f8b20c87d61ff21fe2b18b18e8762a502771dbe2438607754bec98ab7e26cf65

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-07-2024 23:37

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General

Target

2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe
Size

71KB
MD5

cfa38e1cdcda6caf3984b4f7874dee13
SHA1

1ddc102437981147814ea6e7f2db343251d1dc47
SHA256

f8b20c87d61ff21fe2b18b18e8762a502771dbe2438607754bec98ab7e26cf65
SHA512

e7d25eccadd4e4ed519478431b72f110451357a63f82aa11290bb02d3b02a67799b69f1db0359c5397a6b2a2a3d471dddd174b3e3f32749c03b79b5e4d8411db
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTG:ZRpAyazIliazTG

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2368	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe
Token: SeDebugPrivilege	2368	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2368	2324	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe	28
PID 2324 wrote to memory of 2368	2324	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe	28
PID 2324 wrote to memory of 2368	2324	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe	28
PID 2324 wrote to memory of 2368	2324	2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-05_cfa38e1cdcda6caf3984b4f7874dee13_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324
- 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:2368

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\yaPaNzmmFQMru91.exe

Filesize
71KB

MD5
7c6d6e5a070dc39c973fa479f5989697

SHA1
0033832323167f7914d99f61adc6d762381ad706

SHA256
d641829acc103389aa6ff0ddb097cd6e3f52d8c61a535072df6c9a16b6d9695a

SHA512
9b94d81550cf644bd896e1a0ca413cbd357cbfa2231d2f6b9ebfb8214d6aff6701836752d17a2269d2447ee8e6ae0cb2661b490c129cc33de26a1a3fe36b0e7d

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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

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Downloads