bazarloader | 26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09

Analysis

max time kernel
158s
max time network
135s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
10-04-2024 09:59

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General

Target

26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09.dll
Size

1.3MB
MD5

fd52cd9bfb7b40a3992c2ec5f42bdcb8
SHA1

9f0a0af3faf66b2715f575fd56a7a2968a077b47
SHA256

26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09
SHA512

d83cc92992a35c4c06507e5ad4804d822acb8aa2f61cc34763ed72e596dbeab67b5554eedd15b33a9649f93044c49d43c0b6eb4c195b6906041465a2d70a195d
SSDEEP

24576:ax12nIqqCgOgFO9fccuUMHKv+i7e1LXEdFoGzIyXjxeKF:aYIqJPV9fcHqmGSr9oF

Score

10^/10

bazarloader dropper loader persistence

Malware Config

Signatures

Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
loader dropper bazarloader

Bazar/Team9 Loader payload 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-0-0x0000000027210000-0x0000000027274000-memory.dmp	BazarLoaderVar3
behavioral1/memory/1684-1-0x000007FEF6490000-0x000007FEF6632000-memory.dmp	BazarLoaderVar3
behavioral1/memory/1684-8-0x000007FEF6490000-0x000007FEF6632000-memory.dmp	BazarLoaderVar3
behavioral1/memory/1684-9-0x0000000027210000-0x0000000027274000-memory.dmp	BazarLoaderVar3
behavioral1/memory/2832-10-0x00000000272C0000-0x0000000027324000-memory.dmp	BazarLoaderVar3
behavioral1/memory/2832-11-0x000007FEF62E0000-0x000007FEF6482000-memory.dmp	BazarLoaderVar3
behavioral1/memory/2832-18-0x000007FEF62E0000-0x000007FEF6482000-memory.dmp	BazarLoaderVar3
behavioral1/memory/2832-19-0x00000000272C0000-0x0000000027324000-memory.dmp	BazarLoaderVar3

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\RealtechUpdate = "\"C:\\Windows\\system32\\regsvr32.exe\" /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Damp\\vtuvatht.exe\" mscp arih"	reg.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1640 reg.exe
Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXE

pid process

2156 PING.EXE
1528 PING.EXE
Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

Processes:

regsvr32.exe

pid process

2832 regsvr32.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

regsvr32.exe

pid process

2832 regsvr32.exe

pid	process
1640	reg.exe

pid	process
2156	PING.EXE
1528	PING.EXE

pid	process
2832	regsvr32.exe

pid	process
2832	regsvr32.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

regsvr32.execmd.exeregsvr32.execmd.execmd.exe

description	pid	process	target process
PID 1684 wrote to memory of 2236	1684	regsvr32.exe	cmd.exe
PID 1684 wrote to memory of 2236	1684	regsvr32.exe	cmd.exe
PID 1684 wrote to memory of 2236	1684	regsvr32.exe	cmd.exe
PID 2236 wrote to memory of 2156	2236	cmd.exe	PING.EXE
PID 2236 wrote to memory of 2156	2236	cmd.exe	PING.EXE
PID 2236 wrote to memory of 2156	2236	cmd.exe	PING.EXE
PID 2236 wrote to memory of 2832	2236	cmd.exe	regsvr32.exe
PID 2236 wrote to memory of 2832	2236	cmd.exe	regsvr32.exe
PID 2236 wrote to memory of 2832	2236	cmd.exe	regsvr32.exe
PID 2236 wrote to memory of 2832	2236	cmd.exe	regsvr32.exe
PID 2236 wrote to memory of 2832	2236	cmd.exe	regsvr32.exe
PID 2832 wrote to memory of 2012	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 2012	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 2012	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 332	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 332	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 332	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 748	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 748	2832	regsvr32.exe	cmd.exe
PID 2832 wrote to memory of 748	2832	regsvr32.exe	cmd.exe
PID 332 wrote to memory of 1640	332	cmd.exe	reg.exe
PID 332 wrote to memory of 1640	332	cmd.exe	reg.exe
PID 332 wrote to memory of 1640	332	cmd.exe	reg.exe
PID 748 wrote to memory of 1528	748	cmd.exe	PING.EXE
PID 748 wrote to memory of 1528	748	cmd.exe	PING.EXE
PID 748 wrote to memory of 1528	748	cmd.exe	PING.EXE

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\system32\cmd.exe
cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09.dll" mscp ahis & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\system32\PING.EXE
ping 127.0.0.1 -n 8
3⤵
- Runs ping.exe
PID:2156

C:\Windows\system32\regsvr32.exe
"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09.dll" mscp ahis
3⤵
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2832

C:\Windows\system32\cmd.exe
cmd.exe /c echo %temp%
4⤵
PID:2012

C:\Windows\system32\cmd.exe
cmd.exe /c reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\vtuvatht.exe\" mscp arih"
4⤵
- Suspicious use of WriteProcessMemory
PID:332

C:\Windows\system32\reg.exe
reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\vtuvatht.exe\" mscp arih"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:1640

C:\Windows\system32\cmd.exe
cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\vtuvatht.exe" mscp arih & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\system32\PING.EXE
ping 127.0.0.1 -n 8
5⤵
- Runs ping.exe
PID:1528

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

memory/1684-0-0x0000000027210000-0x0000000027274000-memory.dmp

Filesize
400KB

Download
memory/1684-1-0x000007FEF6490000-0x000007FEF6632000-memory.dmp

Filesize
1.6MB

Download
memory/1684-8-0x000007FEF6490000-0x000007FEF6632000-memory.dmp

Filesize
1.6MB

Download
memory/1684-9-0x0000000027210000-0x0000000027274000-memory.dmp

Filesize
400KB

Download
memory/2832-10-0x00000000272C0000-0x0000000027324000-memory.dmp

Filesize
400KB

Download
memory/2832-11-0x000007FEF62E0000-0x000007FEF6482000-memory.dmp

Filesize
1.6MB

Download
memory/2832-18-0x000007FEF62E0000-0x000007FEF6482000-memory.dmp

Filesize
1.6MB

Download
memory/2832-19-0x00000000272C0000-0x0000000027324000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads