2f468dfe35f0b134c7719cb5bc100733f5fe40ded98a3a1bc9a9207181e0cf35

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-05-2024 11:10

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General

Target

2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe
Size

71KB
MD5

fac880b17fecbaadf559ebcaac938998
SHA1

3319eb94f596f04d1126616c2614243d0959c3d1
SHA256

2f468dfe35f0b134c7719cb5bc100733f5fe40ded98a3a1bc9a9207181e0cf35
SHA512

11fcbc522a481e3d63d2e5c37545f7b82474ca55b409730031ed5ce7695cdc82adea467db7502cd1c8965a8c2f221a50e242a0f937dfb7d736d0f0af3671a4cd
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTp:ZRpAyazIliazTp

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
908	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe
Token: SeDebugPrivilege	908	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 908	2844	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe	28
PID 2844 wrote to memory of 908	2844	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe	28
PID 2844 wrote to memory of 908	2844	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe	28
PID 2844 wrote to memory of 908	2844	2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_fac880b17fecbaadf559ebcaac938998_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- 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:908

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\E59ZH2J2nVvw4Rv.exe

Filesize
71KB

MD5
ddc87f43a2a0716e782df609045fb065

SHA1
7ac9964c2be622f2d55832d83ae966619154831a

SHA256
477031699aebdbe9813c098c7db1eba1ca0ded48225458f8ffef7424b310413e

SHA512
0c6eb58cd306ed9a1b9a8124e4a12417ed2238d5af6c037b77f51acf3ee5e8e85b47f7621b570fb95169f97dff8828f65d5ee31c37dc09b2d1675b4732e5037c

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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