d26c93dc23e24c91c89ad4ae89af091df37a33be8be81b4239b94847b86afeab

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 12:38

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General

Target

2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
Size

71KB
MD5

7597858998dc4ab96df11320c5ded836
SHA1

11a918ebd7001713372f38cff3cd4efb3f6fc556
SHA256

d26c93dc23e24c91c89ad4ae89af091df37a33be8be81b4239b94847b86afeab
SHA512

c39c7752873cf42d011cf481d93d1fe2da12dc7b20845c3ca924647cca3e8c0485009e9c45ef2391f2c434610a76be23d21dd64c0cc6c9177ee55bb7221a6e2c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT7:ZRpAyazIliazT7

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2552 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
2552	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_7597858998dc4ab96df11320c5ded836_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_7597858998dc4ab96df11320c5ded836_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_7597858998dc4ab96df11320c5ded836_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2748 2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
Token: SeDebugPrivilege 2552 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2748	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
Token: SeDebugPrivilege	2552	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe

description	pid	process	target process
PID 2748 wrote to memory of 2552	2748	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe	CTS.exe
PID 2748 wrote to memory of 2552	2748	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe	CTS.exe
PID 2748 wrote to memory of 2552	2748	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe	CTS.exe
PID 2748 wrote to memory of 2552	2748	2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_7597858998dc4ab96df11320c5ded836_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2748

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:2552

Network

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\bcenbgjlCMOL3la.exe

Filesize
71KB

MD5
523e4a98102293736f28614c93e31e0c

SHA1
71367a5ee00ed8ba84acb245ed76cea2d6df1d0a

SHA256
89dfd280d2bb81ceabd53654aec7661bb1b5e8dd093d02de81a2e1b9c0dd1849

SHA512
e855c996010bc575a2fbcb9ceb3396c37fcc94ca5467f8e63f7c4d7b47e133af74a63d14097eab252f643bc22065eab260518e332f6e744201d9acb47cc79349

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit