9309290cf0052df727c23fc976ae8c4aedf7eceb7b6e4de838fedc5644a64547

Analysis

max time kernel
55s
max time network
55s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 03:55

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General

Target

2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
Size

73KB
MD5

e9e91989188ba82ad97e0ad179d76b34
SHA1

accfda1a73dbd60cfd8ffac20abf752d0659dd39
SHA256

9309290cf0052df727c23fc976ae8c4aedf7eceb7b6e4de838fedc5644a64547
SHA512

8348e3bb5383e8ecdbf021b34806fc95b439865ef79e1846e7c85965204bd771e7b7e3b86c20f0176b0c091148133a35a172a50407237b2d06ad1939f723961b
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTI:ZRpAyazIliazTI

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1396 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

pid	process
1396	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3928 2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
Token: SeDebugPrivilege 1396 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3928	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
Token: SeDebugPrivilege	1396	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe

description	pid	process	target process
PID 3928 wrote to memory of 1396	3928	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe	CTS.exe
PID 3928 wrote to memory of 1396	3928	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe	CTS.exe
PID 3928 wrote to memory of 1396	3928	2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_e9e91989188ba82ad97e0ad179d76b34_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3928

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:1396

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
392KB

MD5
9dd909f3428e152cf083c9756e6fba12

SHA1
32d4712484905b1b36a306ae020e88a8a6d1f774

SHA256
b82ac1aca33ab7394d984a739d351a7ceee684075caad720241ff1cb7bee7c44

SHA512
84d098a1b1e82c390613524910da1fd8b763c8e781d7feb6e7e48a4e9c5eb905336602e0f65b976c5406bb5fea09c664d879b352cd34cb88924296fcd971b68b

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C:\Users\Admin\AppData\Local\Temp\gsr2nxvOhP7i7MT.exe
Filesize
73KB

MD5
6b19d8ee547a0a1bdb87cbc3ebf46c27

SHA1
7ff30e3d505b782bb2ecc86777a548aac2743518

SHA256
5dd4ee991c9232373b96afbb103f7ff4d4fb5768275e6e4ea0d234b8a3aa426f

SHA512
babaa819364ff725e06ee3c0e2684df1c4baa5f73438699772fe2ef4f110516e461eaf3eb34ea85c306e2537ba3040cbfaef3022322dd0302004bb92ef2b8b80

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit