nullmixer | 2120d92e96ad3e11b8e35cd6cf867e95c31b64d4d4e43c661560b6ab281bd306

Analysis

max time kernel
0s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2024 23:40

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General

Target

4cc2560de1b2a15d3c8b8580154154af.exe
Size

2.4MB
MD5

4cc2560de1b2a15d3c8b8580154154af
SHA1

ae4ee80e9d7c315b66fc3e4f62d9ae1d25463ccc
SHA256

2120d92e96ad3e11b8e35cd6cf867e95c31b64d4d4e43c661560b6ab281bd306
SHA512

e4ffb1701a54884d053b5f17ce494a6e723ec3005a5fb967bbca021a3a6fe434e608b1a6e0f92e2b35b4f1624794b72147e339fe6ba2eecf384cf01bd469383a
SSDEEP

49152:EgBNMZwos3cWf3pyjfoQbdBXPUKwXGEOBRT2Os3ch1MVje8bSO:JBNz7f3UxtsKc5soZe83

Score

10^/10

nullmixer smokeloader vidar 933 pub5 aspackv2 backdoor dropper stealer trojan

Malware Config

Extracted

Family

nullmixer

http://razino.xyz/

Extracted

Family

smokeloader

Botnet

pub5

Extracted

Family

vidar

Version

39.6

Botnet

933

https://sslamlssa1.tumblr.com/

Attributes

profile_id
933

Extracted

Family

smokeloader

Version

2020

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/

rc4.i32

Signatures

NullMixer
NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.
dropper nullmixer
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Vidar Stealer 4 IoCs

stealer

resource	yara_rule
behavioral2/memory/1140-116-0x0000000000400000-0x0000000000A04000-memory.dmp	family_vidar
behavioral2/memory/1140-114-0x0000000002560000-0x00000000025FD000-memory.dmp	family_vidar
behavioral2/memory/1140-130-0x0000000000400000-0x0000000000A04000-memory.dmp	family_vidar
behavioral2/memory/1140-137-0x0000000002560000-0x00000000025FD000-memory.dmp	family_vidar

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000600000002321e-41.dat	aspack_v212_v242
behavioral2/files/0x000600000002321c-53.dat	aspack_v212_v242
behavioral2/files/0x0006000000023219-50.dat	aspack_v212_v242
behavioral2/files/0x000600000002321a-48.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	4cc2560de1b2a15d3c8b8580154154af.exe

Executes dropped EXE 1 IoCs

pid	Process
4864	setup_installer.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
8	ipinfo.io
9	ipinfo.io

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

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
4376	3676	WerFault.exe
3152	2608	WerFault.exe	43
4252	2916	WerFault.exe	53
1748	1140	WerFault.exe	50

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 4864	2220	4cc2560de1b2a15d3c8b8580154154af.exe	29
PID 2220 wrote to memory of 4864	2220	4cc2560de1b2a15d3c8b8580154154af.exe	29
PID 2220 wrote to memory of 4864	2220	4cc2560de1b2a15d3c8b8580154154af.exe	29

C:\Users\Admin\AppData\Local\Temp\4cc2560de1b2a15d3c8b8580154154af.exe
"C:\Users\Admin\AppData\Local\Temp\4cc2560de1b2a15d3c8b8580154154af.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
  "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
  2⤵
  - Executes dropped EXE
  PID:4864
- - C:\Users\Admin\AppData\Local\Temp\7zS00380107\setup_install.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS00380107\setup_install.exe"
    3⤵
    PID:3676

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_7.exe
1⤵
PID:1128

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_6.exe
sahiba_6.exe
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3676 -ip 3676
1⤵
PID:2076

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_1.exe
"C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_1.exe" -a
1⤵
PID:3504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3676 -s 560
1⤵
- Program crash
PID:4376

C:\Windows\SysWOW64\rundll32.exe
rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
1⤵
PID:2608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 600
  2⤵
  - Program crash
  PID:3152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2608 -ip 2608
1⤵
PID:3804

C:\Windows\system32\rUNdlL32.eXe
rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
1⤵
PID:4220

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_5.exe
sahiba_5.exe
1⤵
PID:2604

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_3.exe
sahiba_3.exe
1⤵
PID:1140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 1060
  2⤵
  - Program crash
  PID:1748

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_4.exe
sahiba_4.exe
1⤵
PID:3684

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_1.exe
sahiba_1.exe
1⤵
PID:4316

C:\Users\Admin\AppData\Local\Temp\7zS00380107\sahiba_2.exe
sahiba_2.exe
1⤵
PID:2916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2916 -s 396
  2⤵
  - Program crash
  PID:4252

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_6.exe
1⤵
PID:1916

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_5.exe
1⤵
PID:2212

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_4.exe
1⤵
PID:3360

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_3.exe
1⤵
PID:2588

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_2.exe
1⤵
PID:4748

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c sahiba_1.exe
1⤵
PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2916 -ip 2916
1⤵
PID:4540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1140 -ip 1140
1⤵
PID:4220

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zS00380107\libcurl.dll

Filesize
218KB

MD5
d09be1f47fd6b827c81a4812b4f7296f

SHA1
028ae3596c0790e6d7f9f2f3c8e9591527d267f7

SHA256
0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

SHA512
857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\libcurlpp.dll

Filesize
54KB

MD5
e6e578373c2e416289a8da55f1dc5e8e

SHA1
b601a229b66ec3d19c2369b36216c6f6eb1c063e

SHA256
43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

SHA512
9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\libgcc_s_dw2-1.dll

Filesize
113KB

MD5
9aec524b616618b0d3d00b27b6f51da1

SHA1
64264300801a353db324d11738ffed876550e1d3

SHA256
59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

SHA512
0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\libgcc_s_dw2-1.dll

Filesize
92KB

MD5
3947561e2e1528a3936ed77810504e80

SHA1
3a6891b73e59bfd230d43791914750cb1a07e126

SHA256
2c6617cde9e29d37e2fe979df0458f0c62303bc233753370a28bef035b91a0dd

SHA512
4bb05f9e36b65a881721bdb7ea4b8249562eb49294999be72e9189dbcb8e8822dc566b21aa61c8773c22211a59d261056746b2c2638a35b3b73d2401505654bc

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\libstdc++-6.dll

Filesize
647KB

MD5
5e279950775baae5fea04d2cc4526bcc

SHA1
8aef1e10031c3629512c43dd8b0b5d9060878453

SHA256
97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

SHA512
666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\libwinpthread-1.dll

Filesize
69KB

MD5
1e0d62c34ff2e649ebc5c372065732ee

SHA1
fcfaa36ba456159b26140a43e80fbd7e9d9af2de

SHA256
509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

SHA512
3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS00380107\setup_install.exe

Filesize
287KB

MD5
41e1dc8e34109e4cb4ba39dd8e09c6b4

SHA1
08d717f63ce3e78cfa429baa6e69b3517ee043d2

SHA256
e398b7b89d19348afef5af9623d86cf79ae7799a13bedafe98d580bc6d8cc365

SHA512
defddc813d6b6a6345fa645356bed2e91321b86dfb4ca609cf1db8fa53891cc82d80a3688dc6dc31ffc732ada49a4cad3a014d4783aa67819160f4276cd4955f

Download Submit
C:\Users\Admin\AppData\Local\Temp\setup_installer.exe

Filesize
896KB

MD5
090c444600a33135b212aaa17458cd7a

SHA1
66d46cbbe7abfb6615b2df10de4bfe97c275017f

SHA256
24cad9d60e67ee439c8d98faa12d495682bef015d78e8160de6974d036ea5347

SHA512
b3186d8144086a45bd988d94faede3c8b5b37f11599e613ccf078fbb0acbe873bab15c4adefdd3e05d5e283a7fe97b10d44548d8abe59f13ba4e419f53816bea

Download Submit
C:\Users\Admin\AppData\Local\Temp\setup_installer.exe

Filesize
1.1MB

MD5
59ca02be239106d0f2d069ff65be83b7

SHA1
33fd4b29803f22ef73e68c907cc2814dea65429f

SHA256
39b69fcab1f7b7535c0898572b6655628719385df7a6179fedb3c78ae6dfaaa3

SHA512
afe5a5253586c19d2ffb173ce9a3f2ecc018806e829179469ff65d5ed2ef69adac383a987e25e561c995ee315d887a2705b6b9838ca423140152697e413e78b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\setup_installer.exe

Filesize
664KB

MD5
f4c64baa14bd7d30a77101595e3217c9

SHA1
fdf7c5a51af8ace361549c924d5c17f2d47d658f

SHA256
0fac86ce81ea08795aabaea8f8b57476c08b64346f66f078da111f70d1af595a

SHA512
4f108df6a1286427a2e99af065ff98b8616884b9c05810ef7b36a6c07bb4398a190184c1821f6db614967ad78133256e83baf488ec76f342254c3ea15aca9dc5

Download Submit
memory/1140-114-0x0000000002560000-0x00000000025FD000-memory.dmp

Filesize
628KB

Download
memory/1140-116-0x0000000000400000-0x0000000000A04000-memory.dmp

Filesize
6.0MB

Download
memory/1140-137-0x0000000002560000-0x00000000025FD000-memory.dmp

Filesize
628KB

Download
memory/1140-112-0x0000000000CC0000-0x0000000000DC0000-memory.dmp

Filesize
1024KB

Download
memory/1140-130-0x0000000000400000-0x0000000000A04000-memory.dmp

Filesize
6.0MB

Download
memory/2916-106-0x0000000000400000-0x00000000009A9000-memory.dmp

Filesize
5.7MB

Download
memory/2916-105-0x00000000025C0000-0x00000000025C9000-memory.dmp

Filesize
36KB

Download
memory/2916-104-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2916-129-0x0000000000400000-0x00000000009A9000-memory.dmp

Filesize
5.7MB

Download
memory/3420-123-0x00000000027D0000-0x00000000027E5000-memory.dmp

Filesize
84KB

Download
memory/3628-95-0x000001D69E310000-0x000001D69E380000-memory.dmp

Filesize
448KB

Download
memory/3676-61-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/3676-65-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3676-115-0x0000000000F70000-0x0000000000FFF000-memory.dmp

Filesize
572KB

Download
memory/3676-110-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/3676-42-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-58-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/3676-75-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-74-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-73-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-72-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-71-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-69-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/3676-68-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3676-67-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3676-66-0x0000000064940000-0x0000000064959000-memory.dmp

Filesize
100KB

Download
memory/3676-113-0x000000006EB40000-0x000000006EB63000-memory.dmp

Filesize
140KB

Download
memory/3676-64-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3676-62-0x0000000000F70000-0x0000000000FFF000-memory.dmp

Filesize
572KB

Download
memory/3676-111-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3676-57-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/3676-108-0x0000000064940000-0x0000000064959000-memory.dmp

Filesize
100KB

Download
memory/3676-109-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/3676-107-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-60-0x000000006B440000-0x000000006B4CF000-memory.dmp

Filesize
572KB

Download
memory/3676-76-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/3676-70-0x000000006B280000-0x000000006B2A6000-memory.dmp

Filesize
152KB

Download
memory/3676-63-0x000000006FE40000-0x000000006FFC6000-memory.dmp

Filesize
1.5MB

Download
memory/3684-93-0x0000000002180000-0x0000000002190000-memory.dmp

Filesize
64KB

Download
memory/3684-131-0x00007FF9FE780000-0x00007FF9FF241000-memory.dmp

Filesize
10.8MB

Download
memory/3684-87-0x00000000000E0000-0x00000000000E8000-memory.dmp

Filesize
32KB

Download
memory/3684-135-0x0000000002180000-0x0000000002190000-memory.dmp

Filesize
64KB

Download
memory/3684-91-0x00007FF9FE780000-0x00007FF9FF241000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads