buer | b73e52768067d97464a6991027693246fad1afb144cbf9c9e66ffc840cc8542e

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 21:43

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General

Target

d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe
Size

31KB
MD5

d91559ae45b8f9bc903d27703211b119
SHA1

f1b02bf6d06cfba37bfea3a5fdc0664cd7b8b91a
SHA256

b73e52768067d97464a6991027693246fad1afb144cbf9c9e66ffc840cc8542e
SHA512

3b048d58c7024a7d0ca78b0ffc2ec066bb4712082f8f33fd1aa853fc0ba37d207825be8517e57f548852c6bc2681a16196f7ddfd0dd792d2cb69a21afaa564af
SSDEEP

768:4R+ulCa/bIJlC2tsR/xRYDV31iVYiuyfF8s:4RtF/ohsR5ahT

Score

10^/10

buer discovery loader persistence

Malware Config

Extracted

Family

buer

https://java-stat.com/

https://installerr.pw/

Signatures

Buer
Buer is a new modular loader first seen in August 2019.
loader buer

Buer Loader 4 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/files/0x000700000002340d-2.dat	buer
behavioral2/memory/2216-5-0x0000000000CD0000-0x0000000000CDB000-memory.dmp	buer
behavioral2/memory/1884-6-0x000000003F820000-0x000000003F82B000-memory.dmp	buer
behavioral2/memory/2216-7-0x0000000000CD0000-0x0000000000CDB000-memory.dmp	buer

Executes dropped EXE 1 IoCs

pid	Process
1884	manager.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	manager.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	secinit.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	manager.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	secinit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2216	secinit.exe
2216	secinit.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1884	2252	d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe	83
PID 2252 wrote to memory of 1884	2252	d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe	83
PID 2252 wrote to memory of 1884	2252	d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe	83
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84
PID 1884 wrote to memory of 2216	1884	manager.exe	84

C:\Users\Admin\AppData\Local\Temp\d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\d91559ae45b8f9bc903d27703211b119_JaffaCakes118.exe" ensgJJ
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Windows\SysWOW64\secinit.exe
    C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe

Filesize
31KB

MD5
d91559ae45b8f9bc903d27703211b119

SHA1
f1b02bf6d06cfba37bfea3a5fdc0664cd7b8b91a

SHA256
b73e52768067d97464a6991027693246fad1afb144cbf9c9e66ffc840cc8542e

SHA512
3b048d58c7024a7d0ca78b0ffc2ec066bb4712082f8f33fd1aa853fc0ba37d207825be8517e57f548852c6bc2681a16196f7ddfd0dd792d2cb69a21afaa564af

Download Submit
memory/1884-6-0x000000003F820000-0x000000003F82B000-memory.dmp

Filesize
44KB

Download
memory/2216-4-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

Filesize
4KB

Download
memory/2216-5-0x0000000000CD0000-0x0000000000CDB000-memory.dmp

Filesize
44KB

Download
memory/2216-7-0x0000000000CD0000-0x0000000000CDB000-memory.dmp

Filesize
44KB

Download