5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/03/2024, 20:32

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General

Target

5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d.exe
Size

248KB
MD5

59d1930d65dccb7a869f1de656f66117
SHA1

7b87d2b84144b34b926404e6c4f5f0bda26d9795
SHA256

5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d
SHA512

da76ceac4c73298395396b442e4e9128e1015779bd003a938796576a5739f36bfba97fbeb215907d1a4d86d55c583a302255bca5d6915c74b63dc94f32cd181e
SSDEEP

3072:mW6hAY6DxQKBL+UjcjR/6HAQ8S138WtA7Kzfk0sa73:mW6hINR+Uwl6HlXA78fJsa73

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2292-0-0x0000000000400000-0x000000000043E000-memory.dmp	UPX
behavioral1/memory/2292-7-0x0000000000400000-0x000000000043E000-memory.dmp	UPX
behavioral1/files/0x000d0000000122d1-8.dat	UPX
behavioral1/memory/2916-16-0x0000000000400000-0x000000000043E000-memory.dmp	UPX

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
2916	tbckyxk.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2292-0-0x0000000000400000-0x000000000043E000-memory.dmp	upx
behavioral1/memory/2292-7-0x0000000000400000-0x000000000043E000-memory.dmp	upx
behavioral1/files/0x000d0000000122d1-8.dat	upx
behavioral1/memory/2916-16-0x0000000000400000-0x000000000043E000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\tbckyxk.exe	5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d.exe
File created	C:\PROGRA~3\Mozilla\newtrln.dll	tbckyxk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2916	1404	taskeng.exe	29
PID 1404 wrote to memory of 2916	1404	taskeng.exe	29
PID 1404 wrote to memory of 2916	1404	taskeng.exe	29
PID 1404 wrote to memory of 2916	1404	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d.exe
"C:\Users\Admin\AppData\Local\Temp\5b22095d459789fb7fec4eb7e019b4722a05d580e94f5262ff4eb76f8035e67d.exe"
1⤵
- Drops file in Program Files directory
PID:2292

C:\Windows\system32\taskeng.exe
taskeng.exe {C0809AE8-9C41-4144-A5D8-9BC7CB8FFBB5} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1404
- C:\PROGRA~3\Mozilla\tbckyxk.exe
  C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  PID:2916

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~3\Mozilla\tbckyxk.exe

Filesize
248KB

MD5
b4da6c15361aa1a294a5bda6bc4f1a22

SHA1
5ef16b1ffd23af316c1d0ebe7a172658db3c021d

SHA256
6f199ce98d04428dd498c3b03dbd128235ff018f02c1ea4c3b01fdb1b3d775a8

SHA512
c3be1f56c54e8a2262de3b3aec1776b8c6e66594090a3969e5d90fd08a7e48117642f83202542c82fc649fd533cca6d06bea009351c334a148bd5fc83183a60f

Download Submit
memory/2292-0-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2292-1-0x0000000001B60000-0x0000000001BBB000-memory.dmp

Filesize
364KB

Download
memory/2292-7-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2916-10-0x0000000000220000-0x000000000027B000-memory.dmp

Filesize
364KB

Download
memory/2916-16-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download