2be84db3a1d3d9e82c96a16c57fa6caa825dca519ef347be8627f864aa8de073

Analysis

max time kernel
93s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:25

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General

Target

2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
Size

71KB
MD5

23ae61343a6c0414f8649b8fb4ddcfe6
SHA1

9633159892df49a93fedc063d452ce43a474d835
SHA256

2be84db3a1d3d9e82c96a16c57fa6caa825dca519ef347be8627f864aa8de073
SHA512

ab9a80d0ba2a1e50d44e52eedd6facbb635d48e7152a5fbc7f94cf738f2def282e9b04715ae26cab69c4c68eae44862c6d9f71932b1d7c9c2a79c46207b82ad3
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTE:ZhpAyazIlyazTE

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

4712 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
4712	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_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:

2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2936 2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
Token: SeDebugPrivilege 4712 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2936	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
Token: SeDebugPrivilege	4712	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe

description	pid	process	target process
PID 2936 wrote to memory of 4712	2936	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe	CTS.exe
PID 2936 wrote to memory of 4712	2936	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe	CTS.exe
PID 2936 wrote to memory of 4712	2936	2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_23ae61343a6c0414f8649b8fb4ddcfe6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936

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:4712

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
394KB

MD5
15ff07f55267527b4737ab4439949fae

SHA1
aebaef68fe99439bf6f3d36853745208b01fc6ba

SHA256
370cbaef571ba17223b68ba8a7e0c8f686065c94078adcd300d39f6f4382d6b2

SHA512
ea3e060074af57ec97114afba4ee39591305762a7c56e66273488d472cb9bef0a4768f2d155120a22fd7a947072222ac6f01fe249b32442f41d40aedb7129f01

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C:\Users\Admin\AppData\Local\Temp\IhRgpT5yQdenqgr.exe
Filesize
71KB

MD5
958369dee4d33bcf644041fa7488da66

SHA1
a5af5ffe498dfb138dfe311b6a5c6f7e26a35886

SHA256
75d981d6e602c824c323bf9f2510028d68e6a1871c2b9e05312e077c58b337b4

SHA512
8334f8c55e41f28eefa4d6dcb994c0af6e43b9843e7c9ea7bd730743bb8d966a1237cb2ce6000e6dedf985ea63f95d83e5c8c34c62c4683278f943fbea3a5d52

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit