6610041047c477586cb56121a149f7e68a9173b488b6025dec4962612b1006c0

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 03:47

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General

Target

2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
Size

71KB
MD5

a330e42f43eefe1d03492389b47289dc
SHA1

799cd9ecee56a15b763fd4ad4f27950d3615d3e9
SHA256

6610041047c477586cb56121a149f7e68a9173b488b6025dec4962612b1006c0
SHA512

8b9bd4caa4170036f4bac5e96e023d9b8dadf3f2f9523f439ded156f9c8e19c39da5196911c9f69fe1acbe8222d5a8bdc8afb52d6dec5d169cf583c63eaa5116
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTo:ZhpAyazIlyazTo

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2228 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
2228	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_a330e42f43eefe1d03492389b47289dc_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:

2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1508 2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
Token: SeDebugPrivilege 2228 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1508	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
Token: SeDebugPrivilege	2228	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe

description	pid	process	target process
PID 1508 wrote to memory of 2228	1508	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe	CTS.exe
PID 1508 wrote to memory of 2228	1508	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe	CTS.exe
PID 1508 wrote to memory of 2228	1508	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe	CTS.exe
PID 1508 wrote to memory of 2228	1508	2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_a330e42f43eefe1d03492389b47289dc_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508

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:2228

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\Temp\Uuz416S3xWm0bDJ.exe
Filesize
71KB

MD5
74eece24951c2ad0d84de44f7539ca4f

SHA1
7c198c502c76f24a8f7e0dea9b241b6f855c5738

SHA256
55db065c7314b8912cff3e6bd65c663dc1d19dd51345e969407a6d0ae48718c3

SHA512
408613b55fbc39a8e2a38560011285314b0edcd2417f32c4d3393ff2f197b7f0bceafe5beacca9ce08131093970f57ae4dc10b6d7bb725f5e1bbbbf46c472f27

Download Submit
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