d753239707fff20d4c1bf5064ec609da05b83309c6fe786bbf4a1689fd2f48a8

Analysis

max time kernel
142s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 21:28

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General

Target

2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe
Size

71KB
MD5

6925ef604ada95b410d39b83d9329fc0
SHA1

e52ab12b8dc7aa66ba55e7bcf5e5b09f3ee74363
SHA256

d753239707fff20d4c1bf5064ec609da05b83309c6fe786bbf4a1689fd2f48a8
SHA512

7962af043e82334068ea17ed385d6b1f8936f4d7140998c3e4da3e10b671e0fb2a998b8be5e98ae6b989073492e24f4e522a8891c1c48642b4f0e3e114c33a5f
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTcX:ZhpAyazIlyazTK

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3812	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"	2024-05-10_6925ef604ada95b410d39b83d9329fc0_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	2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe
Token: SeDebugPrivilege	3812	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 3812	2548	2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe	90
PID 2548 wrote to memory of 3812	2548	2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe	90
PID 2548 wrote to memory of 3812	2548	2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_6925ef604ada95b410d39b83d9329fc0_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2548
- 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:3812

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4240 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:2660

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
789KB

MD5
b6853a6afe1071a17fbda223afa1f5b1

SHA1
291597f439783e6ee1db92cd9978e8110f3367c9

SHA256
71a2ff9ef6a075d9d24df20cdc81a0af8aa2e65f3462b699f067db2cbca8b14c

SHA512
147f337d15aeb9175b710a221a7d0e961f7fb5858d027f47e6700f9aacbff9738de1f8b835cc7436fbc863c7aba6093cfbf9d79b9a5bf15a056cdaf050a87e50

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

Filesize
71KB

MD5
82556c5d7ba6c1c95bf55eaf19f91047

SHA1
676561f0473c1fd7ee6e36b259970bc74a174524

SHA256
1db6ff6c8e227b9d0d759031791ff0810c7031af946432c1a2719e1fbaf1eea6

SHA512
2b3bd5bbe38b2db766da168f15669ece682d8e0c5c813c9d1da32f95bcefc64399ff46591fc1a60a54938d05dbd84f3a588ae6e05f99d0ec56d2c4ba00700406

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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

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Downloads