buer | f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302

Resubmissions

14-10-2022 17:29

221014-v2nxzadhc6 10

31-07-2022 09:54

220731-lxnxqsafd7 10

Analysis

max time kernel
155s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 09:54

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General

Target

f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe
Size

426KB
MD5

9b50709ccd111098595b0b1327b9ef7f
SHA1

e1d64b6cdde3701efaef984f96502f38a3569470
SHA256

f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302
SHA512

f8ede1263371c284da008f332625b3ca96a39e6dca6219c300562b4884da89ad2b9ed6704aac0555fa941fe7c95c7bbc2fcd5a75e1e08771103ca89df8c744ac

Score

10^/10

buer loader persistence

Malware Config

Extracted

Family

buer

https://insta-pulse.com/

https://insta-pulse.ca/

Signatures

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

Buer Loader 3 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/memory/4912-130-0x00000000001F0000-0x00000000001FB000-memory.dmp	buer
behavioral2/memory/4972-138-0x0000000000780000-0x000000000078B000-memory.dmp	buer
behavioral2/memory/4912-140-0x00000000001E0000-0x00000000001E9000-memory.dmp	buer

Executes dropped EXE 1 IoCs

pid	Process
4972	manager.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-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	manager.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ActiveX Component = "C:\\Users\\Admin\\AppData\\Roaming\\ActiveX\\manager.exe"	manager.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3820	968	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4972	manager.exe
4972	manager.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4972	4912	f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe	83
PID 4912 wrote to memory of 4972	4912	f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe	83
PID 4912 wrote to memory of 4972	4912	f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe	83
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84
PID 4972 wrote to memory of 968	4972	manager.exe	84

C:\Users\Admin\AppData\Local\Temp\f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe
"C:\Users\Admin\AppData\Local\Temp\f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
  C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe "C:\Users\Admin\AppData\Local\Temp\f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302.exe" ensgJJ
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4972
- - C:\Windows\SysWOW64\secinit.exe
    C:\Users\Admin\AppData\Roaming\ActiveX\manager.exe
    3⤵
    PID:968
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 320
      4⤵
      Program crash
      PID:3820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 968 -ip 968
1⤵
PID:3456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
426KB

MD5
9b50709ccd111098595b0b1327b9ef7f

SHA1
e1d64b6cdde3701efaef984f96502f38a3569470

SHA256
f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302

SHA512
f8ede1263371c284da008f332625b3ca96a39e6dca6219c300562b4884da89ad2b9ed6704aac0555fa941fe7c95c7bbc2fcd5a75e1e08771103ca89df8c744ac

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

Filesize
426KB

MD5
9b50709ccd111098595b0b1327b9ef7f

SHA1
e1d64b6cdde3701efaef984f96502f38a3569470

SHA256
f724eba1eb4aa6f01d8c425de2a73a672a14f71693f5bfe888ca812da2f62302

SHA512
f8ede1263371c284da008f332625b3ca96a39e6dca6219c300562b4884da89ad2b9ed6704aac0555fa941fe7c95c7bbc2fcd5a75e1e08771103ca89df8c744ac

Download Submit
memory/968-145-0x00000000007E0000-0x0000000000828000-memory.dmp

Filesize
288KB

Download
memory/4912-130-0x00000000001F0000-0x00000000001FB000-memory.dmp

Filesize
44KB

Download
memory/4912-140-0x00000000001E0000-0x00000000001E9000-memory.dmp

Filesize
36KB

Download
memory/4912-137-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4972-138-0x0000000000780000-0x000000000078B000-memory.dmp

Filesize
44KB

Download
memory/4972-144-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download