bazarloader | 291c573996c647508544e8e21bd2764e6e4c834d53d6d2c8903a0001c783764b

General

Target

rt3ret3.exe
Size

236KB
MD5

efa4b2e7d7016a1f80efff5840de3a18
SHA1

04606786daa6313867c7ada1f0c9c925d9b602fb
SHA256

291c573996c647508544e8e21bd2764e6e4c834d53d6d2c8903a0001c783764b
SHA512

11446166922efb329d547ce329fb3ed70a3a99c1c037533beaecefd16d4a67c9dc9201592b0428a06fd956e4bb5caf3f7997a86200792e3e29a041f0963b2ced

Score

10^/10

bazarloader dropper loader persistence

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/4648-2-0x0000000180000000-0x0000000180032000-memory.dmp	BazarLoaderVar1

Executes dropped EXE 2 IoCs

pid	Process
3244	RCC29FF.exe
4372	RCC29FF.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	RCC29FF.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\BFFLSPUL8 = "cmd.exe /c reg.exe add HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run /f /v R5MMYFWEP2 /t REG_SZ /d \"\\\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RCC29FF.exe\\\" B7TP738\" & start \"H\" \"C:\\Users\\Admin\\AppData\\Local\\Temp\\RCC29FF.exe\" B7TP738"	RCC29FF.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
3020	PING.EXE
1900	PING.EXE
4168	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4648	rt3ret3.exe
4648	rt3ret3.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 4180	4648	rt3ret3.exe	78
PID 4648 wrote to memory of 4180	4648	rt3ret3.exe	78
PID 4180 wrote to memory of 4168	4180	cmd.exe	80
PID 4180 wrote to memory of 4168	4180	cmd.exe	80
PID 4180 wrote to memory of 3956	4180	cmd.exe	81
PID 4180 wrote to memory of 3956	4180	cmd.exe	81
PID 3956 wrote to memory of 3228	3956	rt3ret3.exe	82
PID 3956 wrote to memory of 3228	3956	rt3ret3.exe	82
PID 3228 wrote to memory of 3020	3228	cmd.exe	84
PID 3228 wrote to memory of 3020	3228	cmd.exe	84
PID 3228 wrote to memory of 3244	3228	cmd.exe	85
PID 3228 wrote to memory of 3244	3228	cmd.exe	85
PID 3244 wrote to memory of 4284	3244	RCC29FF.exe	86
PID 3244 wrote to memory of 4284	3244	RCC29FF.exe	86
PID 4284 wrote to memory of 1900	4284	cmd.exe	88
PID 4284 wrote to memory of 1900	4284	cmd.exe	88
PID 4284 wrote to memory of 4372	4284	cmd.exe	89
PID 4284 wrote to memory of 4372	4284	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\rt3ret3.exe
"C:\Users\Admin\AppData\Local\Temp\rt3ret3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c ping 8.8.8.8 -n 2 & C:\Users\Admin\AppData\Local\Temp\rt3ret3.exe BC2NS
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4180
- - C:\Windows\system32\PING.EXE
    ping 8.8.8.8 -n 2
    3⤵
    - Runs ping.exe
    PID:4168
- - C:\Users\Admin\AppData\Local\Temp\rt3ret3.exe
    C:\Users\Admin\AppData\Local\Temp\rt3ret3.exe BC2NS
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3956
  - - C:\Windows\SYSTEM32\cmd.exe
      cmd /c ping 8.8.8.8 -n 2 & C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe DC8E
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3228
    - - C:\Windows\system32\PING.EXE
        
        ping 8.8.8.8 -n 2
        5⤵
        Runs ping.exe
        
        PID:3020
    - - C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe
        
        C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe DC8E
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of WriteProcessMemory
        
        PID:3244
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c ping 8.8.8.8 -n 2 & C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe B7TP738
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4284
        
        C:\Windows\system32\PING.EXE
        
        ping 8.8.8.8 -n 2
        7⤵
        Runs ping.exe
        
        PID:1900
        
        C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe
        
        C:\Users\Admin\AppData\Local\Temp\RCC29FF.exe B7TP738
        7⤵
        Executes dropped EXE
        
        PID:4372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4648-2-0x0000000180000000-0x0000000180032000-memory.dmp

Filesize
200KB

Download

Analysis

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