ee2c4a805831a5226ec25253f18d39de662a32863645fb0fe495fecf94b8a547

Analysis

max time kernel
148s
max time network
150s
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 14:25

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General

Target

2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe
Size

71KB
MD5

18035c50806a85bb1e000ed4fdaefc6c
SHA1

34d896903f8f0aa7793844015acee272023ac1b7
SHA256

ee2c4a805831a5226ec25253f18d39de662a32863645fb0fe495fecf94b8a547
SHA512

57b8cae08153a1ada8282849cff61676abcf4f97e1311bdc72be6f5fc895c08bc36a35ae5995a5f9c888266ed6f724c270c6aaafea554e6c3f51fcc9ce13d2d6
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

3036 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
3036	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_18035c50806a85bb1e000ed4fdaefc6c_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_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

CTS.exe2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe

description ioc process

File created C:\Windows\CTS.exe CTS.exe
File created C:\Windows\CTS.exe 2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 440 2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe
Token: SeDebugPrivilege 3036 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe

description	pid	process
Token: SeDebugPrivilege	440	2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe
Token: SeDebugPrivilege	3036	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe

description	pid	process	target process
PID 440 wrote to memory of 3036	440	2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe	CTS.exe
PID 440 wrote to memory of 3036	440	2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe	CTS.exe
PID 440 wrote to memory of 3036	440	2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_18035c50806a85bb1e000ed4fdaefc6c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:440

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:3036

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
392KB

MD5
f9c2a21541eab9c1a35d53854f7f849e

SHA1
1ce3a099d2ea9b568e1a5ff0aa6e935898921084

SHA256
bdcb30b9f6057d1a09f9f0e53a4714e3ca6c1c2c04e0caa31d25e512c173e8e8

SHA512
0b509d13bbe2e39c5f299bba10cadea29f368527e5ed8ab5ccd087538e0c8345bc48a87a280cf60db27495850e6b0a84cd45e19ca7f90126b4d3af67a04c2371

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C:\Users\Admin\AppData\Local\Temp\ogX4SRCt0TucmVi.exe
Filesize
71KB

MD5
2fcd092db2143f6e59ed496a6efdcb32

SHA1
a1a1840a04214a19b32a1a9dd0efc8b15a83c88e

SHA256
628e8f50d4afe63038d1b2a6cfd9b189aa9dfadc8dea3f4729238016b3cf00a6

SHA512
4d8711f7367fa562193c6303443b6162c8d9c0c2c073a5fa37c261c6aa157df7103471e35689fb09b5c57d85c304215ff9fae53c8554d62f3f510eae622ee2de

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

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads