149e03e566c522e5395a8143a2f7990d75998eef80fe37269cf3271f2b657673

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/07/2024, 15:27

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General

Target

2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe
Size

174KB
MD5

3251b768177c97d15af1384a5312639a
SHA1

62c43a17372ec81819b3f203314a90c403cebd60
SHA256

149e03e566c522e5395a8143a2f7990d75998eef80fe37269cf3271f2b657673
SHA512

cb45ac9c008183a29448ea3ae6f99bf5b222631ef7ed529de5a8670369c4b10ec2d220a15f747daa21fd21ca5e56f4de4d085648d34520f71d8c0c13953866ba
SSDEEP

3072:ZhpAyazIlyazTYU3X24SC0IO8Te+Hpt5OoUaOUhfL48D:hZMazp24SZIOIPMDaz48D

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1840	EzugMaStX6M5HfY.exe
2664	CTS.exe
1148	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe
2956	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"	2024-07-01_3251b768177c97d15af1384a5312639a_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	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe
Token: SeDebugPrivilege	2664	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 1840	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	28
PID 2240 wrote to memory of 1840	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	28
PID 2240 wrote to memory of 1840	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	28
PID 2240 wrote to memory of 1840	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	28
PID 2240 wrote to memory of 2664	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	30
PID 2240 wrote to memory of 2664	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	30
PID 2240 wrote to memory of 2664	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	30
PID 2240 wrote to memory of 2664	2240	2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-07-01_3251b768177c97d15af1384a5312639a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-01_3251b768177c97d15af1384a5312639a_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:2240
- C:\Users\Admin\AppData\Local\Temp\EzugMaStX6M5HfY.exe
  C:\Users\Admin\AppData\Local\Temp\EzugMaStX6M5HfY.exe
  2⤵
  - Executes dropped EXE
  PID:1840
- 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:2664

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
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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\Users\Admin\AppData\Local\Temp\EzugMaStX6M5HfY.exe

Filesize
103KB

MD5
40e6081a84568a750c469df520dd0ae1

SHA1
fcc160e9f213a7ce674861c9f4efab2b9f0b13d5

SHA256
b33db48ce11539130b143caa2eec3a38c439de13a2aeffed07cb9b89bcc82fd4

SHA512
91feb528a2c033d0f5261a6c244b640a988d1a42caf0b8bd144a458555a1172e9ac7b23d2ff9304366559008cf3f92445ce59398a3756c0ed3ef343b824f82a2

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads