6f100cfe0df7cf3e637d9ea078bafea8a8ec45fed7692751ed81d54adf9fa345

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 20:09

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General

Target

2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe
Size

72KB
MD5

53e49db36adb45cf4ff8789a9240e353
SHA1

cf2482961c04c7e44e94514c3c6e2420ea0fa488
SHA256

6f100cfe0df7cf3e637d9ea078bafea8a8ec45fed7692751ed81d54adf9fa345
SHA512

20be5b82492f54d28e2e56c5d255a5c968a9c3d1c466798dee3408f133c0fb75e16e84f46d6487fad2b7d3b5ba6ca505314386bee32685f040d5fb831dd39b9b
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT8gL:ZRpAyazIliazT8gL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1616	CTS.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"	2024-05-31_53e49db36adb45cf4ff8789a9240e353_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	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe
Token: SeDebugPrivilege	1616	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1616	1924	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe	28
PID 1924 wrote to memory of 1616	1924	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe	28
PID 1924 wrote to memory of 1616	1924	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe	28
PID 1924 wrote to memory of 1616	1924	2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_53e49db36adb45cf4ff8789a9240e353_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- 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:1616

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:\Users\Admin\AppData\Local\Temp\m32x2cVNxzMXSz7.exe

Filesize
72KB

MD5
fe7d6d101cc5ae62e487b0569f099dd7

SHA1
914f52a3cb68db9d84f1f99c40a5bc107db0a2cd

SHA256
3b2ef612f984c6f7cc99a7be7c88f2af0e86f35a0f17ae83d4dbe04cce0a63a7

SHA512
7c90b9009eb9b9827c2a02ede105b6d4e3110f9adbde4c2101ff45890e4bcaf8d8ff0c595b75c14ee7d29c2f6511b5ce7fec41445a2a8d3bb8e236e6d4624970

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads