bb8f61ccbaca7b3464aaa5326e3744391c509371591c194590693116a5bf8e26

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
06/07/2024, 03:24

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General

Target

2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe
Size

71KB
MD5

080ec3c65fd2d38cc58614900d988dae
SHA1

a4743490773799702142f2c127fad79c80370cd8
SHA256

bb8f61ccbaca7b3464aaa5326e3744391c509371591c194590693116a5bf8e26
SHA512

b9785ef2a9a016f420abf8a452a9ad157921bdbec74b3d23d985286692061dd2520790640acf10199766963db2dc12b1d10c4d660959a723477b223f90423a26
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTjN:ZRpAyazIliazTjN

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3064	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"	2024-07-06_080ec3c65fd2d38cc58614900d988dae_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	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe
Token: SeDebugPrivilege	3064	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 3064	3044	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe	30
PID 3044 wrote to memory of 3064	3044	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe	30
PID 3044 wrote to memory of 3064	3044	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe	30
PID 3044 wrote to memory of 3064	3044	2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-06_080ec3c65fd2d38cc58614900d988dae_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- 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:3064

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\WvmOiV1dp03lnRu.exe

Filesize
71KB

MD5
bd6397406ee8616e6587aa8d423445ea

SHA1
e20461fe170eb8a4a7a676e224e93f14d555cd0d

SHA256
14a076ccfb056b2822302a075d3ad5b1c9cc4daa946b84d34dae95ff7f7fedeb

SHA512
dcb61c09283e3ee125f79738332d8c764cc762abc75c4082dfb8ba3925046f90a04829f704048bbb2a1c17be4aca8f2447f7732d6e85b45d2f1bd8dbc9c54973

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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