fce5db675076ac0e33f6032a467cb7316a4eda7fcfecc7bd32f8c7fe06bc3484

Analysis

max time kernel
133s
max time network
133s
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, 07:35

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe
Size

96KB
MD5

52e236743442a74fb627f8ec568109b1
SHA1

2d9486d8b6ccabe5d53ae898b18caffebbb794b2
SHA256

fce5db675076ac0e33f6032a467cb7316a4eda7fcfecc7bd32f8c7fe06bc3484
SHA512

f8c1fecfdf690dbe366b6b0335e4d56340a00f6471fe84ca839d8abdffde4202065f0e62467ce3cea54e1298139b787f64436c84b48bf811f9d3806057bf7912
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTl1tQKcomYZ4M:ZRpAyazIliazTmJAx

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4464	XuAw2M6kqppchHx.exe
3820	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_52e236743442a74fb627f8ec568109b1_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_52e236743442a74fb627f8ec568109b1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe
Token: SeDebugPrivilege	3820	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 4464	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe	90
PID 1924 wrote to memory of 4464	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe	90
PID 1924 wrote to memory of 3820	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe	91
PID 1924 wrote to memory of 3820	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe	91
PID 1924 wrote to memory of 3820	1924	2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_52e236743442a74fb627f8ec568109b1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\XuAw2M6kqppchHx.exe
  C:\Users\Admin\AppData\Local\Temp\XuAw2M6kqppchHx.exe
  2⤵
  - Executes dropped EXE
  PID:4464
- 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:3820

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4204,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3468 /prefetch:8
1⤵
PID:4552

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

Loading Replay Monitor...

Downloads

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

Filesize
394KB

MD5
a9f343c2ffb4405b51f1680bebaa97a8

SHA1
7f28648e5eb63ccd4abe9bdaf1868dc68ba2a48c

SHA256
1ff6da7d63788312235922d06340590622da349ee660dc47c5d1b55ccfda39a5

SHA512
5cb9450e7909b6374f5eb698ecff5a42cba8f62d63cca102d2c210f2d6399217a6e7b540bd678678c8bac5a0e9201a4fec67e3aa6970ee831e6b883e87ae547e

Download Submit
C:\Users\Admin\AppData\Local\Temp\XuAw2M6kqppchHx.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/4464-14-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads