058ceb204a20a29e779736c5800e5a0af7ce150b58b34be504680959b1eb0ad7

Analysis

max time kernel
55s
max time network
50s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 04:44

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General

Target

2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
Size

235KB
MD5

96d0e617607910761785ddd6a1e46258
SHA1

3359457be809c1c995ab558a4c1457a964c87375
SHA256

058ceb204a20a29e779736c5800e5a0af7ce150b58b34be504680959b1eb0ad7
SHA512

4ecb82b07932857b48b34d2fae4777f2095129444189e8853e10a904fc1a889660a26815f23210d92cfb44b67ac8a75d426b3d1a827d218b09ba913b97736689
SSDEEP

6144:xZ8azm6CcFAWFkQhTzuELFe/ix2NtmnSaBt:xC0m0vTiE5eqxamS0

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

208 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

pid	process
208	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_96d0e617607910761785ddd6a1e46258_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

Processes:

2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3948 2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
Token: SeDebugPrivilege 208 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3948	2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
Token: SeDebugPrivilege	208	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe

description	pid	process	target process
PID 3948 wrote to memory of 208	3948	2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe	CTS.exe
PID 3948 wrote to memory of 208	3948	2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe	CTS.exe
PID 3948 wrote to memory of 208	3948	2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_96d0e617607910761785ddd6a1e46258_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3948

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:208

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
ef2e0f47a9e08d80c573d2a6250f807f

SHA1
55152407be89fffe71b64912bbbd33669bd8ee57

SHA256
8024bc20eae1a90176ccb8ede0823ee054d76f55e4f06fe6e8d57a61ea92a468

SHA512
2d3eb823ee3775cad90a2abd6339d0b8790416d85613932ec0b2db0cd73a4f8627cd4e1bf5a13f633a4787b13b242325bdebccc7f25d6650be2c434579357ee2

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C:\Users\Admin\AppData\Local\Temp\CzujVNc81E8ocla.exe
Filesize
235KB

MD5
315c0d7098cd1b597041f302d90ff1ff

SHA1
48ffcff3f99dc80c851d0979264d76fd34863386

SHA256
d48712c8dd087f68664b73122cf1651e42dc8b475a0c83f6551ecf3b5eb60d8c

SHA512
4b2d1bc3744132f9964cf5b109869d2571ead63b943eaebc11f6a4c83dd358615e20cb660545af8482b26cbb68c117aae07e4b9e55315dc0f913393c1f5d4602

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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 Matrix ATT&CK v13

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Downloads