05f4076b6f63050f6f3caa89a1c82929463c3946147b38eb54221e9c58018452

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
02/11/2023, 02:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe
Size

449KB
MD5

5eab858bc1d35f935ed98f853c9266f0
SHA1

fa6848ea49efeee2c357299bfbae05eecf3c4668
SHA256

05f4076b6f63050f6f3caa89a1c82929463c3946147b38eb54221e9c58018452
SHA512

bd91013f155b1258add5d3eb1fd2816d52e8d6c1f85de2f02e6da41104f4122fd8a96de6f8d2c554ef6d08620819ed925afb0e08a8c4d7010ab2e6e0aefe4eb5
SSDEEP

12288:XKn1XIeKARqf1pCA3GBAWcZAXN8I/d6xMW5KEy6YjQb0wLj/zU3k:X48C+1pCA3GBAWcZAXN8I/d6xMW5KEyU

Score

10^/10

dropper persistence trojan

Malware Config

Signatures

Malware Backdoor - Berbew 1 IoCs

Berbew is a malware infection classified as a 'backdoor' Trojan. This malicious program's primary function is to cause chain infections - it can download/install additional malware such as other Trojans, ransomware, and cryptominers.

persistence dropper trojan

resource	yara_rule
behavioral2/files/0x0009000000022ce9-5.dat	family_berbew

Deletes itself 1 IoCs

pid	Process
4884	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4884	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2244	3092	WerFault.exe	87
3172	4884	WerFault.exe	96

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3092	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	2944	svchost.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
4884	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 4884	3092	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe	96
PID 3092 wrote to memory of 4884	3092	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe	96
PID 3092 wrote to memory of 4884	3092	NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe	96

C:\Users\Admin\AppData\Local\Temp\NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3092 -s 396
  2⤵
  - Program crash
  PID:2244
- C:\Users\Admin\AppData\Local\Temp\NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe
  C:\Users\Admin\AppData\Local\Temp\NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:4884
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 364
    3⤵
    - Program crash
    PID:3172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3092 -ip 3092
1⤵
PID:3668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 4884 -ip 4884
1⤵
PID:1752

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:4528

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2944

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\NEAS.5eab858bc1d35f935ed98f853c9266f0_JC.exe

Filesize
449KB

MD5
5f801716356c073bab27ee3413f8266f

SHA1
db36c2407c2bb56e6a87f3539746bc7d625c908b

SHA256
1b542ae1a5a6b10100ab0d5ff149b8c89f8ff8037d9e2ba8b8758ed933b397f0

SHA512
ecbac794f991c9a6883c2dbe8feb9a0d9066c12f4e8f70ba16ead1f61b5946131100829a0671504666db7cd26704571b003ae0016d7673e5a0536cda4bfe41ce

Download Submit
memory/2944-14-0x00000228D3040000-0x00000228D3050000-memory.dmp

Filesize
64KB

Download
memory/2944-30-0x00000228D3140000-0x00000228D3150000-memory.dmp

Filesize
64KB

Download
memory/2944-46-0x00000228DB470000-0x00000228DB471000-memory.dmp

Filesize
4KB

Download
memory/2944-49-0x00000228DB4A0000-0x00000228DB4A1000-memory.dmp

Filesize
4KB

Download
memory/2944-48-0x00000228DB4A0000-0x00000228DB4A1000-memory.dmp

Filesize
4KB

Download
memory/2944-50-0x00000228DB5B0000-0x00000228DB5B1000-memory.dmp

Filesize
4KB

Download
memory/3092-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3092-0-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4884-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4884-8-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/4884-9-0x0000000004D80000-0x0000000004DB8000-memory.dmp

Filesize
224KB

Download
memory/4884-51-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download