144ab5da928a6646416b733ffe2a7cbcb785f4643f7a34c0afc053889e5bb3b2

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 09:29

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General

Target

2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe
Size

159KB
MD5

2d1d803e83efcc9ba99379028831bf83
SHA1

1fcb636895b66e37132cc5afbb2856be8f3cfa6f
SHA256

144ab5da928a6646416b733ffe2a7cbcb785f4643f7a34c0afc053889e5bb3b2
SHA512

d361abcfe9a05ecc0ae17c1c0b84aa06925204590b6f1d4f8e282349548963f7b12f46595aee62e6ae57202616db1e8647848824ed4ab01315f951adb3d6060d
SSDEEP

3072:ZRpAyazIliazT4n4OQpVVOeaHM0+peSzUUDcpo8XM:xZ8azyLQ5wmFHDZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
876	P4ZGk0Cvpfo6MVh.exe
980	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"	2024-05-26_2d1d803e83efcc9ba99379028831bf83_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	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe
Token: SeDebugPrivilege	980	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 876	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	82
PID 1576 wrote to memory of 876	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	82
PID 1576 wrote to memory of 876	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	82
PID 1576 wrote to memory of 980	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	83
PID 1576 wrote to memory of 980	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	83
PID 1576 wrote to memory of 980	1576	2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_2d1d803e83efcc9ba99379028831bf83_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\P4ZGk0Cvpfo6MVh.exe
  C:\Users\Admin\AppData\Local\Temp\P4ZGk0Cvpfo6MVh.exe
  2⤵
  - Executes dropped EXE
  PID:876
- 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:980

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
393KB

MD5
89ca3862626991b9e19f67fb9450eb9e

SHA1
616d4c0259909920e6f206fe05c001ffd13df01c

SHA256
3ecbd2902d857c669fd9304d7fa7ae70a24d6c1e879e6305c76b388a99f6e809

SHA512
2149358d743b37fc56f551e6805336c580664b09dcec38301a08d040d53909864b481c87656459c3cbf31b31f766860a14e88b24a74df576eaacd60e2f702b21

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C:\Users\Admin\AppData\Local\Temp\P4ZGk0Cvpfo6MVh.exe

Filesize
88KB

MD5
4a895ec6c5a9df94820219ef525cf65a

SHA1
525dd15cdeec20966d61c5f0a81667cd931349cb

SHA256
949b6765d794c53656c9afc45b90d9a2cfcae6bb30444086b29225f19242217b

SHA512
a830996a8aae3d25bd21283f4f19ea295d6caa31ab98d14f5bacc15fee64264170348ca03c7bd390e6107274fb91923e24f4c6a6dca09a5354ae47d4109ed611

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads