bazarloader | 26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 18:06

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General

Target

fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.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 9 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2380-0-0x0000000027FA0000-0x0000000028004000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2380-1-0x00007FF894670000-0x00007FF894812000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2380-7-0x00007FF894670000-0x00007FF894812000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2380-8-0x0000000027FA0000-0x0000000028004000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2772-9-0x0000000027C30000-0x0000000027C94000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2772-10-0x00007FF894670000-0x00007FF894812000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2772-17-0x00007FF894670000-0x00007FF894812000-memory.dmp	BazarLoaderVar3
behavioral2/memory/2772-18-0x0000000027C30000-0x0000000027C94000-memory.dmp	BazarLoaderVar3
behavioral2/memory/832-21-0x0000000027850000-0x00000000278B4000-memory.dmp	BazarLoaderVar3

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

832 regsvr32.exe

pid	process
832	regsvr32.exe

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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RealtechUpdate = "\"C:\\Windows\\system32\\regsvr32.exe\" /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Damp\\eykksoxlcvg.exe\" mscp arih"	reg.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

3500 reg.exe
Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXE

pid process

2800 PING.EXE
460 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

regsvr32.exe

pid process

2772 regsvr32.exe
2772 regsvr32.exe

pid	process
3500	reg.exe

pid	process
2800	PING.EXE
460	PING.EXE

pid	process
2772	regsvr32.exe
2772	regsvr32.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

regsvr32.execmd.exeregsvr32.execmd.execmd.exe

description	pid	process	target process
PID 2380 wrote to memory of 1104	2380	regsvr32.exe	cmd.exe
PID 2380 wrote to memory of 1104	2380	regsvr32.exe	cmd.exe
PID 1104 wrote to memory of 2800	1104	cmd.exe	PING.EXE
PID 1104 wrote to memory of 2800	1104	cmd.exe	PING.EXE
PID 1104 wrote to memory of 2772	1104	cmd.exe	regsvr32.exe
PID 1104 wrote to memory of 2772	1104	cmd.exe	regsvr32.exe
PID 2772 wrote to memory of 3940	2772	regsvr32.exe	cmd.exe
PID 2772 wrote to memory of 3940	2772	regsvr32.exe	cmd.exe
PID 2772 wrote to memory of 2564	2772	regsvr32.exe	cmd.exe
PID 2772 wrote to memory of 2564	2772	regsvr32.exe	cmd.exe
PID 2772 wrote to memory of 260	2772	regsvr32.exe	cmd.exe
PID 2772 wrote to memory of 260	2772	regsvr32.exe	cmd.exe
PID 260 wrote to memory of 460	260	cmd.exe	PING.EXE
PID 260 wrote to memory of 460	260	cmd.exe	PING.EXE
PID 2564 wrote to memory of 3500	2564	cmd.exe	reg.exe
PID 2564 wrote to memory of 3500	2564	cmd.exe	reg.exe
PID 260 wrote to memory of 832	260	cmd.exe	regsvr32.exe
PID 260 wrote to memory of 832	260	cmd.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2380

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\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1104

C:\Windows\system32\PING.EXE
ping 127.0.0.1 -n 8
3⤵
- Runs ping.exe
PID:2800

C:\Windows\system32\regsvr32.exe
"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2772

C:\Windows\system32\cmd.exe
cmd.exe /c echo %temp%
4⤵
PID:3940

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\eykksoxlcvg.exe\" mscp arih"
4⤵
- Suspicious use of WriteProcessMemory
PID:2564

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\eykksoxlcvg.exe\" mscp arih"
5⤵
- Adds Run key to start application
- Modifies registry key
PID:3500

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\eykksoxlcvg.exe" mscp arih & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:260

C:\Windows\system32\PING.EXE
ping 127.0.0.1 -n 8
5⤵
- Runs ping.exe
PID:460

C:\Windows\system32\regsvr32.exe
"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe" mscp arih
5⤵
- Loads dropped DLL
PID:832

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4796 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:3788

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe
Filesize
1.3MB

MD5
fd52cd9bfb7b40a3992c2ec5f42bdcb8

SHA1
9f0a0af3faf66b2715f575fd56a7a2968a077b47

SHA256
26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09

SHA512
d83cc92992a35c4c06507e5ad4804d822acb8aa2f61cc34763ed72e596dbeab67b5554eedd15b33a9649f93044c49d43c0b6eb4c195b6906041465a2d70a195d

Download Submit
memory/832-21-0x0000000027850000-0x00000000278B4000-memory.dmp

Filesize
400KB

Download
memory/2380-0-0x0000000027FA0000-0x0000000028004000-memory.dmp

Filesize
400KB

Download
memory/2380-1-0x00007FF894670000-0x00007FF894812000-memory.dmp

Filesize
1.6MB

Download
memory/2380-7-0x00007FF894670000-0x00007FF894812000-memory.dmp

Filesize
1.6MB

Download
memory/2380-8-0x0000000027FA0000-0x0000000028004000-memory.dmp

Filesize
400KB

Download
memory/2772-9-0x0000000027C30000-0x0000000027C94000-memory.dmp

Filesize
400KB

Download
memory/2772-10-0x00007FF894670000-0x00007FF894812000-memory.dmp

Filesize
1.6MB

Download
memory/2772-17-0x00007FF894670000-0x00007FF894812000-memory.dmp

Filesize
1.6MB

Download
memory/2772-18-0x0000000027C30000-0x0000000027C94000-memory.dmp

Filesize
400KB

Download