23f02cf08163e42b3423950f8bdb979a095737c4498e664ecbdfe783e60f90a5

General

Target

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
Size

96KB
MD5

89dee1d3d8683627b69d88ca745a2257
SHA1

dbf6bc1494c3be3d492a29adb90befc0659dfe4f
SHA256

23f02cf08163e42b3423950f8bdb979a095737c4498e664ecbdfe783e60f90a5
SHA512

1c23b867e358dd274161256ac28d12118e6e8e00872c2c2ad0b8cd05d5de67bbdac55b1bf42f6f85cac14a5e1887d29d5be92ecd18b31ca5959142eb275d1e84
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTbbK/4CB67WS+0C0DHD:ZRpAyazIliazTbm/BEz+0FDHD

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

dATXCxAtWfHCfAM.exeCTS.exe

pid process

2376 dATXCxAtWfHCfAM.exe
2308 CTS.exe
Loads dropped DLL 3 IoCs

Processes:

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe

pid process

1676 2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
1676 2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
2812
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
2376	dATXCxAtWfHCfAM.exe
2308	CTS.exe

pid	process
1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
2812

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-27_89dee1d3d8683627b69d88ca745a2257_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:

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1676 2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
Token: SeDebugPrivilege 2308 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
Token: SeDebugPrivilege	2308	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe

description	pid	process	target process
PID 1676 wrote to memory of 2376	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	dATXCxAtWfHCfAM.exe
PID 1676 wrote to memory of 2376	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	dATXCxAtWfHCfAM.exe
PID 1676 wrote to memory of 2376	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	dATXCxAtWfHCfAM.exe
PID 1676 wrote to memory of 2376	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	dATXCxAtWfHCfAM.exe
PID 1676 wrote to memory of 2308	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	CTS.exe
PID 1676 wrote to memory of 2308	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	CTS.exe
PID 1676 wrote to memory of 2308	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	CTS.exe
PID 1676 wrote to memory of 2308	1676	2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-27_89dee1d3d8683627b69d88ca745a2257_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_89dee1d3d8683627b69d88ca745a2257_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:1676

C:\Users\Admin\AppData\Local\Temp\dATXCxAtWfHCfAM.exe
C:\Users\Admin\AppData\Local\Temp\dATXCxAtWfHCfAM.exe
2⤵
- Executes dropped EXE
PID:2376

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:2308

Network

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\dATXCxAtWfHCfAM.exe

Filesize
96KB

MD5
5e090a216fd0fa710bbf1d4c13f568f0

SHA1
83971d72b880eb0c487fc053f7c4f45a6cf23be9

SHA256
f2f18f71f064585e35b06bf6da437b3428d1d5ec38c09d46719d3eb9ef2e4357

SHA512
3afe28f09b6f0e8697d0c3bc9020ff8587ef4de05e75af5197a94f9ed186772ee919261ce5f98fb116bd330eb70f3c082ca4f90f3dcdac211f90a69b0d546dde

Download Submit
C:\Users\Admin\AppData\Local\Temp\dATXCxAtWfHCfAM.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/2376-14-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads