ba6a22f053b732abc46187fcc608a314a5664a749c2ca4445e76ecb7e4dcafe9

Analysis

max time kernel
118s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-04-2024 00:26

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General

Target

2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe
Size

74KB
MD5

0fd8797ebb7774ad520d7c0265c21f19
SHA1

f2aeeb2ba435ab96e76ee57074bae928210fbde7
SHA256

ba6a22f053b732abc46187fcc608a314a5664a749c2ca4445e76ecb7e4dcafe9
SHA512

8283fb0f32a19708ab1ad54059254ce5c79be484624ed178e550bbb9e5968ed3c00d2a83369e54a1d45da084abd068413e038ada7317b41fbb11a7b6b44da5ee
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTeo2x:ZRpAyazIliazTeo2x

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2832	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"	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_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	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe
Token: SeDebugPrivilege	2832	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 2832	1772	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe	28
PID 1772 wrote to memory of 2832	1772	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe	28
PID 1772 wrote to memory of 2832	1772	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe	28
PID 1772 wrote to memory of 2832	1772	2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_0fd8797ebb7774ad520d7c0265c21f19_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772
- 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:2832

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\RXI80eBOBeqV2hG.exe

Filesize
3KB

MD5
db201e8f691918b22fbb87fe85df97b8

SHA1
57e9766353d61f70e0710461ab6747652668aaff

SHA256
79720ed8092baf82f66c68106cf7f4bdc6e5cabc2990655962355f905962ee3d

SHA512
b7af725acad80a4801d1b5991c9e46736e968bef18df079440c849166bc0c7579154f2b4d844a6f3ed0aea5be5556ccdd609bd93f1db3de729eecfdcb8c113be

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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

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Downloads