022b5e5d1ed1b12e97ceec990e40bd365b5ed8e279ca4f738e8c9d3409bd243a

Analysis

max time kernel
132s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
06-06-2024 20:15

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General

Target

2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe
Size

71KB
MD5

fa28ad7152748aee5ec9361f19498765
SHA1

7b4453099671c532a13b617aa56cfc8ecde4defe
SHA256

022b5e5d1ed1b12e97ceec990e40bd365b5ed8e279ca4f738e8c9d3409bd243a
SHA512

b319a2df10b59fcfca0a195cbece0e90612f5c622654d3af50187ddd3f58278689fd6648a7769e1bc7da6551750715c29fc7077f55e92e858241bf970e437d39
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTt:ZRpAyazIliazTt

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3680	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"	2024-06-06_fa28ad7152748aee5ec9361f19498765_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe
Token: SeDebugPrivilege	3680	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 3680	3408	2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe	83
PID 3408 wrote to memory of 3680	3408	2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe	83
PID 3408 wrote to memory of 3680	3408	2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_fa28ad7152748aee5ec9361f19498765_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3408
- 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:3680

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
98294755be44a1bca46328fac540f837

SHA1
fbf2ab4281c0497bd748b492784a4c8ba0d56f41

SHA256
a24b3e3662a44d201f1d0aebdc7edf35f721c4dc59ccf5bcf30e037873819c3c

SHA512
b17b312c3bad1991a35e7158cda7ce8d32e427760b955e2fd667b0a837e7fa736b22c45ddd2360f071c8bd54d1b51ccc9cc15cd26f1940e1756d2b662ccf60d0

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C:\Users\Admin\AppData\Local\Temp\iQ2nC8ustWpX5V0.exe

Filesize
71KB

MD5
89ed068714621cd9033d46bcc0acbf07

SHA1
a749d01d3e90d57b9fe5ee9244a667e30b97d64d

SHA256
85c10235cea02a1d2018b3af0a77380d3888d65e3915b5a0f73386d224b2f351

SHA512
8701e2e0c824d07db0cdf7a74ab2c4d13f8eac47b40bbd226b63cfb01dbb87cd4208c6bbbdaf3060110b1e2c7316e88174c5ed38820dab72a3e26ccd11f360b9

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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

Replay Monitor

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Downloads