d1ff51ba0d9a40dadc4f5501f39a5d0641c0fccab4d80bd0120a27e3b9915b3d

Analysis

max time kernel
92s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 02:59

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General

Target

2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
Size

73KB
MD5

98668c1277c5cbe8f48d91d6904e836d
SHA1

f0bf7858f4b22d79649c6eb4126498ed041324c4
SHA256

d1ff51ba0d9a40dadc4f5501f39a5d0641c0fccab4d80bd0120a27e3b9915b3d
SHA512

513cbaabf07af2653d158843dae67d48fab4c779fecd92d07bdde2ca960535b8ff887f823aeffc6d226c92a17a06e406cab76814755bde7fa2e6b8d9d3c470f8
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT+5:ZRpAyazIliazT+5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3808	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"	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
Token: SeDebugPrivilege	3808	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 3808	2112	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	81
PID 2112 wrote to memory of 3808	2112	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	81
PID 2112 wrote to memory of 3808	2112	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- 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:3808

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
dcd8465f25cac14ab1866884a19e5302

SHA1
c224ca13fd30ae2d8bb4083c9f85f6be966d7548

SHA256
49a4580ad7503617c7218bf320b1d2d27cb3684eca27a4377973f193e1c15d53

SHA512
9809d3cf1dbbb051415ef34a79f8aef365404a6dc0de29dc31d4d04971b1c80de8f721076ab2528c96b5787c7f59e03ed60a518439886d93b9fd7f009360882c

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C:\Users\Admin\AppData\Local\Temp\j1s0C2uhVjU5isX.exe

Filesize
73KB

MD5
d4cb220fe2bdb9e1940a510b5b21cd57

SHA1
ab4295f4aebd62c812570a12034ac10cac5221b8

SHA256
4d543ed0a65aabf98a19ce59781d36800f6e3a91f2c380d9af83bb6f3c31ee57

SHA512
25129fe6a16e0de8bbc109a29ba48958ca9069038f6ad1d627876efeba6fc57a163e6a4aec9c4279bcb16dbb859d1c44c736f33631491d64bc1586c77a77fb9a

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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