bbeef9ffe514cd16a400dda06fa205fecebb5c8f285b0310c795a62eba5be8fd

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 09:04

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General

Target

2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe
Size

262KB
MD5

c20c4cb0f6ad63d8d683b50842045563
SHA1

358e89482a2018d1d62571bef117c8b3b677dc65
SHA256

bbeef9ffe514cd16a400dda06fa205fecebb5c8f285b0310c795a62eba5be8fd
SHA512

aea57c5c858714dcdc2879d81f009c8c6192034ba038afa07be3e1bff24422ed6fc5cecf557eef11c643727bd4f0b310223b6b35c708de5aefdebfc388f41ff0
SSDEEP

6144:hZMazM5sZChZJpq9qrK8NpFYwDu//ru1PhCqK:hS0M5u998NciunSC9

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3792	i0aOK6Fhsyv5RS7.exe
1032	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"	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_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	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe
Token: SeDebugPrivilege	1032	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 3792	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	91
PID 4860 wrote to memory of 3792	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	91
PID 4860 wrote to memory of 3792	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	91
PID 4860 wrote to memory of 1032	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	92
PID 4860 wrote to memory of 1032	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	92
PID 4860 wrote to memory of 1032	4860	2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_c20c4cb0f6ad63d8d683b50842045563_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Users\Admin\AppData\Local\Temp\i0aOK6Fhsyv5RS7.exe
  C:\Users\Admin\AppData\Local\Temp\i0aOK6Fhsyv5RS7.exe
  2⤵
  - Executes dropped EXE
  PID:3792
- 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:1032

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=764 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:2684

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
989b356ec8e6d6698d9066bd88aff11b

SHA1
5e1228038a6de9c7c2cad9c2a454867fd76ea366

SHA256
1f35679e134e1e9b62b6a1fad713453224e1022fbf8af55dacccb3e391fb12ce

SHA512
49d097060244499a904bf7cffbfe2b79b86a0735a5466f50fa9c0d570e4c33489b1d285e2ede4702d70fa54309e06424d71c62703c6f46f3b27fbc18c9e9343b

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C:\Users\Admin\AppData\Local\Temp\i0aOK6Fhsyv5RS7.exe

Filesize
191KB

MD5
94a363cd532d88ac33997c25657a19b5

SHA1
a98f1a8361d0183651c0ef457b9ac4339e429bea

SHA256
13b98844b2fa4a39a4d8ebb414fc79450d5ab4f0c8f5141ac06d40b2a0431ea4

SHA512
3b1c87a67f63e4276453ec1e322f0c13896dd0524ef35f4e4037a481ce354feaa98440f85b784c0b90a900c59ef115654f687457180ea433ea0100427f5c26f5

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

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Downloads