ae765c77668b8037c67af0192a347874f96a2d251167239bcd75c70594cc61b5

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2024 14:25

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General

Target

2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe
Size

247KB
MD5

6c7504c5626db4dd99f7a410ed3ce3e9
SHA1

664684d8f064e99a2fa453f745f886e2271f3627
SHA256

ae765c77668b8037c67af0192a347874f96a2d251167239bcd75c70594cc61b5
SHA512

b57f73ae41ded3367a716ebe89c70644d240d0e30c4de15a4f99ed04f1420a3eca75e1a45373d6323119f6d12c3ee471cbff40676aa72465ae6cda8cf3cc9646
SSDEEP

3072:ZRpAyazIliazTZ/7OEcMpySU7sGRHuhfuVPjlCM/v0iyiZFXp/HAq2wht2r2lqJ:xZ8aztaEcMSBM5uVv0ViZFX9gC2ilo

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
736	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"	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_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	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe
Token: SeDebugPrivilege	736	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 736	2916	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe	81
PID 2916 wrote to memory of 736	2916	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe	81
PID 2916 wrote to memory of 736	2916	2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_6c7504c5626db4dd99f7a410ed3ce3e9_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916
- 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:736

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
c55b071cd256d4b3d49b4f1171851ec6

SHA1
b0f804cf18b361d3df38c22abf2d2ef3799a1ce6

SHA256
6b2a489da708a2f176b06c441f9f477027c76c67866cdfd115406a799c3717a8

SHA512
60dc7b3e0c1973d8074e7b1657ccf35d70598fd2a8080cfa43649729288afdf5cbd2ab284844836d6bb5fca9dd8b3b914e4a24db62875ed55a0bbe3a55d04f82

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C:\Users\Admin\AppData\Local\Temp\f5xrKv6bjWS8IzH.exe

Filesize
247KB

MD5
e67117905fb6b5d39618803063be052b

SHA1
b288b72aceb12387a1e837a54496d09100dbc079

SHA256
d58896e30a3dfb9b0c83b6694c9553d8bace90f55a2eae2c78ec5b95a04ddffd

SHA512
cdac9d1339e01ac590b1b63cb56ec958d42c48bd9ce47a09ad01306355e786eb2a76323a0388a6b5d79fa5d331cc6d6fb6265df680693330e19b33a007e1ffaa

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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