3571646eb4975ff2536a6a48334bd14e5b0c6031c78bd21a2615cc993ce96fc8

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30/04/2024, 10:17

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General

Target

2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe
Size

71KB
MD5

dc0916a76c2b1d4ff5ec0c1d9d882682
SHA1

dba9509f43bb5b54b96e305c7de171a7522add46
SHA256

3571646eb4975ff2536a6a48334bd14e5b0c6031c78bd21a2615cc993ce96fc8
SHA512

28854e95f4bfc83016a388fc970daa97e50dee6ff81939aad940dad6261c1a408f8a5660ad57ff3c1082ec335b4d4a33f33cf643bb4e3227aeeabeb4a7a5f965
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTr:ZRpAyazIliazTr

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1636	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"	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.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	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe
Token: SeDebugPrivilege	1636	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 1636	2308	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe	28
PID 2308 wrote to memory of 1636	2308	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe	28
PID 2308 wrote to memory of 1636	2308	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe	28
PID 2308 wrote to memory of 1636	2308	2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_dc0916a76c2b1d4ff5ec0c1d9d882682_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308
- 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:1636

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\Temp\luyxWXWYzPHtXri.exe

Filesize
71KB

MD5
b2c698495dd9e6c7fe85f1c176f6ebb0

SHA1
533fa9a63ecd513db38f5f0b0378102e3a38d740

SHA256
32188e458eaaa9f520ea839707ddc0af638c5b084dc23317939f549c630399fd

SHA512
388e108c6d91fe189d19e80dbc19ff4fd43e0cb42ca71788214f2f7086c3b103a3839045d04c9ac523baab74a842ea8fa3f162f1db57fbb4e39efb0ca865d125

Download Submit
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

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Downloads