60732f115f3952b188c086813848d43f45816f6f723d304ae1e73946e46fc0f7

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 12:49

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General

Target

2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
Size

645KB
MD5

2f06747e82d7fa6d53e9fa725a7987d1
SHA1

b6479815b8d87958da3e0a2c976ba941527b207a
SHA256

60732f115f3952b188c086813848d43f45816f6f723d304ae1e73946e46fc0f7
SHA512

c1985676eedbb54a523a7a684e6a38893685bb7156c5d914c6a273927bbb3d98c4870bad8945f2582435d8769023265c7c7efdc31e49c6b745041bcfd4c77f76
SSDEEP

12288:xC0OAypnqVO2Bq/SKsGRC60ta1DJWr9BbC7JJyLUWg:DOAOYBq/ds2d0ta1DJQgJcE

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3036	CTS.exe
2216	YokpOfOHYdVJ6l6.exe
1208	Process not Found

Loads dropped DLL 3 IoCs

pid	Process
2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
1208	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"	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_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	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
Token: SeDebugPrivilege	3036	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2216	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	28
PID 2204 wrote to memory of 2216	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	28
PID 2204 wrote to memory of 2216	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	28
PID 2204 wrote to memory of 2216	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	28
PID 2204 wrote to memory of 3036	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	29
PID 2204 wrote to memory of 3036	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	29
PID 2204 wrote to memory of 3036	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	29
PID 2204 wrote to memory of 3036	2204	2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_2f06747e82d7fa6d53e9fa725a7987d1_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:2204
- C:\Users\Admin\AppData\Local\Temp\YokpOfOHYdVJ6l6.exe
  C:\Users\Admin\AppData\Local\Temp\YokpOfOHYdVJ6l6.exe
  2⤵
  - Executes dropped EXE
  PID:2216
- 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:3036

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\YokpOfOHYdVJ6l6.exe

Filesize
574KB

MD5
6503efe0a01c2d50c97be27f3cb10a43

SHA1
a0cb3708603a18f02352d01ec672020e5bad5073

SHA256
0cf9864ae3a8679ed503f954a453452c93fa44f99ca6f39bbc5860abde7fd35e

SHA512
ebdbc553ba4348676fd3f2ca12e48af53a229b449a36e653dbfca90efb34d21033e41d1157dcca28c2b1e5f91368c0839298992247cf7d2e8feca5feab8ecea4

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads