory of 2944	1132	cmd.exe	102
PID 1132 wrote to memory of 2944	1132	cmd.exe	102
PID 1132 wrote to memory of 2944	1132	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
"C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\7zS406F4957\setup_install.exe
  "C:\Users\Admin\AppData\Local\Temp\7zS406F4957\setup_install.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_1.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1132
  - - C:\Users\Admin\AppData\Local\Temp\7zS406F4957\sonia_1.exe
      sonia_1.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:2944
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_2.exe
    3⤵
    PID:2032
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_3.exe
    3⤵
    PID:1136
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_4.exe
    3⤵
    PID:3848
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_5.exe
    3⤵
    PID:2932
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_6.exe
    3⤵
    PID:4784
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c sonia_7.exe
    3⤵
    PID:4972
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 560
    3⤵
    - Program crash
    PID:2268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2732 -ip 2732
1⤵
PID:1176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\7zS406F4957\libcurl.dll

Filesize
218KB

MD5
d09be1f47fd6b827c81a4812b4f7296f

SHA1
028ae3596c0790e6d7f9f2f3c8e9591527d267f7

SHA256
0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

SHA512
857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\libcurlpp.dll

Filesize
54KB

MD5
e6e578373c2e416289a8da55f1dc5e8e

SHA1
b601a229b66ec3d19c2369b36216c6f6eb1c063e

SHA256
43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

SHA512
9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\libgcc_s_dw2-1.dll

Filesize
113KB

MD5
9aec524b616618b0d3d00b27b6f51da1

SHA1
64264300801a353db324d11738ffed876550e1d3

SHA256
59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

SHA512
0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\libstdc++-6.dll

Filesize
647KB

MD5
5e279950775baae5fea04d2cc4526bcc

SHA1
8aef1e10031c3629512c43dd8b0b5d9060878453

SHA256
97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

SHA512
666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\libwinpthread-1.dll

Filesize
69KB

MD5
1e0d62c34ff2e649ebc5c372065732ee

SHA1
fcfaa36ba456159b26140a43e80fbd7e9d9af2de

SHA256
509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

SHA512
3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\setup_install.exe

Filesize
290KB

MD5
c9e9c8cd25c436b7881670c3b5e68350

SHA1
40489fcb73ec92f9f553a5819f3787002efdea33

SHA256
fd71aa3bd511a44f4ae2995df89d5f5eba6e8473bc275efb8562f14081d2e689

SHA512
0f41d41c6c4aa3431f023b0c8de646f3de9b5368f862a11101c1b2461e9c732443b8daedfe4df910f942cf3907d3e90747b4466e573577eaac043f3b26a2b9c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS406F4957\sonia_1.txt

Filesize
3.0MB

MD5
4bf2b8f4b46385bfda4d65e423cfb868

SHA1
6a3d20796e1fcd4169d5d339af6e491dcea3367c

SHA256
49aa06eaffe431f05687109fee25f66781abbe1108f3f8ca78c79bdec8753420

SHA512
18f12d78316da2210a7cf0506c6f2e6d1634800697e5bd60bd402597f5cc590f96f97e42878caafae3f3bc12807b715a64aa6a81f8b5ece6343cebd2a4066375

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsl6227.tmp\InstallOptions.dll

Filesize
14KB

MD5
d753362649aecd60ff434adf171a4e7f

SHA1
3b752ad064e06e21822c8958ae22e9a6bb8cf3d0

SHA256
8f24c6cf0b06d18f3c07e7bfca4e92afce71834663746cfaa9ddf52a25d5c586

SHA512
41bf41add275867553fa3bd8835cd7e2a2a362a2d5670ccbfad23700448bad9fe0f577fb6ee9d4eb81dfc10d463b325b8a873fe5912eb580936d4ad96587aa6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsl6227.tmp\System.dll

Filesize
10KB

MD5
56a321bd011112ec5d8a32b2f6fd3231

SHA1
df20e3a35a1636de64df5290ae5e4e7572447f78

SHA256
bb6df93369b498eaa638b0bcdc4bb89f45e9b02ca12d28bcedf4629ea7f5e0f1

SHA512
5354890cbc53ce51081a78c64ba9c4c8c4dc9e01141798c1e916e19c5776dac7c82989fad0f08c73e81aaba332dad81205f90d0663119af45550b97b338b9cc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsl6227.tmp\ioSpecial.ini

Filesize
497B

MD5
742ced33308fc7d4cdda0d1ed5384051

SHA1
22fda8c5f53ff7a51ae1267806c99306e5a56826

SHA256
1aaa9558235457b7f8f4531c609c55d202f59acc24d01f0cda47dafb238f1731

SHA512
bc7aae1c1df31bd913f6cd3756b7fa4cfdbd15af1cbdda0e3da8e72d95888c19cba621ae128dcee166854e56b1ad619e66102cf37eccf3715850b22e28b1fbf4

Download Submit
memory/2732-37-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/2732-50-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-38-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-42-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-41-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-40-0x0000000064940000-0x0000000064959000-memory.dmp

Filesize
100KB

Download
memory/2732-43-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-44-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-45-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/2732-46-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/2732-47-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-48-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-49-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-39-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/2732-51-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-52-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-36-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/2732-34-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/2732-35-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/2732-20-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-144-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/2732-146-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/2732-145-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/2732-147-0x000000006EB40000-0x000000006EB63000-memory.dmp

Filesize
140KB

Download
memory/2732-148-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/2732-149-0x0000000064940000-0x0000000064959000-memory.dmp

Filesize
100KB

Download