be8db26f3ac26a040e2d5220cc6b05c1d47092c93dff897a66876409aa428be4

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 18:09

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General

Target

2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe
Size

71KB
MD5

48692719e759974d2b95459f80a96a31
SHA1

026f285005c0c1c19907b2398f80514bf8d7e206
SHA256

be8db26f3ac26a040e2d5220cc6b05c1d47092c93dff897a66876409aa428be4
SHA512

17b62f8f7c62b9277f5ffac4260eaf66f92dde15b1290ed62ff930b2b65713f310f250fe06664b816db1f1496c48e96bc77875a5dab7e939e5897de37db83472
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTN:ZRpAyazIliazTN

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2260	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"	2024-04-27_48692719e759974d2b95459f80a96a31_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	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe
Token: SeDebugPrivilege	2260	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2260	3036	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe	28
PID 3036 wrote to memory of 2260	3036	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe	28
PID 3036 wrote to memory of 2260	3036	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe	28
PID 3036 wrote to memory of 2260	3036	2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_48692719e759974d2b95459f80a96a31_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3036
- 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:2260

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\VlWvpRIBKIEhMCw.exe

Filesize
71KB

MD5
13e1f7b0c07375936eff75e55d389e41

SHA1
755791c336174a2b18286cf867a45ec46472511b

SHA256
f89f6da70153f13964619410a209bf7b44af1811bbd2e911b1a43f558a0b5a89

SHA512
bc2f68527a7428fbcfd1de08305eaa71f968e1a6e6b96132802c5768c14e9cbe18bb641772cf0101b2c888ab9be2eba9af86c6c26d592f358d4405dc75531149

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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