2b444dc4bb925bd3f392f28eae44df6e451bd0616ff56f4bea07a4251a2821fa

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/05/2024, 09:46

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General

Target

2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
Size

144KB
MD5

335477557cef3120763565da5d70e6eb
SHA1

088d1afe14d62ae5b7ee36317508a23198a1a1ec
SHA256

2b444dc4bb925bd3f392f28eae44df6e451bd0616ff56f4bea07a4251a2821fa
SHA512

6c4d7bfdaa11a0a52aa2612cfbffbb979cf0059904b90b6c2f393cb161bb35ea9b849d32af3c268ba14838cf8a72ee69501c81d96083b7d56b1c472ef517757d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTIm+lDcbWLbRcDG6JiiKXwcfjy9OmqM:ZRpAyazIliazTgQbokSRmKBSCL3xPeT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2952	h9hVgwXsJUnZA2j.exe
2124	CTS.exe
1200	Process not Found

Loads dropped DLL 3 IoCs

pid	Process
2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
3056	Process not Found

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"	2024-05-28_335477557cef3120763565da5d70e6eb_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	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
Token: SeDebugPrivilege	2124	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2952	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	28
PID 2872 wrote to memory of 2952	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	28
PID 2872 wrote to memory of 2952	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	28
PID 2872 wrote to memory of 2952	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	28
PID 2872 wrote to memory of 2124	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	30
PID 2872 wrote to memory of 2124	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	30
PID 2872 wrote to memory of 2124	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	30
PID 2872 wrote to memory of 2124	2872	2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_335477557cef3120763565da5d70e6eb_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\h9hVgwXsJUnZA2j.exe
  C:\Users\Admin\AppData\Local\Temp\h9hVgwXsJUnZA2j.exe
  2⤵
  - Executes dropped EXE
  PID:2952
- 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:2124

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:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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\Users\Admin\AppData\Local\Temp\h9hVgwXsJUnZA2j.exe

Filesize
73KB

MD5
d2778164ef643ba8f44cc202ec7ef157

SHA1
31eee7114eed6b0d2fb77c9f3605057639050786

SHA256
28b001bb9a72ae7a24242bfab248d767a1ac5dec981c672a3944f7a072375e9a

SHA512
cb2a5a2aeba9d6f6bfc4a3a4576961244c109aafb59f02134b03ebac4d16602ee7f141cc4adc519f15030c20e7e7d6585778870706b2ea4c74c1161729101635

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads