Malware Analysis Report

2024-08-06 01:45

Sample ID 240420-wp32ssef7x
Target fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118
SHA256 26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09
Tags
bazarloader dropper loader persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09

Threat Level: Known bad

The file fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader persistence

Bazar Loader

Bazar/Team9 Loader payload

Loads dropped DLL

Adds Run key to start application

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Modifies registry key

Runs ping.exe

Suspicious use of WriteProcessMemory

Suspicious behavior: CmdExeWriteProcessMemorySpam

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Remote System Discovery
T1018
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-20 18:06

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-20 18:06

Reported

2024-04-20 18:09

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

146s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RealtechUpdate = "\"C:\\Windows\\system32\\regsvr32.exe\" /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Damp\\eykksoxlcvg.exe\" mscp arih" C:\Windows\system32\reg.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\system32\reg.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2380 wrote to memory of 1104 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2380 wrote to memory of 1104 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 1104 wrote to memory of 2800 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 1104 wrote to memory of 2800 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 1104 wrote to memory of 2772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1104 wrote to memory of 2772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2772 wrote to memory of 3940 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2772 wrote to memory of 3940 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2772 wrote to memory of 2564 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2772 wrote to memory of 2564 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2772 wrote to memory of 260 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2772 wrote to memory of 260 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 260 wrote to memory of 460 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 260 wrote to memory of 460 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2564 wrote to memory of 3500 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\reg.exe
PID 2564 wrote to memory of 3500 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\reg.exe
PID 260 wrote to memory of 832 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 260 wrote to memory of 832 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4796 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis & exit

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis

C:\Windows\system32\cmd.exe

cmd.exe /c echo %temp%

C:\Windows\system32\cmd.exe

cmd.exe /c reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe\" mscp arih"

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe" mscp arih & exit

C:\Windows\system32\reg.exe

reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v RealtechUpdate /t REG_SZ /d "\"C:\Windows\system32\regsvr32.exe\" /s \"C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe\" mscp arih"

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe" mscp arih

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 28.173.189.20.in-addr.arpa udp

Files

memory/2380-0-0x0000000027FA0000-0x0000000028004000-memory.dmp

memory/2380-1-0x00007FF894670000-0x00007FF894812000-memory.dmp

memory/2380-7-0x00007FF894670000-0x00007FF894812000-memory.dmp

memory/2380-8-0x0000000027FA0000-0x0000000028004000-memory.dmp

memory/2772-9-0x0000000027C30000-0x0000000027C94000-memory.dmp

memory/2772-10-0x00007FF894670000-0x00007FF894812000-memory.dmp

memory/2772-17-0x00007FF894670000-0x00007FF894812000-memory.dmp

memory/2772-18-0x0000000027C30000-0x0000000027C94000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Damp\eykksoxlcvg.exe

MD5 fd52cd9bfb7b40a3992c2ec5f42bdcb8
SHA1 9f0a0af3faf66b2715f575fd56a7a2968a077b47
SHA256 26be0ba3533703f5eeea8489e6a8881461dab7f597f33e546182ba1910953d09
SHA512 d83cc92992a35c4c06507e5ad4804d822acb8aa2f61cc34763ed72e596dbeab67b5554eedd15b33a9649f93044c49d43c0b6eb4c195b6906041465a2d70a195d

memory/832-21-0x0000000027850000-0x00000000278B4000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-20 18:06

Reported

2024-04-20 18:09

Platform

win7-20240220-en

Max time kernel

143s

Max time network

123s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll

Signatures

Bazar Loader

loader dropper bazarloader

Bazar/Team9 Loader payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: CmdExeWriteProcessMemorySpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2184 wrote to memory of 2452 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2184 wrote to memory of 2452 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2184 wrote to memory of 2452 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\cmd.exe
PID 2452 wrote to memory of 2896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2452 wrote to memory of 2896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2452 wrote to memory of 2896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2452 wrote to memory of 2576 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2452 wrote to memory of 2576 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2452 wrote to memory of 2576 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2452 wrote to memory of 2576 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2452 wrote to memory of 2576 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll

C:\Windows\system32\cmd.exe

cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis & exit

C:\Windows\system32\PING.EXE

ping 127.0.0.1 -n 8

C:\Windows\system32\regsvr32.exe

"C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\fd52cd9bfb7b40a3992c2ec5f42bdcb8_JaffaCakes118.dll" mscp ahis

Network

N/A

Files

memory/2184-0-0x00000000275F0000-0x0000000027654000-memory.dmp

memory/2184-1-0x000007FEF6030000-0x000007FEF61D2000-memory.dmp

memory/2184-6-0x000007FEF6030000-0x000007FEF61D2000-memory.dmp

memory/2184-7-0x00000000275F0000-0x0000000027654000-memory.dmp

memory/2576-8-0x0000000027800000-0x0000000027864000-memory.dmp

memory/2576-9-0x000007FEF5E80000-0x000007FEF6022000-memory.dmp