3bf46103a7fffa809235aa999a497c12c11f0b198237216999198c13743c4efd

Analysis

max time kernel
55s
max time network
44s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 02:25

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General

Target

2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe
Size

96KB
MD5

4c7d38c93eb3c020d71179e181754db2
SHA1

b5eba26d8a8b5f94deb16e01cb593860e3fac1b1
SHA256

3bf46103a7fffa809235aa999a497c12c11f0b198237216999198c13743c4efd
SHA512

56d1e429f8a982910b519bfd758b9fea1aa2fc9230208518dde949e2d3cd4dcbe78830869ed5558eb2cc69ab30325104b6ad992c52dd21ae06da59f886c39603
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT3lEFGg3YZSCCbVa:ZRpAyazIliazTVEFGgoZfCbQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
932	xMu4oNIgGBQQUDm.exe
4592	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"	2024-04-27_4c7d38c93eb3c020d71179e181754db2_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	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe
Token: SeDebugPrivilege	4592	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 932	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe	85
PID 1576 wrote to memory of 932	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe	85
PID 1576 wrote to memory of 4592	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe	87
PID 1576 wrote to memory of 4592	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe	87
PID 1576 wrote to memory of 4592	1576	2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-27_4c7d38c93eb3c020d71179e181754db2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_4c7d38c93eb3c020d71179e181754db2_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\xMu4oNIgGBQQUDm.exe
  C:\Users\Admin\AppData\Local\Temp\xMu4oNIgGBQQUDm.exe
  2⤵
  - Executes dropped EXE
  PID:932
- 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:4592

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
395KB

MD5
4afc3f86653225d5b80a771acaded4a0

SHA1
ca46447164bff29594494dec898741a95c6b27bc

SHA256
068e86044595ec6e334daf648acc802e6d8e8586cab6131154bb362c4441b79d

SHA512
0b6df954e0ef0a79636a17e5aff984c9aa84b0ed9026ca54d9ba763005b9241e5cb5b3e8926e601aff8dcaa91e44f10f88089232782e742a4575843009f4a56d

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C:\Users\Admin\AppData\Local\Temp\xMu4oNIgGBQQUDm.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/932-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads