74075538a07b356a7c9a26cb16b4dfc7c48dade53f145f1c52dce2eef205eca8

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16-05-2024 03:49

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General

Target

2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe
Size

71KB
MD5

c6069b992643b2d0e52befbf12452fe1
SHA1

ff309b851f323d0056df826423cdb0440df26df1
SHA256

74075538a07b356a7c9a26cb16b4dfc7c48dade53f145f1c52dce2eef205eca8
SHA512

f115c995b59bcfd8535db69a3fe02701c6125d96ddf095516a70366329f785d5dc739ada831450d9f1b75f7052ffb00bb4a247fb738fe9d6100b8fd5cc1bc2c7
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTb:ZRpAyazIliazTb

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2128	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"	2024-05-16_c6069b992643b2d0e52befbf12452fe1_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	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1280	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe
Token: SeDebugPrivilege	2128	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 2128	1280	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe	28
PID 1280 wrote to memory of 2128	1280	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe	28
PID 1280 wrote to memory of 2128	1280	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe	28
PID 1280 wrote to memory of 2128	1280	2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_c6069b992643b2d0e52befbf12452fe1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1280
- 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:2128

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\ZcnYlyW31zBjUfj.exe

Filesize
71KB

MD5
3fee8db2114345b8d58a176a5fdccdc4

SHA1
6c4bc9d35473debb4c8729b753bdc4518de50a0c

SHA256
430925c63aeeb0bfdb21d3c408d924d8fa4622772eadb748a5390b41147f1182

SHA512
2f828639dac75ffcde3795b1486b28370a9437a6fed8e415a0ba7ee7f876daf025869546ed1770d729a3c8815b72a137aa8b9292b877d50b479ba6b66c0a1e16

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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

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Downloads