30daff20d895e395379b77e7572724915f1180b5140754ab706f262d6b8a7403

General

Target

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
Size

135KB
MD5

3d987fd031a4ac33a4bc130dd168bc4d
SHA1

8e46555e6647ed2350ceaaea94bbc3b3e40b39ff
SHA256

30daff20d895e395379b77e7572724915f1180b5140754ab706f262d6b8a7403
SHA512

01c7f419c6f57734f53d671bf1d3dec46c62f93b152b88d326abe59f599525a5b74b82b4ee3cc2192ab14ad6bdd3b26ea7d5b6c1e87fb12eaa6cdd84720253bf
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTw4Cqbz2KIKfLJgsJeRrHFQI5uVKEVW:ZRpAyazIliazTwMb6/KfacqVEV2wRHC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

6u5oJygq0pU45tY.exeCTS.exe

pid process

1948 6u5oJygq0pU45tY.exe
2932 CTS.exe
Loads dropped DLL 2 IoCs

Processes:

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe

pid process

2428 2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
2428 2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.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

pid	process
1948	6u5oJygq0pU45tY.exe
2932	CTS.exe

pid	process
2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_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

Processes:

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2428 2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
Token: SeDebugPrivilege 2932 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
Token: SeDebugPrivilege	2932	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe

description	pid	process	target process
PID 2428 wrote to memory of 1948	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	6u5oJygq0pU45tY.exe
PID 2428 wrote to memory of 1948	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	6u5oJygq0pU45tY.exe
PID 2428 wrote to memory of 1948	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	6u5oJygq0pU45tY.exe
PID 2428 wrote to memory of 1948	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	6u5oJygq0pU45tY.exe
PID 2428 wrote to memory of 2932	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	CTS.exe
PID 2428 wrote to memory of 2932	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	CTS.exe
PID 2428 wrote to memory of 2932	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	CTS.exe
PID 2428 wrote to memory of 2932	2428	2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_3d987fd031a4ac33a4bc130dd168bc4d_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428

C:\Users\Admin\AppData\Local\Temp\6u5oJygq0pU45tY.exe
C:\Users\Admin\AppData\Local\Temp\6u5oJygq0pU45tY.exe
2⤵
- Executes dropped EXE
PID:1948

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:2932

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6u5oJygq0pU45tY.exe
Filesize
135KB

MD5
8fc42976ae9be3193d838a352c33bd08

SHA1
5c9049de1b1984799f02bafe98d6c4c6142b8c8b

SHA256
c86c44b55b7831a9906630be7648508da61e8d6af452423902ea59144d930cc7

SHA512
3872f49acae91a610c085997038a68e022727d314f27c78e0b71ac3843db4c381f126754922204a81aec21e8313833d95ade84596d6b3642836e353769100d2d

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
\Users\Admin\AppData\Local\Temp\6u5oJygq0pU45tY.exe
Filesize
64KB

MD5
a32a382b8a5a906e03a83b4f3e5b7a9b

SHA1
11e2bdd0798761f93cce363329996af6c17ed796

SHA256
75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346

SHA512
ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads