be6ff88b166ad01b22f39f36a65b40314bc64c8389e01d60cb196f5618398ebb

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 03:55

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General

Target

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Size

71KB
MD5

d69d82d641b9fb248b9dd467b36810b1
SHA1

120e4fb566137de4b0354f0cef7ad100218506f2
SHA256

be6ff88b166ad01b22f39f36a65b40314bc64c8389e01d60cb196f5618398ebb
SHA512

74be47b6de5e08ebebcb58751d349e939a66424d3a9ba9057492f45a76d93a693a20953d84fee42b7949c5d61715bcc2f9674889d34d9feef789f6502251f80f
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTA:ZhpAyazIlyazTA

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

5084 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

pid	process
5084	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_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:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2388 2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Token: SeDebugPrivilege 5084 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2388	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
Token: SeDebugPrivilege	5084	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe

description	pid	process	target process
PID 2388 wrote to memory of 5084	2388	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe
PID 2388 wrote to memory of 5084	2388	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe
PID 2388 wrote to memory of 5084	2388	2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_d69d82d641b9fb248b9dd467b36810b1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2388

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:5084

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5068 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:4904

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

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
789KB

MD5
ffb0cbf2ae82a4ee053fed0adc2e0768

SHA1
55a8d6e40513e71195b231c63b260e333bc59e9f

SHA256
45a2060b0c460a2ed74dbbba2fa5ea668df30639151e1feb057c0ade8ba2fef4

SHA512
755e336a8d33ac6f25d409ed4d10d86a6f7a0b8ad16e900f647f54ec7d83c39dc1dd2af01d94b9a81eec9ea9ad507483fa2cdb0272d593c9c6d6e37805451751

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C:\Users\Admin\AppData\Local\Temp\onZfSTJ5Nyl3wa2.exe
Filesize
71KB

MD5
4b313d986752dc65a4b024939192ed85

SHA1
498039e04d47e4efeb7510ce818d946407b1d385

SHA256
51b8e0f3eecd9c02a0daecd2331aaee196c4dd088514c60c068696dfeef07f9d

SHA512
b2a09e98d2afe8c960b5a6e5f0076c93bae65388cf7ffe769d3f3eccba92ea64704c537cabbc6cb46f2a91246c121b3f2cca87fb2f46655d1af6902f71a30dfc

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit