bazarloader | 35c965adf28e7f42c45a70778e12dd69d9a07756a391d4ab43e69b69cf688e70

Analysis

max time kernel
152s
max time network
152s
platform
windows10_x64
resource
win10-en-20211208
submitted
28/01/2022, 13:15

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General

Target
Documents.lnk
Size 1KB
Sample220128-qhb2vadfc9
SHA256 e87f9f378590b95de1b1ef2aaab84e1d00f210fd6aaf5025d815f33096c9d162
MD5 4d8af5ba95aa23f7162b7bbf8622d801
SHA1 d5b8c1a219686be5b75e58c560609023b491d9aa
SHA512 f64416dbce111afe375efe031b05ed5b5b5c00c956d3c419d733147e4f0e751a60f3a22c72c36d45841abf85013c9647c6dc040cdd3d56c9b8cc35bccfd60d2c
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
behavioral2/memory/4032-115-0x0000000180000000-0x000000018002E000-memory.dmp	BazarLoaderVar5

Blocklisted process makes network request 10 IoCs

flow	pid	Process
23	4032	rundll32.exe
24	4032	rundll32.exe
26	4032	rundll32.exe
27	4032	rundll32.exe
28	4032	rundll32.exe
29	4032	rundll32.exe
30	4032	rundll32.exe
31	4032	rundll32.exe
32	4032	rundll32.exe
33	4032	rundll32.exe

Tries to connect to .bazar domain 3 IoCs

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

flow	ioc
28	reddew28c.bazar
30	bluehail.bazar
32	whitestorm9p.bazar

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 2 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 4032	3708	cmd.exe	69
PID 3708 wrote to memory of 4032	3708	cmd.exe	69

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" SharedFiles.dll,BasicScore
  2⤵
  - Blocklisted process makes network request
  PID:4032

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/4032-115-0x0000000180000000-0x000000018002E000-memory.dmp

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