ba415b4ebcb0b5a592c2ecbbf95765e54c32fa20b6617595adb294e3b40a6324

Analysis

max time kernel
135s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 14:46

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General

Target

2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
Size

71KB
MD5

2a63f576879a9738b176b5036b73c2a3
SHA1

4446063948b99f1e43407707b9989c8b2ae021fc
SHA256

ba415b4ebcb0b5a592c2ecbbf95765e54c32fa20b6617595adb294e3b40a6324
SHA512

fde8cc2db4bdd4df7e13331dbb603fb4aca5760d3684ca51baa1924053980b991dd17529685d28afcd3def2fbcc2577ca695e76eaddcd06bdf8309a6ab439d21
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT1:ZRpAyazIliazT1

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1604 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
1604	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_2a63f576879a9738b176b5036b73c2a3_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

Processes:

2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4560 2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
Token: SeDebugPrivilege 1604 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4560	2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
Token: SeDebugPrivilege	1604	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe

description	pid	process	target process
PID 4560 wrote to memory of 1604	4560	2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe	CTS.exe
PID 4560 wrote to memory of 1604	4560	2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe	CTS.exe
PID 4560 wrote to memory of 1604	4560	2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_2a63f576879a9738b176b5036b73c2a3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4560

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:1604

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\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
789KB

MD5
94fc983527c1f67eadf63485ca0005c6

SHA1
f4ea53b0ee270a5767d9b5e70517b3241c533a17

SHA256
4f6bc97d5e74e4257828655455909c64e2c2dabf73bb713a1abb1e5bec8bfc1f

SHA512
2d59b7cae4f98c2dd6b7fd18705a439d5ce12a4abb0a10d6116e46d86095873cd03fe19c04d30c3a695c83745bc72cff2c90a83bfe7d0885791e5c072511aae0

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C:\Users\Admin\AppData\Local\Temp\gMgTpms4KHoEJ1Y.exe
Filesize
71KB

MD5
3e0c0479c2e405f34b41ab336a7bcced

SHA1
d012d7f9f0431dfc9c7c86ca573ac7e5a6624364

SHA256
3f0ea4e2ab4cd858cdc1921c4bc1e9be5db2d3fb3bf6c07465e072c115eba9b8

SHA512
5837a067badb3cdb170d7f3930abf3f05092b245eaf9d7df2dab381c83a985a6745e8424ef8052d9d278610bd9779e31d6460e15600d42b5a10d6be27384b563

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit