a2d415c58a1881624df1e0953ef9f095682ab6300d85cb6a70d45da16f55ccff

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 22:41

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General

Target

2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe
Size

71KB
MD5

d20ab974a276e8885626a468f36e2b52
SHA1

138034a9d63319757deec380202368dc6933d9c7
SHA256

a2d415c58a1881624df1e0953ef9f095682ab6300d85cb6a70d45da16f55ccff
SHA512

80264784f5125d703db1cbcbf4f00b9155f492a0245abb38b943429a99de91e52a4a36ca7b02eaa2abbd03b84e61a96b0a6e5c2ec0e476f2c7653908cc1213d1
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTE:ZRpAyazIliazTE

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4352	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"	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3608	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe
Token: SeDebugPrivilege	4352	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 4352	3608	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe	85
PID 3608 wrote to memory of 4352	3608	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe	85
PID 3608 wrote to memory of 4352	3608	2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_d20ab974a276e8885626a468f36e2b52_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3608
- 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:4352

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
15a03f832fd5322482720051bc1131de

SHA1
9784b1a8ea577c672bb0b231489acfd6228aa5b6

SHA256
2c7d2392c83e7b351580befb65d931fe3340d4e96e1f4e31a090cee525783614

SHA512
67bd9a9273507359d62cf26b7b220275894375fd400933347e60ac640651fa0076e6deb930f2ec832499dd69527b97ee34d0e63fcfdc2a9c02d6d2a563c3cc2f

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

Filesize
71KB

MD5
27cb79b788d272813f5bf2313f980038

SHA1
9cec2f787bd63c1033969494fee871c8dea827bb

SHA256
85f01d2d598208ca905f9c0ef6b4335455903e8bc925abcb145b514ed01809ad

SHA512
aa6b0607cf39d893c78b256fbad0f6941e9c2435bf833a56320a12fca55f0454ddd84e9db525cc10c18c115808d03cc701aa128bbb46cbac5b4489085f7f688c

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads