a32b8e880db00391bfe393156ebabda9739e3c584138975f047fa97d1743b71a

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 10:13

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General

Target

2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe
Size

71KB
MD5

45e927ddb6438ae542715cab26a97794
SHA1

86377251423ecb0fa6a9722dae7d4b9c07614f66
SHA256

a32b8e880db00391bfe393156ebabda9739e3c584138975f047fa97d1743b71a
SHA512

803055882f95fbc6028f09d363ca42c18ea39fd1c44e582137db65263af3169eb6d31c628478fb605db605589a6818274b51284fadfcfeb59b9e7eedfedfe72f
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT4:ZRpAyazIliazT4

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2464	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"	2024-04-27_45e927ddb6438ae542715cab26a97794_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	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe
Token: SeDebugPrivilege	2464	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2464	2176	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe	28
PID 2176 wrote to memory of 2464	2176	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe	28
PID 2176 wrote to memory of 2464	2176	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe	28
PID 2176 wrote to memory of 2464	2176	2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_45e927ddb6438ae542715cab26a97794_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- 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:2464

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\rdDws2PEPqafh6Z.exe

Filesize
71KB

MD5
3b0e2111696bd097bbb32128037816b5

SHA1
22e74176f627ee6b794278723277c3388fe84dc1

SHA256
8ef1cc594d0d828e66f208284c9a31121f4347d7f3ced487ac1d7822cb3f8fd8

SHA512
070048f2c8c6415d838eeb1f3fb5ce2a99d566e2ade8635ba5fc014a60e4d835903dd62e35a76a96ba24d7b416f147fa3b159b9a4eac2679839bbb7ed0665b49

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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

Replay Monitor

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Downloads