0e00fa6535dd372466e2be6928fb7355c23017de4bbd9be68f35ed2cfdaaf6a5

Analysis

max time kernel
91s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 05:28

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General

Target

2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe
Size

96KB
MD5

51d76c75912a78bbd58ba63dbe3a2fb2
SHA1

1d42abe4c11b46a65883fdf0cc525dcfd0b08cd4
SHA256

0e00fa6535dd372466e2be6928fb7355c23017de4bbd9be68f35ed2cfdaaf6a5
SHA512

7350ca9262365f9d9ad5257ef74a1021af16c5ec460b39159a73d144cacf5af26d49a145e98c513bd87147cd097c95c59fa08bfe7f663d46cadc5f9026e378fb
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTM183ZBJFDMlr2Q3pA:ZRpAyazIliazTu83/JFyCl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2604	Pm9AIfnSKAX83nf.exe
4712	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"	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_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	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe
Token: SeDebugPrivilege	4712	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 2604	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe	84
PID 1572 wrote to memory of 2604	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe	84
PID 1572 wrote to memory of 4712	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe	86
PID 1572 wrote to memory of 4712	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe	86
PID 1572 wrote to memory of 4712	1572	2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_51d76c75912a78bbd58ba63dbe3a2fb2_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Users\Admin\AppData\Local\Temp\Pm9AIfnSKAX83nf.exe
  C:\Users\Admin\AppData\Local\Temp\Pm9AIfnSKAX83nf.exe
  2⤵
  - Executes dropped EXE
  PID:2604
- 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:4712

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
394KB

MD5
ee0e8b15ffc4d063ef911f8b6d96d555

SHA1
d76083c11b28a57be7e664afd709e787d0f04a3c

SHA256
8c1b11b224f2c5691e5d5c5d51dfed6dbe61a05ae46b3edf969e6de7107ec2da

SHA512
8c8358a397711d8465a0f4eecf5410c6e1d38c9feaccdbbf47be6b232a4c7f089c1fb1a39ba914eddb978498f460ea87ac4a85a4cd463a83ebc0a107e842797b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Pm9AIfnSKAX83nf.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/2604-9-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads