a4fb338f9b0835ee7f43ddf1aa6a5687119a4cb3a70a41828998de7d5c23c659

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
04/07/2024, 18:51

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General

Target

2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
Size

76KB
MD5

47604d39b4af645d5933728d075861c8
SHA1

17c09b3500572e7c6b7ef37c77b1745608d9ecee
SHA256

a4fb338f9b0835ee7f43ddf1aa6a5687119a4cb3a70a41828998de7d5c23c659
SHA512

7da6d391c50b8fad42a58a5289b9775a0be004b8be8711e8dbc46d493fda318d672acabe77fe1f7bbfbbf693d3e7a785e1ffdf4ebb3f0976bdda1bcb0cdde44c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTCxFz:ZRpAyazIliazTCTz

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3052	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"	2024-07-04_47604d39b4af645d5933728d075861c8_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	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
Token: SeDebugPrivilege	3052	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 3052	2868	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe	28
PID 2868 wrote to memory of 3052	2868	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe	28
PID 2868 wrote to memory of 3052	2868	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe	28
PID 2868 wrote to memory of 3052	2868	2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868
- 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:3052

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\cfLm7zNTvNcmRYX.exe

Filesize
76KB

MD5
8b31bb38ce6ca763dcd28c03953ab461

SHA1
956203614d8c9014da0f3679f709acd7de98093a

SHA256
8476e54d02ef6a866bf8b2e11e34952270ea0c119f5b5b166607218f8389a1e5

SHA512
66246ee72c29cda90a2202ec1634c0a4c0c7029682a9db4f581b0950a17f8471874df5ae18997313cf7b0845546ec6450e3a0f06e744386b46ea4e90b021ec64

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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