dfd2e0919d79462e93090dfb113c340d165d779d8ce0b57776de27bf2f277957

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 14:48

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General

Target

2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe
Size

71KB
MD5

50932adfff32642e0376701938b83a91
SHA1

718585aeef0606a97eefa225803bc564d5c5f48e
SHA256

dfd2e0919d79462e93090dfb113c340d165d779d8ce0b57776de27bf2f277957
SHA512

d7924a6fee278faa646db81634d06a49c210f544967af479644e9c5e7e3894b4c7fc187bd935a79a7984354a0ccc0cc0556ff72c559697b6e8686979d5703953
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT1:ZRpAyazIliazT1

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2288	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"	2024-04-26_50932adfff32642e0376701938b83a91_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	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe
Token: SeDebugPrivilege	2288	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2288	2268	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe	28
PID 2268 wrote to memory of 2288	2268	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe	28
PID 2268 wrote to memory of 2288	2268	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe	28
PID 2268 wrote to memory of 2288	2268	2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_50932adfff32642e0376701938b83a91_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- 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:2288

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\bRrexauOM4JyAvY.exe

Filesize
71KB

MD5
943821303e43d7d68736de24349bcb0b

SHA1
848a79d747017b421827b9c46d74dfb4e30f9aa4

SHA256
f44782a8b67453637859f2efc6fe079a2440c089eb30e5024a84aa29f2444d26

SHA512
9d190b96dad0681eccfa24ae789b8763509fec7ecae174fe3e7ebe4f82a801364df9b0fd07fa286389f44a46d7e82620dd198d866c5f48fcd7d44bcde2720c06

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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