66e731571710c655025901c0db2d4d3d56d688942dbf49bdf482db3140b15f31

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26-05-2024 07:48

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General

Target

2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
Size

72KB
MD5

ee713c188e4d767c0c9544b3316017c6
SHA1

377a051cb315f5a800f5bbd0ca80b6fa2c807ac9
SHA256

66e731571710c655025901c0db2d4d3d56d688942dbf49bdf482db3140b15f31
SHA512

0cf0d4bf04134dc45a259d3b1b32c29c5dda60411ec7562ed87cc3a399b0140e9d9ac269622cadf91cfbf4c644271f96b563c6a2db1d788799a7a93f56f97600
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTpD:ZRpAyazIliazTd

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1980	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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-26_ee713c188e4d767c0c9544b3316017c6_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

description	ioc	Process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3292	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
Token: SeDebugPrivilege	1980	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3292 wrote to memory of 1980	3292	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	83
PID 3292 wrote to memory of 1980	3292	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	83
PID 3292 wrote to memory of 1980	3292	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3292
- 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:1980

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
28f44426f8ef872748d6dfa094c1f65b

SHA1
54a11ec8f592f3dd508053a2bd2f6b0b7d6bee31

SHA256
56a05146190ab7a40f7e80e2b9a55a2bd93f707282ad45182b1d8414a08e498b

SHA512
4171141784baa21723985e75fb58cf06540937b7a10267b006dfb5010b7cd9721338d4114d422c101865f82f834bc6e438b103ce7a58623eada623af0fb75bef

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C:\Users\Admin\AppData\Local\Temp\fjn7nHWzbRDkqCz.exe

Filesize
72KB

MD5
932813148e50205acb02f59181167072

SHA1
f89f2c3ade1dbfaccf48844434dc135ed7ff9c14

SHA256
b95d6d3fd645e1c8a6481e5b1daecc6a6e6b5b2fa5770042a2e4bec36c0532f2

SHA512
cf419757c5029e34c05c8f8dbb0ecab1a1f87b7fc2740de7e8a81c27856cbf1fccb529c9647fd44f79be5f54e58ea85504f094dde1c383598b2281796335ecd5

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads