798e5e17c58a763c13cd105048c6fef8ad12d40cd3f334b63689a401d2fedd0d

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 21:33

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General

Target

2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe
Size

71KB
MD5

c16c3e51f5867fcda4a9bd4d0d931ace
SHA1

5ad8040dd7e385c9d06609913f3d492e72c256dc
SHA256

798e5e17c58a763c13cd105048c6fef8ad12d40cd3f334b63689a401d2fedd0d
SHA512

efb5cadc5b59e1fc8e4db9e8d7c8fe7fd2cb5de367f5b25eb6af9b9cf684e89f86b3f5c8503aaf886900bd82ce5b81ac5ea6f12423a024a733e04f552cd42eb8
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT78:ZRpAyazIliazT78

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4856	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"	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe
Token: SeDebugPrivilege	4856	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 4856	2340	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe	85
PID 2340 wrote to memory of 4856	2340	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe	85
PID 2340 wrote to memory of 4856	2340	2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_c16c3e51f5867fcda4a9bd4d0d931ace_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- 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:4856

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
674715a2a264ed1af3262a269619fa4f

SHA1
640f3d3de87a72cca64cbb6cabb25269583a04d4

SHA256
a625c1ebc042781c7efc3534a57e46f1318526e28c09de62cbeb0f8efa8f57f6

SHA512
fe8bb7154b132a46772c793b4704d3040c27f4b1c03003b72d7af8da73602c1740a3e1c864413f6dd5f672e7c458c869c7cf0cae22730f74eca07fea1d25881d

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C:\Users\Admin\AppData\Local\Temp\o8w6S5ZFt3q4lSs.exe

Filesize
71KB

MD5
bf01a87987cb74914f8abb4cbd7632a4

SHA1
6f7fa3ff15064584d372b8a60167fa73d4e37edc

SHA256
f7ee969b5dbafd883c97639201a9a5337cdd62dea773cf908d96216588ed36fc

SHA512
c63f332da80371c4338dd3fc6bd7eb9c34f7d84ac76e4f02b23458971aee3e4d3a27db081164df0cbc32d488bef3453b3784457db98497cf1a3ebd2a6fe0c9ed

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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