e865b38aa950be383f7f7597894010f6acfedd3bd575e0f18d605a4f3bee94de

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 14:44

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General

Target

2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe
Size

71KB
MD5

bf9655b4b41e067b37955f5b410029a1
SHA1

8f288b1ae592bf2ae2bee76eec11a66a818ba456
SHA256

e865b38aa950be383f7f7597894010f6acfedd3bd575e0f18d605a4f3bee94de
SHA512

364cc569d28daa00c6510867dc8f8f28d4568322bf967d557543b1c9ede16e6002441daab5d7c2b732d699eda6eccc7a7c32ed80321b93490200a8656fcb48f0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTL:ZRpAyazIliazTL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2732	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"	2024-05-12_bf9655b4b41e067b37955f5b410029a1_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	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe
Token: SeDebugPrivilege	2732	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2732	2940	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe	28
PID 2940 wrote to memory of 2732	2940	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe	28
PID 2940 wrote to memory of 2732	2940	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe	28
PID 2940 wrote to memory of 2732	2940	2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_bf9655b4b41e067b37955f5b410029a1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940
- 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:2732

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\55hkrvYbKFz3Yz7.exe

Filesize
71KB

MD5
fc84889935524497a6cf16c044eff1d4

SHA1
9cf20f59b2a00720df374bcb6a958441b99bad6f

SHA256
40ae715974b0c9fc8d0b531a30e6c97a572217736910e149d9a6666595e8aa8d

SHA512
3e3497c38871c17981f54e7e6d79b233534f4243568e12ba565874504ccde69aeb429e08896eb081986e5850cd6b2ebab38df800fe50d5174be59a62b8cde39a

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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