36d2f9895856391de8233c99c1423150615c9599e65ac17f2c413b20d7642261

General

Target

2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
Size

96KB
MD5

13f2d4566e85fa27fe7ba72489372d98
SHA1

61a48041b730ded3f6f89866ba722e1025d2f914
SHA256

36d2f9895856391de8233c99c1423150615c9599e65ac17f2c413b20d7642261
SHA512

3cde615700c409291195d6118f5ae811d758e099f63985ad8a26866337c59c58839a1d4c4abb00b018681c2cc15d06a82cea3baf4092d5d695e34550edea4f53
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTez2sNIUU2tlyS8K2NRLB:ZRpAyazIliazTkjNJr8KGRl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

wadVJK5miCSH8fm.exeCTS.exe

pid process

2056 wadVJK5miCSH8fm.exe
2744 CTS.exe
Loads dropped DLL 3 IoCs

Processes:

2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe

pid process

1368 2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
1368 2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
1396
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
2056	wadVJK5miCSH8fm.exe
2744	CTS.exe

pid	process
1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
1396

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_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:

CTS.exe2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe

description ioc process

File created C:\Windows\CTS.exe CTS.exe
File created C:\Windows\CTS.exe 2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1368 2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
Token: SeDebugPrivilege 2744 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe

description	pid	process
Token: SeDebugPrivilege	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
Token: SeDebugPrivilege	2744	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe

description	pid	process	target process
PID 1368 wrote to memory of 2056	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	wadVJK5miCSH8fm.exe
PID 1368 wrote to memory of 2056	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	wadVJK5miCSH8fm.exe
PID 1368 wrote to memory of 2056	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	wadVJK5miCSH8fm.exe
PID 1368 wrote to memory of 2056	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	wadVJK5miCSH8fm.exe
PID 1368 wrote to memory of 2744	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	CTS.exe
PID 1368 wrote to memory of 2744	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	CTS.exe
PID 1368 wrote to memory of 2744	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	CTS.exe
PID 1368 wrote to memory of 2744	1368	2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_13f2d4566e85fa27fe7ba72489372d98_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368

C:\Users\Admin\AppData\Local\Temp\wadVJK5miCSH8fm.exe
C:\Users\Admin\AppData\Local\Temp\wadVJK5miCSH8fm.exe
2⤵
- Executes dropped EXE
PID:2056

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:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wadVJK5miCSH8fm.exe

Filesize
96KB

MD5
78e0048221d420e12ada9d4573cf16ba

SHA1
f0a66739d9685b038010a733d6aeede914038d26

SHA256
52523f6414223376249ac8a13fee2b4ee17a4ffe671e31b3dae96f23502eb05d

SHA512
009bd4275169a37b28661ee1eb7832e97bfe83d036a763963b0ce305221051e1efa58b3561f5d1a687c6557be1ff53c64deeb656feb6b9f792547c103338f134

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
\Users\Admin\AppData\Local\Temp\wadVJK5miCSH8fm.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
memory/2056-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads