af5bf0d658cd1552d3d6987a00cafbf80c25ec67baee919ccdebece8393799d3

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16/05/2024, 20:47

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General

Target

2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe
Size

518KB
MD5

497a956e93b8704854e6920322a8c5d8
SHA1

65a21a7a2a207b3341b1827ace6dde89fd9ecc9b
SHA256

af5bf0d658cd1552d3d6987a00cafbf80c25ec67baee919ccdebece8393799d3
SHA512

2b0b2c5437f30b6af7d53b54f3b342e0856e53dc5b5cb8d6443e77bbe6b57ad4287d0063bec94937969d5d2703611a8d35257355125554f0b352347957c52897
SSDEEP

12288:xC0VWb1WrvKYf5svAoFBC4eE+/xp+RiwQoXueXDv:DVg0KYxsvAoFreVZcRiw9D

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3004	CTS.exe
2176	0MIUUUxDrlydgbg.exe

Loads dropped DLL 2 IoCs

pid	Process
2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe
2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.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"	2024-05-16_497a956e93b8704854e6920322a8c5d8_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	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe
Token: SeDebugPrivilege	3004	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2176	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	28
PID 2068 wrote to memory of 2176	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	28
PID 2068 wrote to memory of 2176	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	28
PID 2068 wrote to memory of 2176	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	28
PID 2068 wrote to memory of 3004	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	29
PID 2068 wrote to memory of 3004	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	29
PID 2068 wrote to memory of 3004	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	29
PID 2068 wrote to memory of 3004	2068	2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-05-16_497a956e93b8704854e6920322a8c5d8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_497a956e93b8704854e6920322a8c5d8_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:2068
- C:\Users\Admin\AppData\Local\Temp\0MIUUUxDrlydgbg.exe
  C:\Users\Admin\AppData\Local\Temp\0MIUUUxDrlydgbg.exe
  2⤵
  - Executes dropped EXE
  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:3004

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\0MIUUUxDrlydgbg.exe

Filesize
447KB

MD5
3f461ca3e3d9da036cf1a4a06ddf4fb4

SHA1
15395e4b656cee3a708bc50c1094e3fa0c46802e

SHA256
cd8e84c1f8d1ee3a7014343e3fb236329d2b67c1ec233ea4b208d99e3f95105b

SHA512
d0cb3f56db648c9ee151990260a864cdcd0d508a1dafcd741d8b2ccd8f73ba29607f384a4e2752502419cfd4a41d2288d7c3ffec93925be85fc39dad9c01e7f5

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads