5fd062ba8c0642cb519ea307fd3a4d9ed710328547de1ddb3371c18fbd46f063

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/06/2024, 11:38

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General

Target

2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe
Size

174KB
MD5

6ee709ee51cc7adc5f01acf44eb7b4c9
SHA1

1c1ae7798f31fd194cdc844a3977fb90a9d7b593
SHA256

5fd062ba8c0642cb519ea307fd3a4d9ed710328547de1ddb3371c18fbd46f063
SHA512

c04586d5295f44af497c7af453e20ddcebea0d9d45ff72ba87791b2d677d53e108f4793e1eebc125240dea88bd3f539b9446bcf692f6cd7b76f3cb243bdedd4f
SSDEEP

3072:ZRpAyazIliazTx6DFfblDKsSBwUnQpS3FtFNqTqaz3zT59mi6Ue:xZ8azduF58wUQpSVtFoTquzKi4

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1352	gcXwkI54d0bNVHJ.exe
1712	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe
2192	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"	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_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	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe
Token: SeDebugPrivilege	1712	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 1352	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	28
PID 2112 wrote to memory of 1352	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	28
PID 2112 wrote to memory of 1352	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	28
PID 2112 wrote to memory of 1352	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	28
PID 2112 wrote to memory of 1712	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	30
PID 2112 wrote to memory of 1712	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	30
PID 2112 wrote to memory of 1712	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	30
PID 2112 wrote to memory of 1712	2112	2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_6ee709ee51cc7adc5f01acf44eb7b4c9_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:2112
- C:\Users\Admin\AppData\Local\Temp\gcXwkI54d0bNVHJ.exe
  C:\Users\Admin\AppData\Local\Temp\gcXwkI54d0bNVHJ.exe
  2⤵
  - Executes dropped EXE
  PID:1352
- 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:1712

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\gcXwkI54d0bNVHJ.exe

Filesize
103KB

MD5
e4d92b5ef0a285e516346f7cfdb4e28a

SHA1
6f8ef7957e10b7a05e05a9627c6694787105af24

SHA256
9b3e52a8c3bb12380d3e87f470f76ef48a1eb570bbc83de17b7ed10aee398f5d

SHA512
b65cd1855a73ab028482e2dc183b61874f45373e1f9cae3b14ca9fe8bb25172117b37594c052df5ee4d7dfae36199e7c7139b18afb61153fe3aac0feaefa705a

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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