d1ff51ba0d9a40dadc4f5501f39a5d0641c0fccab4d80bd0120a27e3b9915b3d

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
10/06/2024, 02:59

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General

Target

2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
Size

73KB
MD5

98668c1277c5cbe8f48d91d6904e836d
SHA1

f0bf7858f4b22d79649c6eb4126498ed041324c4
SHA256

d1ff51ba0d9a40dadc4f5501f39a5d0641c0fccab4d80bd0120a27e3b9915b3d
SHA512

513cbaabf07af2653d158843dae67d48fab4c779fecd92d07bdde2ca960535b8ff887f823aeffc6d226c92a17a06e406cab76814755bde7fa2e6b8d9d3c470f8
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT+5:ZRpAyazIliazT+5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2180	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"	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_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	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1276	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
Token: SeDebugPrivilege	2180	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 2180	1276	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	28
PID 1276 wrote to memory of 2180	1276	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	28
PID 1276 wrote to memory of 2180	1276	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	28
PID 1276 wrote to memory of 2180	1276	2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98668c1277c5cbe8f48d91d6904e836d_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276
- 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:2180

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\gGxhMorRgzWuRpN.exe

Filesize
73KB

MD5
8308964d4eedef0d8ef8c77497a98738

SHA1
f64625ae3d301ca8ebd9642e1c43e437350d58ed

SHA256
2749dad84f23d34c26509cd4b63ab7c07fe77c6376e5dc65b5a0541744b1d782

SHA512
9975b159a1eb8c5bf52ec85a7beb4fab8b45901512682a5fe327960d6ea8005dbdb990d01a818e8e5350b7ba462289d52b67860d33e57f019913e6619e5a331c

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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