33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-04-2024 20:24

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General

Target

33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591.exe
Size

426KB
MD5

a9692b98efd1d94fa3b0b9afef4703e4
SHA1

662aa0c98498034bcebf8c52657160b38909fc87
SHA256

33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591
SHA512

e3ce7b732610d5a403efdeceb4b21ea84a748a70ffe0d6dcae503061f11e92f3f1fc7b00e6aceb0c33f3934fe6743ba02d859afe19bc7516b4c14772928718d4
SSDEEP

6144:F48bmcXXXXXXXXXAXX7h6Ylo8Tvp3nbZPbjq92AXjIIHXjOWJPZ7Vn8:O8BXXXXXXXXXAXX7hx6UhqXH9Z18

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000400000-0x000000000045F000-memory.dmp	UPX
behavioral1/files/0x000c000000015a2d-5.dat	UPX
behavioral1/memory/2508-7-0x0000000000400000-0x000000000045F000-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
2508	tbckyxk.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000400000-0x000000000045F000-memory.dmp	upx
behavioral1/files/0x000c000000015a2d-5.dat	upx
behavioral1/memory/2508-7-0x0000000000400000-0x000000000045F000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\tbckyxk.exe	33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591.exe
File created	C:\PROGRA~3\Mozilla\newtrln.dll	tbckyxk.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1784	33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591.exe
2508	tbckyxk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2508	2580	taskeng.exe	29
PID 2580 wrote to memory of 2508	2580	taskeng.exe	29
PID 2580 wrote to memory of 2508	2580	taskeng.exe	29
PID 2580 wrote to memory of 2508	2580	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591.exe
"C:\Users\Admin\AppData\Local\Temp\33ea49910b198bc405ebd1f9f8acf2860e0a14ffd4678ea83c54159fe1d7c591.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:1784

C:\Windows\system32\taskeng.exe
taskeng.exe {B0C74251-6EF6-417A-B563-93E26C829358} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2580
- C:\PROGRA~3\Mozilla\tbckyxk.exe
  C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:2508

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
426KB

MD5
0bd5b6c0031215d18c0bd2d1bd4ff1e0

SHA1
90fe02915c4a08024c3ddb2faf46cdb34ad68ac6

SHA256
0f3b71115f0d93a48a50154d7308c31381cb6a8fb7f65908937aea65d1b4b00e

SHA512
edba5cb244b90a3dc4e6485460bb25a945134c92f34698f9f167b6a1f60765e0e541d3ec682df23513b8203f93562a6db152c8089b5aeb57bc215e8f6ec9517a

Download Submit
memory/1784-0-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1784-2-0x00000000002F0000-0x000000000034B000-memory.dmp

Filesize
364KB

Download
memory/1784-1-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1784-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2508-7-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2508-8-0x0000000000330000-0x000000000038B000-memory.dmp

Filesize
364KB

Download
memory/2508-9-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2508-11-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2508-12-0x0000000000330000-0x000000000038B000-memory.dmp

Filesize
364KB

Download