bazarloader | 487290690d5455b475497515474f45a5daf47ca8b2e8d64155f79f7fad0bb3a8

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-en-20211208
submitted
19/01/2022, 16:14

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General

Target
Attachments.lnk
Size 1KB
Sample220119-tp5vaabdh3
SHA256 6497223d35530f2e510382aa1866b83ffaf215213b8080b7ecb299b6e7e3e6b1
MD5 e87e52db1aa360baf8444c5524dd2b26
SHA1 b89d0c4568c74f03ec3e1917c22a83c37409b10a
SHA512 e93d7808c29ec45569382ee5bd2f50a41c0cf1c1d2cbb909d5aec2abf166f0ad87b672eaa4a1c00b28eb31faf55f1a254d8ab842bcb4d22dd750b26926e7c64a
MD5 SHA1 SHA512

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

resource	yara_rule
behavioral1/memory/472-57-0x0000000180000000-0x000000018003D000-memory.dmp	BazarLoaderVar5

Loads dropped DLL 1 IoCs

pid	Process
472	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 use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 320	1600	cmd.exe	28
PID 1600 wrote to memory of 320	1600	cmd.exe	28
PID 1600 wrote to memory of 320	1600	cmd.exe	28
PID 320 wrote to memory of 652	320	cmd.exe	29
PID 320 wrote to memory of 652	320	cmd.exe	29
PID 320 wrote to memory of 652	320	cmd.exe	29
PID 320 wrote to memory of 472	320	cmd.exe	30
PID 320 wrote to memory of 472	320	cmd.exe	30
PID 320 wrote to memory of 472	320	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Attachments.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1600
- 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:320
- - C:\Windows\system32\xcopy.exe
    xcopy /y DumpStack.log c:\programdata\
    3⤵
    PID:652
- - C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\programdata\DumpStack.log,spload
    3⤵
    - Loads dropped DLL
    PID:472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/472-57-0x0000000180000000-0x000000018003D000-memory.dmp

Download

memory/1600-54-0x000007FEFB771000-0x000007FEFB773000-memory.dmp