981e73dba02e81039a4e07689aa470dbcd64b39c12e28303506d90a5916769df

Analysis

max time kernel
130s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 19:34

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General

Target

2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe
Size

96KB
MD5

91eae8cae18292a3e1a03f5475a87022
SHA1

bb3e30e4dc07ee0b013514b483f103f8ee7b6ba6
SHA256

981e73dba02e81039a4e07689aa470dbcd64b39c12e28303506d90a5916769df
SHA512

5288abf039ee88726ae71991ce8e574d76478ee4a8c66409117620d615fa9c1219503b9e82dc85e6f78a4e3f8e3f31fdaf14f0b20858bfc6df8395098af3f4cc
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTAVaDKfgjo:ZRpAyazIliazTAufo

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2992	wdkQDE11O0PKDm3.exe
4816	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"	2024-05-23_91eae8cae18292a3e1a03f5475a87022_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	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe
Token: SeDebugPrivilege	4816	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 2992	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe	82
PID 4856 wrote to memory of 2992	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe	82
PID 4856 wrote to memory of 4816	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe	84
PID 4856 wrote to memory of 4816	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe	84
PID 4856 wrote to memory of 4816	4856	2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_91eae8cae18292a3e1a03f5475a87022_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\Temp\wdkQDE11O0PKDm3.exe
  C:\Users\Admin\AppData\Local\Temp\wdkQDE11O0PKDm3.exe
  2⤵
  - Executes dropped EXE
  PID:2992
- 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:4816

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
07a11c96810200d4699e060efed3f305

SHA1
66f7780576f5360cab93f7c76749824a8f5479f7

SHA256
13193896bc37cde32efc261fcd2d392680f7927aded7ea9d37dd1e79c658cfc1

SHA512
fa1328d4bc54d298561ded4e10c5c970c11de1adf5655096d301cfc74a2323254a6cf1998fdcde3b9b910c570f5be1065ea4648c1cb47bed37f240c6efe124a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\wdkQDE11O0PKDm3.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/2992-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads