ac1c04afa2cf9757f17b8ae0180d78c0ce079c7c4424574b8c9cf34ab1917d18

Analysis

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

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
30-04-2024 22:23

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General

Target

2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
Size

71KB
MD5

0dc25a50628cc1cb0367237388d2184f
SHA1

b4f3fd6dfad94198e78dbe1d306d958b8afb7d9a
SHA256

ac1c04afa2cf9757f17b8ae0180d78c0ce079c7c4424574b8c9cf34ab1917d18
SHA512

aad776888d3894e572e67e9b6386f8bf53b4b7e8c1dce3d8d820d780f44a98076b190bc28e63701790120a71ebc3fd045e6aa2144deedec9128b98f65643e53e
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTk:ZhpAyazIlyazTk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
884	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"	2024-04-30_0dc25a50628cc1cb0367237388d2184f_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	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3020	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
Token: SeDebugPrivilege	884	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 884	3020	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	28
PID 3020 wrote to memory of 884	3020	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	28
PID 3020 wrote to memory of 884	3020	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	28
PID 3020 wrote to memory of 884	3020	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3020
- 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:884

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\vZKicB7PdkES7J6.exe

Filesize
71KB

MD5
389eba99c3dd6fae971ee146c032dcee

SHA1
a667b7c9cfc7860a28e48734d9d3a77d993a97c4

SHA256
ae38d7c66cef3c73d176756645f741e60adaa0ba61eb2d710adecbc3cbbd534a

SHA512
92d711399514aa8375978fc1d3947bcb3492938e3ccbd910ef6827aa7974099138025858d086b55d3fbf0e54ee17fd794cd7646089dc4788ffdc22b30ab7e08e

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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