b812907f8403a8382376cf4a6fb783dd9feed0383308bc304d0ca898f720ef8c

Analysis

max time kernel
149s
max time network
157s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
16/04/2026, 03:48

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General

Target
2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
Size 4.7MB
Sample260416-ecs8dse14j
SHA256 b812907f8403a8382376cf4a6fb783dd9feed0383308bc304d0ca898f720ef8c
MD5 0f1b04b49131b5100219c2a98e21e406
SHA1 db73ac61324378bbbc1fd00e85d59fc4e2df0d41
SHA512 1d3a3c9fc8ae0657800e1df4b6197061ea950e4b0aa30ab7df5f7b9fb4a488df055e299bc41b68885bc210293649e3e0db2533f7c0b79c7d7f7934ef558b5557
SSDEEP 98304:2DYvupw35HrtCKjKWQckVgtev5mnlNL4w4TM:2Dk35HrhKWQc0gEYnvL4wD
TLSH
T1AB36AE1563EC1069F1B34635DA348152FE76BCB92B21D2DF1250A53D2F72AD0DE3AB22
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

ransomware spyware stealer

Malware Config

Signatures

Detects executables manipulated with Fody 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000025f24-6.dat	INDICATOR_EXE_Packed_Fody

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	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\notepad.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\write.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\explorer.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\HelpPane.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\hh.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\regedit.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\splwow64.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
File created	C:\Windows\winhlp32.exe	2026-04-16_0f1b04b49131b5100219c2a98e21e406_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
2548	notepad.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 2548	3424	2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe	80

C:\Users\Admin\AppData\Local\Temp\2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-16_0f1b04b49131b5100219c2a98e21e406_amadey_cobalt-strike_coinminer_hellokitty_hijackloader_i.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe" C:\Users\Admin\AppData\Local\Temp\WEL3B4.tmp
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2548

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 5.1MB
SHA256 b703c970ee391123e153e87af19d6caf2a2051fc8f996c9ea421ab052edf0b0c
MD5 b64d4e41d5626ead027577152b008131
SHA1 4d14d80974a92b1fe9a28d16cfb74f8e755b3405
SHA512 793f82bb8a85798898fb9592fdcc7375ac14255cc875834a3a5dd82ddcc4edf7270e522549129b220a9d1aaff58abe6baff28d481502f43b841b5595c90635c8
SSDEEP 98304:2DYvupw35HrtCKjKWQckVgtev5mnlNL4w4TCPF:2Dk35HrhKWQc0gEYnvL4wbP
TLSH
T16B46AE2663EC1069F1F30675D9348111FE76BCB92B21D2DF0250A93D2E76AD0DE7A722
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

WEL3B4.tmp

Path C:\Users\Admin\AppData\Local\Temp\WEL3B4.tmp
Size 52B
SHA256 be0909be27235c36586ceb9b7e37d8d74c423d9460c4dbf0e2417fcf58b96caa
MD5 17ddbb82a40e2ac704e1045da8fb1cf6
SHA1 a570cdbc16483567fe1439903b212e33b15343b7
SHA512 031adfce17522c42262d40acb75f1db7a1942e4965ab505ee3a5b7001e07a3f16182a4093a3e9a3b99b50860bbc66205a9956b4d8da76adb823054aae6598da2
TLSH
T1449002F35491D6301587051611E8118616566D9675199405E00811251AB56520515DDA
MD5 SHA1 SHA512 TLSH