4aec4515bf65e91794dcc70a63e57c1fbb7102a4bd6a1a5b91acabe0e1fbc8b2

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
14/06/2024, 15:05

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General

Target

2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe
Size

168KB
MD5

82b76b3bee31b799314994b88a08173c
SHA1

626cf66ebc16280743d5086306118b537d36f66b
SHA256

4aec4515bf65e91794dcc70a63e57c1fbb7102a4bd6a1a5b91acabe0e1fbc8b2
SHA512

6fecba1eecc7bb60a4120beda0478cd76cd03093016014470beab3b5061a8c8ed7bb9eb13d6933d9f32bdf20d9ab02f3fd86c142c8d11db1e1268b38b3bdb879
SSDEEP

3072:ZhpAyazIlyazTKmsoki0zssfRgBuhyiACpCd0k:hZMazu6szsaNhxC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2652	CTS.exe
2372	re93I7OYZapBmeQ.exe
1124	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe

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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe
Token: SeDebugPrivilege	2652	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2372	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	28
PID 2872 wrote to memory of 2372	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	28
PID 2872 wrote to memory of 2372	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	28
PID 2872 wrote to memory of 2372	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	28
PID 2872 wrote to memory of 2652	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	29
PID 2872 wrote to memory of 2652	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	29
PID 2872 wrote to memory of 2652	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	29
PID 2872 wrote to memory of 2652	2872	2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-14_82b76b3bee31b799314994b88a08173c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_82b76b3bee31b799314994b88a08173c_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:2872
- C:\Users\Admin\AppData\Local\Temp\re93I7OYZapBmeQ.exe
  C:\Users\Admin\AppData\Local\Temp\re93I7OYZapBmeQ.exe
  2⤵
  - Executes dropped EXE
  PID:2372
- 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:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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\Users\Admin\AppData\Local\Temp\re93I7OYZapBmeQ.exe

Filesize
97KB

MD5
0655a0af4a2ff9bf591f614ba8f5721f

SHA1
b10d53dccec179109aff61b86ecca65be816f3c4

SHA256
d1a473a0dd813bd3565b810dcb8ff8bc7907478a994c564d55200925894e0d32

SHA512
9051043e6711b1f1b73f4137a8e4c16362c6be5d6c01b15f0430920ce096adf0b9f6a344462aadc5c2847ab5c0d9682df13803351449462dc5dda6059319d45f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads