496c0be77aef769d304b3e55f08b27edd62462f6f0ff7588e9c9df0fb3ebe1e0

Analysis

max time kernel
93s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 15:24

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General

Target

2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
Size

96KB
MD5

62d4f848dea6781a7a6648839773e367
SHA1

41634f2e92f0dd4680730047a73fcd3a7021290a
SHA256

496c0be77aef769d304b3e55f08b27edd62462f6f0ff7588e9c9df0fb3ebe1e0
SHA512

e145d8ffd37e1d8ac5ccc292d4f03ee409ac2e91af9868b552c47241707359d0ed8aac06d8e785c0d69bdf39036c6df7fc66dd06d47598f2c1b3aac66e0d8899
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT1B+Q0e+BJWSX+vFotwhPAFyTr/:ZRpAyazIliazTGQJ+eS4FotwhyyP/

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

gdAB6nTYspBwvdL.exeCTS.exe

pid process

1468 gdAB6nTYspBwvdL.exe
1452 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
1468	gdAB6nTYspBwvdL.exe
1452	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_62d4f848dea6781a7a6648839773e367_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_62d4f848dea6781a7a6648839773e367_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_62d4f848dea6781a7a6648839773e367_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1412 2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
Token: SeDebugPrivilege 1452 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
Token: SeDebugPrivilege	1452	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe

description	pid	process	target process
PID 1412 wrote to memory of 1468	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe	gdAB6nTYspBwvdL.exe
PID 1412 wrote to memory of 1468	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe	gdAB6nTYspBwvdL.exe
PID 1412 wrote to memory of 1452	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe	CTS.exe
PID 1412 wrote to memory of 1452	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe	CTS.exe
PID 1412 wrote to memory of 1452	1412	2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_62d4f848dea6781a7a6648839773e367_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1412

C:\Users\Admin\AppData\Local\Temp\gdAB6nTYspBwvdL.exe
C:\Users\Admin\AppData\Local\Temp\gdAB6nTYspBwvdL.exe
2⤵
- Executes dropped EXE
PID:1468

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:1452

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
54e36990f733c324df59efc2806325cb

SHA1
9db6ed62d8cd536eb697200feb9e0a90c3a8d1e2

SHA256
fa3667ae023f4a5676ce02752c40047098633c5eae78b47483748ffb2a182478

SHA512
b9b0b424b30932fe32d20c88fe3d30fc70c8181a876490ffbd0cfb4466aa00055172c1c34d01581ea5d1e2f8e50c5ebed8fcd03ec55bf8a880adf83bfb6d4595

Download Submit
C:\Users\Admin\AppData\Local\Temp\gdAB6nTYspBwvdL.exe
Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/1468-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download