bazarloader | caaed9f830f2ced381c2c7194de867847dbe555f80a279055118365aa20267f5

Analysis

max time kernel
200s
max time network
205s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 00:32

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General

Target

koj6.dll
Size

454KB
MD5

3e15774110de70d497ee38502140d161
SHA1

8a08eda45b47323c11b9057222c20b32e9055b09
SHA256

caaed9f830f2ced381c2c7194de867847dbe555f80a279055118365aa20267f5
SHA512

00a93bd39e2c495bb3f4f50d2c2d0515112e2cb0a353612ba515e2a5026f7c6a32f75c0368c3d916664bc80cae89d54ac17d95b69514b58794eede648d8a9eb5
SSDEEP

12288:OFpeEkIsPmFj2fqpjqNLJMUKSNWdC5krVTsKdLFPTxl/smqk8ymWlhJ5ZNf:Wpecb2fIjgLK6NwxThf7j75ZNf

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 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2936-0-0x0000000001F50000-0x00000000021FA000-memory.dmp	BazarLoaderVar5
behavioral1/memory/2936-1-0x0000000001F50000-0x00000000021FA000-memory.dmp	BazarLoaderVar5

Tries to connect to .bazar domain 2 IoCs
Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.

Processes:

flow ioc

18 greencloud46a.bazar
21 whitestorm9p.bazar
Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 195.10.195.195
Destination IP 195.10.195.195
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

description flow ioc

HTTP URL 12 https://api.opennicproject.org/geoip/?bare&ipv=4
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
18	greencloud46a.bazar
21	whitestorm9p.bazar

description	ioc
Destination IP	195.10.195.195
Destination IP	195.10.195.195

description	flow	ioc
HTTP URL	12	https://api.opennicproject.org/geoip/?bare&ipv=4

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 2804 wrote to memory of 1196	2804	cmd.exe	rundll32.exe
PID 2804 wrote to memory of 1196	2804	cmd.exe	rundll32.exe
PID 2804 wrote to memory of 1196	2804	cmd.exe	rundll32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\koj6.dll
1⤵
PID:2936

C:\Windows\system32\control.exe
"C:\Windows\system32\control.exe" /name Microsoft.DefaultPrograms
1⤵
PID:2848

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:2872

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\system32\rundll32.exe
rundll32 koj6.dll
2⤵
PID:1196

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2804-27-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/2804-33-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/2936-0-0x0000000001F50000-0x00000000021FA000-memory.dmp

Filesize
2.7MB

Download
memory/2936-1-0x0000000001F50000-0x00000000021FA000-memory.dmp

Filesize
2.7MB

Download