846332f0278d229e17f6dc1daee7d46bd3107ed9a750439c17483fe6645cd9c8

Analysis

max time kernel
94s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
09/07/2024, 13:29

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General

Target

2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
Size

395KB
MD5

a71894b58d7cbcf18d9907437b2d48e5
SHA1

2c5b0ec3543ba6efe6e9db9ba5fbfc9349140a41
SHA256

846332f0278d229e17f6dc1daee7d46bd3107ed9a750439c17483fe6645cd9c8
SHA512

157fb8cde65ff9cbe08d7b54eb31d297c0cca9313af8f6040c224add0a7b6b4b8d23e9dec50159ca00212591290e5d8f1d82cabbcdf376fd7b5b652c450622d9
SSDEEP

12288:hS0Qdvsc39h7JcmO4zEdoYiaqvtKaoHl6pw:DQxsc3/JcfdoY0vgaMkw

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3644	jGzmTf3h72fm43e.exe
2124	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"	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_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	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
Token: SeDebugPrivilege	2124	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 3644	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	82
PID 4628 wrote to memory of 3644	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	82
PID 4628 wrote to memory of 3644	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	82
PID 4628 wrote to memory of 2124	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	83
PID 4628 wrote to memory of 2124	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	83
PID 4628 wrote to memory of 2124	4628	2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_a71894b58d7cbcf18d9907437b2d48e5_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Users\Admin\AppData\Local\Temp\jGzmTf3h72fm43e.exe
  C:\Users\Admin\AppData\Local\Temp\jGzmTf3h72fm43e.exe
  2⤵
  - Executes dropped EXE
  PID:3644
- 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:2124

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
ec103dc03680ea7f91940f787ca3ab6f

SHA1
0d466eafc3139ce34998c3584a0d2dc8524a8fb4

SHA256
9def4d543fa310f2de80abff823e829e1b46334fe3655997eca335bd36d61323

SHA512
bae70a77a0f46d9994875f4ecb498ea6eabf2933e044839b0280e025e35d05614ad67cbc256de551dbf41fe8698210a6427e93f9aaaac1bec4e75a74119195fc

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C:\Users\Admin\AppData\Local\Temp\jGzmTf3h72fm43e.exe

Filesize
395KB

MD5
ef1ab54190f59950cbfdc3ee23829afb

SHA1
93445f43f4f66c0961ee4521d3fa1f3d254b5a7a

SHA256
73244d0c9f50f7660d5df9cdc14b13bfa9eeda12da2ec591ae4d54bb3450e055

SHA512
959c5816527054545b310c2e7368217846d9d0a0e5029c3aa1c9238e64807de4cfe23c302b6161608de76c510daa5bcbcd02fe559513fac153fb4b3b3f3dca16

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C:\Users\Admin\AppData\Local\Temp\jGzmTf3h72fm43e.exe

Filesize
324KB

MD5
7187ae605f4dce14bb23ea2623956335

SHA1
f7c1df33b875c98f41dcde24117d89d42d25b7ce

SHA256
9e2631c19b243c28b0980607ced2540e9447b1166572483475547c1a9dd4ac0e

SHA512
f64522e2fb6bb61884fe53c34e79b355efb9ec33c02b2cd67d729af7d763e7b3873a5c7ce6ac7bb4567e6bcf8c70cadbc66f511e8bb151ab05096a832032bc8f

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