eaefd3356c892a61ae6799fd5872ff3c3194a9027850839c6b2500219a081a01

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 13:21

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General

Target

2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
Size

71KB
MD5

9d15d580104b23605a527e793115eaf2
SHA1

1d48c6441d3629a18c806247763db8b6c7ce4360
SHA256

eaefd3356c892a61ae6799fd5872ff3c3194a9027850839c6b2500219a081a01
SHA512

f74425dd1ab38e183737a229ae2617701a9bdc1ffc66386f1458428a5864d96f16926e366692fa3473a3e9b5316fb26fbf944ebf1bb233110f071b9047bd17f3
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

836 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
836	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_9d15d580104b23605a527e793115eaf2_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_9d15d580104b23605a527e793115eaf2_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_9d15d580104b23605a527e793115eaf2_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2192 2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
Token: SeDebugPrivilege 836 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2192	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
Token: SeDebugPrivilege	836	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe

description	pid	process	target process
PID 2192 wrote to memory of 836	2192	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe	CTS.exe
PID 2192 wrote to memory of 836	2192	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe	CTS.exe
PID 2192 wrote to memory of 836	2192	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe	CTS.exe
PID 2192 wrote to memory of 836	2192	2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_9d15d580104b23605a527e793115eaf2_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192
- 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:836

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\ppXDIiJs99pixlu.exe

Filesize
71KB

MD5
ddd3135770029f85a8d03401f8552106

SHA1
028fbfc617a2cdb35012c576ed0ed8eb4217473f

SHA256
2271175a5e3fcb275dc136423f27d6f0e0cac3f735d4188a3a7ef3f765787ffb

SHA512
73b27cde7758b06c8b1c45a5772ae6a4523610cb4f6b3de089003df51625a60e5479d2d7325654a42961dc2fd096ef001cb3871bd60ad0ad5b0d547df188b966

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit