b299a25e0862da92c3fec870e0923a05689421d7f76ecfb789e9d5e9558e69b3

Analysis

max time kernel
114s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
04/07/2024, 21:24

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General

Target

2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe
Size

96KB
MD5

8bcc34d51195930ecf021331c22df649
SHA1

1f39f80d8acab7dcba67230fd4cebeb5ed9e9841
SHA256

b299a25e0862da92c3fec870e0923a05689421d7f76ecfb789e9d5e9558e69b3
SHA512

e9348fb03018c886512d02ed73a1fafd610a427120fa18210231da45cb1c2615733d9052cadb87e806c55aa8d13019109720f858cfb600fd5f19c3eeb22009ae
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTUontikX33w/br8Kq2Wz:ZRpAyazIliazTbokX3SbAKxWz

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3236	IRaqoqv1C0Q7zUw.exe
2624	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"	2024-07-04_8bcc34d51195930ecf021331c22df649_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	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe
Token: SeDebugPrivilege	2624	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 3236	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe	88
PID 4384 wrote to memory of 3236	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe	88
PID 4384 wrote to memory of 2624	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe	89
PID 4384 wrote to memory of 2624	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe	89
PID 4384 wrote to memory of 2624	4384	2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-04_8bcc34d51195930ecf021331c22df649_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\IRaqoqv1C0Q7zUw.exe
  C:\Users\Admin\AppData\Local\Temp\IRaqoqv1C0Q7zUw.exe
  2⤵
  - Executes dropped EXE
  PID:3236
- 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:2624

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 --field-trial-handle=4508,i,12101950716832706950,8384629015980369538,262144 --variations-seed-version --mojo-platform-channel-handle=4488 /prefetch:8
1⤵
PID:3036

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
392KB

MD5
323d32f7ca22900ce5412212ed3a3ce1

SHA1
5241514ab49de23cde2cda7ee94e836a74b9f20a

SHA256
7b3349f5c5336e73dd34b1342fceece897aa329c554e4888d49823f553438611

SHA512
b968e71bb9cb5946af414c58542fc356de51322bf3f0adb59467a9999a0bd469de0fd70be4c0cab91c1ee7451592d15f23cec6a5b32ba8fb64e52a0d729234df

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C:\Users\Admin\AppData\Local\Temp\IRaqoqv1C0Q7zUw.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/3236-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads