4fa273b1e022cbd053dc0b597933c3fdf5f8165a7b92178d4dd6474e88f59669

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
09-07-2024 18:25

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General

Target

2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe
Size

71KB
MD5

372ea54faf4a4da1ba75242277e140fc
SHA1

162cc7c0ebbc346cdf2058c0b78d2fef43e50ba0
SHA256

4fa273b1e022cbd053dc0b597933c3fdf5f8165a7b92178d4dd6474e88f59669
SHA512

b9bded6b005227a87b283a4cce11f2f60897fb62d80b96138617b0ed0edf02865f77ef59d1438c1ecbafafe3918090e8f711bd5ae2eac4e0494739a8b1b09677
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTT:ZhpAyazIlyazTT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4552	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"	2024-07-09_372ea54faf4a4da1ba75242277e140fc_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	2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	728	2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe
Token: SeDebugPrivilege	4552	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 4552	728	2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe	82
PID 728 wrote to memory of 4552	728	2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe	82
PID 728 wrote to memory of 4552	728	2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_372ea54faf4a4da1ba75242277e140fc_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728
- 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:4552

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
393KB

MD5
f2952ffeeeaea035c908152e77ea1759

SHA1
9e3cc8acad4dff150ff8951b14393a4cc7b3de5e

SHA256
dd9d43cd995425074db8e8660433ff432fbb839a2abf12144824d0c0c50b3439

SHA512
3af0349d2e28170d87b6ac18399cd1aab14228e3ad0b6b81014c275d125e852417c0ed9060510f30e68e71c6e211a6ad469dd9fc7895211cfb4233139f52e5ee

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C:\Users\Admin\AppData\Local\Temp\XJMtApJE8WaVbNV.exe

Filesize
71KB

MD5
8cb77559c025eb6a67db0cc7cf1b411d

SHA1
0bf24ae0a66202f7ce1aed4c5154886b72a2827b

SHA256
35cb93e7bdc92135b9f546c8b6957259997f58812f737b8b975f06c1e7656844

SHA512
c002345a5714c54efdc4e13db8c74c072e8fee1bf1a36e9f5e8bf6f7c4e3e06229f29dabe3d53219f768c7b8d71e27135d3ad5599be10345d66427a1eb9fbb94

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads