af319509e52b77336f8736215052108b88f18e12c07142c75d9d53e2fcecd44a

General

Target

2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
Size

96KB
MD5

bb19de9f5329db71d81e69ee2f21ddd3
SHA1

647723334252e318df75800e3675126b5b48acfd
SHA256

af319509e52b77336f8736215052108b88f18e12c07142c75d9d53e2fcecd44a
SHA512

fe6b835a7b3c8b2cf9cca9003d71b0e051aaf6678c631d85eb45cf9ced9b8cb95de18840e09cba08a3d474a959326d6f48ac7d6bcc7c757eb3319e57eb2e891e
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT0N/UWpApm8MSpdPu0:ZhpAyazIlyazTClSBMK

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
320	OXCbAmE5X2VFIbG.exe
2768	CTS.exe

Loads dropped DLL 3 IoCs

pid	Process
2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
2788	Process not Found

Reads user/profile data of web browsers 2 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

Adds Run key to start application 2 TTPs 2 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"	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
Token: SeDebugPrivilege	2768	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 320	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	30
PID 2200 wrote to memory of 320	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	30
PID 2200 wrote to memory of 320	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	30
PID 2200 wrote to memory of 320	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	30
PID 2200 wrote to memory of 2768	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	31
PID 2200 wrote to memory of 2768	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	31
PID 2200 wrote to memory of 2768	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	31
PID 2200 wrote to memory of 2768	2200	2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-10_bb19de9f5329db71d81e69ee2f21ddd3_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Users\Admin\AppData\Local\Temp\OXCbAmE5X2VFIbG.exe
  C:\Users\Admin\AppData\Local\Temp\OXCbAmE5X2VFIbG.exe
  2⤵
  - Executes dropped EXE
  PID:320
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:2768

Network

MITRE ATT&CK Enterprise v15

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\OXCbAmE5X2VFIbG.exe

Filesize
96KB

MD5
1c4d0009d233775d158dc69e93be0574

SHA1
7959f1fcd0ff92ee91af84eec279ca86c60e2ab3

SHA256
53c33dec5de5cd605cd23468d96018f600acbae8a3f6cb44a620476957a1e8d9

SHA512
7a5710278c9f9a9d55b1fd9559eaae94b60e6289a1dcfcce8e13089e72b3dda4b359e12a33fc596ad072932c02b0b8592886c9b55eac3c292e2cecbdca6e61b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\OXCbAmE5X2VFIbG.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/320-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads