bazarloader | 5ceb28316f29c3912332065eeaaebf59f10d79cd9388ef2a7802b9bb80d797be

Analysis

max time kernel
90s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
23-03-2022 14:55

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General

Target

Attachments.lnk
Size

1KB
MD5

e87e52db1aa360baf8444c5524dd2b26
SHA1

b89d0c4568c74f03ec3e1917c22a83c37409b10a
SHA256

6497223d35530f2e510382aa1866b83ffaf215213b8080b7ecb299b6e7e3e6b1
SHA512

e93d7808c29ec45569382ee5bd2f50a41c0cf1c1d2cbb909d5aec2abf166f0ad87b672eaa4a1c00b28eb31faf55f1a254d8ab842bcb4d22dd750b26926e7c64a

Score

10^/10

bazarloader dropper loader

Malware Config

Signatures

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

Bazar/Team9 Loader payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1824-135-0x0000000180000000-0x000000018003D000-memory.dmp	BazarLoaderVar5

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

Processes:

cmd.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation cmd.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1824 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	cmd.exe

pid	process
1824	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.execmd.exe

description	pid	process	target process
PID 4240 wrote to memory of 3176	4240	cmd.exe	cmd.exe
PID 4240 wrote to memory of 3176	4240	cmd.exe	cmd.exe
PID 3176 wrote to memory of 448	3176	cmd.exe	xcopy.exe
PID 3176 wrote to memory of 448	3176	cmd.exe	xcopy.exe
PID 3176 wrote to memory of 1824	3176	cmd.exe	rundll32.exe
PID 3176 wrote to memory of 1824	3176	cmd.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Attachments.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4240

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c xcopy /y DumpStack.log c:\programdata\ && C:\Windows\System32\rundll32.exe C:\programdata\DumpStack.log,spload && exit
2⤵
- Suspicious use of WriteProcessMemory
PID:3176

C:\Windows\system32\xcopy.exe
xcopy /y DumpStack.log c:\programdata\
3⤵
PID:448

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\programdata\DumpStack.log,spload
3⤵
- Loads dropped DLL
PID:1824

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\DumpStack.log
MD5
85326ee9659fc5bf82c6d71b74f02684

SHA1
f2bd6c53e806861256285bb1c0d51312a10267a8

SHA256
ca3c7c4b570751c0dbf9063a23035967dfca4a2c7a8ce6bb2997439257ac6f10

SHA512
43b621dc4169a370241423c3775a1ac9ea83fb4df73111cb396b149f79a9d51122c5f3f8f1158482feefe62d45af741d04540e4578f84e613f0a5c668d41cf0b

Download Submit
C:\programdata\DumpStack.log
MD5
85326ee9659fc5bf82c6d71b74f02684

SHA1
f2bd6c53e806861256285bb1c0d51312a10267a8

SHA256
ca3c7c4b570751c0dbf9063a23035967dfca4a2c7a8ce6bb2997439257ac6f10

SHA512
43b621dc4169a370241423c3775a1ac9ea83fb4df73111cb396b149f79a9d51122c5f3f8f1158482feefe62d45af741d04540e4578f84e613f0a5c668d41cf0b

Download Submit
memory/448-131-0x0000000000000000-mapping.dmp

Download
memory/1824-132-0x0000000000000000-mapping.dmp

Download
memory/1824-135-0x0000000180000000-0x000000018003D000-memory.dmp

Filesize
244KB

Download
memory/3176-130-0x0000000000000000-mapping.dmp

Download