bed5c3e8ec90d0065924ae43965c51a141d12327e5a17a8d4039a4130743c42e

Analysis

max time kernel
51s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 03:40

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General

Target
2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe
Size 71KB
Sample240613-d8jhdsshqb
SHA256 bed5c3e8ec90d0065924ae43965c51a141d12327e5a17a8d4039a4130743c42e
MD5 7d02819cd77d1985a23a61df42b5e4b3
SHA1 6eee099c79f1774c8e62977b7c8648c2ac6bd858
SHA512 ae2b50d18a44815cbc0bd248c0de7e9828e4bc767d2f0a53180ea1ad0144720500aae8662631708393bb9072bb1f40ae49d4b5a8c4b86490692fc428c605bc22
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTU5i:ZhpAyazIlyazTAi
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3380	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	560	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe
Token: SeDebugPrivilege	3380	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 3380	560	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe	81
PID 560 wrote to memory of 3380	560	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe	81
PID 560 wrote to memory of 3380	560	2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7d02819cd77d1985a23a61df42b5e4b3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:560
- 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:3380

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 0bdf3ed5770d63718f7ada989c1f78febd48038f33e3dbbab6440739da39f30a
MD5 73dba758c82a0702d74d271f1859e777
SHA1 556bb9d87c51b0deee92844d9acdbe6aecf3b63b
SHA512 da3b08d85c2f0f88e8de38dd471486ab87b7f085ee4ae44a220ce972bee01cb37c9d114f6e4b0796fa0dfcb6a8ed0f090f9cebd9a1ef4732f363c78b2ebd428e
SSDEEP 6144:hZMazr2uC7f9Fai/JL1ZqXjfnN1R+SuZXosYO4fO6eBV/zYVsaEUGfKYqvsUgF8i:hS0rxC7fPayhczRdpOo/7+6GfKrCw+
MD5 SHA1 SHA512 SSDEEP

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11XZaiyHNSaeXzq.exe

Path C:\Users\Admin\AppData\Local\Temp\11XZaiyHNSaeXzq.exe
Size 71KB
SHA256 08597f7b983fc5858f8f652513f47a7d1b1900a2b23e9ad3e30b397a11ed6f86
MD5 15f49ddc680fc6e568162885d762063e
SHA1 668613f3428d2b31a54703a7fc4d736c3578f893
SHA512 e3a976c61e3a494bea6a2da11dc71290f3780bdf94bbc45328be7df728cca421dedc6d7cc6d8b1eb322788c33740fca9a012b2344f21ac1abf329693e7226bcd
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTz:ZhpAyazIlyazTz
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