0bbb1d121e265d97ee187ca24909c07a0325d54ad3d05733bac03f5143030ab9

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 12:06

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General

Target

2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe
Size

71KB
MD5

88a6743897dcd0d24ce5a2fa2bf4a1f8
SHA1

196b5622fd49da60aba6976ee7856c78a25381ad
SHA256

0bbb1d121e265d97ee187ca24909c07a0325d54ad3d05733bac03f5143030ab9
SHA512

86bcad350b1ac417532db15638e409455aadc38a6b5e96218da6edea830513903397cf0de04e1bf7a872eddb65aa97d2608a6e53fcb6e68dea9e7c9c57e6e441
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTy:ZhpAyazIlyazTy

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4660	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"	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_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	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe
Token: SeDebugPrivilege	4660	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 4660	2044	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe	81
PID 2044 wrote to memory of 4660	2044	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe	81
PID 2044 wrote to memory of 4660	2044	2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-24_88a6743897dcd0d24ce5a2fa2bf4a1f8_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044
- 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:4660

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
392KB

MD5
a1d3cf09a5e9106dc1c074f72f79689f

SHA1
9b519810f35dee42284ce4adf2e04ae8c55f4d32

SHA256
0ab54917e64521dc3ede3ce0e881bb65b9f7de1e7325635669f7c8da09fc6240

SHA512
79f2c89d0043c77ed2c3236101e8a36691576dc6b97f0fea8988fc3fa4a1b88f29836845e18187439dc2d1c398d3dbdc85b8d0db5f32a774cc6dd8c56d352a4b

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C:\Users\Admin\AppData\Local\Temp\UzrBxo4fb4iSOIV.exe

Filesize
71KB

MD5
11c1eedd11a52276cb7a3258f8e4cdcf

SHA1
31fd700a47fc11aabab4fbd07c523a4888fb8ea2

SHA256
bde0bf7868822ac383e810e0687a086b76cfd50dce175f4f23b735d0ae0526f7

SHA512
416c54d1afeb132d25b4bf2a7b159dc582abf6e547235597f076e6aaa8b5848817101ba82c1750bb5d367fa5e16edd0428c8d924cc35bd58c2ef0bc417ef668e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads