nullmixer | ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788

Analysis

max time kernel
152s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/04/2024, 14:46

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General

Target
ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe
Size 4.3MB
Sample240410-r5raqabf84
SHA256 ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788
MD5 1fecb6eb98e8ee72bb5f006dd79c6f2f
SHA1 be839bfca14bf92aed92083fd118afd1c7919f96
SHA512 c459cbba1af2967bee875cf2820148ae3729182d7faeb3224418818d96e6ea18fa9e9f61fb82c34e931ecf630339d4d4e9e1da1a57668fd8c85100bcf7dac036
SSDEEP 98304:Jr5Pi396Hjee/ATcUEuclRuPUSp6pPsklZnhNCv8Q6H6cI/nR:Jr509Gqe/AIUEuclR0USgpPsklZnev84
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nullmixer aspackv2 dropper

Malware Config

Extracted

Family

nullmixer

http://estrix.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
behavioral1/files/0x0006000000016252-39.dat	aspack_v212_v242
behavioral1/files/0x000d000000015603-53.dat	aspack_v212_v242
behavioral1/files/0x002800000001559a-56.dat	aspack_v212_v242
behavioral1/files/0x0007000000015bfc-59.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
1844	setup_installer.exe
2588	setup_install.exe

Loads dropped DLL 19 IoCs

pid	Process
1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe
1844	setup_installer.exe
1844	setup_installer.exe
1844	setup_installer.exe
1844	setup_installer.exe
1844	setup_installer.exe
1844	setup_installer.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
2588	setup_install.exe
1780	WerFault.exe
1780	WerFault.exe
1780	WerFault.exe
1780	WerFault.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
1780	2588	WerFault.exe	29

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1996 wrote to memory of 1844	1996	ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe	28
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 1844 wrote to memory of 2588	1844	setup_installer.exe	29
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33
PID 2588 wrote to memory of 1780	2588	setup_install.exe	33

C:\Users\Admin\AppData\Local\Temp\ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe
"C:\Users\Admin\AppData\Local\Temp\ec602e5151e622f2f47d79575dc42aacf84681c7f4f901b146a5edb85507f788.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
  "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Users\Admin\AppData\Local\Temp\7zS437BEEE6\setup_install.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS437BEEE6\setup_install.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2588
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2588 -s 348
      4⤵
      Loads dropped DLL
      Program crash
      PID:1780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

libcurlpp.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS437BEEE6\libcurlpp.dll
Size 54KB
SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
MD5 e6e578373c2e416289a8da55f1dc5e8e
SHA1 b601a229b66ec3d19c2369b36216c6f6eb1c063e
SHA512 9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89
SSDEEP 768:W//WT2mbP+7x4Mx5KzVAn/QqvtdZs8LlR67diTNh4joK7qmQhyOl4UuGoxX9j3D:WHIK1R2VA/Qqvtzz67dbn1QhyOl4UuD
MD5 SHA1 SHA512 SSDEEP

Submit Download

libstdc++-6.dll

Path C:\Users\Admin\AppData\Local\Temp\7zS437BEEE6\libstdc++-6.dll
Size 647KB
SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
MD5 5e279950775baae5fea04d2cc4526bcc
SHA1 8aef1e10031c3629512c43dd8b0b5d9060878453
SHA512 666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02
SSDEEP 12288:ZGRoW1chMjnv+gvJhb6bmpPSmCnh4o0v4Mc2jTrKoDSwq/3PmkfT4CmwcMcP1uE:uowcmBhKmlC4o0v4k1
MD5 SHA1 SHA512 SSDEEP

Submit Download

libcurl.dll

Path \Users\Admin\AppData\Local\Temp\7zS437BEEE6\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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libgcc_s_dw2-1.dll

Path \Users\Admin\AppData\Local\Temp\7zS437BEEE6\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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libwinpthread-1.dll

Path \Users\Admin\AppData\Local\Temp\7zS437BEEE6\libwinpthread-1.dll
Size 69KB
SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
MD5 1e0d62c34ff2e649ebc5c372065732ee
SHA1 fcfaa36ba456159b26140a43e80fbd7e9d9af2de
SHA512 3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61
SSDEEP 1536:xPCESXKWzkxTz8uLfdkWr2sUX8YNKykl1wwwwUXrMZE4cYdz:x6baWwxH8EzSHYZE4cYdz
MD5 SHA1 SHA512 SSDEEP

Submit Download

setup_install.exe

Path \Users\Admin\AppData\Local\Temp\7zS437BEEE6\setup_install.exe
Size 291KB
SHA256 a0bbbc6603b16c0178e8e9ae86d5aa39686e7a3f084e0b82d7633bbb0cbcce92
MD5 58efaf6fa04a8d7201ab19170785ce85
SHA1 744fe9d15bbdcafaf9be6f75ccba5e25c5e98fe8
SHA512 a346f5bccdfed715c416503a417187f23219db2f7854849dd6bdee14be9b7cab1d08b49e7b634db074c19e8b32f4c20f8f14d3022eca72ea2bb7476fa026d362
SSDEEP 6144:BGEMRrHz0QvBhn7xqUhCCwY8yx9CD8FcKOh3eLHGcXtNcMoyeyd4GX:BARn0QvBhlqUHLfC4/Oh3eLHGcnWqRX
MD5 SHA1 SHA512 SSDEEP

Submit Download

setup_installer.exe

Path \Users\Admin\AppData\Local\Temp\setup_installer.exe
Size 4.3MB
SHA256 6a9a3047c827fcd99d8a97668337ca2d7af78b3b634e73e2461e8429e264c7e2
MD5 5de2818ced29a1fedb9b24c1044ebd45
SHA1 c4ba9e1456ae58f25ae8d0d63cf192aa2a8bb506
SHA512 9e43a56af0c2a3deac9528b1805f9ee00958c018194b4297149f3bd34fa9be81a133c6592a961d9f4989cbeb5436d2b764e8fc3f7a4410be676a40faf46a2656
SSDEEP 98304:xwCvLUBsgDAFcgEYkZPc8PA34Ztu6dh1VwE3soCHeEGdnmX:xNLUCgDAOgEYkZPDAIZtu6dh1p3sveEb
MD5 SHA1 SHA512 SSDEEP

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memory/1844-42-0x0000000002530000-0x000000000264D000-memory.dmp

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memory/2588-73-0x0000000000520000-0x000000000063D000-memory.dmp

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memory/2588-80-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/2588-60-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/2588-68-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/2588-67-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-70-0x0000000064940000-0x0000000064959000-memory.dmp

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memory/2588-72-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/2588-69-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/2588-50-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-75-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-76-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-77-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-78-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-61-0x000000006B440000-0x000000006B4CF000-memory.dmp

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memory/2588-81-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/2588-83-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-84-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-85-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-86-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-87-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-88-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-93-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/2588-95-0x000000006B280000-0x000000006B2A6000-memory.dmp

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memory/2588-94-0x0000000064940000-0x0000000064959000-memory.dmp

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memory/2588-98-0x000000006FE40000-0x000000006FFC6000-memory.dmp

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memory/2588-97-0x000000006EB40000-0x000000006EB63000-memory.dmp

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memory/2588-96-0x000000006B440000-0x000000006B4CF000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads