803823f9c11b508b839dd906ca03f59b5d361495a67c8074099846f2bc7539f8

Analysis

max time kernel
132s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 08:48

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General

Target

2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe
Size

71KB
MD5

76a3a45f7ab66676b9ea57b1e1a8f982
SHA1

c0d8b4a440c46b8de0ca4bed3a3349c478446efb
SHA256

803823f9c11b508b839dd906ca03f59b5d361495a67c8074099846f2bc7539f8
SHA512

ad2a8deec6e45db7b6c7566edbc064efbdf82b81953dde9d8b1eb67008365294010b336191fcc654a2b8f49134fae2ff628194f0bce9b71ce8aca3fea3aea608
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTC:ZhpAyazIlyazTC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4308	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"	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4036	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe
Token: SeDebugPrivilege	4308	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4036 wrote to memory of 4308	4036	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe	83
PID 4036 wrote to memory of 4308	4036	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe	83
PID 4036 wrote to memory of 4308	4036	2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-27_76a3a45f7ab66676b9ea57b1e1a8f982_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4036
- 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:4308

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
6715d3c390ab482e9faa072e4bd2c2d3

SHA1
0f4df6334193f3a304b499d1d16e0087a0993893

SHA256
6a502ede10a483ef51321283283434941f4f0f83c94f2af88635a718e8c77788

SHA512
60eb4f5933f7182aeb751e51c77aacf18cdaf3dab447370316b9c873c42ef9d566b6beabed980d13c7fb5444b35489513ddec685020b4e4caebe3d135d26c453

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C:\Users\Admin\AppData\Local\Temp\YLqf6g9i9S5uFiW.exe

Filesize
71KB

MD5
bdac98f19024a11fce069b039e7e4eb1

SHA1
0b4f4a8e4d485e2d35284efcc313aef9210ed438

SHA256
2219c9ae65c7de986701aa2acdf12418afe3b5a5c0a4f254677624e8d29d45b2

SHA512
5a4d08fd0784123fe58134b25c349cfaa7efe7e26f76cc4a3b0dd19b9d525116d0bf8685b66762cfadf5b228c02715a3cf3b0baa32903f5aeac8dc6a86ae2a0e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads