b40e1eff15d2ab11561886c473b582d71cbf1a7f3152c85b37ec7253ff284eef

Analysis

max time kernel
62s
max time network
53s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 14:53

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General

Target

2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
Size

71KB
MD5

d27380a4c574724ed03550134209a1c3
SHA1

c75df1cbb6c8ee70d0f56daebf1084044090ded9
SHA256

b40e1eff15d2ab11561886c473b582d71cbf1a7f3152c85b37ec7253ff284eef
SHA512

e77582f633be60c0facc2306adf52d1c161d513f24009ec02a86536713573b6f585a165648d4de88de612a2bf1094c3270e2e259456e39f7f2e6b7f225e3f11e
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTk:ZhpAyazIlyazTk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

3704 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
3704	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4376 2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
Token: SeDebugPrivilege 3704 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4376	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
Token: SeDebugPrivilege	3704	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe

description	pid	process	target process
PID 4376 wrote to memory of 3704	4376	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe	CTS.exe
PID 4376 wrote to memory of 3704	4376	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe	CTS.exe
PID 4376 wrote to memory of 3704	4376	2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_d27380a4c574724ed03550134209a1c3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4376

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:3704

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
393KB

MD5
b259d9b34c59d6932240dce8ccb244d8

SHA1
43edbf3cb11a0abc60eddf9db0ad4cc7765fe011

SHA256
1adf4c2abe86f02f7e872cf7c33ab8eb1430f2257bc71ca9c5ba8b6b41bbabf8

SHA512
9283f7a77da70ba96e2499ce75fa8adb7c25a7f498f6b018e47190bdcd0ce32b1327f0f8619ba9a5cd7fab6852cbd442ff0f9fd17f756021a71360ac2e30b820

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C:\Users\Admin\AppData\Local\Temp\Q5Tc4IPylTa4b70.exe
Filesize
71KB

MD5
ccc01c4163b32e289e75d9637badb7bb

SHA1
109045fb0f31c670045511bbe92919fab6d406c8

SHA256
abec72e0c27e77f32bd308a100ddf2deb8fcc810767bd577b3b94a779bae458a

SHA512
06df379e70eefacc62bc7478ce31578cab9af6e89eedd46ef8964018abf72ca197eaea8ed49d379235d1442701aea9f22e1385a22bc34b06501eac6daa78490f

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads