ea6f01132d75d8beea01ccd42ddf42501cff90c6f7db2e83526600d689e3c931

Analysis

max time kernel
133s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 06:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
Size

135KB
MD5

f81b59d631c1421ecbfa5d631a7dbedb
SHA1

02cb93d524caa36e45b65e6f7de29965cf8f194e
SHA256

ea6f01132d75d8beea01ccd42ddf42501cff90c6f7db2e83526600d689e3c931
SHA512

c360809d1e00b7391b68ba553ac877c2cdb49c661f1c02a4c259f988db0c66e4d887a1a3f7af78f77dcb94769c92f432abc072269a579891c452d8d959aefc3f
SSDEEP

3072:ZRpAyazIliazT9i+P+AupTruo7UnQKLbTRt:xZ8azpi+cxRU

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

PXIlzFeKZmjfxH3.exeCTS.exe

pid process

1348 PXIlzFeKZmjfxH3.exe
2924 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

pid	process
1348	PXIlzFeKZmjfxH3.exe
2924	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_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:

2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3652 2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
Token: SeDebugPrivilege 2924 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
Token: SeDebugPrivilege	2924	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe

description	pid	process	target process
PID 3652 wrote to memory of 1348	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	PXIlzFeKZmjfxH3.exe
PID 3652 wrote to memory of 1348	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	PXIlzFeKZmjfxH3.exe
PID 3652 wrote to memory of 1348	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	PXIlzFeKZmjfxH3.exe
PID 3652 wrote to memory of 2924	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	CTS.exe
PID 3652 wrote to memory of 2924	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	CTS.exe
PID 3652 wrote to memory of 2924	3652	2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_f81b59d631c1421ecbfa5d631a7dbedb_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652

C:\Users\Admin\AppData\Local\Temp\PXIlzFeKZmjfxH3.exe
C:\Users\Admin\AppData\Local\Temp\PXIlzFeKZmjfxH3.exe
2⤵
- Executes dropped EXE
PID:1348

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:2924

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
d42aca51afd0bcf4b35db2b856456e10

SHA1
f08a1f8aea437363709deeec93f2f45b77bdaa8d

SHA256
5afca557ce0cfc6dc879c6d6b9041399df69b1fd27d0f01451199c8bfb566ee5

SHA512
0ad6d3260adc5cac3c501bd67d27ff9df3c54eaa739ce6b4e5dab9b3102d5172f8ef7beb1d2f5af42c76d776dab665e46c3ed14f69815da70427da4290b6b656

Download Submit
C:\Users\Admin\AppData\Local\Temp\PXIlzFeKZmjfxH3.exe
Filesize
64KB

MD5
a32a382b8a5a906e03a83b4f3e5b7a9b

SHA1
11e2bdd0798761f93cce363329996af6c17ed796

SHA256
75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346

SHA512
ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit