13080d71b3757c8002669117109427a78adf9889fa179ef20b744347cec9c448

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
24-05-2024 14:54

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General

Target

2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe
Size

172KB
MD5

7164c9b010cb75651d29213dd6eb3d85
SHA1

2d059f6f826dc0fbdb2cc0169841e01e9be80f60
SHA256

13080d71b3757c8002669117109427a78adf9889fa179ef20b744347cec9c448
SHA512

49910522201e137ba9b5468c2f747b0813c1d0667ed8e35e6688abbd16b56e8ad89d823524b01531d829c9f73942206c625c0dab97631ace5717902c33c4d8a3
SSDEEP

3072:ZRpAyazIliazTQ2ftYQ1zpYigpduILv9KAA1IwPmNY6iq:xZ8azt7AjkAA1HcY6n

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

wosV2lRdkhou8jx.exeCTS.exe

pid process

3876 wosV2lRdkhou8jx.exe
3076 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
3876	wosV2lRdkhou8jx.exe
3076	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_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.exe2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe

description ioc process

File created C:\Windows\CTS.exe CTS.exe
File created C:\Windows\CTS.exe 2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2216 2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe
Token: SeDebugPrivilege 3076 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe

description	pid	process
Token: SeDebugPrivilege	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe
Token: SeDebugPrivilege	3076	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe

description	pid	process	target process
PID 2216 wrote to memory of 3876	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe	wosV2lRdkhou8jx.exe
PID 2216 wrote to memory of 3876	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe	wosV2lRdkhou8jx.exe
PID 2216 wrote to memory of 3076	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe	CTS.exe
PID 2216 wrote to memory of 3076	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe	CTS.exe
PID 2216 wrote to memory of 3076	2216	2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_7164c9b010cb75651d29213dd6eb3d85_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2216

C:\Users\Admin\AppData\Local\Temp\wosV2lRdkhou8jx.exe
C:\Users\Admin\AppData\Local\Temp\wosV2lRdkhou8jx.exe
2⤵
- Executes dropped EXE
PID:3876

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:3076

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
9bd3406487b9e31bfb9f7728f10eb7db

SHA1
fb3c37d56d04dab228832965993ac8bfccc3ee0d

SHA256
3f4cadcb841cd9b84ff0f9d3bb78aafd3761dd739e34a70fdc5205b6b6662c9f

SHA512
1a6d6c141531eac0bd11a4e0fadd17f776e9f643d3183fd2ef1250b0a732c59949aecb225e909a10033c29643d2a9a8f77992efe63796a54a083e7e3733d4f8e

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C:\Users\Admin\AppData\Local\Temp\wosV2lRdkhou8jx.exe
Filesize
172KB

MD5
4ced005119904c69d5544db232ab67f8

SHA1
b49762f8f3d2ee46c3b5f63c594947e8cc460780

SHA256
957441d44034db08224fb563841236c1124a6a65c12219e147be19312f8913e7

SHA512
6dde02cd99525af14ee551af405c33bfb066b70f620ccbfc9a9ab8d8cc390fe2efbd03767153d49bc04e4267c4ef3751a8e4f56a241f5585ab2dde4afe9ed2ec

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C:\Users\Admin\AppData\Local\Temp\wosV2lRdkhou8jx.exe
Filesize
100KB

MD5
db697c943fcb215f757f9c22c907c568

SHA1
c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7

SHA256
07c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9

SHA512
bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit