3a3df92b2bf40c70b270130d70b88d86edab07d8be4005aa76083bba6ffbf70b

Analysis

max time kernel
0s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10-01-2024 05:45

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General

Target

4fbe5007726a25d0f6a5be88f694b23a.exe
Size

8.8MB
MD5

4fbe5007726a25d0f6a5be88f694b23a
SHA1

dd7359cdb06047c89536c313bf8af71efe2c1300
SHA256

3a3df92b2bf40c70b270130d70b88d86edab07d8be4005aa76083bba6ffbf70b
SHA512

20afb00d611ab4d85597c9cfebd73a88f4843cc751ba0cec4d78d05248b04bc6698052a47c8d7fc1b5c0920ab507a3caafb189875811c9023345b32eec4ef2e0
SSDEEP

49152:EQFRHrmQG+yrY+Fr/rcrvqrmQG+yrY+Fr/rcr7G+Fr/rcrhrvqrmQG+yrY+Frjro:EcKYXMP

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2688	ywelkr.exe

Loads dropped DLL 2 IoCs

pid	Process
1160	4fbe5007726a25d0f6a5be88f694b23a.exe
1160	4fbe5007726a25d0f6a5be88f694b23a.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Main	ywelkr.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2688	ywelkr.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2688	ywelkr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2688	ywelkr.exe
2688	ywelkr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 2688	1160	4fbe5007726a25d0f6a5be88f694b23a.exe	17
PID 1160 wrote to memory of 2688	1160	4fbe5007726a25d0f6a5be88f694b23a.exe	17
PID 1160 wrote to memory of 2688	1160	4fbe5007726a25d0f6a5be88f694b23a.exe	17
PID 1160 wrote to memory of 2688	1160	4fbe5007726a25d0f6a5be88f694b23a.exe	17

C:\Users\Admin\AppData\Local\Temp\ywelkr.exe
C:\Users\Admin\AppData\Local\Temp\ywelkr.exe -run C:\Users\Admin\AppData\Local\Temp\4fbe5007726a25d0f6a5be88f694b23a.exe
1⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2688

C:\Users\Admin\AppData\Local\Temp\4fbe5007726a25d0f6a5be88f694b23a.exe
"C:\Users\Admin\AppData\Local\Temp\4fbe5007726a25d0f6a5be88f694b23a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

memory/1160-18-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/1160-17-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/1160-30-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-31-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-47-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download
memory/1160-50-0x00000000002B0000-0x0000000000300000-memory.dmp

Filesize
320KB

Download
memory/1160-0-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download
memory/1160-2-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/1160-3-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1160-4-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1160-5-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1160-6-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1160-7-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1160-36-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-8-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1160-9-0x0000000002B10000-0x0000000002B11000-memory.dmp

Filesize
4KB

Download
memory/1160-10-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/1160-12-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1160-13-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1160-14-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1160-15-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/1160-16-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1160-11-0x0000000002B00000-0x0000000002B02000-memory.dmp

Filesize
8KB

Download
memory/1160-1-0x00000000002B0000-0x0000000000300000-memory.dmp

Filesize
320KB

Download
memory/1160-19-0x0000000001F90000-0x0000000001F91000-memory.dmp

Filesize
4KB

Download
memory/1160-20-0x0000000002030000-0x0000000002031000-memory.dmp

Filesize
4KB

Download
memory/1160-21-0x0000000001FE0000-0x0000000001FE1000-memory.dmp

Filesize
4KB

Download
memory/1160-51-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-49-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-48-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-35-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-38-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-32-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-23-0x0000000001FD0000-0x0000000001FD1000-memory.dmp

Filesize
4KB

Download
memory/1160-41-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-34-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-33-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-37-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/1160-29-0x0000000002AF0000-0x0000000002AF6000-memory.dmp

Filesize
24KB

Download
memory/1160-28-0x0000000002010000-0x0000000002011000-memory.dmp

Filesize
4KB

Download
memory/1160-27-0x0000000002040000-0x0000000002041000-memory.dmp

Filesize
4KB

Download
memory/1160-26-0x0000000001FF0000-0x0000000001FF1000-memory.dmp

Filesize
4KB

Download
memory/1160-25-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

Filesize
4KB

Download
memory/1160-24-0x0000000002000000-0x0000000002001000-memory.dmp

Filesize
4KB

Download
memory/2688-90-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download
memory/2688-55-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-62-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-56-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-57-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-59-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-60-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-61-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-67-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-53-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-65-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-63-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-66-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-68-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/2688-70-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

Filesize
4KB

Download
memory/2688-71-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2688-72-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2688-73-0x0000000002B40000-0x0000000002B41000-memory.dmp

Filesize
4KB

Download
memory/2688-64-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-58-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-54-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

Filesize
1024KB

Download
memory/2688-69-0x0000000002BA0000-0x0000000002BA1000-memory.dmp

Filesize
4KB

Download