b8fd66001fbdd0302b329f372374c11dcbcca6250732eb371329ecccbaed232d

General

Target
2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
Size 3.2MB
Sample260602-vc55yscs6l
SHA256 b8fd66001fbdd0302b329f372374c11dcbcca6250732eb371329ecccbaed232d
MD5 36b59ced3e6668ecee4bb14b69b060bd
SHA1 7d97fd73979c3c9c0845a5a4dfbba7a45ca99c21
SHA512 3d2b57587604185a9e14052c3e163c43eab07c0baa69afbe1d8607d850b6251066aad69935166e735b03995c6ca84ab3f87d2ebfee2ce86dc81090ea035ff2aa
SSDEEP 98304:DknE/dA9BYlyrRYMyOgJYk+bNLabBgbDJXtHhVULhr8/:uEm9ylaYMjgJYk+bNLeMULhrk
TLSH
T178F5339BF3A948B5F9B304B516711A65465FFFB00EE76CE73E10318A5870EA0AD13B42
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

discovery persistence spyware stealer

Malware Config

Signatures

Custom signature

Detects executables packed with Dotfuscator 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000000438-3.dat	INDICATOR_EXE_Packed_Dotfuscator

Executes dropped EXE 4 IoCs

pid	Process
3332	rBvcQpCs57qKzF3.exe
4216	CTS.exe
400	rBvcQpCs57qKzF3.exe
3496	CTS.exe

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

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	CTS.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rBvcQpCs57qKzF3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rBvcQpCs57qKzF3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3188	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
Token: SeDebugPrivilege	4216	CTS.exe
Token: SeDebugPrivilege	3496	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 3332	3188	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe	80
PID 3188 wrote to memory of 4216	3188	2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe	81
PID 3332 wrote to memory of 400	3332	rBvcQpCs57qKzF3.exe	82

C:\Users\Admin\AppData\Local\Temp\2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-02_36b59ced3e6668ecee4bb14b69b060bd_bkransomware_elex_maze_rhadamanthys.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Users\Admin\AppData\Local\Temp\rBvcQpCs57qKzF3.exe
  C:\Users\Admin\AppData\Local\Temp\rBvcQpCs57qKzF3.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3332
- - C:\Users\Admin\AppData\Local\Temp\rBvcQpCs57qKzF3.exe
    C:\Users\Admin\AppData\Local\Temp\rBvcQpCs57qKzF3.exe --crash-handler "--database=c:\users\admin\appdata\local\Google\Software Reporter Tool" --url=https://clients2.google.com/cr/report --annotation=plat=Win32 --annotation=prod=ChromeFoil --annotation=ver=18.102.0 --initial-client-data=0x2a4,0x234,0x2a8,0x29c,0x2ac,0xf782fc,0xf7830c,0xf7831c
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:400
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4216

C:\Windows\CTS.exe
C:\Windows\CTS.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3496

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 393KB
SHA256 7173d8d52fb5c68b2ef2293303c4c8fc46872398cf46c75ea9a66d6e62062f63
MD5 4a8881b47beeab4363b48244a72712df
SHA1 8a8f2f9d99d4d223bbef87e8c8d01fd7c6807718
SHA512 fc77043f28a4a50dc1573d5fe04000c3fe21b93e96dbf476bb44a51560d386cbfc0a2d3a36902d3519227c5a7e8cec13b6b96d18bbea7ee11583995f3dd23a41
SSDEEP 6144:xZ8azKNYGjEQeWO0LEpOsnJgd0MFb5BU/dYRYQdpOTtFK9ClZ:xC0KNpjErWvgpOsn00MtUYRlpOTtFCy
TLSH
T15084020377D980B4E037963001A49DA103AF7E366AF59C6B7B90710E16752D1AE3E7BB
MD5 SHA1 SHA512 SSDEEP TLSH

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rBvcQpCs57qKzF3.exe

Path C:\Users\Admin\AppData\Local\Temp\rBvcQpCs57qKzF3.exe
Size 3.1MB
SHA256 b9e001c5ef4845c2c0ce7a1ce134c774a7cd011af31dfbe2a13a96da2f68570e
MD5 a20245af2627cc9d55fbb3a1c682a334
SHA1 2ddbd81a16c18a7d5099f171473439bf84210a16
SHA512 f2a1d8e559dcd3016c3ad67c3c74e88ec62adc5a36ebf16df46f13d60627a9fc3b57dc9746f4551284d1c7eb79b364e76db7e539bfb8a9c20e1828f80bff9d1b
SSDEEP 24576:9yn2D7bFEc7r34rgxlqxjHHTVKIAF3XwVTTIUpWVH1kknPrMkkkskkkkkRkkkkkX:Ug7bV4UxExTTo6TkUEmT5xxvRCI5D
TLSH
T1DFE55C13BEC04032EAB70670B87BBB51557A7E209F1364CF7AC8362E1C716D1AA72756
MD5 SHA1 SHA512 SSDEEP TLSH

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
MD5 f9d4ab0a726adc9b5e4b7d7b724912f1
SHA1 3d42ca2098475924f70ee4a831c4f003b4682328
SHA512 22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT:ZRpAyazIliazT
TLSH
T176636B03B6D2C171E4B70A7649B8CE51067FBE765EB18D5B33C4218E49752C08E3ABA7
MD5 SHA1 SHA512 SSDEEP TLSH

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settings.dat

Path \??\c:\users\admin\appdata\local\Google\Software Reporter Tool\settings.dat
Size 40B
SHA256 88bb345fb70c02ed9c6dce9d38586012a4ab1ac288c3b8ae6f85272bb3d9ce84
MD5 b50792708fafd6623632124d9106c625
SHA1 14f3b4c137639f3626e63bcfd7f1f9c57b4c89f8
SHA512 4d9b362edf28df115cd8711db4c7eadf2adebb7fc0749a61677348dc628b9c39660682f3f89569183e540273a2310638c20b24ebef4662a91661fc866d5a081e
MD5 SHA1 SHA512

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads