72b9c995ece99c2f1d2327664ade881275c863c1125cea3312d706ea143062a7

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
05/05/2024, 04:41

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General

Target

2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe
Size

71KB
MD5

090e23a53b766958eb9f283932ea287a
SHA1

33ff8fa3608909ab1e24fb3c8edae34d65d766c7
SHA256

72b9c995ece99c2f1d2327664ade881275c863c1125cea3312d706ea143062a7
SHA512

ce2fe5370850af341fa523a8c7b51374655c49f101d7f74a0634e266039f87304bd87a809215e63a874e8518e7a1243460968e879d92318f681442f45f82767e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTU:ZRpAyazIliazTU

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1884	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"	2024-05-05_090e23a53b766958eb9f283932ea287a_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	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe
Token: SeDebugPrivilege	1884	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 1884	2268	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe	28
PID 2268 wrote to memory of 1884	2268	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe	28
PID 2268 wrote to memory of 1884	2268	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe	28
PID 2268 wrote to memory of 1884	2268	2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_090e23a53b766958eb9f283932ea287a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- 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:1884

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\SKgzzk2vDxkWWEA.exe

Filesize
71KB

MD5
2a7b146cedf8bf8d3edf529424761a82

SHA1
a156cf4f7a037eb245023aaf255814fa686a6318

SHA256
9c593a87e1f9d02f9bb93cb4a4439c3294f6e8110ff70f0f13981dc7ac834562

SHA512
6a3dcbb7b1cfb53649e5cc42729b8c2ee4f524003c3a7ffaaf8dc500dad2f68dd4e2827f76367d2c1fcf1541074f965da6d6808881059ce46b3b88a3d79a44f6

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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