4ff9ec4f05c9f69abd24e4a262fd47575b45f329cadf69295bc1a22a11cebfb2

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-05-2024 09:36

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General

Target

2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe
Size

96KB
MD5

b9cbf396b5b2bec35c8c263ce308347b
SHA1

feb97af72f1fe5266c7c898c21723cb16bf07d07
SHA256

4ff9ec4f05c9f69abd24e4a262fd47575b45f329cadf69295bc1a22a11cebfb2
SHA512

ac1fb80dc4b69e646277f334bec83102d3b978422d57f52d35d037830e0a0e8ca93d7285c9fe722afcc5d555faafadad718c43f847bc28d99252b7d1a62e0627
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT8vGjQ8/KAFFhj9C4D6:ZRpAyazIliazTwGj3KA3hjLe

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2216	asQi6dKiQTi7f6i.exe
4616	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"	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_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	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe
Token: SeDebugPrivilege	4616	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 2216	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe	81
PID 4708 wrote to memory of 2216	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe	81
PID 4708 wrote to memory of 4616	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe	82
PID 4708 wrote to memory of 4616	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe	82
PID 4708 wrote to memory of 4616	4708	2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_b9cbf396b5b2bec35c8c263ce308347b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Users\Admin\AppData\Local\Temp\asQi6dKiQTi7f6i.exe
  C:\Users\Admin\AppData\Local\Temp\asQi6dKiQTi7f6i.exe
  2⤵
  - Executes dropped EXE
  PID:2216
- 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:4616

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
392KB

MD5
fc9d51ae4f3817f115b6578a613c9a30

SHA1
66db6f94fa2b4020415cb0e1d95241825f27540e

SHA256
10d07b5231ea8c2f3c28f4296237cb734f379c344337520ce5a9094140a3cbba

SHA512
67315d0da54e760e4e33369424c866e2ee2743666c8458ecde84607e21ddf94cbaa94867ec43733a202805e4ec7815ce7e69751428837ed3d0898fa97a9da642

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C:\Users\Admin\AppData\Local\Temp\asQi6dKiQTi7f6i.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/2216-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads