2d395a362a39a19f3630b86af23ba8b267218b65f269f5b01d5ca86cf4c9763c

Analysis

max time kernel
149s
max time network
106s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/04/2026, 09:15

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General

Target
2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
Size 4.4MB
Sample260423-k73cfaf19t
SHA256 2d395a362a39a19f3630b86af23ba8b267218b65f269f5b01d5ca86cf4c9763c
MD5 1c1adfb735f2376ca6cab41ebf2faf5b
SHA1 282d0c2446e24f4d979a0a4b5bd82b00eec13076
SHA512 a421578815084f63421f1004c10eea9397636286027b7bc784b01524e64ddfc7c70cdd560b9cfa5a3a0468d0e05f4bd268ed2bf3af67efad32f57fcad396b6e6
SSDEEP 98304:250p7N5EKjKWQckVgtev5mnlNLkz3gN+H5Jn7OmT:256N5hKWQc0gEYnvLkLgNy5JnSmT
TLSH
T1AB26CF1577486072E1D396388A568A1DB6367824C7234ECB22506EDCFFF6AD0ED39372
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

ransomware spyware stealer

Malware Config

Signatures

Custom signature

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\bfsvc.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\notepad.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\splwow64.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\write.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\explorer.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\HelpPane.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\hh.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\regedit.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\winhlp32.exe	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_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
3248	notepad.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 3248	4408	2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe	81

C:\Users\Admin\AppData\Local\Temp\2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-23_1c1adfb735f2376ca6cab41ebf2faf5b_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe" C:\Users\Admin\AppData\Local\Temp\WEL2C7A.tmp
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:3248

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 4.9MB
SHA256 6e0642449c1f8550100461091e6331c8f3385844843dbb8496e4096a9f8ce6e7
MD5 51ec4cbccfdb64b56b6fb5b658120422
SHA1 adac2389a9f42b37a2c9d934a92c50017ce7e639
SHA512 17c8820a0d94a441bf0c74456f4fe4b488a07a473de61b1457d59ea4afb4c5bc834aece819560d62f602de62decf81184631afb81e3cf18c865af40b7241ce9d
SSDEEP 98304:250p7N5EKjKWQckVgtev5mnlNLkz3gN+H5Jn7OmLPF:256N5hKWQc0gEYnvLkLgNy5JnSmLP
TLSH
T16B36CF2177485072E1E396398956861DBA367824C7134ECB22506EDDFFF6AD0ED3A332
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

WEL2C7A.tmp

Path C:\Users\Admin\AppData\Local\Temp\WEL2C7A.tmp
Size 52B
SHA256 be0909be27235c36586ceb9b7e37d8d74c423d9460c4dbf0e2417fcf58b96caa
MD5 17ddbb82a40e2ac704e1045da8fb1cf6
SHA1 a570cdbc16483567fe1439903b212e33b15343b7
SHA512 031adfce17522c42262d40acb75f1db7a1942e4965ab505ee3a5b7001e07a3f16182a4093a3e9a3b99b50860bbc66205a9956b4d8da76adb823054aae6598da2
TLSH
T1449002F35491D6301587051611E8118616566D9675199405E00811251AB56520515DDA
MD5 SHA1 SHA512 TLSH