fded7c8bf261131e728631a4aadbdb753d297523cec1ff276e1d8ef2d985000b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 00:50

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General

Target
2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe
Size 76KB
Sample240613-a7dc7sxgnf
SHA256 fded7c8bf261131e728631a4aadbdb753d297523cec1ff276e1d8ef2d985000b
MD5 b6b4f2dce2917df92a43034efd1f8207
SHA1 32c4ea34e2fbeb353bc141316f67218b3345214f
SHA512 4e40fe2dbba258af33c55aecd7c769a4b633b2445d2858636b2934ee53365d6bd449a1efa0df6b84e4a9b0a6574d3d79e577b6c233d5cb43fd6b312f183c96e0
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTepM:ZhpAyazIlyazT3
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3060	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"	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_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	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe
Token: SeDebugPrivilege	3060	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 3060	2988	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe	82
PID 2988 wrote to memory of 3060	2988	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe	82
PID 2988 wrote to memory of 3060	2988	2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_b6b4f2dce2917df92a43034efd1f8207_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- 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:3060

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 392KB
SHA256 5026dad3eba80779e4a4873ed11f119587b465859055c74c2d7a406442d615fa
MD5 ceb099da54752fbf8c6f475aad72410b
SHA1 c0bcb2078b508016a57ac31da98fdea7dd5a22ae
SHA512 cbc58b9d1b33fa67c36850d38a447f0af9d3b0aa42f6bc957d216a152ce2a5b2c44a683c5f7b9d35aa5ba2d38d455876e4b028fee67a83f77fc99349c79d8106
SSDEEP 6144:hZMazSfH5NKe4AeaP02MnJDkN1OnZs9zl7+V8OgQkkVMNClzwMbr3JBk7YMXgnQB:hS0Sf/7qzl1696uQVKC7brjSbQnQoTU
MD5 SHA1 SHA512 SSDEEP

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od0FI8zLoKPJjee.exe

Path C:\Users\Admin\AppData\Local\Temp\od0FI8zLoKPJjee.exe
Size 76KB
SHA256 dc173280d7545a55f09b39d579977265b6ea8ea25c27d9924e7583b71c65a72e
MD5 cda60fdedbdb43adad30053fac947926
SHA1 19b99c607f66ea3a09c439d35bfba5a5dcb9e654
SHA512 0c3b4485cb77fe7edd07c66981a76ad66c172c85d030fe8a1d5c3407485414494b50f67be05e8e45bf1f37c1959ba96805cce0a9f16949b218369ed9f8b74c9d
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTa0+NPA:ZhpAyazIlyazTaBNPA
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads