d27de414152b6a87190eb0331cef2a1156015c23367b659191f1eee24d4ce1e4

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
15-05-2024 02:38

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General

Target

2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe
Size

76KB
MD5

d7523bf10ae950b4150e727e9c2ba7cc
SHA1

ac69e2a4134614fb5ec0595589a6fc855c63fad6
SHA256

d27de414152b6a87190eb0331cef2a1156015c23367b659191f1eee24d4ce1e4
SHA512

54295847666ac80c30b56dc2b43abe8379b3fda48e449d612547eaf3b9c83001fa7c6027ea7c51bc59cb46f5449490383df747253b88f92d9ccb28d5fa24f243
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTAFn:ZRpAyazIliazTAFn

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2332	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"	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_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	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	992	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe
Token: SeDebugPrivilege	2332	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 2332	992	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe	28
PID 992 wrote to memory of 2332	992	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe	28
PID 992 wrote to memory of 2332	992	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe	28
PID 992 wrote to memory of 2332	992	2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_d7523bf10ae950b4150e727e9c2ba7cc_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992
- 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:2332

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\sOgL7e5cvSzqTdh.exe

Filesize
76KB

MD5
3568aeaa3c31ccfbd9c8f1a2fdf44607

SHA1
6eb9b1abb56a93e57d7df2dc9bfd930ed1a078bd

SHA256
9dde14d0fa6d1af4a653f4839aaa4ec628b93465f010daa8a1eeaaf4db2327e1

SHA512
ca60d4457729c8c7acf08f13627f1065abc3a584ed1f18c2bca4c22435994aba27f598a4b7d4eefdb7e7121a45de4652979c957da31b4fd0176717baa3108867

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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