8983257360d37a9d55a821451b98cb7e2a6199c2e0d559ebe17782fdf9893a6e

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
15/04/2026, 04:49

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General

Target
2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
Size 6.6MB
Sample260415-ffth1aez7q
SHA256 8983257360d37a9d55a821451b98cb7e2a6199c2e0d559ebe17782fdf9893a6e
MD5 a8d20aaaa3b9491440cbc828ad0ebc10
SHA1 14a8d5bd0644da7376638ec3e5adbbd4c9bda230
SHA512 8bd6fcee928f77bee18f3625ca1986dd01a68a955efd72aef2f2f2c4e9e07f22704749c3d6385bec90c46bad3e5385d6641a58c26b8a811f820fbdaf1f168249
SSDEEP 98304:3n7OizOn7Oiz+1/tr37wsWKjKWQckVgtev5mnlNL:3nSizOnSizeB7KWQc0gEYnvL
TLSH
T1BE66BE0667B880E4C16AC17989239912F6B27C4D4730E6DF07A09A7B1F777E1AE3DB11
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

ransomware spyware stealer

Malware Config

Signatures

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000025f8f-6.dat	UPX

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Windows directory 9 IoCs

description	ioc	Process
File created	C:\Windows\HelpPane.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\hh.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\winhlp32.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\notepad.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\regedit.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\splwow64.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\write.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\bfsvc.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\explorer.exe	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1084	notepad.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 1084	1456	2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe	81

C:\Users\Admin\AppData\Local\Temp\2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_a8d20aaaa3b9491440cbc828ad0ebc10_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe" C:\Users\Admin\AppData\Local\Temp\WEL1E8F.tmp
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1084

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

vcredist_x86.exe

Path C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\vcredist_x86.exe
Size 13.7MB
SHA256 246cc3b54faa13583e5d5c4872c44828424aa16090caa9dad16a77dfdac60b9f
MD5 a592f145965a17ea61d80d96346055e4
SHA1 3a2c96532e0a5708f48c1dd057dbf261d6cb4e52
SHA512 93d05c7ef21f4e80f12d9df293abe817436d121481786624132e9ee4d9a0ca2c3b4e0d5273f99c2bc3911689b5cc4040366b9da24ccc22da33d20155b6f8992d
SSDEEP 196608:3nSizOnSizeB7KWQc0gEYnvLfnSizOnSizeB7KWQc0gEYnvLvP:3jOjeAcZEIvrjOjeAcZEIv
TLSH
T12CE6BE0667B880E4C16AC1798923D912FA727C4D4730E6DB07A09A7B1F777E1AE3E711
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

WEL1E8F.tmp

Path C:\Users\Admin\AppData\Local\Temp\WEL1E8F.tmp
Size 52B
SHA256 be0909be27235c36586ceb9b7e37d8d74c423d9460c4dbf0e2417fcf58b96caa
MD5 17ddbb82a40e2ac704e1045da8fb1cf6
SHA1 a570cdbc16483567fe1439903b212e33b15343b7
SHA512 031adfce17522c42262d40acb75f1db7a1942e4965ab505ee3a5b7001e07a3f16182a4093a3e9a3b99b50860bbc66205a9956b4d8da76adb823054aae6598da2
TLSH
T1449002F35491D6301587051611E8118616566D9675199405E00811251AB56520515DDA
MD5 SHA1 SHA512 TLSH