e8b7f4e79daee219bd2278714a3a8bf73c3ac53f5ec8fc52b250218b1d04cfee

General

Target
2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe
Size 3.2MB
Sample260724-bh331aem6x
SHA256 e8b7f4e79daee219bd2278714a3a8bf73c3ac53f5ec8fc52b250218b1d04cfee
MD5 a2d1906f1d57351de4541f2b2aac6f40
SHA1 8dd2adaacc6dcb296074e0cc87919440fb6410a1
SHA512 baff89d9c2aac5b91fa2d60555544614d912c17a544952a6daae3a0635abdec3ba1894abf4dffe3731244de00b6e58346c3306c07135949d9af5116f3473fc96
SSDEEP 98304:DCKsjTDCMpIa9IVz7o65PnSXs8MGlJuROfC:uxjPIa9cP507q+C
TLSH
T10DF53317704BA036ECA34D7C655A9E230C3FE978EE788D822D445FAD5E264E34CA435B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

Malware Config

Signatures

Detects executables packed with Dotfuscator 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000016b3c-4.dat	INDICATOR_EXE_Packed_Dotfuscator

Executes dropped EXE 4 IoCs

pid	Process
3164	YsXpJzBr090FF1L.exe
2952	CTS.exe
5408	YsXpJzBr090FF1L.exe
3948	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"	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_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	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_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	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YsXpJzBr090FF1L.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YsXpJzBr090FF1L.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5388	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe
Token: SeDebugPrivilege	2952	CTS.exe
Token: SeDebugPrivilege	3948	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5388 wrote to memory of 3164	5388	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe	89
PID 5388 wrote to memory of 2952	5388	2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe	90
PID 3164 wrote to memory of 5408	3164	YsXpJzBr090FF1L.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_bkransomware_elex_maze_rhadamanthys.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-23_a2d1906f1d57351de4541f2b2aac6f40_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:5388
- C:\Users\Admin\AppData\Local\Temp\YsXpJzBr090FF1L.exe
  C:\Users\Admin\AppData\Local\Temp\YsXpJzBr090FF1L.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Users\Admin\AppData\Local\Temp\YsXpJzBr090FF1L.exe
    C:\Users\Admin\AppData\Local\Temp\YsXpJzBr090FF1L.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=0x2b8,0x2b0,0x2bc,0x2b4,0x2c0,0xab82fc,0xab830c,0xab831c
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5408
- 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:2952

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:3948

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

onenote.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\onenote.exe_Rules.xml
Size 1.1MB
SHA256 3dd6df95ecbfbd3d44dbe48f3a8658ef3a4eb1d3746a059d0572c6f43d6533f8
MD5 b4a73b8a069d1283aa13c8d5a4495f2d
SHA1 41b6a163f309d19f23b0702d9201019f2b38363f
SHA512 e7deba98a55951be2b189b991fa23828af1d555fb0ff5717464dddd625be32fcec3544c400d82cc4e5fc6a7481703b577b67520aad88173796fbda83b338685c
SSDEEP 24576:D5m2fphBFAEVcGKloPdvrTXVQX3Whevrzkpg+sTgpNzQF:D57phzDp1+WhgRUIF
TLSH
T145452323F5E6417AE0B90D3A42B4D674462FFC9B5AF14C3F72A4589D16313C08A38B9B
MD5 SHA1 SHA512 SSDEEP TLSH

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YsXpJzBr090FF1L.exe

Path C:\Users\Admin\AppData\Local\Temp\YsXpJzBr090FF1L.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 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
TLSH
T119636B03B6D2C171E4B70A7649B8CE51067FBE765EB18D5B33C4218E49752C08E3ABA7
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 ded209c04c1a820885bd12e8664cea311308e2a5f58ebf95344bb477e41012ec
MD5 49643eb3458194fc52369f4428c53228
SHA1 765fbac65c37be93197981a33ca105f611aa37c4
SHA512 ed3a5fd87838b54f0667441ac1102aa12065a0d7ff41f92358f1d661323eb3346d7f51d591db2467a4ebf139560ec8b7d45271c8c37c382d1729ef961f51e425
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